[18289] | 1 | This document details the changes between this version, bash-2.05b-release, |
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| 2 | and the previous version, bash-2.05b-beta2. |
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| 3 | |
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| 4 | 1. Changes to Bash |
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| 5 | |
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| 6 | a. Fixed an off-by-one error in the function that translates job |
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| 7 | specifications. |
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| 8 | |
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| 9 | b. Note that we're running under Emacs and disable line editing if |
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| 10 | $EMACS == `t'. |
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| 11 | |
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| 12 | ------------------------------------------------------------------------------ |
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| 13 | This document details the changes between this version, bash-2.05b-beta2, |
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| 14 | and the previous version, bash-2.05b-beta1. |
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| 15 | |
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| 16 | 1. Changes to Bash |
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| 17 | |
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| 18 | a. Fixed the /= and %= arithmetic operators to catch division by zero. |
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| 19 | |
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| 20 | b. Added putenv, setenv, unsetenv to getenv replacement for completeness. |
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| 21 | |
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| 22 | c. Fixed a bug that could cause the -O expand_aliases invocation option |
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| 23 | to not take effect. |
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| 24 | |
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| 25 | d. Fixed a problem with process substitution that resulted in incorrect |
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| 26 | behavior when the number of process substitutions in an individual |
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| 27 | command approached 64. |
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| 28 | |
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| 29 | 2. Changes to Readline |
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| 30 | |
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| 31 | a. Fixed a problem with backward-char-search when on a system with support |
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| 32 | for multibyte characters when running in a locale without any multibyte |
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| 33 | characters. |
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| 34 | |
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| 35 | ------------------------------------------------------------------------------ |
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| 36 | This document details the changes between this version, bash-2.05b-beta1, |
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| 37 | and the previous version, bash-2.05b-alpha1. |
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| 38 | |
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| 39 | 1. Changes to Bash |
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| 40 | |
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| 41 | a. Fixed a problem when parsing a POSIX.2 character class name while |
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| 42 | evaluating a bracket expression containing multibyte characters. |
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| 43 | |
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| 44 | b. Changed the help text for `bind' to make it clear that any command |
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| 45 | that may be placed in ~/.inputrc is a valid argument to `bind'. |
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| 46 | |
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| 47 | c. Added `help' builtin entries for `((', `[[', and arithmetic for. |
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| 48 | |
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| 49 | d. malloc updated again: |
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| 50 | o slightly better overflow and underflow detection by putting the |
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| 51 | chunk size at the beginning and end of the chunk and making |
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| 52 | sure they match in free/realloc |
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| 53 | o partial page allocated to make things page-aligned no longer |
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| 54 | completely wasted |
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| 55 | o block coalescing now enabled by default |
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| 56 | o splitting and coalescing enabled for 32-byte chunks, the most |
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| 57 | common size requested |
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| 58 | o fixed a problem that resulted in spurious underflow messages and |
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| 59 | aborts |
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| 60 | o bin sizes are precomputed and stored in an array rather than |
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| 61 | being computed at run time |
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| 62 | o malloc will return memory blocks back to the system if the block |
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| 63 | being freed is at the top of the heap and of sufficient size to |
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| 64 | make it worthwhile |
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| 65 | o malloc/free/realloc now inline memset instead of calling the |
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| 66 | libc function; uses Duff's device for good performance |
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| 67 | |
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| 68 | e. Check for getservent(); make the service name completion code dependent |
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| 69 | on its presence. |
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| 70 | |
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| 71 | f. Changed the readline callback that executes a command bound to a key |
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| 72 | sequence to not save the executed command on the history list and to |
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| 73 | save and restore the parsing state. |
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| 74 | |
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| 75 | g. Changes to lib/sh/snprintf.c: fixed some bugs in the `g' and `G' |
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| 76 | floating point format display; implemented the "'" flag character |
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| 77 | that turns on thousands' grouping; fixed behavior on systems where |
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| 78 | MB_CUR_MAX does not evaluate to a constant. |
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| 79 | |
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| 80 | h. The `unset' builtin no longer returns a failure status when asked to |
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| 81 | unset a previously-unset variable or function. |
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| 82 | |
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| 83 | i. Changes to the build system to make it easier to cross-compile bash |
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| 84 | for different systems. |
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| 85 | |
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| 86 | j. Added `,' to the characters that are backslash-escaped during filename |
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| 87 | completion, to avoid problems with complete-into-braces and RCS filenames |
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| 88 | containing commas. |
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| 89 | |
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| 90 | k. Some changes to the multibyte character support code to avoid many calls |
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| 91 | to strlen(). |
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| 92 | |
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| 93 | l. Bash now correctly honors setting LANG to some value when LC_ALL does not |
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| 94 | already have a value. |
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| 95 | |
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| 96 | m. Fixed a bug that could cause SIGSEGV when processing nested traps with |
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| 97 | trap handlers. |
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| 98 | |
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| 99 | n. The `source/.' builtin now restores the positional parameters when it |
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| 100 | returns unless they were changed using the `set' builtin during the file's |
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| 101 | execution. |
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| 102 | |
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| 103 | o. Fixed a bug that caused a syntax error when a command was terminated by |
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| 104 | EOF. |
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| 105 | |
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| 106 | 2. New Features in Bash |
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| 107 | |
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| 108 | a. There is now support for placing the long help text into separate files |
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| 109 | installed into ${datadir}/bash. Not enabled by default; can be turned |
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| 110 | on with `--enable-separate-helpfiles' option to configure. |
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| 111 | |
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| 112 | b. All builtins that take operands accept a `--' pseudo-option, except |
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| 113 | `echo'. |
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| 114 | |
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| 115 | c. The `echo' builtin now accepts \0xxx (zero to three octal digits following |
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| 116 | the `0') in addition to \xxx (one to three octal digits) for SUSv3/XPG6/ |
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| 117 | POSIX.1-2001 compliance. |
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| 118 | |
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| 119 | 3. Changes to Readline |
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| 120 | |
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| 121 | a. Fixed a small problem in _rl_insert_char with multibyte characters. |
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| 122 | |
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| 123 | b. Fixes from IBM for line wrapping problems when using multibyte characters. |
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| 124 | |
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| 125 | c. Fixed a problem which caused the display to be messed up when the last |
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| 126 | line of a multi-line prompt (possibly containing invisible characters) |
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| 127 | was longer than the screen width. |
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| 128 | |
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| 129 | d. Fixed a problem with the vi-mode `r' command that ocurred on systems with |
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| 130 | support for multibyte characters when running in a locale without any |
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| 131 | multibyte characters. |
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| 132 | |
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| 133 | ------------------------------------------------------------------------------ |
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| 134 | This document details the changes between this version, bash-2.05b-alpha1, |
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| 135 | and the previous version, bash-2.05a-release. |
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| 136 | |
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| 137 | 1. Changes to Bash |
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| 138 | |
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| 139 | a. Some changes to work around inlining differences between compilers. |
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| 140 | |
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| 141 | b. Added more prototypes for internal shell typedefs, to catch argument |
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| 142 | passing errors when using pointers to functions. |
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| 143 | |
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| 144 | c. The `cd' builtin now fails in posix mode when a valid directory cannot be |
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| 145 | constructed from a relative pathname argument and the $PWD using pathname |
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| 146 | canonicalization, and the -P option has not been supplied. Previously, |
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| 147 | the shell would attempt to use what the user typed, leading to weird |
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| 148 | values for $PWD and discrepancies between the value of $PWD and the |
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| 149 | actual working directory. |
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| 150 | |
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| 151 | d. The `cd' builtin now resets $PWD when canonicalization fails but a chdir |
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| 152 | to the pathname passed as an argument succeeds (when not in posix mode). |
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| 153 | |
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| 154 | e. The `fc' builtin has been fixed, as POSIX requires, to use the closest |
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| 155 | history position in range when given an out-of-range argument. |
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| 156 | |
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| 157 | f. The history file loading code was changed to allow lines to be saved in |
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| 158 | the history list from the shell startup files. |
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| 159 | |
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| 160 | g. `history -s args' now works bettern in compound commands. |
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| 161 | |
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| 162 | h. The tilde expansion code was fixed to better recognize when it's being |
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| 163 | invoked in an assignment context, which enables expansion after `=' |
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| 164 | and `:'. |
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| 165 | |
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| 166 | i. Fixed the command name completion code so a slash is no longer appended |
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| 167 | to a single match if there happens to be a directory with that name in |
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| 168 | $PWD. |
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| 169 | |
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| 170 | j. Fixed compound array assignment to no longer perform alias expansion, to |
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| 171 | allow reserved words as array members, and to not produce extra output |
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| 172 | when the `-v' option had been enabled. |
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| 173 | |
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| 174 | k. Fixed the programmable completion code to better handle newlines in lists |
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| 175 | of possible completions (e.g., `complete -W'). |
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| 176 | |
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| 177 | l. Removed the reserved words from the `bash-builtins' manual page. |
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| 178 | |
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| 179 | m. Parser error reporting now attempts to do a better job of identifying the |
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| 180 | token in error rather than doing straight textual analysis. |
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| 181 | |
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| 182 | n. Fixes for Inf/NaN, locales, wide/multibyte characters and zero-length |
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| 183 | arguments in the library snprintf(3) replacement. |
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| 184 | |
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| 185 | o. `read -e' no longer does command name completion on the first word on |
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| 186 | the line being read. |
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| 187 | |
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| 188 | p. `select' now returns failure if the read of the user's selection fails. |
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| 189 | |
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| 190 | q. Fixed a bug that could cause a core dump when setting $PIPESTATUS. |
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| 191 | |
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| 192 | r. Fixes to not allocate so many job slots when the shell is running a loop |
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| 193 | with job control enabled in a subshell of an interactive shell. |
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| 194 | |
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| 195 | s. Fixed a bug in the trap code that caused traps to be inherited by |
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| 196 | command substitutions in some cases. |
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| 197 | |
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| 198 | t. Fixed a bug that could cause alias expansion to inappropriately expand |
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| 199 | the word following the alias. |
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| 200 | |
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| 201 | u. Fixed a bug in the `kill' builtin that mishandled negative pid arguments. |
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| 202 | |
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| 203 | v. The parser is less lenient when parsing assignment statements where the |
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| 204 | characters before the `=' don't comprise a valid identifier. |
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| 205 | |
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| 206 | w. The arithmetic expression evaluation code now honors the setting of the |
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| 207 | `-u' option when expanding variable names. |
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| 208 | |
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| 209 | x. Fixed the arithmetic evaluation code to allow array subscripts to be |
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| 210 | assigned (`let b[7]=42') and auto-incremented and auto-decremented |
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| 211 | (e.g., b[7]++). |
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| 212 | |
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| 213 | y. Reimplemented the existing prompt string date and time expansions using |
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| 214 | strftime(3), which changed the output of \@ in some locales. |
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| 215 | |
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| 216 | z. Fixed a bug that could cause a core dump when a special shell variable |
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| 217 | (like RANDOM) was converted to an array with a variable assignment. |
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| 218 | |
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| 219 | aa. Fixed a bug that would reset the handler for a signal the user had |
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| 220 | trapped to a function that would exit the shell when setting the exit |
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| 221 | trap in a non-interactive shell. |
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| 222 | |
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| 223 | bb. Changed the execve(2) wrapper code to check whether or not a failing |
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| 224 | command is a directory before looking at whether a `#!' interpreter |
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| 225 | failed for some reason. |
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| 226 | |
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| 227 | cc. Fixed a bug in the command printing code so it no longer inserts a `;' |
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| 228 | after a newline, which produces a syntax error when reused as input. |
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| 229 | |
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| 230 | dd. The code that expands $PS4 no longer inherits the `-x' flag. |
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| 231 | |
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| 232 | ee. The bash-specific completion functions may now take advantage of the |
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| 233 | double-TAB and M-? features of the standard readline completion |
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| 234 | functions. |
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| 235 | |
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| 236 | ff. The mail checking code no longer prints a message if the checked file's |
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| 237 | size has not increased, even if the access time is less than the modification time. |
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| 238 | |
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| 239 | gg. Rewrote the variable symbol table code: there is now a stack of |
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| 240 | contexts, each possibly including a separate symbol table; there can |
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| 241 | be more than one temporary environment supplied to nested invocations |
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| 242 | of `./source'; the temporary environments no longer require so much |
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| 243 | special-case code; shell functions now handle the temporary environment |
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| 244 | and local variables more consistently; function scope exit is faster now |
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| 245 | that the entire symbol table does not have to be traversed to dispose of |
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| 246 | local variables; it is now easier to push vars from the temporary |
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| 247 | environment to the shell's variable table in posix mode; some duplicated |
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| 248 | code has been removed. |
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| 249 | |
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| 250 | hh. Regularized the error message printing code; builtin_error is now called |
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| 251 | more consistently, and common error message strings are handled by small |
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| 252 | functions. This should make eventual message translation easier. |
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| 253 | |
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| 254 | ii. Error messages now include the line number in a script when the shell |
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| 255 | is not interactive. |
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| 256 | |
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| 257 | jj. Array subscript expansion now takes place even when the array variable is |
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| 258 | unset, so side effects will take place. |
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| 259 | |
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| 260 | kk. Fixed a bug in the SICGHLD child-reaping code so that it won't find |
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| 261 | jobs already marked as terminated if the OS reuses pids quickly enough. |
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| 262 | |
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| 263 | ll. Fixed a bug that could cause a signal to not interrupt the `wait' |
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| 264 | builtin while it was waiting for a background process to terminate. |
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| 265 | |
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| 266 | mm. A couple of changes to make it easier for multiple shells to share history |
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| 267 | files using `history -n', `history -r', and `history -w'. |
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| 268 | |
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| 269 | nn. The `getopts' builtin always increments OPTIND to point to the next |
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| 270 | option to be handled when an option is returned, whether it's valid |
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| 271 | or not, as POSIX 1003.x-2001 requires. |
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| 272 | |
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| 273 | oo. Changed some parts of the expansion code to avoid allocating and |
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| 274 | immediately freeing memory without using the results for anything. |
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| 275 | |
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| 276 | pp. The shell now keeps track of $IFS internally, updating its internal map |
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| 277 | each time the variable is assigned a new value (or at local scope exit). |
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| 278 | This saves thousands of hash lookups for IFS, which, while individually |
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| 279 | cheap, add up. |
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| 280 | |
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| 281 | qq. Rewrote the hash table code: searching and insertion are much faster now, |
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| 282 | and it uses a better string hashing function; augmented the function |
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| 283 | interface to simplify other parts of the code and remove duplicated code |
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| 284 | |
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| 285 | rr. The shell now uses a simple, generic `object cache' for allocating and |
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| 286 | caching words and word lists, which were the major users of |
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| 287 | malloc/free. |
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| 288 | |
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| 289 | ss. Fixed the assignment statement parsing code to allow whitespace and |
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| 290 | newlines in subscripts when performing array element assignment. |
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| 291 | |
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| 292 | tt. The shell now issues many fewer calls to sigprocmask and other signal |
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| 293 | masking system calls. |
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| 294 | |
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| 295 | uu. Fixed the `test' and conditional command file comparison operators to |
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| 296 | work right when one file has a non-positive timestamp and the other |
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| 297 | does not exist. |
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| 298 | |
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| 299 | vv. Fixed some cases where the special characters '\001' and '\177' in the |
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| 300 | values of variables or positional parameters caused incorrect expansion |
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| 301 | results. |
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| 302 | |
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| 303 | 2. Changes to Readline |
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| 304 | |
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| 305 | a. Fixed output of comment-begin character when listing variable values. |
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| 306 | |
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| 307 | b. Added some default key bindings for common escape sequences produced by |
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| 308 | HOME and END keys. |
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| 309 | |
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| 310 | c. Fixed the mark handling code to be more emacs-compatible. |
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| 311 | |
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| 312 | d. A bug was fixed in the code that prints possible completions to keep it |
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| 313 | from printing empty strings in certain circumstances. |
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| 314 | |
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| 315 | e. Change the key sequence printing code to print ESC as M\- if ESC is a |
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| 316 | meta-prefix character -- it's easier for users to understand than \e. |
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| 317 | |
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| 318 | f. Fixed unstifle_history() to return values that match the documentation. |
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| 319 | |
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| 320 | g. Fixed the event loop (rl_event_hook) to handle the case where the input |
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| 321 | file descriptor is invalidated. |
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| 322 | |
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| 323 | h. Fixed the prompt display code to work better when the application has a |
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| 324 | custom redisplay function. |
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| 325 | |
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| 326 | i. Changes to make reading and writing the history file a little faster, and |
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| 327 | to cope with huge history files without calling abort(3) from xmalloc. |
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| 328 | |
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| 329 | j. The vi-mode `S' and `s' commands are now undone correctly. |
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| 330 | |
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| 331 | 3. New Features in Bash |
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| 332 | |
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| 333 | a. If set, TMOUT is the default timeout for the `read' builtin. |
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| 334 | |
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| 335 | b. `type' has two new options: `-f' suppresses shell function lookup, and |
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| 336 | `-P' forces a $PATH search. |
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| 337 | |
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| 338 | c. New code to handle multibyte characters. |
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| 339 | |
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| 340 | d. `select' was changed to be more ksh-compatible, in that the menu is |
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| 341 | reprinted each time through the loop only if REPLY is set to NULL. |
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| 342 | The previous behavior is available as a compile-time option. |
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| 343 | |
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| 344 | e. `complete -d' and `complete -o dirnames' now force a slash to be |
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| 345 | appended to names which are symlinks to directories. |
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| 346 | |
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| 347 | f. There is now a bindable edit-and-execute-command readline command, |
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| 348 | like the vi-mode `v' command, bound to C-xC-e in emacs mode. |
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| 349 | |
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| 350 | g. Added support for ksh93-like [:word:] character class in pattern matching. |
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| 351 | |
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| 352 | h. The $'...' quoting construct now expands \cX to Control-X. |
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| 353 | |
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| 354 | i. A new \D{...} prompt expansion; passes the `...' to strftime and inserts |
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| 355 | the result into the expanded prompt. |
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| 356 | |
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| 357 | j. The shell now performs arithmetic in the largest integer size the |
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| 358 | machine supports (intmax_t), instead of long. |
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| 359 | |
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| 360 | k. If a numeric argument is supplied to one of the bash globbing completion |
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| 361 | functions, a `*' is appended to the word before expansion is attempted. |
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| 362 | |
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| 363 | l. The bash globbing completion functions now allow completions to be listed |
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| 364 | with double tabs or if `show-all-if-ambiguous' is set. |
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| 365 | |
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| 366 | m. New `-o nospace' option for `complete' and `compgen' builtins; suppresses |
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| 367 | readline's appending a space to the completed word. |
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| 368 | |
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| 369 | n. New `here-string' redirection operator: <<< word. |
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| 370 | |
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| 371 | o. When displaying variables, function attributes and definitions are shown |
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| 372 | separately, allowing them to be re-used as input (attempting to re-use |
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| 373 | the old output would result in syntax errors). |
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| 374 | |
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| 375 | p. There is a new configuration option `--enable-mem-scramble', controls |
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| 376 | bash malloc behavior of writing garbage characters into memory at |
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| 377 | allocation and free time. |
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| 378 | |
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| 379 | q. The `complete' and `compgen' builtins now have a new `-s/-A service' |
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| 380 | option to complete on names from /etc/services. |
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| 381 | |
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| 382 | r. `read' has a new `-u fd' option to read from a specified file descriptor. |
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| 383 | |
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| 384 | s. Fix the completion code so that expansion errors in a directory name |
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| 385 | don't cause a longjmp back to the command loop. |
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| 386 | |
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| 387 | t. Fixed word completion inside command substitution to work a little more |
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| 388 | intuitively. |
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| 389 | |
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| 390 | u. The `printf' %q format specifier now uses $'...' quoting to print the |
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| 391 | argument if it contains non-printing characters. |
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| 392 | |
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| 393 | v. The `declare' and `typeset' builtins have a new `-t' option. When applied |
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| 394 | to functions, it causes the DEBUG trap to be inherited by the named |
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| 395 | function. Currently has no effect on variables. |
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| 396 | |
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| 397 | w. The DEBUG trap is now run *before* simple commands, ((...)) commands, |
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| 398 | [[...]] conditional commands, and for ((...)) loops. |
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| 399 | |
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| 400 | x. The expansion of $LINENO inside a shell function is only relative to the |
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| 401 | function start if the shell is interactive -- if the shell is running a |
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| 402 | script, $LINENO expands to the line number in the script. This is as |
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| 403 | POSIX-2001 requires. |
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| 404 | |
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| 405 | y. The bash debugger in examples/bashdb has been modified to work with the |
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| 406 | new DEBUG trap semantics, the command set has been made more gdb-like, |
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| 407 | and the changes to $LINENO make debugging functions work better. Code |
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| 408 | from Gary Vaughan. |
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| 409 | |
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| 410 | z. New [n]<&word- and [n]>&word- redirections from ksh93 -- move fds (dup |
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| 411 | and close). |
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| 412 | |
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| 413 | aa. There is a new `-l' invocation option, equivalent to `--login'. |
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| 414 | |
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| 415 | bb. The `hash' builtin has a new `-l' option to list contents in a reusable |
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| 416 | format, and a `-d' option to remove a name from the hash table. |
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| 417 | |
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| 418 | 4. New Features in Readline |
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| 419 | |
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| 420 | a. Support for key `subsequences': allows, e.g., ESC and ESC-a to both |
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| 421 | be bound to readline functions. Now the arrow keys may be used in vi |
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| 422 | insert mode. |
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| 423 | |
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| 424 | b. When listing completions, and the number of lines displayed is more than |
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| 425 | the screen length, readline uses an internal pager to display the results. |
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| 426 | This is controlled by the `page-completions' variable (default on). |
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| 427 | |
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| 428 | c. New code to handle editing and displaying multibyte characters. |
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| 429 | |
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| 430 | d. The behavior introduced in bash-2.05a of deciding whether or not to |
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| 431 | append a slash to a completed name that is a symlink to a directory has |
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| 432 | been made optional, controlled by the `mark-symlinked-directories' |
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| 433 | variable (default is the 2.05a behavior). |
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| 434 | |
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| 435 | e. The `insert-comment' command now acts as a toggle if given a numeric |
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| 436 | argument: if the first characters on the line don't specify a |
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| 437 | comment, insert one; if they do, delete the comment text |
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| 438 | |
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| 439 | f. New application-settable completion variable: |
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| 440 | rl_completion_mark_symlink_dirs, allows an application's completion |
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| 441 | function to temporarily override the user's preference for appending |
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| 442 | slashes to names which are symlinks to directories. |
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| 443 | |
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| 444 | g. New function available to application completion functions: |
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| 445 | rl_completion_mode, to tell how the completion function was invoked |
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| 446 | and decide which argument to supply to rl_complete_internal (to list |
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| 447 | completions, etc.). |
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| 448 | |
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| 449 | h. Readline now has an overwrite mode, toggled by the `overwrite-mode' |
---|
| 450 | bindable command, which could be bound to `Insert'. |
---|
| 451 | |
---|
| 452 | i. New application-settable completion variable: |
---|
| 453 | rl_completion_suppress_append, inhibits appending of |
---|
| 454 | rl_completion_append_character to completed words. |
---|
| 455 | |
---|
| 456 | j. New key bindings when reading an incremental search string: ^W yanks |
---|
| 457 | the currently-matched word out of the current line into the search |
---|
| 458 | string; ^Y yanks the rest of the current line into the search string, |
---|
| 459 | DEL or ^H deletes characters from the search string. |
---|
| 460 | |
---|
| 461 | ------------------------------------------------------------------------------ |
---|
| 462 | This document details the changes between this version, bash-2.05a-release, |
---|
| 463 | and the previous version, bash-2.05a-rc1. |
---|
| 464 | |
---|
| 465 | 1. Changes to Bash |
---|
| 466 | |
---|
| 467 | a. Fixed the `printf' builtin so that the variable name supplied as an |
---|
| 468 | argument to a %n conversion must be a valid shell identifier. |
---|
| 469 | |
---|
| 470 | b. Improved the random number generator slightly. |
---|
| 471 | |
---|
| 472 | c. Changes to configuration to not put -I/usr/include into $CFLAGS, since |
---|
| 473 | it messes up some includes. |
---|
| 474 | |
---|
| 475 | d. Corrected description of POSIXLY_CORRECT in man page and info manual. |
---|
| 476 | |
---|
| 477 | e. Fixed a couple of cases of incorrect function prototypes that sneaked |
---|
| 478 | through and caused compilation problems. |
---|
| 479 | |
---|
| 480 | f. A few changes to avoid potential core dumps in the programmable completion |
---|
| 481 | code. |
---|
| 482 | |
---|
| 483 | g. Fixed a configure problem that could cause a non-existent file to show |
---|
| 484 | up in LIBOBJS. |
---|
| 485 | |
---|
| 486 | h. Fixed a configure problem that could cause siglist.o to not be built when |
---|
| 487 | required. |
---|
| 488 | |
---|
| 489 | i. Changes to the strtoimax and strtoumax replacement functions to work |
---|
| 490 | around buggy compilers. |
---|
| 491 | |
---|
| 492 | j. Fixed a problem with the snprintf replacement function that could |
---|
| 493 | potentially cause a core dump. |
---|
| 494 | |
---|
| 495 | 2. Changes to Readline |
---|
| 496 | |
---|
| 497 | a. Fixed a locale-specific problem in the vi-mode `goto mark' command. |
---|
| 498 | |
---|
| 499 | b. Fixed Makefile to not put -I/usr/include into CFLAGS, since it can cause |
---|
| 500 | include file problems. |
---|
| 501 | |
---|
| 502 | ------------------------------------------------------------------------------ |
---|
| 503 | This document details the changes between this version, bash-2.05a-rc1, |
---|
| 504 | and the previous version, bash-2.05a-beta1. |
---|
| 505 | |
---|
| 506 | 1. Changes to Bash |
---|
| 507 | |
---|
| 508 | a. Fixed the snprintf replacement to correctly implement the `alternate form' |
---|
| 509 | of the %g and %G conversions. |
---|
| 510 | |
---|
| 511 | b. Fixed snprintf to correctly handle the optional precision with the %g and |
---|
| 512 | %G conversions. |
---|
| 513 | |
---|
| 514 | c. Fixed the arithmetic evaluation code to correct the values of `@' and `_' |
---|
| 515 | when translating base-64 constants (they were backwards). |
---|
| 516 | |
---|
| 517 | d. New library functions for formatting long and long long ints. |
---|
| 518 | |
---|
| 519 | e. Fixed a few places where negative array subscripts could have occurred, |
---|
| 520 | mostly as the result of systems using signed characters. |
---|
| 521 | |
---|
| 522 | f. Fixed a few places that assumed a pid_t was no wider than an int. |
---|
| 523 | |
---|
| 524 | g. Fixed the `maildir' mail checking code to work on systems where a |
---|
| 525 | `struct stat' doesn't include an `st_blocks' member. |
---|
| 526 | |
---|
| 527 | h. Fixed snprintf to make `unsigned long long' conversion formats (%llu) |
---|
| 528 | work better. |
---|
| 529 | |
---|
| 530 | i. Fixed snprintf to not print a sign when asked to do an unsigned conversion. |
---|
| 531 | |
---|
| 532 | j. Made configure changes to avoid compiling empty source files in lib/sh. |
---|
| 533 | |
---|
| 534 | k. New replacement functions (if necessary) for strtoull, strtoll, strtoimax, |
---|
| 535 | strtoumax. |
---|
| 536 | |
---|
| 537 | l. The `printf' builtin now handles the `ll' and `j' length modifiers |
---|
| 538 | directly, since they can affect the type and width of the argument |
---|
| 539 | passed to printf(3). |
---|
| 540 | |
---|
| 541 | m. Renamed a number of the bash-specific autoconf macros in aclocal.m4 to |
---|
| 542 | have more sytematic naming, with accompanying changes to configure.in. |
---|
| 543 | |
---|
| 544 | n. Fixed snprintf to handle long doubles and the %a/%A conversions by |
---|
| 545 | falling back to sprintf, as long as sprintf supports them. |
---|
| 546 | |
---|
| 547 | o. Fixed return value from vsnprintf/snprintf to be the number of characters |
---|
| 548 | that would have been printed, even if that number exceeds the buffer |
---|
| 549 | size passed as an argument. |
---|
| 550 | |
---|
| 551 | p. Bash no longer attempts to define its own versions of some ctype macros |
---|
| 552 | if they are implemented as functions in libc but not as macros in |
---|
| 553 | <ctype.h>. |
---|
| 554 | |
---|
| 555 | q. Changed the variable printing code (used by `set', `export', etc.) to |
---|
| 556 | not use the $'...' syntax when in posix mode, since that caused |
---|
| 557 | interoperability problems with other shells (most notably with autoconf). |
---|
| 558 | When not in posix mode, it uses $'...' if the string to be printed |
---|
| 559 | contains non-printing characters and regular single quotes otherwise. |
---|
| 560 | |
---|
| 561 | r. snprintf now recognizes the %F conversion. |
---|
| 562 | |
---|
| 563 | s. Fixed a bug that could cause the wrong status to be returned by a shell |
---|
| 564 | function when the shell is compiled without job control and a null |
---|
| 565 | command containing a command substutition was executed in the function. |
---|
| 566 | |
---|
| 567 | t. When in posix mode, the default value for MAILCHECK is 600. |
---|
| 568 | |
---|
| 569 | u. Bash only initializes FUNCNAME, GROUPS, and DIRSTACK as special variables |
---|
| 570 | if they're not in the initial environment. |
---|
| 571 | |
---|
| 572 | v. If SECONDS appears in the initial environment with a valid integer value, |
---|
| 573 | bash uses that as the starting value, as if an assignment had been |
---|
| 574 | performed. |
---|
| 575 | |
---|
| 576 | w. Bash no longer auto-exports HOME, PATH, SHELL, or TERM, even though it |
---|
| 577 | gives them default values if they don't appear in the initial environment. |
---|
| 578 | |
---|
| 579 | x. Bash no longer auto-exports HOSTNAME, HOSTTYPE, MACHTYPE, or OSTYPE, |
---|
| 580 | even if it assigns them default values. |
---|
| 581 | |
---|
| 582 | y. Bash no longer removes the export attribute from SSH_CLIENT or SSH2_CLIENT |
---|
| 583 | if they appear in the initial environment. |
---|
| 584 | |
---|
| 585 | z. Bash no longer attempts to discover if it's being run by sshd in order to |
---|
| 586 | run the startup files. If the SSH_SOURCE_BASHRC is uncommented in |
---|
| 587 | config-top.h it will attempt to do so as previously, but that's commented |
---|
| 588 | out in the distributed version. |
---|
| 589 | |
---|
| 590 | aa. Fixed a typo in the code that tests for LC_NUMERIC. |
---|
| 591 | |
---|
| 592 | bb. The POSIXLY_CORRECT shell variable and its effects are now documented. |
---|
| 593 | |
---|
| 594 | cc. Some changes to several of the support shell scripts included in the |
---|
| 595 | definitions to try to avoid race conditions and attacks. |
---|
| 596 | |
---|
| 597 | dd. Several changes to avoid warnings from `gcc -Wall'. |
---|
| 598 | |
---|
| 599 | ee. Fixed a problem with the `unset' builtin that could cause incorrect |
---|
| 600 | results if asked to unset a variable and an array subscript in the |
---|
| 601 | same command. |
---|
| 602 | |
---|
| 603 | ff. A few changes to the shell's temporary file creation code to avoid |
---|
| 604 | potential file descriptor leaks and to prefer the system's idea of |
---|
| 605 | the temporary directory to use. |
---|
| 606 | |
---|
| 607 | gg. Fixes to build with the C alloca in lib/malloc/alloca.c if the system |
---|
| 608 | requires it but the shell has been configured --without-bash-malloc. |
---|
| 609 | |
---|
| 610 | hh. Updated the documentation to note that only interactive shells resend |
---|
| 611 | SIGHUP to all jobs before exiting. |
---|
| 612 | |
---|
| 613 | ii. Fixes to only pass unquoted tilde words to tilde_expand, rather than |
---|
| 614 | rely on tilde_expand or getpwnam(3) to handle the quotes (MacOS 10.x |
---|
| 615 | will remove backslashes in any login name passed to getpwnam(3)). |
---|
| 616 | |
---|
| 617 | jj. Small change from Paul Eggert to make LINENO right in commands run with |
---|
| 618 | `bash -c'. |
---|
| 619 | |
---|
| 620 | 2. New Features in Bash |
---|
| 621 | |
---|
| 622 | a. The `printf' builtin now handles the %a and %A conversions if they're |
---|
| 623 | implemented by printf(3). |
---|
| 624 | |
---|
| 625 | b. The `printf' builtin now handles the %F conversion (just about like %f). |
---|
| 626 | |
---|
| 627 | c. The `printf' builtin now handles the %n conversion like printf(3). The |
---|
| 628 | corresponding argument is the name of a shell variable to which the |
---|
| 629 | value is assigned. |
---|
| 630 | |
---|
| 631 | 3. Changes to Readline |
---|
| 632 | |
---|
| 633 | a. Fixed a few places where negative array subscripts could have occurred. |
---|
| 634 | |
---|
| 635 | b. Fixed the vi-mode code to use a better method to determine the bounds of |
---|
| 636 | the array used to hold the marks. |
---|
| 637 | |
---|
| 638 | c. Fixed the defines in chardefs.h to work better when chars are signed. |
---|
| 639 | |
---|
| 640 | d. Fixed configure.in to use the new names for bash autoconf macros. |
---|
| 641 | |
---|
| 642 | e. Readline no longer attempts to define its own versions of some ctype |
---|
| 643 | macros if they are implemented as functions in libc but not as macros in |
---|
| 644 | <ctype.h>. |
---|
| 645 | |
---|
| 646 | f. Fixed a problem where rl_backward could possibly set point to before |
---|
| 647 | the beginning of the line. |
---|
| 648 | |
---|
| 649 | ------------------------------------------------------------------------------ |
---|
| 650 | This document details the changes between this version, bash-2.05a-beta1, |
---|
| 651 | and the previous version, bash-2.05a-alpha1. |
---|
| 652 | |
---|
| 653 | 1. Changes to Bash |
---|
| 654 | |
---|
| 655 | a. Fixed a bug in the evalution of arithmetic `for' statements when the |
---|
| 656 | expanded expression is NULL. |
---|
| 657 | |
---|
| 658 | b. Fixed an unassigned variable problem in the redirection printing code. |
---|
| 659 | |
---|
| 660 | c. Added more prototypes to extern function declarations in the header |
---|
| 661 | files and to static function declarations in C source files. |
---|
| 662 | |
---|
| 663 | d. Make sure called functions have a prototype in scope, to get the arguments |
---|
| 664 | and return values right instead of casting. Removed extern function |
---|
| 665 | declarations from C source files that were already included in header |
---|
| 666 | files. |
---|
| 667 | |
---|
| 668 | e. Changed some function arguments to use function typedefs in general.h so |
---|
| 669 | the prototypes can be checked. The only use of Function and VFunction |
---|
| 670 | now is for unwind-protects. |
---|
| 671 | |
---|
| 672 | f. More const changes to function arguments and appropriate variables. |
---|
| 673 | |
---|
| 674 | g. Changed the mail checking support to handle `maildir'-style mail |
---|
| 675 | directories. |
---|
| 676 | |
---|
| 677 | h. Augmented the bash malloc to pass in the file and line number information |
---|
| 678 | for each malloc, realloc, and free. This should result in better error |
---|
| 679 | messages. |
---|
| 680 | |
---|
| 681 | i. The `old' gnu malloc is no longer a configuration option. |
---|
| 682 | |
---|
| 683 | j. Augmented the bash malloc with optional tracing and registering allocated |
---|
| 684 | and freed memory. |
---|
| 685 | |
---|
| 686 | k. Prompt string decoding now saves and restores the value of $? when it |
---|
| 687 | expands the prompt string, so command substitutions don't change $?. |
---|
| 688 | |
---|
| 689 | i. Array indices are now `long', since shell arithmetic is performed as long, |
---|
| 690 | and the internal arrayind_t type is used consistently. |
---|
| 691 | |
---|
| 692 | j. Some more `unsigned char *' fixes from Paul Eggert. |
---|
| 693 | |
---|
| 694 | k. Fixed a bad call to builtin_error that could cause core dumps when making |
---|
| 695 | local variables. |
---|
| 696 | |
---|
| 697 | l. `return' may no longer be used to terminate a `select' command, for |
---|
| 698 | compatibility with ksh. |
---|
| 699 | |
---|
| 700 | m. Changed code that reads octal numbers to do a better job of detecting |
---|
| 701 | overflows. |
---|
| 702 | |
---|
| 703 | n. The time formatting code no longer uses absolute indices into a buffer, |
---|
| 704 | because the buffer size changes depending on the size of a `time_t'. |
---|
| 705 | |
---|
| 706 | o. `umask' now prints four digits when printing in octal mode, for |
---|
| 707 | compatibility with other shells. |
---|
| 708 | |
---|
| 709 | p. Lots of changes to the `printf' builtin from Paul Eggert: it handles `L' |
---|
| 710 | formats and long doubles better, and internal functions have been |
---|
| 711 | simpified where appropriate. |
---|
| 712 | |
---|
| 713 | q. Some `time_t' fixes for machines were a time_t is bigger than a long. |
---|
| 714 | |
---|
| 715 | r. Replaced some bash-specific autoconf macros with standard equivalents. |
---|
| 716 | |
---|
| 717 | s. Improvmed the code that constructs temporary filenames to make the |
---|
| 718 | generated names a bit more random. |
---|
| 719 | |
---|
| 720 | t. Added code that checks for ascii before calling any of the is* ctype |
---|
| 721 | functions. |
---|
| 722 | |
---|
| 723 | u. Changed some places where a `char' was used as an array subscript to use |
---|
| 724 | `unsigned char', since a `char' can be negative if it's signed by default. |
---|
| 725 | |
---|
| 726 | v. Lots of changes to the `ulimit' builtin from Paul Eggert to add support |
---|
| 727 | for the new POSIX-200x RLIM_SAVED_CUR and RLIM_SAVED_MAX values and |
---|
| 728 | simplify the code. |
---|
| 729 | |
---|
| 730 | w. `ulimit' now prints the description of a resource in any error message |
---|
| 731 | relating to fetching or setting that resource's limits. |
---|
| 732 | |
---|
| 733 | x. The `snprintf' replacement now computes maximum values at compile |
---|
| 734 | time rather than using huge constants for things like long long. |
---|
| 735 | |
---|
| 736 | y. Interactive shells now ignore `set -n'. |
---|
| 737 | |
---|
| 738 | z. Changed the malloc bookkeeping information so that it's now 8 bytes |
---|
| 739 | instead of 12 on most 32-bit machines (saving 4 bytes per allocation), |
---|
| 740 | restoring 8-byte alignment. |
---|
| 741 | |
---|
| 742 | aa. The malloc error reporting code now attempts to print the file and line |
---|
| 743 | number of the call that caused the error. |
---|
| 744 | |
---|
| 745 | bb. Changed the redirection error reporting code to catch EBADF errors and |
---|
| 746 | report the file descriptor number rather than the file being redirected |
---|
| 747 | to or from (e.g., things like `exec 4242<x' where 4242 is an out-of-range |
---|
| 748 | file descriptor). |
---|
| 749 | |
---|
| 750 | cc. `printf', `echo -e', and the $'...' code now process only two hex digits |
---|
| 751 | after a `\x' escape sequence for compatibility with other shells, and |
---|
| 752 | the documentation was changed to note that the octal and hex escape |
---|
| 753 | sequences result in an eight-bit value rather than strict ASCII. |
---|
| 754 | |
---|
| 755 | 2. Changes to Readline |
---|
| 756 | |
---|
| 757 | a. The completion code now attempts to do a better job of preserving the |
---|
| 758 | case of the word the user typed if ignoring case in completions. |
---|
| 759 | |
---|
| 760 | b. Readline defaults to not echoing the input and lets the terminal |
---|
| 761 | initialization code enable echoing if there is a controlling terminal. |
---|
| 762 | |
---|
| 763 | c. The key binding code now processes only two hex digits after a `\x' |
---|
| 764 | escape sequence, and the documentation was changed to note that the |
---|
| 765 | octal and hex escape sequences result in an eight-bit value rather |
---|
| 766 | than strict ASCII. |
---|
| 767 | |
---|
| 768 | 3. New Features in Bash |
---|
| 769 | |
---|
| 770 | a. The builtin `ulimit' now takes two new non-numeric arguments: `hard', |
---|
| 771 | meaning the current hard limit, and `soft', meaning the current soft |
---|
| 772 | limit, in addition to `unlimited' |
---|
| 773 | |
---|
| 774 | b. `ulimit' now prints the option letter associated with a particular |
---|
| 775 | resource when printing more than one limit. |
---|
| 776 | |
---|
| 777 | c. `ulimit' prints `hard' or `soft' when a value is not `unlimited' but is |
---|
| 778 | one of RLIM_SAVED_MAX or RLIM_SAVED_CUR, respectively. |
---|
| 779 | |
---|
| 780 | 4. New Features in Readline |
---|
| 781 | |
---|
| 782 | a. New bindable variable `history-preserve-point'. If set, the history |
---|
| 783 | code attempts to place the user at the same location on each history |
---|
| 784 | line retrived with previous-history or next-history. |
---|
| 785 | |
---|
| 786 | ------------------------------------------------------------------------------ |
---|
| 787 | This document details the changes between this version, bash-2.05a-alpha1, |
---|
| 788 | and the previous version, bash-2.05-release. |
---|
| 789 | |
---|
| 790 | 1. Changes to Bash |
---|
| 791 | |
---|
| 792 | a. Better checks in the redirection code for write errors. |
---|
| 793 | |
---|
| 794 | b. bashbug now uses $TMPDIR, defaulting to /tmp, and uses mktemp(1) more |
---|
| 795 | portably. |
---|
| 796 | |
---|
| 797 | c. System-specific configuration changes for: Interix, OpenBSD, FreeBSD, |
---|
| 798 | MacOS X. |
---|
| 799 | |
---|
| 800 | d. Some more `const' cleanups through the code. |
---|
| 801 | |
---|
| 802 | e. Fixed a typo in the /dev/fd redirection code, better checks for valid |
---|
| 803 | numeric fds in /dev/fd. |
---|
| 804 | |
---|
| 805 | f. Fixed many parts of the shell to handle integer overflow more gracefully |
---|
| 806 | and to do more stringent checks for valid numbers. |
---|
| 807 | |
---|
| 808 | g. Fixed mksignames to include config.h. |
---|
| 809 | |
---|
| 810 | h. Fixed an uninitialized variable problem that could cause the shell to core |
---|
| 811 | dump when replacing characters in a string. |
---|
| 812 | |
---|
| 813 | i. New mechanism for updating the patch level when official patches are |
---|
| 814 | released (patchlevel.h). |
---|
| 815 | |
---|
| 816 | j. configure.in changed to no longer require external files _distribution and |
---|
| 817 | _patchlevel. |
---|
| 818 | |
---|
| 819 | k. Fixed non-interactive shell initialization problem when bash started as |
---|
| 820 | `bash -i filename'. |
---|
| 821 | |
---|
| 822 | l. Fixed printf builtin conversion error handling to be POSIX.2-conformant. |
---|
| 823 | |
---|
| 824 | m. autoconf-2.52 is now used to build configure; autoconf-2.50 or newer is |
---|
| 825 | required. Some of the bash-specific macros were removed, since they are |
---|
| 826 | now standard. |
---|
| 827 | |
---|
| 828 | n. Startup files and files read with source or `.' are no longer required to |
---|
| 829 | be regular files. |
---|
| 830 | |
---|
| 831 | o. Fixed core dump in builtin printf when user-supplied precision or field |
---|
| 832 | width is 0. |
---|
| 833 | |
---|
| 834 | p. Fixed builtin printf to treat a negative field width as a positive field |
---|
| 835 | width with left-justification. |
---|
| 836 | |
---|
| 837 | r. New unwind-protect implementation from Paul Eggert. |
---|
| 838 | |
---|
| 839 | s. Fixed an inadvertently-unclosed comment in the bash completion code that |
---|
| 840 | caused programmable completions to not add trailing slashes or spaces to |
---|
| 841 | completions. |
---|
| 842 | |
---|
| 843 | t. Fixed the process substitution code to cope better when stdin is closed. |
---|
| 844 | |
---|
| 845 | v. Fixes, mostly from Paul Eggert, for a few possible buffer overflows in |
---|
| 846 | the shell. |
---|
| 847 | |
---|
| 848 | w. Fixes from Paul Eggert to avoid most of the type casts in the shell code, |
---|
| 849 | and use more appropriate types for a number of variables. |
---|
| 850 | |
---|
| 851 | x. Command substition no longer inherits the DEBUG trap. |
---|
| 852 | |
---|
| 853 | y. Some fixes to the process substition code on machines without /dev/fd so |
---|
| 854 | that named pipes are not removed inappropriately. |
---|
| 855 | |
---|
| 856 | z. The loadable `getconf' builtin is now much more complete, and will become |
---|
| 857 | part of the shell in the future. |
---|
| 858 | |
---|
| 859 | aa. The select command no longer terminates on a `return', so it can be used |
---|
| 860 | to return from an enclosing function (as ksh does it). |
---|
| 861 | |
---|
| 862 | bb. Fixed the extended pattern matching code to behave better when presented |
---|
| 863 | with incorrectly-formed patterns. |
---|
| 864 | |
---|
| 865 | cc. Some changes were made with the intent of making cross-compilation easier. |
---|
| 866 | |
---|
| 867 | dd. The network code (/dev/tcp and /dev/udp redirections) uses getaddrinfo(3) |
---|
| 868 | if it's available, which adds support for IPv6. |
---|
| 869 | |
---|
| 870 | ee. Subshells of login shells no longer source ~/.bash_logout when they exit. |
---|
| 871 | |
---|
| 872 | ff. Fixes so that subshells don't exit inappropriately if the -e option has |
---|
| 873 | been set. |
---|
| 874 | |
---|
| 875 | gg. Restricted shells no longer allow functions to be exported. |
---|
| 876 | |
---|
| 877 | hh. Changes to the pattern matching code so extended pattern matching works |
---|
| 878 | on systems with deficient shared library implementations, like MacOS X. |
---|
| 879 | |
---|
| 880 | ii. Better error messages when a script with a leading `#!interp' fails |
---|
| 881 | to execute because of problems with `interp'. |
---|
| 882 | |
---|
| 883 | jj. Fixed `compgen' to handle the `-o default' option better. |
---|
| 884 | |
---|
| 885 | kk. Fixed the job control code to force an asynchronous process's standard |
---|
| 886 | input to /dev/null only if job control is not active. |
---|
| 887 | |
---|
| 888 | ll. Fixed a possible infinite recursion problem when `fc ""=abc' (a null |
---|
| 889 | pattern) is used to re-execute a previous command. |
---|
| 890 | |
---|
| 891 | mm. Fixed `declare [-a] var=value' to assign VALUE to element 0 if VAR is an |
---|
| 892 | array variable. Similarly for `declare [-a] var[N]=value'. This is like |
---|
| 893 | ksh93. |
---|
| 894 | |
---|
| 895 | nn. Fixed a bug that caused `read -a aname' to work even if ANAME had been |
---|
| 896 | declared readonly. |
---|
| 897 | |
---|
| 898 | oo. Fixed a possible integer overflow problem when constructing names for |
---|
| 899 | temporary files. |
---|
| 900 | |
---|
| 901 | 2. New Features in Bash |
---|
| 902 | |
---|
| 903 | a. Added support for DESTDIR installation root prefix, so you can do a |
---|
| 904 | `make install DESTDIR=bash-root' and do easier binary packaging. |
---|
| 905 | |
---|
| 906 | b. Added support for builtin printf "'" flag character as per latest POSIX |
---|
| 907 | drafts. |
---|
| 908 | |
---|
| 909 | c. Support for POSIX.2 printf(1) length specifiers `j', `t', and `z' (from |
---|
| 910 | ISO C99). |
---|
| 911 | |
---|
| 912 | d. New autoconf macro, RL_LIB_READLINE_VERSION, for use by other applications |
---|
| 913 | (bash doesn't use very much of what it returns). |
---|
| 914 | |
---|
| 915 | e. `set [-+]o nolog' is recognized as required by the latest POSIX drafts, |
---|
| 916 | but ignored. |
---|
| 917 | |
---|
| 918 | f. New read-only `shopt' option: login_shell. Set to non-zero value if the |
---|
| 919 | shell is a login shell. |
---|
| 920 | |
---|
| 921 | g. New `\A' prompt string escape sequence; expands to time in 24 HH:MM format. |
---|
| 922 | |
---|
| 923 | h. New `-A group/-g' option to complete and compgen; does group name |
---|
| 924 | completion. |
---|
| 925 | |
---|
| 926 | i. New `-t' option to `hash' to list hash values for each filename argument. |
---|
| 927 | |
---|
| 928 | j. New [-+]O invocation option to set and unset `shopt' options at startup. |
---|
| 929 | |
---|
| 930 | k. configure's `--with-installed-readline' option now takes an optional |
---|
| 931 | `=PATH' suffix to set the root of the tree where readline is installed |
---|
| 932 | to PATH. |
---|
| 933 | |
---|
| 934 | l. The ksh-like `ERR' trap has been added. The `ERR' trap will be run |
---|
| 935 | whenever the shell would have exited if the -e option were enabled. |
---|
| 936 | It is not inherited by shell functions. |
---|
| 937 | |
---|
| 938 | m. `readonly', `export', and `declare' now print variables which have been |
---|
| 939 | given attributes but not set by assigning a value as just a command and |
---|
| 940 | a variable name (like `export foo') when listing, as the latest POSIX |
---|
| 941 | drafts require. |
---|
| 942 | |
---|
| 943 | n. `bashbug' now requires that the subject be changed from the default. |
---|
| 944 | |
---|
| 945 | o. configure has a new `--enable-largefile' option, like other GNU utilities. |
---|
| 946 | |
---|
| 947 | p. `for' loops now allow empty word lists after `in', like the latest POSIX |
---|
| 948 | drafts require. |
---|
| 949 | |
---|
| 950 | 3. Changes to Readline |
---|
| 951 | |
---|
| 952 | a. More `const' and type casting fixes. |
---|
| 953 | |
---|
| 954 | b. Changed rl_message() to use vsnprintf(3) (if available) to fix buffer |
---|
| 955 | overflow problems. |
---|
| 956 | |
---|
| 957 | c. The completion code no longer appends a `/' or ` ' to a match when |
---|
| 958 | completing a symbolic link that resolves to a directory name, unless |
---|
| 959 | the match does not add anything to the word being completed. This |
---|
| 960 | means that a tab will complete the word up to the full name, but not |
---|
| 961 | add anything, and a subsequent tab will add a slash. |
---|
| 962 | |
---|
| 963 | d. Fixed a trivial typo that made the vi-mode `dT' command not work. |
---|
| 964 | |
---|
| 965 | e. Fixed the tty code so that ^S and ^Q can be inserted with rl_quoted_insert. |
---|
| 966 | |
---|
| 967 | f. Fixed the tty code so that ^V works more than once. |
---|
| 968 | |
---|
| 969 | g. Changed the use of __P((...)) for function prototypes to PARAMS((...)) |
---|
| 970 | because the use of __P in typedefs conflicted g++ and glibc. |
---|
| 971 | |
---|
| 972 | 4. New Features in Readline |
---|
| 973 | |
---|
| 974 | a. Added extern declaration for rl_get_termcap to readline.h, making it a |
---|
| 975 | public function (it was always there, just not in readline.h). |
---|
| 976 | |
---|
| 977 | b. New #defines in readline.h: RL_READLINE_VERSION, currently 0x0402, |
---|
| 978 | RL_VERSION_MAJOR, currently 4, and RL_VERSION_MINOR, currently 2. |
---|
| 979 | |
---|
| 980 | c. New readline variable: rl_readline_version, mirrors RL_READLINE_VERSION. |
---|
| 981 | |
---|
| 982 | d. New bindable boolean readline variable: match-hidden-files. Controls |
---|
| 983 | completion of files beginning with a `.' (on Unix). Enabled by default. |
---|
| 984 | |
---|
| 985 | e. The history expansion code now allows any character to terminate a |
---|
| 986 | `:first-' modifier, like csh. |
---|
| 987 | |
---|
| 988 | f. The incremental search code remembers the last search string and uses |
---|
| 989 | it if ^R^R is typed without a search string. |
---|
| 990 | |
---|
| 991 | ------------------------------------------------------------------------------ |
---|
[16806] | 992 | This document details the changes between this version, bash-2.05-release, |
---|
| 993 | and the previous version, bash-2.05-beta2. |
---|
| 994 | |
---|
| 995 | 1. Changes to Bash |
---|
| 996 | |
---|
| 997 | a. Make sure we note that the first line of a multi-line command was not |
---|
| 998 | saved in the history if the tests for HISTCONTROL succeed, but the |
---|
| 999 | HISTIGNORE check fails. |
---|
| 1000 | |
---|
| 1001 | b. Fixed a bug in the pattern matching code that caused `[' to be treated |
---|
| 1002 | as a special character inside a `[...]' bracket expression. |
---|
| 1003 | |
---|
| 1004 | c. Fixed a bug in the pattern matching code that caused `]' to terminate |
---|
| 1005 | a bracket expression even if it was the first character after the `[' |
---|
| 1006 | (or a leading `!' or `^'). |
---|
| 1007 | |
---|
| 1008 | d. Made a small change to report a more user-friendly error message if |
---|
| 1009 | execve(2) fails because of an error with the interpreter in a script |
---|
| 1010 | with a leading `#! interpreter'. |
---|
| 1011 | |
---|
| 1012 | e. If the OS does not support an exec(2) magic number of `#!', make sure we |
---|
| 1013 | have a non-null interpreter name before attempting to execute it. |
---|
| 1014 | |
---|
| 1015 | f. Fixed a bug that caused the shell process to end up in a different |
---|
| 1016 | process group than the controlling terminal if a job-control shell was |
---|
| 1017 | run with `exec' in the startup files. |
---|
| 1018 | |
---|
| 1019 | g. When started in POSIX mode, either by `bash --posix', `bash -o posix', or |
---|
| 1020 | `sh', $SHELLOPTS includes `posix' and POSIXLY_CORRECT is set. |
---|
| 1021 | |
---|
| 1022 | h. Fixed a problem that caused the `\W' prompt string escape sequence to |
---|
| 1023 | expand to nothing when $PWD was `//'. |
---|
| 1024 | |
---|
| 1025 | i. The `bashbug' shell script no longer uses $(...) command substitution. |
---|
| 1026 | |
---|
| 1027 | j. When `set' is invoked without options in POSIX mode, it no longer prints |
---|
| 1028 | the names and definitions of shell functions. |
---|
| 1029 | |
---|
| 1030 | 2. Changes to Readline |
---|
| 1031 | |
---|
| 1032 | a. rl_set_paren_blink_timeout() is now documented. |
---|
| 1033 | |
---|
| 1034 | b. Corrected history.3 man page: `$' is not in the default value of |
---|
| 1035 | history_word_delimiters. |
---|
| 1036 | |
---|
| 1037 | c. If a hook function assigned to rl_event_hook sets rl_done to a non-zero |
---|
| 1038 | value, rl_read_key() now immediately returns '\n' (which is assumed to |
---|
| 1039 | be bound to accept-line). |
---|
| 1040 | |
---|
| 1041 | 3. New Features in Bash |
---|
| 1042 | |
---|
| 1043 | a. The `>&word' redirection now works in POSIX mode as it does by default, |
---|
| 1044 | since POSIX.2 leaves it unspecified. |
---|
| 1045 | |
---|
| 1046 | ------------------------------------------------------------------------------ |
---|
| 1047 | This document details the changes between this version, bash-2.05-beta2, |
---|
| 1048 | and the previous version, bash-2.05-beta1. |
---|
| 1049 | |
---|
| 1050 | 1. Changes to Bash |
---|
| 1051 | |
---|
| 1052 | a. Fixed a bug in the arithmetic evaluation code so that a^=b is supported. |
---|
| 1053 | |
---|
| 1054 | b. Fixed startup so posixly_correct is retained across subshells begun to |
---|
| 1055 | execute scripts without a leading `#!'. |
---|
| 1056 | |
---|
| 1057 | c. Fixed a bug that caused $(< file) to not work in a (...) subshell. |
---|
| 1058 | |
---|
| 1059 | d. Added config support for Linux running on the IBM S390. |
---|
| 1060 | |
---|
| 1061 | e. Fixed a bug that caused bash to get its input pointer out of sync when |
---|
| 1062 | reading commands through a pipe and running a command with standard |
---|
| 1063 | input redirected from a file. |
---|
| 1064 | |
---|
| 1065 | f. Made a change so that command completion now makes about half as many |
---|
| 1066 | stat(2) calls when searching the $PATH. |
---|
| 1067 | |
---|
| 1068 | g. Fixed a bug that caused variable assignments preceding `return' to not |
---|
| 1069 | be propagated to the shell environment in POSIX mode. |
---|
| 1070 | |
---|
| 1071 | h. Fixed a bug with ${parameter[:]?word} -- tilde expansion was not performed |
---|
| 1072 | on `word'. |
---|
| 1073 | |
---|
| 1074 | i. In POSIX mode, `break' and `continue' do not complain and return success |
---|
| 1075 | if called when the shell is not executing a loop. |
---|
| 1076 | |
---|
| 1077 | j. Fixed `bash -o posix' to work the same as `bash --posix'. |
---|
| 1078 | |
---|
| 1079 | k. Fixed a bug where variable assignments preceding `eval' or `source/.' |
---|
| 1080 | would not show up in the environment exported to subshells run by the |
---|
| 1081 | commands. |
---|
| 1082 | |
---|
| 1083 | l. In POSIX mode, shells started to execute command substitutions inherit |
---|
| 1084 | the value of the `-e' option from their parent shell. |
---|
| 1085 | |
---|
| 1086 | m. In POSIX mode, aliases are expanded even in non-interactive shells. |
---|
| 1087 | |
---|
| 1088 | n. Changed some of the job control messages to display the text required by |
---|
| 1089 | POSIX.2 when the shell is in POSIX mode. |
---|
| 1090 | |
---|
| 1091 | o. Fixed a bug in `test' that caused it to occasionally return incorrect |
---|
| 1092 | results when non-numeric arguments were supplied to `-t'. |
---|
| 1093 | |
---|
| 1094 | 2. Changes to Readline |
---|
| 1095 | |
---|
| 1096 | a. Some changes were made to avoid gcc warnings with -Wall. |
---|
| 1097 | |
---|
| 1098 | b. rl_get_keymap_by_name now finds keymaps case-insensitively, so |
---|
| 1099 | `set keymap EMACS' works. |
---|
| 1100 | |
---|
| 1101 | c. The history file writing and truncation functions now return a useful |
---|
| 1102 | status on error. |
---|
| 1103 | |
---|
| 1104 | d. Fixed a bug that could cause applications to dereference a NULL pointer |
---|
| 1105 | if a NULL second argument was passed to history_expand(). |
---|
| 1106 | |
---|
| 1107 | 3. New Features in Bash |
---|
| 1108 | |
---|
| 1109 | a. doc/readline.3 has been moved to the readline distribution. |
---|
| 1110 | |
---|
| 1111 | 4. New Features in Readline |
---|
| 1112 | |
---|
| 1113 | a. New function, rl_get_screen_size (int *rows, int *columns), returns |
---|
| 1114 | readline's idea of the screen dimensions. |
---|
| 1115 | |
---|
| 1116 | b. The timeout in rl_gather_tyi (readline keyboard input polling function) |
---|
| 1117 | is now settable via a function (rl_set_keyboard_input_timeout()). |
---|
| 1118 | |
---|
| 1119 | c. Renamed the max_input_history variable to history_max_entries; the old |
---|
| 1120 | variable is maintained for backwards compatibility. |
---|
| 1121 | |
---|
| 1122 | d. The list of characters that separate words for the history tokenizer is |
---|
| 1123 | now settable with a variable: history_word_delimiters. The default |
---|
| 1124 | value is as before. |
---|
| 1125 | |
---|
| 1126 | ------------------------------------------------------------------------------ |
---|
| 1127 | This document details the changes between this version, bash-2.05-beta1, |
---|
| 1128 | and the previous version, bash-2.05-alpha1. |
---|
| 1129 | |
---|
| 1130 | 1. Changes to Bash |
---|
| 1131 | |
---|
| 1132 | a. Changes to allow shared library and object building on the GNU Hurd. |
---|
| 1133 | |
---|
| 1134 | b. Fixes to the way exported functions are placed into the environment and |
---|
| 1135 | cached. |
---|
| 1136 | |
---|
| 1137 | c. The globbing library once again respects locales when processing ranges |
---|
| 1138 | in bracket expressions while doing pattern matching. |
---|
| 1139 | |
---|
| 1140 | d. System-specific configuration changes for: Tru 64, Interix |
---|
| 1141 | |
---|
| 1142 | e. Bashbug now uses /usr/bin/editor as one of the editing alternatives, and |
---|
| 1143 | will use mktemp(1) or tempfile(1), if present, for temporary file creation. |
---|
| 1144 | |
---|
| 1145 | f. Bash no longer performs a binary file check on a script argument that's |
---|
| 1146 | really a tty (like /dev/fd/0 or /dev/stdin). |
---|
| 1147 | |
---|
| 1148 | g. Fixed a bug in the execution of shell scripts that caused the effects of |
---|
| 1149 | $BASH_ENV to be undone in some cases. |
---|
| 1150 | |
---|
| 1151 | h. Fixed several bugs that made `bash [-i] /dev/stdin' not work correctly. |
---|
| 1152 | |
---|
| 1153 | i. Several changes to the job control code to avoid some signal state |
---|
| 1154 | manipulation. |
---|
| 1155 | |
---|
| 1156 | j. The Bash malloc no longer blocks signals as often, which should make it |
---|
| 1157 | faster. |
---|
| 1158 | |
---|
| 1159 | k. Fixed a parsing bug that did not allow backslash to escape a single quote |
---|
| 1160 | inside a $'...' construct. |
---|
| 1161 | |
---|
| 1162 | l. Fixed a bug that caused things like ${var:=$'value'} to be parsed |
---|
| 1163 | incorrectly. This showed up in newer versions of autoconf. |
---|
| 1164 | |
---|
| 1165 | m. Fixed a bug in the bash-specific readline initialization that caused |
---|
| 1166 | key bindings to bash-specific function names appearing in .inputrc to |
---|
| 1167 | not be honored. |
---|
| 1168 | |
---|
| 1169 | n. Bash now sets the file descriptor it uses to save the file descriptor |
---|
| 1170 | opened on a shell script to close on exec. |
---|
| 1171 | |
---|
| 1172 | o. Fixed a bug in the prompt string decoding that caused it to misbehave |
---|
| 1173 | when presented an octal sequence of fewer than three characters. |
---|
| 1174 | |
---|
| 1175 | p. Fixed the `test' builtin to return an error if `[' is supplied a single |
---|
| 1176 | argument that is not `]'. |
---|
| 1177 | |
---|
| 1178 | q. Fixed a bug that caused subshells started to run executable shell scripts |
---|
| 1179 | without a leading `#!' to incorrectly inherit an argument list preceding |
---|
| 1180 | a shell builtin (like such a script called from a script sourced with `.', |
---|
| 1181 | where there were variable assignments preceding the `.' command) |
---|
| 1182 | |
---|
| 1183 | r. Fixed a bug that caused changes to variables supplied in an assignment |
---|
| 1184 | statement preceding a shell builtin to not be honored (like a script |
---|
| 1185 | run with `.'). |
---|
| 1186 | |
---|
| 1187 | s. HOSTTYPE, OSTYPE, and MACHTYPE are set only if they do not have values |
---|
| 1188 | when the shell is started. |
---|
| 1189 | |
---|
| 1190 | t. Fixed a bug that caused SIGINT to kill shell scripts after the script |
---|
| 1191 | called `wait'. |
---|
| 1192 | |
---|
| 1193 | u. The `fc' builtin now tries to create its temporary files in the directory |
---|
| 1194 | named by $TMPDIR. |
---|
| 1195 | |
---|
| 1196 | v. Bash no longer calls any Readline functions or uses any Readline variables |
---|
| 1197 | not declared in readline.h. |
---|
| 1198 | |
---|
| 1199 | w. Fixed a bug that caused some substitutions involving $@ to not be split |
---|
| 1200 | correctly, especially expansions of the form ${paramterOPword}. |
---|
| 1201 | |
---|
| 1202 | x. SSH2_CLIENT is now treated like SSH_CLIENT and not auto-exported if it |
---|
| 1203 | appears in the initial environment. |
---|
| 1204 | |
---|
| 1205 | y. Fixed a couple of problems with shell scripts without a leading `#!' |
---|
| 1206 | being executed out of shell functions that could cause core dumps if |
---|
| 1207 | such a script attempted to execute `return'. |
---|
| 1208 | |
---|
| 1209 | z. Fixed a problem with the `-nt' and `-ot' binary operators for the |
---|
| 1210 | `test/[' builtin and the `[[' conditional command that caused wrong |
---|
| 1211 | return values if one of the file arguments did not exist. |
---|
| 1212 | |
---|
| 1213 | aa. Fixed a bug that caused non-interactive shells which had previously |
---|
| 1214 | executed `shopt -s expand_aliases' to fail to expand aliases in a |
---|
| 1215 | command like `(command) &'. |
---|
| 1216 | |
---|
| 1217 | 2. Changes to Readline |
---|
| 1218 | |
---|
| 1219 | a. Changes to make most (but not yet all -- there is still crlf()) of the |
---|
| 1220 | exported readline functions declared in readline.h have an rl_ prefix. |
---|
| 1221 | |
---|
| 1222 | b. More `const' changes in function arguments, mostly for completion |
---|
| 1223 | functions. |
---|
| 1224 | |
---|
| 1225 | c. Fixed a bug in rl_forward that could cause the point to be set to before |
---|
| 1226 | the beginning of the line in vi mode. |
---|
| 1227 | |
---|
| 1228 | d. Fixed a bug in the callback read-char interface to make it work when a |
---|
| 1229 | readline function pushes some input onto the input stream with |
---|
| 1230 | rl_execute_next (like the incremental search functions). |
---|
| 1231 | |
---|
| 1232 | e. Fixed a file descriptor leak in the history file manipulation code that |
---|
| 1233 | was tripped when attempting to truncate a non-regular file (like |
---|
| 1234 | /dev/null). |
---|
| 1235 | |
---|
| 1236 | f. Some existing variables are now documented and part of the public |
---|
| 1237 | interface (declared in readline.h): rl_explict_arg, rl_numeric_arg, |
---|
| 1238 | rl_editing_mode, rl_last_func. |
---|
| 1239 | |
---|
| 1240 | g. Renamed rltty_set_default_bindings to rl_tty_set_default_bindings and |
---|
| 1241 | crlf to rl_crlf, so there are no public functions declared in readline.h |
---|
| 1242 | without an `rl_' prefix. The old functions still exist for backwards |
---|
| 1243 | compatibility. |
---|
| 1244 | |
---|
| 1245 | 3. New Features in Bash |
---|
| 1246 | |
---|
| 1247 | a. A new loadable builtin, realpath, which canonicalizes and expands symlinks |
---|
| 1248 | in pathname arguments. |
---|
| 1249 | |
---|
| 1250 | b. When `set' is called without options, it prints function defintions in a |
---|
| 1251 | way that allows them to be reused as input. This affects `declare' and |
---|
| 1252 | `declare -p' as well. |
---|
| 1253 | |
---|
| 1254 | 4. New Features in Readline |
---|
| 1255 | |
---|
| 1256 | a. New application-callable function rl_set_prompt(const char *prompt): |
---|
| 1257 | expands its prompt string argument and sets rl_prompt to the result. |
---|
| 1258 | |
---|
| 1259 | b. New application-callable function rl_set_screen_size(int rows, int cols): |
---|
| 1260 | public method for applications to set readline's idea of the screen |
---|
| 1261 | dimensions. |
---|
| 1262 | |
---|
| 1263 | c. The history example program (examples/histexamp.c) is now built as one |
---|
| 1264 | of the examples. |
---|
| 1265 | |
---|
| 1266 | ------------------------------------------------------------------------------ |
---|
| 1267 | This document details the changes between this version, bash-2.05-alpha1, |
---|
| 1268 | and the previous version, bash-2.04-release. |
---|
| 1269 | |
---|
| 1270 | 1. Changes to Bash |
---|
| 1271 | |
---|
| 1272 | a. A fix was made to allow newlines in compond array assignments. |
---|
| 1273 | |
---|
| 1274 | b. configure now checks for real-time signals with unusable values. |
---|
| 1275 | |
---|
| 1276 | c. Interactive shells no longer exit if a substitution fails because of an |
---|
| 1277 | unset variable within a sourced file. |
---|
| 1278 | |
---|
| 1279 | d. Fixed a problem with incorrect matching of extended glob patterns when |
---|
| 1280 | doing pattern substitution. |
---|
| 1281 | |
---|
| 1282 | e. `{' is now quoted by the completion code when it appears in a filename. |
---|
| 1283 | |
---|
| 1284 | f. Fixed an error in pattern matching that caused the matcher to not |
---|
| 1285 | correctly skip the rest of a bracket expression after a character |
---|
| 1286 | matched. |
---|
| 1287 | |
---|
| 1288 | g. Fixed a bug in the IFS word splitting code to make a non-whitespace IFS |
---|
| 1289 | character preceded by IFS whitespace part of the current delimiter rather |
---|
| 1290 | than generating a separate field. |
---|
| 1291 | |
---|
| 1292 | h. The {!prefix@} expansion now generates separate words, analogous to $@, |
---|
| 1293 | when double-quoted. |
---|
| 1294 | |
---|
| 1295 | i. Command substitution now ignores NUL bytes in the command output, and the |
---|
| 1296 | parser ignores them on input. |
---|
| 1297 | |
---|
| 1298 | j. A fix was made to the job control code to prevent hanging processes when |
---|
| 1299 | the shell thinks background processes are running but the kernel returns |
---|
| 1300 | -1/ECHILD from waitpid(). |
---|
| 1301 | |
---|
| 1302 | k. `pwd' now prints an error message if the write fails when displaying the |
---|
| 1303 | current directory. |
---|
| 1304 | |
---|
| 1305 | l. When in POSIX mode, the shell prints trap dispostions without a leading |
---|
| 1306 | `SIG' in the signal specification. |
---|
| 1307 | |
---|
| 1308 | m. Fixed a parser bug that caused the current command's line count to be |
---|
| 1309 | messed up by a compound array assignment. |
---|
| 1310 | |
---|
| 1311 | n. Fixed a bug in the unwind-protect code that caused bad behavior on machines |
---|
| 1312 | where ints and pointers are not the same size. |
---|
| 1313 | |
---|
| 1314 | o. System-specific configure changes for: MacOS X. |
---|
| 1315 | |
---|
| 1316 | p. Changes for Cygwin to translate \r\n and \r to \n and to set file |
---|
| 1317 | descriptors used for reading input to text mode in various places. |
---|
| 1318 | |
---|
| 1319 | q. Fixed a bug that caused `!' to occasionally not be honored when in |
---|
| 1320 | a (...) subshell. |
---|
| 1321 | |
---|
| 1322 | r. Bash no longer assumes that getcwd() will return any useful error message |
---|
| 1323 | in the buffer passed as an argument if the call fails. |
---|
| 1324 | |
---|
| 1325 | s. The `source', `.', and `fc' builtins no longer check whether a file is |
---|
| 1326 | binary before reading commands from it. |
---|
| 1327 | |
---|
| 1328 | t. Subshells no longer turn off job control when they exit, since that |
---|
| 1329 | sometimes resulted in the terminal being reset to the wrong process |
---|
| 1330 | group. |
---|
| 1331 | |
---|
| 1332 | u. The history code no longer tries to save the second and subsequent lines |
---|
| 1333 | of a multi-line command if the first line was not saved. |
---|
| 1334 | |
---|
| 1335 | v. The history saving code now does a better job of saving blank lines in a |
---|
| 1336 | multi-line command. |
---|
| 1337 | |
---|
| 1338 | w. Removed a `feature' that made `ulimit' silently translate `unlimited' to |
---|
| 1339 | the current hard limit, which obscured some kernel error returns. |
---|
| 1340 | |
---|
| 1341 | x. Fixed the grammar so that `}' is recognized as a reserved word after |
---|
| 1342 | another reserved word, rather than requiring a `;' or newline. This |
---|
| 1343 | means that constructs like |
---|
| 1344 | |
---|
| 1345 | { { echo a b c ; } } |
---|
| 1346 | |
---|
| 1347 | work as expected. |
---|
| 1348 | |
---|
| 1349 | y. Conditional commands ([[...]]) now perform tilde expansion on their |
---|
| 1350 | arguments. |
---|
| 1351 | |
---|
| 1352 | z. Noted in the documentation that `set -a' will cause functions to be |
---|
| 1353 | exported if they are defined after `set -a' is executed. |
---|
| 1354 | |
---|
| 1355 | aa. When an interactive login shell starts, if $PWD and $HOME refer to the |
---|
| 1356 | same directory but are not the same string, $PWD is set to $HOME. |
---|
| 1357 | |
---|
| 1358 | bb. Fixed `printf' to handle invalid floating point numbers better. |
---|
| 1359 | |
---|
| 1360 | cc. Temporary files are now created with random filenames, to improve security. |
---|
| 1361 | |
---|
| 1362 | dd. The readline initialization code now binds the custom bash functions and |
---|
| 1363 | key bindings after the readline defaults are set up. |
---|
| 1364 | |
---|
| 1365 | ee. Fixed the `source' builtin to no longer overwrite a shell function's |
---|
| 1366 | argument list, even if the sourced file changes the positional parameters. |
---|
| 1367 | |
---|
| 1368 | ff. A bug fix was made in the expansion of `$*' in contexts where it should |
---|
| 1369 | not be split, like assignment statements. |
---|
| 1370 | |
---|
| 1371 | gg. Fixed a bug in the parameter substring expansion to handle conditional |
---|
| 1372 | arithmetic expressions ( exp ? val1 : val2 ) without cutting the expression |
---|
| 1373 | off at the wrong `:'. |
---|
| 1374 | |
---|
| 1375 | hh. The `<>' redirection is no longer subject to the current setting of |
---|
| 1376 | `noclobber', as POSIX.2 specifies. |
---|
| 1377 | |
---|
| 1378 | ii. Fixed a bug in the conditional command parsing code that caused expressions |
---|
| 1379 | in parentheses to occasionally be parsed incorrectly. |
---|
| 1380 | |
---|
| 1381 | jj. Fixed a bug in the ((...)) arithmetic command to allow do...done or |
---|
| 1382 | {...} to follow the )) without an intervening list terminator. |
---|
| 1383 | |
---|
| 1384 | kk. `printf' now treats `\E' the same as `\e' when performing backslash escape |
---|
| 1385 | expansion for the `%b' format specifier. |
---|
| 1386 | |
---|
| 1387 | ll. When in POSIX mode, the shell no longer searches the current directory for |
---|
| 1388 | a file to be sourced with `.' or `source' if `.' is not in $PATH. |
---|
| 1389 | |
---|
| 1390 | mm. Interactive comments are no longer turned off when POSIX mode is disabled. |
---|
| 1391 | |
---|
| 1392 | nn. The UID, EUID, HOSTNAME variables are not set if they are in the shell's |
---|
| 1393 | environment when it starts up. |
---|
| 1394 | |
---|
| 1395 | oo. Fixed a bug in the `command' builtin so the effect of a command like |
---|
| 1396 | `command exec 4<file' is as if the `command' had been omitted. |
---|
| 1397 | |
---|
| 1398 | pp. ${foo[@]} and ${foo[*]} now work as in ksh93 if `foo' is not an array |
---|
| 1399 | variable. |
---|
| 1400 | |
---|
| 1401 | qq. ${#foo[X]}, where X is 0, @, or *, now work as in ksh93 if `foo' is not |
---|
| 1402 | an array variable. |
---|
| 1403 | |
---|
| 1404 | rr. The shell's idea of an absolute pathname now takes into account a |
---|
| 1405 | possible drive specification on Cygwin and other Windows systems. |
---|
| 1406 | |
---|
| 1407 | ss. Fixed a bug which caused incorrect parsing of some multi-character |
---|
| 1408 | constructs if they were split across input lines with backslash-newline |
---|
| 1409 | line continuation. |
---|
| 1410 | |
---|
| 1411 | tt. Fixed a bug that caused restricted shell mode to be set inappropriately |
---|
| 1412 | when trying to execute a shell script without a leading `#!'. |
---|
| 1413 | |
---|
| 1414 | uu. Shell function definitions no longer require that the body be a group |
---|
| 1415 | command ( {...} ), as POSIX.2 requires. |
---|
| 1416 | |
---|
| 1417 | vv. The `cd' and `pwd' builtins now process symlinks in pathnames internally |
---|
| 1418 | and should require many fewer calls to getcwd(). |
---|
| 1419 | |
---|
| 1420 | ww. Fixed a bug that caused a pipeline's process group to be set incorrectly |
---|
| 1421 | if one of the pipeline elements contained a command substitution. |
---|
| 1422 | |
---|
| 1423 | xx. Fixed a bug that caused core dumps when expanding the value of HISTIGNORE. |
---|
| 1424 | |
---|
| 1425 | yy. The output of `set' is now quoted using $'...' so invisible characters are |
---|
| 1426 | displayed as escape sequences. |
---|
| 1427 | |
---|
| 1428 | zz. Fixed the help text for `unset', since PATH and IFS may both be unset. |
---|
| 1429 | |
---|
| 1430 | aaa. The shell no longer puts directory names into the command hash table. |
---|
| 1431 | |
---|
| 1432 | bbb. Fixed a bug in `read' that caused it to occasionally free memory twice if |
---|
| 1433 | it was interrupted after reading a large amount of data. |
---|
| 1434 | |
---|
| 1435 | ccc. Assignment statements that attempt to assign values to readonly variables |
---|
| 1436 | now cause the command to return an error status. |
---|
| 1437 | |
---|
| 1438 | ddd. Fixed a bug that could cause incorrect output if a $(<file) construct was |
---|
| 1439 | interrupted. |
---|
| 1440 | |
---|
| 1441 | eee. GROUPS and FUNCNAME now return an error status when assignment is |
---|
| 1442 | attempted, but may be unset (in which case they lose their special |
---|
| 1443 | properties). In all respects except unsetting, they are readonly. |
---|
| 1444 | |
---|
| 1445 | fff. The string-to-integer conversion code now ignores trailing whitespace in |
---|
| 1446 | the string, even if strtol(3) does not. |
---|
| 1447 | |
---|
| 1448 | ggg. The tcsh magic-space function now does a better job of inserting the |
---|
| 1449 | space close to where the point was before the history expansion, rather |
---|
| 1450 | than just appending it. |
---|
| 1451 | |
---|
| 1452 | hhh. Fixed a bug which caused a file sourced from an interactive shell to |
---|
| 1453 | fill up the jobs table if it ran lots of jobs. |
---|
| 1454 | |
---|
| 1455 | iii. Fixed a bug in the parameter pattern substitution code to avoid infinite |
---|
| 1456 | recursion on zero-length matches. |
---|
| 1457 | |
---|
| 1458 | 2. Changes to Readline |
---|
| 1459 | |
---|
| 1460 | a. When setting the terminal attributes on systems using `struct termio', |
---|
| 1461 | readline waits for output to drain before changing the attributes. |
---|
| 1462 | |
---|
| 1463 | b. A fix was made to the history word tokenization code to avoid attempts to |
---|
| 1464 | dereference a null pointer. |
---|
| 1465 | |
---|
| 1466 | c. Readline now defaults rl_terminal_name to $TERM if the calling application |
---|
| 1467 | has left it unset, and tries to initialize with the resultant value. |
---|
| 1468 | |
---|
| 1469 | d. Instead of calling (*rl_getc_function)() directly to get input in certain |
---|
| 1470 | places, readline now calls rl_read_key() consistently. |
---|
| 1471 | |
---|
| 1472 | e. Fixed a bug in the completion code that allowed a backslash to quote a |
---|
| 1473 | single quote inside a single-quoted string. |
---|
| 1474 | |
---|
| 1475 | f. rl_prompt is no longer assigned directly from the argument to readline(), |
---|
| 1476 | but uses memory allocated by readline. This allows constant strings to |
---|
| 1477 | be passed to readline without problems arising when the prompt processing |
---|
| 1478 | code wants to modify the string. |
---|
| 1479 | |
---|
| 1480 | g. Fixed a bug that caused non-interactive history searches to return the |
---|
| 1481 | wrong line when performing multiple searches backward for the same string. |
---|
| 1482 | |
---|
| 1483 | h. Many variables, function arguments, and function return values are now |
---|
| 1484 | declared `const' where appropriate, to improve behavior when linking with |
---|
| 1485 | C++ code. |
---|
| 1486 | |
---|
| 1487 | i. The control character detection code now works better on systems where |
---|
| 1488 | `char' is unsigned by default. |
---|
| 1489 | |
---|
| 1490 | j. The vi-mode numeric argument is now capped at 999999, just like emacs mode. |
---|
| 1491 | |
---|
| 1492 | k. The Function, CPFunction, CPPFunction, and VFunction typedefs have been |
---|
| 1493 | replaced with a set of specific prototyped typedefs, though they are |
---|
| 1494 | still in the readline header files for backwards compatibility. |
---|
| 1495 | |
---|
| 1496 | m. Nearly all of the (undocumented) internal global variables in the library |
---|
| 1497 | now have an _rl_ prefix -- there were a number that did not, like |
---|
| 1498 | screenheight, screenwidth, alphabetic, etc. |
---|
| 1499 | |
---|
| 1500 | n. The ding() convenience function has been renamed to rl_ding(), though the |
---|
| 1501 | old function is still defined for backwards compatibility. |
---|
| 1502 | |
---|
| 1503 | o. The completion convenience functions filename_completion_function, |
---|
| 1504 | username_completion_function, and completion_matches now have an rl_ |
---|
| 1505 | prefix, though the old names are still defined for backwards compatibility. |
---|
| 1506 | |
---|
| 1507 | p. The functions shared by readline and bash (linkage is satisfied from bash |
---|
| 1508 | when compiling with bash, and internally otherwise) now have an sh_ prefix. |
---|
| 1509 | |
---|
| 1510 | q. Changed the shared library creation procedure on Linux and BSD/OS 4.x so |
---|
| 1511 | that the `soname' contains only the major version number rather than the |
---|
| 1512 | major and minor numbers. |
---|
| 1513 | |
---|
| 1514 | r. Fixed a redisplay bug that occurred when the prompt spanned more than one |
---|
| 1515 | physical line and contained invisible characters. |
---|
| 1516 | |
---|
| 1517 | 3. New Features in Bash |
---|
| 1518 | |
---|
| 1519 | a. Added a new `--init-file' invocation argument as a synonym for `--rcfile', |
---|
| 1520 | per the new GNU coding standards. |
---|
| 1521 | |
---|
| 1522 | b. The /dev/tcp and /dev/udp redirections now accept service names as well as |
---|
| 1523 | port numbers. |
---|
| 1524 | |
---|
| 1525 | c. `complete' and `compgen' now take a `-o value' option, which controls some |
---|
| 1526 | of the aspects of that compspec. Valid values are: |
---|
| 1527 | |
---|
| 1528 | default - perform bash default completion if programmable |
---|
| 1529 | completion produces no matches |
---|
| 1530 | dirnames - perform directory name completion if programmable |
---|
| 1531 | completion produces no matches |
---|
| 1532 | filenames - tell readline that the compspec produces filenames, |
---|
| 1533 | so it can do things like append slashes to |
---|
| 1534 | directory names and suppress trailing spaces |
---|
| 1535 | |
---|
| 1536 | 4. New Features in Readline |
---|
| 1537 | |
---|
| 1538 | a. The blink timeout for paren matching is now settable by applications. |
---|
| 1539 | |
---|
| 1540 | b. _rl_executing_macro has been renamed to rl_executing_macro, which means |
---|
| 1541 | it's now part of the public interface. |
---|
| 1542 | |
---|
| 1543 | c. Readline has a new variable, rl_readline_state, which is a bitmap that |
---|
| 1544 | encapsulates the current state of the library; intended for use by |
---|
| 1545 | callbacks and hook functions. |
---|
| 1546 | |
---|
| 1547 | ------------------------------------------------------------------------------ |
---|
| 1548 | This document details the changes between this version, bash-2.04-release, |
---|
| 1549 | and the previous version, bash-2.04-beta5. |
---|
| 1550 | |
---|
| 1551 | 1. Changes to Bash |
---|
| 1552 | |
---|
| 1553 | a. Better compile-time and configure-time checks for the necessity of |
---|
| 1554 | inet_aton(). |
---|
| 1555 | |
---|
| 1556 | b. A bug was fixed in the expansion of "${@:-}" when there are positional |
---|
| 1557 | parameters. |
---|
| 1558 | |
---|
| 1559 | c. A typo was fixed in the output of `complete'. |
---|
| 1560 | |
---|
| 1561 | d. The matches generated for a word by the `-W' argument to complete and |
---|
| 1562 | compgen are now matched against the word being completed, and only |
---|
| 1563 | matches are returned as the result. |
---|
| 1564 | |
---|
| 1565 | e. Some fixes were made for systems which do not restart read(2) when a |
---|
| 1566 | signal caught by bash is received. |
---|
| 1567 | |
---|
| 1568 | f. A bug was fixed which caused the umask to be set to 0 when an invalid |
---|
| 1569 | symbolic mode mask was parsed. |
---|
| 1570 | |
---|
| 1571 | g. Fixed a bug that could cause a core dump if a SIGCHLD was received while |
---|
| 1572 | performing an assignment statement using command substitution. |
---|
| 1573 | |
---|
| 1574 | h. Changed the word splitting function for programmable completion so cases |
---|
| 1575 | in which the cursor is between words are handled a bit better. |
---|
| 1576 | |
---|
| 1577 | 2. Changes to Readline |
---|
| 1578 | |
---|
| 1579 | a. rl_funmap_names() is now documented. |
---|
| 1580 | |
---|
| 1581 | 3. New Features in Bash |
---|
| 1582 | |
---|
| 1583 | a. The LC_NUMERIC variable is now treated specially, and used to set the |
---|
| 1584 | LC_NUMERIC locale category for number formatting, e.g., when `printf' |
---|
| 1585 | displays floating-point numbers. |
---|
| 1586 | |
---|
| 1587 | ------------------------------------------------------------------------------ |
---|
| 1588 | This document details the changes between this version, bash-2.04-beta5, |
---|
| 1589 | and the previous version, bash-2.04-beta4. |
---|
| 1590 | |
---|
| 1591 | 1. Changes to Bash |
---|
| 1592 | |
---|
| 1593 | a. A couple of changes were made to the Makefiles for easier building on |
---|
| 1594 | non-Unix systems. |
---|
| 1595 | |
---|
| 1596 | b. Fixed a bug where the current prompt would be set to $PS2 at startup. |
---|
| 1597 | |
---|
| 1598 | c. The shell script that tests an already-installed version was changed to |
---|
| 1599 | remove the directory it created its test programs in at exit. |
---|
| 1600 | |
---|
| 1601 | d. Several changes were made to the code that tokenizes an input line for |
---|
| 1602 | the programmable completion code. Shell metacharacters will now appear |
---|
| 1603 | as individual words in the word list passed to the completion functions. |
---|
| 1604 | Some of the example completion shell functions were changed to understand |
---|
| 1605 | redirection operators. |
---|
| 1606 | |
---|
| 1607 | e. A bug was fixed that, under obscure circumstances, could confuse the |
---|
| 1608 | parser when a shell function was run by the programmable completion code. |
---|
| 1609 | |
---|
| 1610 | f. A bug was fixed in the ulimit builtin for systems not using getrlimit(). |
---|
| 1611 | |
---|
| 1612 | g. The execution code now propagates the correct exit status back to the rest |
---|
| 1613 | of the code if the return value of a subshell command was being inverted. |
---|
| 1614 | Some new test cases for inverting return values with the `!' reserved |
---|
| 1615 | word have been added. |
---|
| 1616 | |
---|
| 1617 | h. Negative exponents in the arithmetic evaluation of v**e now return an |
---|
| 1618 | evaluation error. |
---|
| 1619 | |
---|
| 1620 | i. A bug that caused bash to check the wrong process in a pipeline for |
---|
| 1621 | abnormal termination (and consequently resetting the terminal attributes) |
---|
| 1622 | was fixed. |
---|
| 1623 | |
---|
| 1624 | j. Fixed a bug that caused $PS2 to be displayed after PROMPT_COMMAND was |
---|
| 1625 | executed. |
---|
| 1626 | |
---|
| 1627 | 2. Changes to Readline |
---|
| 1628 | |
---|
| 1629 | 1. Fixed a bug in a C preprocessor define that caused the keypad control |
---|
| 1630 | functions to be compiled out for all platforms except DJGPP. |
---|
| 1631 | |
---|
| 1632 | ------------------------------------------------------------------------------ |
---|
| 1633 | This document details the changes between this version, bash-2.04-beta4, |
---|
| 1634 | and the previous version, bash-2.04-beta3. |
---|
| 1635 | |
---|
| 1636 | 1. Changes to Bash |
---|
| 1637 | |
---|
| 1638 | a. A couple of changes were made to the redirection to attempt to avoid |
---|
| 1639 | race conditions and malicious file replacement. |
---|
| 1640 | |
---|
| 1641 | 2. A change was made to the string evaluation code (used for command |
---|
| 1642 | substitution, `eval', and the `.' builtin) to fix an obscure core |
---|
| 1643 | dump on alpha machines. |
---|
| 1644 | |
---|
| 1645 | 3. A bug that caused $LINENO to be wrong when executing arithmetic for |
---|
| 1646 | commands was fixed. |
---|
| 1647 | |
---|
| 1648 | 4. A couple of memory leaks in the programmable completion code were fixed. |
---|
| 1649 | |
---|
| 1650 | 5. A bug that could cause a core dump by freeing memory twice during a call |
---|
| 1651 | to `eval' if `set -u' had been enabled and an undefined variable was |
---|
| 1652 | referenced was fixed. |
---|
| 1653 | |
---|
| 1654 | ------------------------------------------------------------------------------ |
---|
| 1655 | This document details the changes between this version, bash-2.04-beta3, |
---|
| 1656 | and the previous version, bash-2.04-beta2. |
---|
| 1657 | |
---|
| 1658 | 1. Changes to Bash |
---|
| 1659 | |
---|
| 1660 | a. Bash should run the appropriate startup files when invoked by ssh2. |
---|
| 1661 | |
---|
| 1662 | b. Fixed a bug in the parsing of conditional commands that could cause a |
---|
| 1663 | core dump. |
---|
| 1664 | |
---|
| 1665 | c. Fixed a bug in parsing job specifications that occasionally caused |
---|
| 1666 | core dumps when an out-of-range job was referenced. |
---|
| 1667 | |
---|
| 1668 | d. Fixed the `type' and `command' builtins to do better reporting of |
---|
| 1669 | commands that are not found in $PATH or the hash table. |
---|
| 1670 | |
---|
| 1671 | e. Fixed a POSIX.2 compliance problem in the command builtin -- commands |
---|
| 1672 | are supposed to be reported as full pathnames. |
---|
| 1673 | |
---|
| 1674 | f. The `echo' builtin now returns failure if a write error occurs. |
---|
| 1675 | |
---|
| 1676 | g. Fixed a bug which caused the locale to not be reset correctly when |
---|
| 1677 | LC_ALL was unset. |
---|
| 1678 | |
---|
| 1679 | h. Changed description of `getopts' in man page and reference manual to make |
---|
| 1680 | it clear that option characters may be characters other than letters. |
---|
| 1681 | |
---|
| 1682 | i. If the shell exits while in a function, make sure that any trap on EXIT |
---|
| 1683 | doesn't think the function is still executing. |
---|
| 1684 | |
---|
| 1685 | j. Bashbug now tries harder to find a usable editor if $EDITOR is not set, |
---|
| 1686 | rather than simply defaulting to `emacs'. |
---|
| 1687 | |
---|
| 1688 | k. Changes to the scripts that guess and canonicalize the system type, from |
---|
| 1689 | the latest `automake' distribution via Debian. |
---|
| 1690 | |
---|
| 1691 | l. When using named pipes for process substitution, make sure the file |
---|
| 1692 | descriptors opened for reading are set to non-blocking mode. |
---|
| 1693 | |
---|
| 1694 | m. Fixed a bug that caused termination of pipelines that are killed by a |
---|
| 1695 | signal to not be reported in some cases. |
---|
| 1696 | |
---|
| 1697 | n. When not in literal-history mode, shell comment lines are not added to |
---|
| 1698 | the history list. |
---|
| 1699 | |
---|
| 1700 | o. When running in POSIX.2 mode, bash no longer performs word splitting on |
---|
| 1701 | the expanded value of the word supplied as the filename argument to |
---|
| 1702 | redirection operators. |
---|
| 1703 | |
---|
| 1704 | p. The prompt string decoding code now backslash-quotes only characters that |
---|
| 1705 | are special within double quotes when expanding the \w and \W escape |
---|
| 1706 | sequences. |
---|
| 1707 | |
---|
| 1708 | q. Fixed a bug in the prompt decoding code that could cause a non-interactive |
---|
| 1709 | shell to seg fault if `\u' was used in PS4 and the shell was in xtrace |
---|
| 1710 | mode. |
---|
| 1711 | |
---|
| 1712 | r. Fixed a bug that caused function definitions to be printed with any |
---|
| 1713 | redirections that should be attached to the entire function before the |
---|
| 1714 | closing brace. |
---|
| 1715 | |
---|
| 1716 | s. Changed the tilde expansion code for Cygwin systems to avoid creating |
---|
| 1717 | pathnames beginning with `//' if $HOME == `/'. |
---|
| 1718 | |
---|
| 1719 | t. Fixed a couple of autoconf tests to avoid creating files with fixed names |
---|
| 1720 | in /tmp. |
---|
| 1721 | |
---|
| 1722 | u. The `trap' and `kill' builtins now know the names of the POSIX.1b real- |
---|
| 1723 | time signals on systems which support them. |
---|
| 1724 | |
---|
| 1725 | 2. Changes to Readline |
---|
| 1726 | |
---|
| 1727 | a. Fixed a problem with the single-quote quoting function that could cause |
---|
| 1728 | buffer overflows. |
---|
| 1729 | |
---|
| 1730 | b. Fixed a bug that caused incorrect `stat characters' to be printed if |
---|
| 1731 | the files being completed were in the root directory and visible-stats |
---|
| 1732 | was enabled. |
---|
| 1733 | |
---|
| 1734 | 3. New Features in Bash |
---|
| 1735 | |
---|
| 1736 | a. There is a new `rbash.1' manual page, from the Debian release. |
---|
| 1737 | |
---|
| 1738 | b. The `--enable-usg-echo-default' option to `configure' has been renamed to |
---|
| 1739 | `--enable-xpg-echo-default'. The old option is still there for backwards |
---|
| 1740 | compatibility. |
---|
| 1741 | |
---|
| 1742 | ------------------------------------------------------------------------------ |
---|
| 1743 | This document details the changes between this version, bash-2.04-beta2, |
---|
| 1744 | and the previous version, bash-2.04-beta1. |
---|
| 1745 | |
---|
| 1746 | 1. Changes to Bash |
---|
| 1747 | |
---|
| 1748 | a. Fixed a bug that could cause pipes to be closed inappropriately in |
---|
| 1749 | some obscure cases. |
---|
| 1750 | |
---|
| 1751 | b. Fixed a bug that caused creation of the exported environment to clobber |
---|
| 1752 | the current command string if there were any exported shell functions. |
---|
| 1753 | |
---|
| 1754 | c. Some changes were made to reduce bash's memory usage. |
---|
| 1755 | |
---|
| 1756 | d. Fixed a problem with programmable completion and filenames to be |
---|
| 1757 | completed containing quote characters. |
---|
| 1758 | |
---|
| 1759 | e. Changed the code the removes named pipes created for the <(...) and >(...) |
---|
| 1760 | expansions to defer removal until after any current shell function has |
---|
| 1761 | finished executing. |
---|
| 1762 | |
---|
| 1763 | f. Fixed a bug in `select' which caused it to not handle the `continue' |
---|
| 1764 | builtin correctly. |
---|
| 1765 | |
---|
| 1766 | g. Autoconf tests added for cygwin32 and mingw32. |
---|
| 1767 | |
---|
| 1768 | 2. New Features in Bash |
---|
| 1769 | |
---|
| 1770 | a. The `--with-bash-malloc' configure option replaces `--with-gnu-malloc' |
---|
| 1771 | (which is still there for backwards compatibility). |
---|
| 1772 | |
---|
| 1773 | ------------------------------------------------------------------------------ |
---|
| 1774 | This document details the changes between this version, bash-2.04-beta1, |
---|
| 1775 | and the previous version, bash-2.04-alpha1. |
---|
| 1776 | |
---|
| 1777 | 1. Changes to Bash |
---|
| 1778 | |
---|
| 1779 | a. Fixed a bug in the programmable completion code that occurred when |
---|
| 1780 | trying to complete command lines containing a `;' or `@'. |
---|
| 1781 | |
---|
| 1782 | b. The file descriptor from which the shell is reading a script is now |
---|
| 1783 | moved to a file descriptor above the user-addressible range. |
---|
| 1784 | |
---|
| 1785 | c. Changes to `printf' so that it can handle integers beginning with 0 |
---|
| 1786 | or 0x as octal and hex, respectively. |
---|
| 1787 | |
---|
| 1788 | d. Fixes to the programmable completion code so it handles nonsense like |
---|
| 1789 | `compgen -C xyz' gracefully. |
---|
| 1790 | |
---|
| 1791 | e. The shell no longer modifies the signal handler for SIGPROF, allowing |
---|
| 1792 | profiling again on certain systems. |
---|
| 1793 | |
---|
| 1794 | f. The shell checks for a new window size, if the user has requested it, |
---|
| 1795 | after a process exits due to a signal. |
---|
| 1796 | |
---|
| 1797 | g. Fixed a bug with variables with null values in a program's temporary |
---|
| 1798 | environment and the bash getenv() replacement. |
---|
| 1799 | |
---|
| 1800 | h. `declare' and the other builtins that take variable assignments as |
---|
| 1801 | arguments now honor `set -a' and mark modified variables for export. |
---|
| 1802 | |
---|
| 1803 | i. Some changes were made for --dump-po-strings mode when writing strings |
---|
| 1804 | with embedded newlines. |
---|
| 1805 | |
---|
| 1806 | j. The code that caches export strings from the initial environment now |
---|
| 1807 | duplicates the string rather than just pointing into the environment. |
---|
| 1808 | |
---|
| 1809 | k. The filename completion quoting code now uses single quotes by default |
---|
| 1810 | if the filename being completed contains newlines, since \<newline> |
---|
| 1811 | has a special meaning to the parser. |
---|
| 1812 | |
---|
| 1813 | l. Bash now uses typedefs bits32_t and u_bits32_t instead of int32_t and |
---|
| 1814 | u_int32_t, respectively to avoid conflicts on certain Unix versions. |
---|
| 1815 | |
---|
| 1816 | m. Configuration changes were made for: Rhapsody, Mac OS, FreeBSD-3.x. |
---|
| 1817 | |
---|
| 1818 | n. Fixed a problem with hostname-to-ip-address translation in the |
---|
| 1819 | /dev/(tcp|udp)/hostname/port redirection code. |
---|
| 1820 | |
---|
| 1821 | o. The texinfo manual has been reorganized slightly. |
---|
| 1822 | |
---|
| 1823 | p. Filename generation (globbing) range comparisons in bracket expressions |
---|
| 1824 | no longer use strcoll(3) even if it is available, since it has unwanted |
---|
| 1825 | effects in certain locales. |
---|
| 1826 | |
---|
| 1827 | q. Fixed a cosmetic problem in the source that caused the shell to not |
---|
| 1828 | compile if DPAREN_ARITHMETIC was not defined but ARITH_FOR_COMMAND was. |
---|
| 1829 | |
---|
| 1830 | r. Fixed a bug in the here-document code tripped when the file descriptor |
---|
| 1831 | opened to the file containing the text of the here document was the |
---|
| 1832 | same as a redirector specified by the user. |
---|
| 1833 | |
---|
| 1834 | s. Fixed a bug where the INVERT_RETURN flag was not being set for `pipeline' |
---|
| 1835 | in `time ! pipeline'. |
---|
| 1836 | |
---|
| 1837 | t. Fixed a bug with the `wait' builtin which manifested itself when an |
---|
| 1838 | interrupt was received while the shell was waiting for asynchronous |
---|
| 1839 | processes in a shell script. |
---|
| 1840 | |
---|
| 1841 | u. Fixed the DEBUG trap code so that it has the correct value of $?. |
---|
| 1842 | |
---|
| 1843 | v. Fixed a bug in the parameter pattern substitution code that could cause |
---|
| 1844 | the shell to attempt to free unallocated memory if the pattern started |
---|
| 1845 | with `/' and an expansion error occurs. |
---|
| 1846 | |
---|
| 1847 | w. Fixed a bug in the positional parameter substring code that could |
---|
| 1848 | cause the shell to loop freeing freed memory. |
---|
| 1849 | |
---|
| 1850 | x. Fixed a bug in the positional parameter pattern substitution code so |
---|
| 1851 | that it correctly handles null replacement strings with a pattern |
---|
| 1852 | string prefixed with `%' or `#'. |
---|
| 1853 | |
---|
| 1854 | y. The shell no longer attempts to import functions from the environment if |
---|
| 1855 | started with `-n'. |
---|
| 1856 | |
---|
| 1857 | z. Fixed a bug that caused `return' in a command substitution executed in |
---|
| 1858 | a shell function to return from the function in a subshell and continue |
---|
| 1859 | execution. |
---|
| 1860 | |
---|
| 1861 | aa. `hash -p /pathname/with/slashes name' is no longer allowed when the shell |
---|
| 1862 | is restricted. |
---|
| 1863 | |
---|
| 1864 | bb. The wait* job control functions now behave better if called when there |
---|
| 1865 | are no unwaited-for children. |
---|
| 1866 | |
---|
| 1867 | cc. Command substitution no longer unconditionally disables job control in |
---|
| 1868 | the subshell started to run the command. |
---|
| 1869 | |
---|
| 1870 | dd. A bug was fixed that occasionally caused traps to mess up the parser |
---|
| 1871 | state. |
---|
| 1872 | |
---|
| 1873 | ee. `bashbug' now honors user headers in the mail message it sends. |
---|
| 1874 | |
---|
| 1875 | ff. A bug was fixed that caused the `:p' history modifier to not print the |
---|
| 1876 | history expansion if the `histverify' option was set. |
---|
| 1877 | |
---|
| 1878 | 2. Changes to Readline |
---|
| 1879 | |
---|
| 1880 | a. Fixed a bug in the redisplay code for lines with more than 256 line |
---|
| 1881 | breaks. |
---|
| 1882 | |
---|
| 1883 | b. A bug was fixed which caused invisible character markers to not be |
---|
| 1884 | stripped from the prompt string if the terminal was in no-echo mode. |
---|
| 1885 | |
---|
| 1886 | c. Readline no longer tries to get the variables it needs for redisplay |
---|
| 1887 | from the termcap entry if the calling application has specified its |
---|
| 1888 | own redisplay function. Readline treats the terminal as `dumb' in |
---|
| 1889 | this case. |
---|
| 1890 | |
---|
| 1891 | d. Fixes to the SIGWINCH code so that a multiple-line prompt with escape |
---|
| 1892 | sequences is redrawn correctly. |
---|
| 1893 | |
---|
| 1894 | 3. New Features in Bash |
---|
| 1895 | |
---|
| 1896 | a. `bashbug' now accepts `--help' and `--version' options. |
---|
| 1897 | |
---|
| 1898 | b. There is a new `xpg_echo' option to `shopt' that controls the behavior |
---|
| 1899 | of echo with respect to backslash-escaped characters at runtime. |
---|
| 1900 | |
---|
| 1901 | ------------------------------------------------------------------------------ |
---|
| 1902 | This document details the changes between this version, bash-2.04-alpha1, |
---|
| 1903 | and the previous version, bash-2.04-devel. |
---|
| 1904 | |
---|
| 1905 | 1. Changes to Bash |
---|
| 1906 | |
---|
| 1907 | a. Fixed a bug that could cause core dumps when performing substring |
---|
| 1908 | expansion. |
---|
| 1909 | |
---|
| 1910 | b. Shared object configuration changes for: Solaris, OSF/1 |
---|
| 1911 | |
---|
| 1912 | c. The POSIX_GLOB_LIBRARY code that uses the POSIX.2 globbing facilities |
---|
| 1913 | for pathname expansion now understands GLOBIGNORE. |
---|
| 1914 | |
---|
| 1915 | d. The code that implements `eval' was changed to save the value of the |
---|
| 1916 | current prompt, so an eval in a shell function called by the programmable |
---|
| 1917 | completion code will not change the prompt to $PS2. |
---|
| 1918 | |
---|
| 1919 | e. Restored the undocumented NON_INTERACTIVE_LOGIN_SHELLS #define to |
---|
| 1920 | config-top.h. If this is defined, all login shells will read the |
---|
| 1921 | startup files, not just interactive and non-interactive started with |
---|
| 1922 | the `--login' option. |
---|
| 1923 | |
---|
| 1924 | f. Fixed a bug that caused the expansion code to occasionally dump core if |
---|
| 1925 | IFS contained characters > 128. |
---|
| 1926 | |
---|
| 1927 | g. Fixed a problem with the grammar so that a newline is not required |
---|
| 1928 | after the `))' in the new-style arithmetic for statement; a semicolon |
---|
| 1929 | may be used as expected. |
---|
| 1930 | |
---|
| 1931 | h. Variable indirection may now reference the shell's special variables. |
---|
| 1932 | |
---|
| 1933 | i. The $'...' and $"..." constructs are now added to the history correctly |
---|
| 1934 | if they contain newlines and command-oriented history is enabled. |
---|
| 1935 | |
---|
| 1936 | j. It is now an error to try to assign a value to a function-local copy |
---|
| 1937 | of a readonly shell variable (declared with the `local' builtin). |
---|
| 1938 | |
---|
| 1939 | 2. Changes to Readline |
---|
| 1940 | |
---|
| 1941 | a. The history file code now uses O_BINARY mode when reading and writing |
---|
| 1942 | the history file on cygwin32. |
---|
| 1943 | |
---|
| 1944 | 3. New Features in Bash |
---|
| 1945 | |
---|
| 1946 | a. A new programmable completion facility, with two new builtin commands: |
---|
| 1947 | complete and compgen. |
---|
| 1948 | |
---|
| 1949 | b. configure has a new option, `--enable-progcomp', to compile in the |
---|
| 1950 | programmable completion features (enabled by default). |
---|
| 1951 | |
---|
| 1952 | c. `shopt' has a new option, `progcomp', to enable and disable programmable |
---|
| 1953 | completion at runtime. |
---|
| 1954 | |
---|
| 1955 | d. Unsetting HOSTFILE now clears the list of hostnames used for completion. |
---|
| 1956 | |
---|
| 1957 | 4. New Features in Readline |
---|
| 1958 | |
---|
| 1959 | a. A new variable, rl_gnu_readline_p, always 1. The intent is that an |
---|
| 1960 | application can verify whether or not it is linked with the `real' |
---|
| 1961 | readline library or some substitute. |
---|
| 1962 | |
---|
| 1963 | ------------------------------------------------------------------------------ |
---|
| 1964 | This document details the changes between this version, bash-2.04-devel, |
---|
| 1965 | and the previous version, bash-2.03-release. |
---|
| 1966 | |
---|
| 1967 | 1. Changes to Bash |
---|
| 1968 | |
---|
| 1969 | a. System-specific configuration and source changes for: Interix, Rhapsody |
---|
| 1970 | |
---|
| 1971 | b. Fixed a bug in execute_cmd.c that resulted in a compile-time error if |
---|
| 1972 | JOB_CONTROL was not defined. |
---|
| 1973 | |
---|
| 1974 | c. An obscure race condition in the trap code was fixed. |
---|
| 1975 | |
---|
| 1976 | d. The string resulting from $'...' is now requoted to avoid any further |
---|
| 1977 | expansion. |
---|
| 1978 | |
---|
| 1979 | e. The $'...' quoting syntax now allows backslash to escape a single quote, |
---|
| 1980 | for ksh-93 compatibility. |
---|
| 1981 | |
---|
| 1982 | f. The $"..." quoting syntax now escapes backslashes and double quotes in |
---|
| 1983 | the translated string when displaying them with the --dump-po-strings |
---|
| 1984 | option. |
---|
| 1985 | |
---|
| 1986 | g. `echo -e' no longer converts \' to '. |
---|
| 1987 | |
---|
| 1988 | h. Fixes were made to the extended globbing code to handle embedded (...) |
---|
| 1989 | patterns better. |
---|
| 1990 | |
---|
| 1991 | i. Some improvements were made to the code that unsets `nodelay' mode on |
---|
| 1992 | the file descriptor from which bash is reading input. |
---|
| 1993 | |
---|
| 1994 | j. Some changes were made to the replacement termcap library for better |
---|
| 1995 | operation on MS-DOS. |
---|
| 1996 | |
---|
| 1997 | k. Some changes were made to the tilde expansion code to handle backslash |
---|
| 1998 | as a pathname separator on MS-DOS. |
---|
| 1999 | |
---|
| 2000 | l. The source has been reorganized a little bit -- there is now an `include' |
---|
| 2001 | subdirectory, and lib/posixheaders has been removed. |
---|
| 2002 | |
---|
| 2003 | m. Improvements were made to the `read' builtin so that it makes many |
---|
| 2004 | fewer read(2) system calls. |
---|
| 2005 | |
---|
| 2006 | n. The expansion of $- will include `c' and `s' when those options are |
---|
| 2007 | supplied at shell invocation. |
---|
| 2008 | |
---|
| 2009 | o. Several improvments were made to the completion code: variable completion |
---|
| 2010 | now works better when there are unterminated expansions, command |
---|
| 2011 | completion understands quotes better, and completion now works in certain |
---|
| 2012 | unclosed $(... constructs. |
---|
| 2013 | |
---|
| 2014 | p. The arithmetic expansion code was fixed to not need the value of a |
---|
| 2015 | variable being assigned a value (fixes the "ss=09; let ss=10" bug). |
---|
| 2016 | |
---|
| 2017 | q. Some changes were made to make exported environment creation faster. |
---|
| 2018 | |
---|
| 2019 | r. The html documentation will be installed into $(htmldir) if that variable |
---|
| 2020 | has a value when `make install' is run. |
---|
| 2021 | |
---|
| 2022 | s. Fixed a bug that would cause the bashrc file to be sourced inappropriately |
---|
| 2023 | when bash is started by sshd. |
---|
| 2024 | |
---|
| 2025 | t. The SSH_CLIENT environment variable is no longer auto-exported. |
---|
| 2026 | |
---|
| 2027 | u. A bug that caused redirections with (...) subshells to be performed in |
---|
| 2028 | the wrong order was fixed. |
---|
| 2029 | |
---|
| 2030 | v. A bug that occasionally caused inappropriate expansion of assignment |
---|
| 2031 | statements in compound array assignments was fixed. |
---|
| 2032 | |
---|
| 2033 | w. The code that parses the words in a compound array assignment was |
---|
| 2034 | simplified considerably and should work better now. |
---|
| 2035 | |
---|
| 2036 | x. Fixes to the non-job-control code in nojobs.c to make it POSIX.2-compliant |
---|
| 2037 | when a user attempts to retrieve the status of a terminated background |
---|
| 2038 | process. |
---|
| 2039 | |
---|
| 2040 | y. Fixes to the `printf' builtin so that it doesn't try to expand all |
---|
| 2041 | backslash escape sequences in the format string before parsing it for |
---|
| 2042 | % format specifiers. |
---|
| 2043 | |
---|
| 2044 | 2. Changes to Readline |
---|
| 2045 | |
---|
| 2046 | a. The history library tries to truncate the history file only if it is a |
---|
| 2047 | regular file. |
---|
| 2048 | |
---|
| 2049 | b. A bug that caused _rl_dispatch to address negative array indices on |
---|
| 2050 | systems with signed chars was fixed. |
---|
| 2051 | |
---|
| 2052 | c. rl-yank-nth-arg now leaves the history position the same as when it was |
---|
| 2053 | called. |
---|
| 2054 | |
---|
| 2055 | d. Changes to the completion code to handle MS-DOS drive-letter:pathname |
---|
| 2056 | filenames. |
---|
| 2057 | |
---|
| 2058 | e. Completion is now case-insensitive by default on MS-DOS. |
---|
| 2059 | |
---|
| 2060 | f. Fixes to the history file manipulation code for MS-DOS. |
---|
| 2061 | |
---|
| 2062 | g. Readline attempts to bind the arrow keys to appropriate defaults on MS-DOS. |
---|
| 2063 | |
---|
| 2064 | h. Some fixes were made to the redisplay code for better operation on MS-DOS. |
---|
| 2065 | |
---|
| 2066 | i. The quoted-insert code will now insert tty special chars like ^C. |
---|
| 2067 | |
---|
| 2068 | j. A bug was fixed that caused the display code to reference memory before |
---|
| 2069 | the start of the prompt string. |
---|
| 2070 | |
---|
| 2071 | k. More support for __EMX__ (OS/2). |
---|
| 2072 | |
---|
| 2073 | l. A bug was fixed in readline's signal handling that could cause infinite |
---|
| 2074 | recursion in signal handlers. |
---|
| 2075 | |
---|
| 2076 | m. A bug was fixed that caused the point to be less than zero when rl_forward |
---|
| 2077 | was given a very large numeric argument. |
---|
| 2078 | |
---|
| 2079 | n. The vi-mode code now gets characters via the application-settable value |
---|
| 2080 | of rl_getc_function rather than calling rl_getc directly. |
---|
| 2081 | |
---|
| 2082 | 3. New Features in Bash |
---|
| 2083 | |
---|
| 2084 | a. The history builtin has a `-d offset' option to delete the history entry |
---|
| 2085 | at position `offset'. |
---|
| 2086 | |
---|
| 2087 | b. The prompt expansion code has two new escape sequences: \j, the number of |
---|
| 2088 | active jobs; and \l, the basename of the shell's tty device name. |
---|
| 2089 | |
---|
| 2090 | c. The `bind' builtin has a new `-x' option to bind key sequences to shell |
---|
| 2091 | commands. |
---|
| 2092 | |
---|
| 2093 | d. There is a new shell option, no_empty_command_completion, which, when |
---|
| 2094 | enabled, disables command completion when TAB is typed on an empty line. |
---|
| 2095 | |
---|
| 2096 | e. The `help' builtin has a `-s' option to just print a builtin's usage |
---|
| 2097 | synopsys. |
---|
| 2098 | |
---|
| 2099 | f. There are several new arithmetic operators: id++, id-- (variable |
---|
| 2100 | post-increment/decrement), ++id, --id (variabl pre-increment/decrement), |
---|
| 2101 | expr1 , expr2 (comma operator). |
---|
| 2102 | |
---|
| 2103 | g. There is a new ksh-93 style arithmetic for command: |
---|
| 2104 | for ((expr1 ; expr2; expr3 )); do list; done |
---|
| 2105 | |
---|
| 2106 | h. The `read' builtin has a number of new options: |
---|
| 2107 | -t timeout only wait timeout seconds for input |
---|
| 2108 | -n nchars only read nchars from input instead of a full line |
---|
| 2109 | -d delim read until delim rather than newline |
---|
| 2110 | -s don't echo input chars as they are read |
---|
| 2111 | |
---|
| 2112 | i. The redirection code now handles several filenames specially: |
---|
| 2113 | /dev/fd/N, /dev/stdin, /dev/stdout, and /dev/stderr, whether or |
---|
| 2114 | not they are present in the file system. |
---|
| 2115 | |
---|
| 2116 | j. The redirection code now recognizes pathnames of the form |
---|
| 2117 | /dev/tcp/host/port and /dev/udp/host/port, and tries to open a socket |
---|
| 2118 | of the appropriate type to the specified port on the specified host. |
---|
| 2119 | |
---|
| 2120 | k. The ksh-93 ${!prefix*} expansion, which expands to the names of all |
---|
| 2121 | shell variables whose names start with prefix, has been implemented. |
---|
| 2122 | |
---|
| 2123 | l. There is a new dynamic variable, FUNCNAME, which expands to the name of |
---|
| 2124 | a currently-executing function. Assignments to FUNCNAME have no effect. |
---|
| 2125 | |
---|
| 2126 | m. The GROUPS variable is no longer readonly; assignments to it are silently |
---|
| 2127 | discarded. This means it can be unset. |
---|
| 2128 | |
---|
| 2129 | 4. New Features in Readline |
---|
| 2130 | |
---|
| 2131 | a. Parentheses matching is now always compiled into readline, and enabled |
---|
| 2132 | or disabled when the value of the `blink-matching-paren' variable is |
---|
| 2133 | changed. |
---|
| 2134 | |
---|
| 2135 | b. MS-DOS systems now use ~/_inputrc as the last-ditch inputrc filename. |
---|
| 2136 | |
---|
| 2137 | c. MS-DOS systems now use ~/_history as the default history file. |
---|
| 2138 | |
---|
| 2139 | d. history-search-{forward,backward} now leave the point at the end of the |
---|
| 2140 | line when the string to search for is empty, like |
---|
| 2141 | {reverse,forward}-search-history. |
---|
| 2142 | |
---|
| 2143 | e. history-search-{forward,backward} now leave the last history line found |
---|
| 2144 | in the readline buffer if the second or subsequent search fails. |
---|
| 2145 | |
---|
| 2146 | f. New function for use by applications: rl_on_new_line_with_prompt, used |
---|
| 2147 | when an application displays the prompt itself before calling readline(). |
---|
| 2148 | |
---|
| 2149 | g. New variable for use by applications: rl_already_prompted. An application |
---|
| 2150 | that displays the prompt itself before calling readline() must set this to |
---|
| 2151 | a non-zero value. |
---|
| 2152 | |
---|
| 2153 | ------------------------------------------------------------------------------ |
---|
[12958] | 2154 | This document details the changes between this version, bash-2.03-release, |
---|
| 2155 | and the previous version, bash-2.03-beta2. |
---|
| 2156 | |
---|
| 2157 | 1. Changes to Bash |
---|
| 2158 | |
---|
| 2159 | a. A file descriptor leak in the `fc' builtin was fixed. |
---|
| 2160 | |
---|
| 2161 | b. A bug was fixed in the `read' builtin that caused occasional spurious |
---|
| 2162 | failures when using `read -e'. |
---|
| 2163 | |
---|
| 2164 | c. The version code needed to use the value of the cpp variable |
---|
| 2165 | CONF_MACHTYPE rather than MACHTYPE. |
---|
| 2166 | |
---|
| 2167 | d. A new test was added to exercise the command printing and copying code. |
---|
| 2168 | |
---|
| 2169 | e. A bug was fixed that caused `time' to be recognized as a reserved word |
---|
| 2170 | if it was the first pattern in a `case' statement pattern list. |
---|
| 2171 | |
---|
| 2172 | ------------------------------------------------------------------------------ |
---|
| 2173 | This document details the changes between this version, bash-2.03-beta2, |
---|
| 2174 | and the previous version, bash-2.03-beta1. |
---|
| 2175 | |
---|
| 2176 | 1. Changes to Bash |
---|
| 2177 | |
---|
| 2178 | a. Slight additions to support/shobj-conf, mostly for the benefit of AIX 4.2. |
---|
| 2179 | |
---|
| 2180 | b. config.{guess,sub} support added for the NEC SX4. |
---|
| 2181 | |
---|
| 2182 | c. Changed some of the cross-compiling sections of the configure macros in |
---|
| 2183 | aclocal.m4 so that configure won't abort. |
---|
| 2184 | |
---|
| 2185 | d. Slight changes to how the HTML versions of the bash and readline manuals |
---|
| 2186 | are generated. |
---|
| 2187 | |
---|
| 2188 | e. Fixed conditional command printing to avoid interpreting printf `%'-escapes |
---|
| 2189 | in arguments to [[. |
---|
| 2190 | |
---|
| 2191 | f. Don't include the bash malloc on all variants of the alpha processor. |
---|
| 2192 | |
---|
| 2193 | g. Changes to configure to make --enable-profiling work on Solaris 2.x. |
---|
| 2194 | |
---|
| 2195 | h. Fixed a bug that manifested itself when shell functions were called |
---|
| 2196 | between calls to `getopts'. |
---|
| 2197 | |
---|
| 2198 | i. Fixed pattern substitution so that a bare `#'as a pattern causes the |
---|
| 2199 | replacement string to be prefixed to the search string, and a bare |
---|
| 2200 | `%' causes the replacement string to be appended to the search string. |
---|
| 2201 | |
---|
| 2202 | j. Fixed a bug in the command execution code that caused child processes |
---|
| 2203 | to occasionally have the wrong value for $!. |
---|
| 2204 | |
---|
| 2205 | 2. Changes to Readline |
---|
| 2206 | |
---|
| 2207 | a. Added code to the history library to catch history substitutions using |
---|
| 2208 | `&' without a previous history substitution or search having been |
---|
| 2209 | performed. |
---|
| 2210 | |
---|
| 2211 | 3. New Features in Bash |
---|
| 2212 | |
---|
| 2213 | 4. New Features in Readline |
---|
| 2214 | |
---|
| 2215 | a. New bindable variable: `isearch-terminators'. |
---|
| 2216 | |
---|
| 2217 | b. New bindable function: `forward-backward-delete-char' (unbound by default). |
---|
| 2218 | |
---|
| 2219 | ------------------------------------------------------------------------------ |
---|
| 2220 | This document details the changes between this version, bash-2.03-beta1, |
---|
| 2221 | and the previous version, bash-2.03-alpha. |
---|
| 2222 | |
---|
| 2223 | 1. Changes to Bash |
---|
| 2224 | |
---|
| 2225 | a. A change was made to the help text for `{...}' to make it clear that a |
---|
| 2226 | semicolon is required before the closing brace. |
---|
| 2227 | |
---|
| 2228 | b. A fix was made to the `test' builtin so that syntax errors cause test |
---|
| 2229 | to return an exit status > 1. |
---|
| 2230 | |
---|
| 2231 | c. Globbing is no longer performed on assignment statements that appear as |
---|
| 2232 | arguments to `assignment builtins' such as `export'. |
---|
| 2233 | |
---|
| 2234 | d. System-specific configuration changes were made for: Rhapsody, |
---|
| 2235 | AIX 4.2/gcc, BSD/OS 4.0. |
---|
| 2236 | |
---|
| 2237 | e. New loadable builtins: ln, unlink. |
---|
| 2238 | |
---|
| 2239 | f. Some fixes were made to the globbing code to handle extended glob patterns |
---|
| 2240 | which immediately follow a `*'. |
---|
| 2241 | |
---|
| 2242 | g. A fix was made to the command printing code to ensure that redirections |
---|
| 2243 | following compound commands have a space separating them from the rest |
---|
| 2244 | of the command. |
---|
| 2245 | |
---|
| 2246 | h. The pathname canonicalization code was changed to produce fewer leading |
---|
| 2247 | `//' sequences, since those are interpreted as network file system |
---|
| 2248 | pathnames on some systems. |
---|
| 2249 | |
---|
| 2250 | i. A fix was made so that loops containing `eval' commands in commands passed |
---|
| 2251 | to `bash -c' would not exit prematurely. |
---|
| 2252 | |
---|
| 2253 | j. Some changes were made to the job reaping code when the shell is not |
---|
| 2254 | interactive, so the shell will retain exit statuses longer for examination |
---|
| 2255 | by `wait'. |
---|
| 2256 | |
---|
| 2257 | k. A fix was made so that `jobs | command' works again. |
---|
| 2258 | |
---|
| 2259 | l. The erroneous compound array assignment var=((...)) is now a syntax error. |
---|
| 2260 | |
---|
| 2261 | m. A change was made to the dynamic loading code in `enable' to support |
---|
| 2262 | Tenon's MachTen. |
---|
| 2263 | |
---|
| 2264 | n. A fix was made to the globbing code so that extended globbing patterns |
---|
| 2265 | will correctly match `.' in a bracket expression. |
---|
| 2266 | |
---|
| 2267 | 2. Changes to Readline |
---|
| 2268 | |
---|
| 2269 | a. A fix was made to the completion code in which a typo caused the wrong |
---|
| 2270 | value to be passed to the function that computed the longest common |
---|
| 2271 | prefix of the list of matches. |
---|
| 2272 | |
---|
| 2273 | b. The completion code now checks the value of rl_filename_completion_desired, |
---|
| 2274 | which is set by application-supplied completion functions to indicate |
---|
| 2275 | that filename completion is being performed, to decide whether or not to |
---|
| 2276 | call an application-supplied `ignore completions' function. |
---|
| 2277 | |
---|
| 2278 | 3. New Features in Bash |
---|
| 2279 | |
---|
| 2280 | a. A change was made to the startup file code so that any shell begun with |
---|
| 2281 | the `--login' option, even non-interactive shells, will source the login |
---|
| 2282 | shell startup files. |
---|
| 2283 | |
---|
| 2284 | 4. New Features in Readline |
---|
| 2285 | |
---|
| 2286 | a. A new variable, rl_erase_empty_line, which, if set by an application using |
---|
| 2287 | readline, will cause readline to erase, prompt and all, lines on which the |
---|
| 2288 | only thing typed was a newline. |
---|
| 2289 | |
---|
| 2290 | ------------------------------------------------------------------------------ |
---|
| 2291 | This document details the changes between this version, bash-2.03-alpha, |
---|
| 2292 | and the previous version, bash-2.02.1-release. |
---|
| 2293 | |
---|
| 2294 | 1. Changes to Bash |
---|
| 2295 | |
---|
| 2296 | a. System-specific configuration changes were made for: Irix 6.x, Unixware 7. |
---|
| 2297 | |
---|
| 2298 | b. The texi2dvi and texi2html scripts were updated to the latest versions |
---|
| 2299 | from the net. |
---|
| 2300 | |
---|
| 2301 | c. The configure tests that determine which native type is 32 bits were |
---|
| 2302 | changed to not require a compiled program. |
---|
| 2303 | |
---|
| 2304 | d. Fixed a bug in shell_execve that could cause memory to be freed twice |
---|
| 2305 | after a failed exec. |
---|
| 2306 | |
---|
| 2307 | e. The `printf' test uses `diff -a' if it's available to prevent confusion |
---|
| 2308 | due to the non-ascii output. |
---|
| 2309 | |
---|
| 2310 | f. Shared object configuration is now performed by a shell script, |
---|
| 2311 | support/shobj-conf, which generates values to be substituted into |
---|
| 2312 | makefiles by configure. |
---|
| 2313 | |
---|
| 2314 | g. Some changes were made to `ulimit' to avoid the use of RLIM_INVALID as a |
---|
| 2315 | return value. |
---|
| 2316 | |
---|
| 2317 | h. Changes were made to `ulimit' to work around HPUX 9.x's peculiar |
---|
| 2318 | handling of RLIMIT_FILESIZE. |
---|
| 2319 | |
---|
| 2320 | i. Some new loadable builtins were added: id, printenv, sync, whoami, push, |
---|
| 2321 | mkdir. `pushd', `popd', and `dirs' can now be built as regular or |
---|
| 2322 | loadable builtins from the same source file. |
---|
| 2323 | |
---|
| 2324 | j. Changes were made to `printf' to handle NUL bytes in the expanded format |
---|
| 2325 | string. |
---|
| 2326 | |
---|
| 2327 | k. The various `make clean' Makefile targets now descend into lib/sh. |
---|
| 2328 | |
---|
| 2329 | l. The `type' builtin was changed to use the internal `getopt' so that things |
---|
| 2330 | like `type -ap' work as expected. |
---|
| 2331 | |
---|
| 2332 | m. There is a new configuration option, --with-installed-readline, to link |
---|
| 2333 | bash with a locally-installed version of readline. Only readline version |
---|
| 2334 | 4.0 and later releases can support this. Shared and static libraries |
---|
| 2335 | are supported. The installed include files are used. |
---|
| 2336 | |
---|
| 2337 | n. There is a new autoconf macro used to find which basic type is 64 bits. |
---|
| 2338 | |
---|
| 2339 | o. Dynamic linking and loadable builtins should now work on SCO 3.2v5*, |
---|
| 2340 | AIX 4.2 with gcc, Unixware 7, and many other systems using gcc, where |
---|
| 2341 | the `-shared' options works correctly. |
---|
| 2342 | |
---|
| 2343 | p. A bug was fixed in the bash filename completion code that caused memory to |
---|
| 2344 | be freed twice if a directory name containing an unset variable was |
---|
| 2345 | completed and the -u option was set. |
---|
| 2346 | |
---|
| 2347 | q. The prompt expansion code now quotes the `$' in the `\$' expansion so it |
---|
| 2348 | is not processed by subsequent parameter expansion. |
---|
| 2349 | |
---|
| 2350 | r. Fixed a parsing bug that caused a single or double quote after a `$$' to |
---|
| 2351 | trigger ANSI C expansion or locale translation. |
---|
| 2352 | |
---|
| 2353 | s. Fixed a bug in the globbing code that caused quoted filenames containing |
---|
| 2354 | no globbing characters to sometimes be incorrectly expanded. |
---|
| 2355 | |
---|
| 2356 | t. Changes to the default prompt strings if prompt string decoding is not |
---|
| 2357 | compiled into the shell. |
---|
| 2358 | |
---|
| 2359 | u. Added `do', `then', `else', `{', and `(' to the list of keywords that may |
---|
| 2360 | precede the `time' reserved word. |
---|
| 2361 | |
---|
| 2362 | v. The shell may now be cross-built for BeOS as well as cygwin32. |
---|
| 2363 | |
---|
| 2364 | w. The conditional command execution code now treats `=' the same as `==' |
---|
| 2365 | for deciding when to perform pattern matching. |
---|
| 2366 | |
---|
| 2367 | x. The `-e' option no longer causes the shell to exit if a command exits |
---|
| 2368 | with a non-zero status while running the startup files. |
---|
| 2369 | |
---|
| 2370 | y. The `printf' builtin no longer dumps core if a modifier is supplied in |
---|
| 2371 | the format string without a conversion character (e.g. `%h'). |
---|
| 2372 | |
---|
| 2373 | z. Array assignments of the form a=(...) no longer show up in the history |
---|
| 2374 | list. |
---|
| 2375 | |
---|
| 2376 | aa. The parser was fixed to obey the POSIX.2 rules for finding the closing |
---|
| 2377 | `}' in a ${...} expression. |
---|
| 2378 | |
---|
| 2379 | bb. The history file is now opened with mode 0600 rather than 0666, so bash |
---|
| 2380 | no longer relies on the user's umask being set appropriately. |
---|
| 2381 | |
---|
| 2382 | cc. Setting LANG no longer causes LC_ALL to be assigned a value; bash now |
---|
| 2383 | relies on proper behavior from the C library. |
---|
| 2384 | |
---|
| 2385 | dd. Minor changes were made to allow quoted variable expansions using |
---|
| 2386 | ${...} to be completed correctly if there is no closing `"'. |
---|
| 2387 | |
---|
| 2388 | ee. Changes were made to builtins/Makefile.in so that configuring the shell |
---|
| 2389 | with `--enable-profiling' works right and builtins/mkbuiltins is |
---|
| 2390 | generated. |
---|
| 2391 | |
---|
| 2392 | 2. Changes to Readline |
---|
| 2393 | |
---|
| 2394 | a. The version number is now 4.0. |
---|
| 2395 | |
---|
| 2396 | b. There is no longer any #ifdef SHELL code in the source files. |
---|
| 2397 | |
---|
| 2398 | c. Some changes were made to the key binding code to fix memory leaks and |
---|
| 2399 | better support Win32 systems. |
---|
| 2400 | |
---|
| 2401 | d. Fixed a silly typo in the paren matching code -- it's microseconds, not |
---|
| 2402 | milliseconds. |
---|
| 2403 | |
---|
| 2404 | e. The readline library should be compilable by C++ compilers. |
---|
| 2405 | |
---|
| 2406 | f. The readline.h public header file now includes function prototypes for |
---|
| 2407 | all readline functions, and some changes were made to fix errors in the |
---|
| 2408 | source files uncovered by the use of prototypes. |
---|
| 2409 | |
---|
| 2410 | g. The maximum numeric argument is now clamped at 1000000. |
---|
| 2411 | |
---|
| 2412 | h. Fixes to rl_yank_last_arg to make it behave better. |
---|
| 2413 | |
---|
| 2414 | i. Fixed a bug in the display code that caused core dumps if the prompt |
---|
| 2415 | string length exceeded 1024 characters. |
---|
| 2416 | |
---|
| 2417 | j. The menu completion code was fixed to properly insert a single completion |
---|
| 2418 | if there is only one match. |
---|
| 2419 | |
---|
| 2420 | k. A bug was fixed that caused the display code to improperly display tabs |
---|
| 2421 | after newlines. |
---|
| 2422 | |
---|
| 2423 | 3. New Features in Bash |
---|
| 2424 | |
---|
| 2425 | a. New `shopt' option, `restricted_shell', indicating whether or not the |
---|
| 2426 | shell was started in restricted mode, for use in startup files. |
---|
| 2427 | |
---|
| 2428 | b. Filename generation is now performed on the words between ( and ) in |
---|
| 2429 | array assignments (which it probably should have done all along). |
---|
| 2430 | |
---|
| 2431 | c. OLDPWD is now auto-exported, as POSIX.2 seems to require. |
---|
| 2432 | |
---|
| 2433 | d. ENV and BASH_ENV are read-only variables in a restricted shell. |
---|
| 2434 | |
---|
| 2435 | 4. New Features in Readline |
---|
| 2436 | |
---|
| 2437 | a. Many changes to the signal handling: |
---|
| 2438 | o Readline now catches SIGQUIT and cleans up the tty before returning; |
---|
| 2439 | o A new variable, rl_catch_signals, is available to application writers |
---|
| 2440 | to indicate to readline whether or not it should install its own |
---|
| 2441 | signal handlers for SIGINT, SIGTERM, SIGQUIT, SIGALRM, SIGTSTP, |
---|
| 2442 | SIGTTIN, and SIGTTOU; |
---|
| 2443 | o A new variable, rl_catch_sigwinch, is available to application |
---|
| 2444 | writers to indicate to readline whether or not it should install its |
---|
| 2445 | own signal handler for SIGWINCH, which will chain to the calling |
---|
| 2446 | applications's SIGWINCH handler, if one is installed; |
---|
| 2447 | o There is a new function, rl_free_line_state, for application signal |
---|
| 2448 | handlers to call to free up the state associated with the current |
---|
| 2449 | line after receiving a signal; |
---|
| 2450 | o There is a new function, rl_cleanup_after_signal, to clean up the |
---|
| 2451 | display and terminal state after receiving a signal; |
---|
| 2452 | o There is a new function, rl_reset_after_signal, to reinitialize the |
---|
| 2453 | terminal and display state after an application signal handler |
---|
| 2454 | returns and readline continues |
---|
| 2455 | |
---|
| 2456 | b. There is a new function, rl_resize_terminal, to reset readline's idea of |
---|
| 2457 | the screen size after a SIGWINCH. |
---|
| 2458 | |
---|
| 2459 | c. New public functions: rl_save_prompt and rl_restore_prompt. These were |
---|
| 2460 | previously private functions with a `_' prefix. |
---|
| 2461 | |
---|
| 2462 | d. New function hook: rl_pre_input_hook, called just before readline starts |
---|
| 2463 | reading input, after initialization. |
---|
| 2464 | |
---|
| 2465 | e. New function hook: rl_display_matches_hook, called when readline would |
---|
| 2466 | display the list of completion matches. The new function |
---|
| 2467 | rl_display_match_list is what readline uses internally, and is available |
---|
| 2468 | for use by application functions called via this hook. |
---|
| 2469 | |
---|
| 2470 | f. New bindable function, delete-char-or-list, like tcsh. |
---|
| 2471 | |
---|
| 2472 | ------------------------------------------------------------------------------ |
---|
| 2473 | This document details the changes between this version, bash-2.02.1-release, |
---|
| 2474 | and the previous version, bash-2.02-release. |
---|
| 2475 | |
---|
| 2476 | 1. Changes to Bash |
---|
| 2477 | |
---|
| 2478 | a. A bug that caused the bash readline support to not compile unless aliases |
---|
| 2479 | and csh-style history were configured into the shell was fixed. |
---|
| 2480 | |
---|
| 2481 | b. Fixed a bug that could cause a core dump when here documents contained |
---|
| 2482 | more than 1000 characters. |
---|
| 2483 | |
---|
| 2484 | c. Fixed a bug that caused a CDPATH entry of "" to not be treated the same |
---|
| 2485 | as the current directory when in POSIX mode. |
---|
| 2486 | |
---|
| 2487 | d. Fixed an alignment problem with the memory returned by the bash malloc, |
---|
| 2488 | so returned memory is now 64-bit aligned. |
---|
| 2489 | |
---|
| 2490 | e. Fixed a bug that caused command substitutions executed within pipelines |
---|
| 2491 | to put the terminal in the wrong process group. |
---|
| 2492 | |
---|
| 2493 | f. Fixes to support/config.sub for: alphas, SCO Open Server and Open Desktop, |
---|
| 2494 | Unixware 2, and Unixware 7. |
---|
| 2495 | |
---|
| 2496 | g. Fixes to the pattern matching code to make it work correctly for eight-bit |
---|
| 2497 | characters. |
---|
| 2498 | |
---|
| 2499 | h. Fixed a problem that occasionally caused the shell to display the wrong |
---|
| 2500 | value for the new working directory when changing to a directory found |
---|
| 2501 | in $CDPATH when in physical mode. |
---|
| 2502 | |
---|
| 2503 | i. Fixed a bug that caused core dumps when using conditional commands in |
---|
| 2504 | shell functions. |
---|
| 2505 | |
---|
| 2506 | j. Fixed a bug that caused the printf builtin to loop forever if the format |
---|
| 2507 | string did not consume any of the arguments. |
---|
| 2508 | |
---|
| 2509 | k. Fixed a bug in the parameter expansion code that caused "$@" to be |
---|
| 2510 | incorrectly split if $IFS did not contain a space character. |
---|
| 2511 | |
---|
| 2512 | l. Fixed a bug that could cause a core dump when completing hostnames if |
---|
| 2513 | the number of matching hostnames was an exact multiple of 16. |
---|
| 2514 | |
---|
| 2515 | m. Fixed a bug that caused the shell to fork too early when a command |
---|
| 2516 | such as `%2 &' was given. |
---|
| 2517 | |
---|
| 2518 | 2. Changes to Readline |
---|
| 2519 | |
---|
| 2520 | a. Fixed a problem with redisplay that showed up when the prompt string was |
---|
| 2521 | longer than the screen width and the prompt contained invisible characters. |
---|
| 2522 | |
---|
| 2523 | ------------------------------------------------------------------------------ |
---|
| 2524 | This document details the changes between this version, bash-2.02-release, |
---|
| 2525 | and the previous version, bash-2.02-beta2. |
---|
| 2526 | |
---|
| 2527 | 1. Changes to Bash |
---|
| 2528 | |
---|
| 2529 | a. A bug was fixed that caused the terminal process group to be set |
---|
| 2530 | incorrectly when performing command substitution of builtins in a |
---|
| 2531 | pipeline. |
---|
| 2532 | |
---|
| 2533 | ------------------------------------------------------------------------------ |
---|
| 2534 | This document details the changes between this version, bash-2.02-beta2, |
---|
| 2535 | and the previous version, bash-2.02-beta1. |
---|
| 2536 | |
---|
| 2537 | 1. Changes to Bash |
---|
| 2538 | |
---|
| 2539 | a. Attempting to `wait' for stopped jobs now generates a warning message. |
---|
| 2540 | |
---|
| 2541 | b. Pipelines which exit due to SIGPIPE in non-interactive shells are now |
---|
| 2542 | not reported if the shell is compiled -DDONT_REPORT_SIGPIPE. |
---|
| 2543 | |
---|
| 2544 | c. Some changes were made to builtins/psize.sh and support/bashbug.sh to |
---|
| 2545 | attempt to avoid some /tmp file races and surreptitious file |
---|
| 2546 | substitutions. |
---|
| 2547 | |
---|
| 2548 | d. Fixed a bug that caused the shell not to compile if configured with |
---|
| 2549 | dparen arithmetic but without aliases. |
---|
| 2550 | |
---|
| 2551 | e. Fixed a bug that caused the input stream to be switched when assigning |
---|
| 2552 | empty arrays with `bash -c'. |
---|
| 2553 | |
---|
| 2554 | f. A bug was fixed in the readline expansion glue code that caused bash to |
---|
| 2555 | dump core when expanding lines with an unclosed single quote. |
---|
| 2556 | |
---|
| 2557 | g. A fix was made to the `cd' builtin so that using a non-empty directory |
---|
| 2558 | from $CDPATH results in an absolute pathname of the new current working |
---|
| 2559 | directory to be displayed after the current directory is changed. |
---|
| 2560 | |
---|
| 2561 | h. Fixed a bug in the variable assignment code that caused the shell to |
---|
| 2562 | dump core when referencing an unset variable with `set -u' enabled in |
---|
| 2563 | an assignment statement preceding a command. |
---|
| 2564 | |
---|
| 2565 | i. Fixed a bug in the exit trap code that caused reserved words to not be |
---|
| 2566 | recognized under certain circumstances. |
---|
| 2567 | |
---|
| 2568 | j. Fixed a bug in the parameter pattern substitution code so that quote |
---|
| 2569 | removal is performed. |
---|
| 2570 | |
---|
| 2571 | k. The shell should now configure correctly on Apple Rhapsody systems. |
---|
| 2572 | |
---|
| 2573 | l. The `kill' builtin now prints a usage message if it is not passed any |
---|
| 2574 | arguments. |
---|
| 2575 | |
---|
| 2576 | ------------------------------------------------------------------------------ |
---|
| 2577 | This document details the changes between this version, bash-2.02-beta1, |
---|
| 2578 | and the previous version, bash-2.02-alpha1. |
---|
| 2579 | |
---|
| 2580 | 1. Changes to Bash |
---|
| 2581 | |
---|
| 2582 | a. A few compilation bugs were fixed in the new extended globbing code. |
---|
| 2583 | |
---|
| 2584 | b. Executing arithmetic commands now sets the command name to `((' so |
---|
| 2585 | error messages look right. |
---|
| 2586 | |
---|
| 2587 | c. Fixed some build problems with various configuration options. |
---|
| 2588 | |
---|
| 2589 | d. The `printf' builtin now aborts immediately if an illegal format |
---|
| 2590 | character is encountered. |
---|
| 2591 | |
---|
| 2592 | e. The code that creates here-documents now behaves better if the file it's |
---|
| 2593 | trying to create already exists for some reason. |
---|
| 2594 | |
---|
| 2595 | f. Fixed a problem with the extended globbing code that made patterns like |
---|
| 2596 | `x+*' expand incorrectly. |
---|
| 2597 | |
---|
| 2598 | g. The prompt string expansion code no longer quotes tildes with backslashes. |
---|
| 2599 | |
---|
| 2600 | h. The bash getcwd() implementation in lib/sh/getcwd.c now behaves better in |
---|
| 2601 | the presence of lstat(2) failures. |
---|
| 2602 | |
---|
| 2603 | i. Fixed a bug with strsub() that caused core dumps when executing `fc -s'. |
---|
| 2604 | |
---|
| 2605 | j. The mail checking code now ensures that it has a valid default mailpath. |
---|
| 2606 | |
---|
| 2607 | k. A bug was fixed that caused local variables to be unset inappropriately |
---|
| 2608 | when sourcing a script from within another sourced script. |
---|
| 2609 | |
---|
| 2610 | l. A bug was fixed in the history saving code so that functions are saved |
---|
| 2611 | in the history list correctly if `cmdhist' is enabled, but `lithist' |
---|
| 2612 | is not. |
---|
| 2613 | |
---|
| 2614 | m. A bug was fixed that caused printf overflows when displaying error |
---|
| 2615 | messages. |
---|
| 2616 | |
---|
| 2617 | n. It should be easier to build the loadble builtins in examples/loadables, |
---|
| 2618 | though some manual editing of the generated Makefile is still required. |
---|
| 2619 | |
---|
| 2620 | o. The user's primary group is now always ${GROUPS[0]}. |
---|
| 2621 | |
---|
| 2622 | p. Some updates were made to support/config.guess from the GNU master copy. |
---|
| 2623 | |
---|
| 2624 | q. Some changes were made to the autoconf support for Solaris 2.6 large |
---|
| 2625 | files. |
---|
| 2626 | |
---|
| 2627 | r. The `command' builtins now does the right thing when confstr(3) cannot |
---|
| 2628 | find a value for _CS_PATH. |
---|
| 2629 | |
---|
| 2630 | s. Extended globbing expressions like `*.!(c)' are not history expanded if |
---|
| 2631 | `extglob' is enabled. |
---|
| 2632 | |
---|
| 2633 | t. Using the `-P' option to `cd' will force the value that is assigned to |
---|
| 2634 | PWD to not contain any symbolic links. |
---|
| 2635 | |
---|
| 2636 | 2. Changes to Readline |
---|
| 2637 | |
---|
| 2638 | a. The code that prints completion listings now behaves better if one or |
---|
| 2639 | more of the filenames contains non-printable characters. |
---|
| 2640 | |
---|
| 2641 | b. The time delay when showing matching parentheses is now 0.5 seconds. |
---|
| 2642 | |
---|
| 2643 | ------------------------------------------------------------------------------ |
---|
| 2644 | This document details the changes between this version, bash-2.02-alpha1, |
---|
| 2645 | and the previous version, bash-2.01.1-release. |
---|
| 2646 | |
---|
| 2647 | 1. Changes to Bash |
---|
| 2648 | |
---|
| 2649 | a. OS-specific configuration changes for: BSD/OS 3.x, Minix 2.x, |
---|
| 2650 | Solaris 2.6, SINIX SVR4. |
---|
| 2651 | |
---|
| 2652 | b. Changes were made to the generated `info' files so that `install-info' |
---|
| 2653 | works correctly. |
---|
| 2654 | |
---|
| 2655 | c. PWD is now auto-exported. |
---|
| 2656 | |
---|
| 2657 | d. A fix was made to the pipeline code to make sure that the shell forks |
---|
| 2658 | to execute simple commands consisting solely of assignment statements. |
---|
| 2659 | |
---|
| 2660 | e. Changes to the test suite for systems with 14-character filenames. |
---|
| 2661 | |
---|
| 2662 | f. The default sizes of some internal hash tables have been made smaller |
---|
| 2663 | to reduce the shell's memory footprint. |
---|
| 2664 | |
---|
| 2665 | g. The `((...))' arithmetic command is now executed directly instead of |
---|
| 2666 | being translated into `let "..."'. |
---|
| 2667 | |
---|
| 2668 | h. Fixes were made to the expansion code so that "$*", "$@", "${array[@]}", |
---|
| 2669 | and "${array[@]}" expand correctly when IFS does not contain a space |
---|
| 2670 | character, is unset, or is set to NULL. |
---|
| 2671 | |
---|
| 2672 | i. The indirect expansion code (${!var}) was changed so that the only |
---|
| 2673 | valid values of `var' are variable names, positional parameters, `#', |
---|
| 2674 | `@', and `*'. |
---|
| 2675 | |
---|
| 2676 | j. An arithmetic expression error in a $((...)) expansion now causes a |
---|
| 2677 | non-interactive shell running in posix mode to exit. |
---|
| 2678 | |
---|
| 2679 | k. Compound array assignment now splits the words within the parentheses |
---|
| 2680 | on shell metacharacters like the parser would before expansing them |
---|
| 2681 | and performing the assignment. This is for compatibility with ksh-93. |
---|
| 2682 | |
---|
| 2683 | l. The internal shell backslash-quoting code (used in the output of `set' |
---|
| 2684 | and completion) now quotes tildes if they appear at the start of the |
---|
| 2685 | string or after a `=' or `:'. |
---|
| 2686 | |
---|
| 2687 | m. A couple of bugs with `shopt -o' were fixed. |
---|
| 2688 | |
---|
| 2689 | n. `bash +o' now displays the same output as `set +o' before starting an |
---|
| 2690 | interactive shell. |
---|
| 2691 | |
---|
| 2692 | o. A bug that caused command substitution and the `eval' builtin to |
---|
| 2693 | occasionally free memory twice when an error was encountered was fixed. |
---|
| 2694 | |
---|
| 2695 | p. The filename globbing code no longer requires read permission for a |
---|
| 2696 | directory when the filename to be matched does not contain any globbing |
---|
| 2697 | characters, as POSIX.2 specifies. |
---|
| 2698 | |
---|
| 2699 | q. A bug was fixed so that the job containing the last asynchronous |
---|
| 2700 | process is not removed from the job table until a `wait' is executed |
---|
| 2701 | for that process or another asynchronous process is started. This |
---|
| 2702 | satisfies a POSIX.2 requirement. |
---|
| 2703 | |
---|
| 2704 | r. A `select' bug was fixed so that a non-numeric user response is treated |
---|
| 2705 | the same as a numeric response that is out of range. |
---|
| 2706 | |
---|
| 2707 | s. The shell no longer parses the value of SHELLOPTS from the environment |
---|
| 2708 | if it is restricted, running setuid, or running in `privileged mode'. |
---|
| 2709 | |
---|
| 2710 | t. Fixes were made to enable large file support on systems such as |
---|
| 2711 | Solaris 2.6, where the size of a file may be larger than can be held |
---|
| 2712 | in an `int'. |
---|
| 2713 | |
---|
| 2714 | u. The filename hashing code was fixed to not add `./' to the beginning of |
---|
| 2715 | filenames which already begin with `./'. |
---|
| 2716 | |
---|
| 2717 | v. The configure script was changed so that the GNU termcap library is not |
---|
| 2718 | compiled in if `prefer-curses' has been specified. |
---|
| 2719 | |
---|
| 2720 | w. HISTCONTROL and HISTIGNORE are no longer applied to the second and |
---|
| 2721 | subsequent lines of a multi-line command. |
---|
| 2722 | |
---|
| 2723 | x. A fix was made to `disown' so that it does a better job of catching |
---|
| 2724 | out-of-range jobs. |
---|
| 2725 | |
---|
| 2726 | y. Non-interactive shells no longer report the status of processes terminated |
---|
| 2727 | due to SIGINT, even if the standard output is a terminal. |
---|
| 2728 | |
---|
| 2729 | z. A bug that caused the output of `jobs' to have extra carriage returns |
---|
| 2730 | was fixed. |
---|
| 2731 | |
---|
| 2732 | aa. A bug that caused PIPESTATUS to not be set when builtins or shell |
---|
| 2733 | functions were executed in the foreground was fixed. |
---|
| 2734 | |
---|
| 2735 | bb. Bash now attempts to detect when it is being run by sshd, and treats |
---|
| 2736 | that case identically to being run by rshd. |
---|
| 2737 | |
---|
| 2738 | cc. A bug that caused `set -a' to export SHELLOPTS when one of the shell |
---|
| 2739 | options was changed was fixed. |
---|
| 2740 | |
---|
| 2741 | dd. The `kill' builtin now disallows empty or missing process id arguments |
---|
| 2742 | instead of treating them as identical to `0', which means the current |
---|
| 2743 | process. |
---|
| 2744 | |
---|
| 2745 | ee. `var=value declare -x var' now behaves identically to |
---|
| 2746 | `var=value export var'. Similarly for `var=value declare -r var' and |
---|
| 2747 | `var=value readonly var'. |
---|
| 2748 | |
---|
| 2749 | ff. A few memory leaks were fixed. |
---|
| 2750 | |
---|
| 2751 | gg. `alias' and `unalias' now print error messages when passed an argument |
---|
| 2752 | that is not an alias for printing or deletion, even when the shell is |
---|
| 2753 | not interactive, as POSIX.2 specifies. |
---|
| 2754 | |
---|
| 2755 | hh. `alias' and `alias -p' now return a status of 0 when no aliases are |
---|
| 2756 | defined, as POSIX.2 specifes. |
---|
| 2757 | |
---|
| 2758 | ii. `cd -' now prints the pathname of the new working directory if the shell |
---|
| 2759 | is interactive. |
---|
| 2760 | |
---|
| 2761 | jj. A fix was made so that the code that binds $PWD now copes with getcwd() |
---|
| 2762 | returning NULL. |
---|
| 2763 | |
---|
| 2764 | kk. `unset' now checks whether or not a function name it's trying to unset |
---|
| 2765 | is a valid shell identifier only when the shell is running in posix mode. |
---|
| 2766 | |
---|
| 2767 | ll. A change was made to the code that generates filenames for here documents |
---|
| 2768 | to make them less prone to name collisions. |
---|
| 2769 | |
---|
| 2770 | mm. The parser was changed so that `time' is recognized as a reserved word |
---|
| 2771 | only at the beginning of a pipeline. |
---|
| 2772 | |
---|
| 2773 | nn. The pathname canonicalization code was changed so that `//' is converted |
---|
| 2774 | into `/', but all other pathnames beginning with `//' are left alone, as |
---|
| 2775 | POSIX.2 specifies. |
---|
| 2776 | |
---|
| 2777 | oo. The `logout' builtin will no longer exit a non-interactive non-login |
---|
| 2778 | shell. |
---|
| 2779 | |
---|
| 2780 | 2. Changes to Readline |
---|
| 2781 | |
---|
| 2782 | a. Fixed a problem in the readline test program rltest.c that caused a core |
---|
| 2783 | dump. |
---|
| 2784 | |
---|
| 2785 | b. The code that handles parser directives in inputrc files now displays |
---|
| 2786 | more error messages. |
---|
| 2787 | |
---|
| 2788 | c. The history expansion code was fixed so that the appearance of the |
---|
| 2789 | history comment character at the beginning of a word inhibits history |
---|
| 2790 | expansion for that word and the rest of the input line. |
---|
| 2791 | |
---|
| 2792 | 3. New Features in Bash |
---|
| 2793 | |
---|
| 2794 | a. A new version of malloc, based on the older GNU malloc, that has many |
---|
| 2795 | changes, is more page-based, is more conservative with memory usage, |
---|
| 2796 | and does not `orphan' large blocks when they are freed. |
---|
| 2797 | |
---|
| 2798 | b. A new version of gmalloc, based on the old GLIBC malloc, with many |
---|
| 2799 | changes and range checking included by default. |
---|
| 2800 | |
---|
| 2801 | c. A new implementation of fnmatch(3) that includes full POSIX.2 Basic |
---|
| 2802 | Regular Expression matching, including character classes, collating |
---|
| 2803 | symbols, equivalence classes, and support for case-insensitive pattern |
---|
| 2804 | matching. |
---|
| 2805 | |
---|
| 2806 | d. ksh-88 egrep-style extended pattern matching ([@+*?!](patlist)) has been |
---|
| 2807 | implemented, controlled by a new `shopt' option, `extglob'. |
---|
| 2808 | |
---|
| 2809 | e. There is a new ksh-like `[[' compound command, which implements |
---|
| 2810 | extended `test' functionality. |
---|
| 2811 | |
---|
| 2812 | f. There is a new `printf' builtin, implemented according to the POSIX.2 |
---|
| 2813 | specification. |
---|
| 2814 | |
---|
| 2815 | g. There is a new feature for command substitution: $(< filename) now expands |
---|
| 2816 | to the contents of `filename', with any trailing newlines removed |
---|
| 2817 | (equivalent to $(cat filename)). |
---|
| 2818 | |
---|
| 2819 | h. There are new tilde prefixes which expand to directories from the |
---|
| 2820 | directory stack. |
---|
| 2821 | |
---|
| 2822 | i. There is a new `**' arithmetic operator to do exponentiation. |
---|
| 2823 | |
---|
| 2824 | j. There are new configuration options to control how bash is linked: |
---|
| 2825 | `--enable-profiling', to allow bash to be profiled with gprof, and |
---|
| 2826 | `--enable-static-link', to allow bash to be linked statically. |
---|
| 2827 | |
---|
| 2828 | k. There is a new configuration option, `--enable-cond-command', which |
---|
| 2829 | controls whether or not the `[[' command is included. It is on by |
---|
| 2830 | default. |
---|
| 2831 | |
---|
| 2832 | l. There is a new configuration option, `--enable-extended-glob', which |
---|
| 2833 | controls whether or not the ksh extended globbing feature is included. |
---|
| 2834 | It is enabled by default. |
---|
| 2835 | |
---|
| 2836 | m. There is a new configuration #define in config.h.top that, when enabled, |
---|
| 2837 | will cause all login shells to source /etc/profile and one of the user- |
---|
| 2838 | specific login shell startup files, whether or not the shell is |
---|
| 2839 | interactive. |
---|
| 2840 | |
---|
| 2841 | n. There is a new invocation option, `--dump-po-strings', to dump |
---|
| 2842 | a shell script's translatable strings ($"...") in GNU `po' format. |
---|
| 2843 | |
---|
| 2844 | o. There is a new `shopt' option, `nocaseglob', to enable case-insensitive |
---|
| 2845 | pattern matching when globbing filenames and using the `case' construct. |
---|
| 2846 | |
---|
| 2847 | p. There is a new `shopt' option, `huponexit', which, when enabled, causes |
---|
| 2848 | the shell to send SIGHUP to all jobs when an interactive login shell |
---|
| 2849 | exits. |
---|
| 2850 | |
---|
| 2851 | q. `bind' has a new `-u' option, which takes a readline function name as an |
---|
| 2852 | argument and unbinds all key sequences bound to that function in a |
---|
| 2853 | specified keymap. |
---|
| 2854 | |
---|
| 2855 | r. `disown' now has `-a' and `-r' options, to limit operation to all jobs |
---|
| 2856 | and running jobs, respectively. |
---|
| 2857 | |
---|
| 2858 | s. The `shopt' `-p' option now causes output to be displayed in a reusable |
---|
| 2859 | format. |
---|
| 2860 | |
---|
| 2861 | t. `test' has a new `-N' option, which returns true if the filename argument |
---|
| 2862 | has been modified since it was last accessed. |
---|
| 2863 | |
---|
| 2864 | u. `umask' now has a `-p' option to print output in a reusable format. |
---|
| 2865 | |
---|
| 2866 | v. A new escape sequence, `\xNNN', has been added to the `echo -e' and $'...' |
---|
| 2867 | translation code. It expands to the character whose ascii code is NNN |
---|
| 2868 | in hexadecimal. |
---|
| 2869 | |
---|
| 2870 | w. The prompt string expansion code has a new `\r' escape sequence. |
---|
| 2871 | |
---|
| 2872 | x. The shell may now be cross-compiled for the CYGWIN32 environment on |
---|
| 2873 | a Unix machine. |
---|
| 2874 | |
---|
| 2875 | 4. New Features in Readline |
---|
| 2876 | |
---|
| 2877 | a. There is now an option for `iterative' yank-last-arg handline, so a user |
---|
| 2878 | can keep entering `M-.', yanking the last argument of successive history |
---|
| 2879 | lines. |
---|
| 2880 | |
---|
| 2881 | b. New variable, `print-completions-horizontally', which causes completion |
---|
| 2882 | matches to be displayed across the screen (like `ls -x') rather than up |
---|
| 2883 | and down the screen (like `ls'). |
---|
| 2884 | |
---|
| 2885 | c. New variable, `completion-ignore-case', which causes filename completion |
---|
| 2886 | and matching to be performed case-insensitively. |
---|
| 2887 | |
---|
| 2888 | d. There is a new bindable command, `magic-space', which causes history |
---|
| 2889 | expansion to be performed on the current readline buffer and a space to |
---|
| 2890 | be inserted into the result. |
---|
| 2891 | |
---|
| 2892 | e. There is a new bindable command, `menu-complete', which enables tcsh-like |
---|
| 2893 | menu completion (successive executions of menu-complete insert a single |
---|
| 2894 | completion match, cycling through the list of possible completions). |
---|
| 2895 | |
---|
| 2896 | f. There is a new bindable command, `paste-from-clipboard', for use on Win32 |
---|
| 2897 | systems, to insert the text from the Win32 clipboard into the editing |
---|
| 2898 | buffer. |
---|
| 2899 | |
---|
| 2900 | g. The key sequence translation code now understands printf-style backslash |
---|
| 2901 | escape sequences, including \NNN octal escapes. These escape sequences |
---|
| 2902 | may be used in key sequence definitions or macro values. |
---|
| 2903 | |
---|
| 2904 | h. An `$include' inputrc file parser directive has been added. |
---|
| 2905 | |
---|
| 2906 | ------------------------------------------------------------------------------ |
---|
| 2907 | This document details the changes between this version, bash-2.01.1-release, |
---|
| 2908 | and the previous version, bash-2.01-release. |
---|
| 2909 | |
---|
| 2910 | 1. Changes to Bash |
---|
| 2911 | |
---|
| 2912 | a. The select command was fixed to check the validity of the user's |
---|
| 2913 | input more strenuously. |
---|
| 2914 | |
---|
| 2915 | b. A bug was fixed that prevented `time' from timing commands correctly |
---|
| 2916 | when supplied as an argument to `bash -c'. |
---|
| 2917 | |
---|
| 2918 | c. A fix was made to the mail checking code to keep from adding the same |
---|
| 2919 | mail file to the list of files to check multiple times when parsing |
---|
| 2920 | $MAILPATH. |
---|
| 2921 | |
---|
| 2922 | d. Fixed an off-by-one error in the tilde expansion library. |
---|
| 2923 | |
---|
| 2924 | e. When using the compound array assignment syntax, the old value of |
---|
| 2925 | the array is cleared before assigning the new value. |
---|
| 2926 | |
---|
| 2927 | f. Fixed a bug that could cause a core dump when a trap handler was reset |
---|
| 2928 | to the default in the trap command associated with that signal. |
---|
| 2929 | |
---|
| 2930 | g. Fixed a bug in the locale code that occurred when assigning a value |
---|
| 2931 | to LC_ALL. |
---|
| 2932 | |
---|
| 2933 | h. A change was made to the parser so that words of the form xxx=(...) |
---|
| 2934 | are not considered compound assignment statements unless there are |
---|
| 2935 | characters before the `='. |
---|
| 2936 | |
---|
| 2937 | i. A fix was made to the command tracing code to correctly quote each |
---|
| 2938 | word of output. |
---|
| 2939 | |
---|
| 2940 | j. Some changes were made to the bash-specific autoconf tests to make them |
---|
| 2941 | more portable. |
---|
| 2942 | |
---|
| 2943 | k. Completion of words with globbing characters now correctly quotes the |
---|
| 2944 | result. |
---|
| 2945 | |
---|
| 2946 | l. The directory /var/spool/mail is now preferred to /usr/spool/mail when |
---|
| 2947 | configure is deciding on the default mail directory. |
---|
| 2948 | |
---|
| 2949 | m. The brace completion code was fixed to not quote the `{' and `}'. |
---|
| 2950 | |
---|
| 2951 | n. Some fixes were made to make $RANDOM more random in subshells. |
---|
| 2952 | |
---|
| 2953 | o. System-specific changes were made to configure for: SVR4.2 |
---|
| 2954 | |
---|
| 2955 | p. Changes were made so that completion of words containing globbing chars |
---|
| 2956 | substitutes the result only if a single filename was matched. |
---|
| 2957 | |
---|
| 2958 | q. The window size is now recomputed after a job is stopped with SIGTSTP if |
---|
| 2959 | the user has set `checkwinsize' with `shopt'. |
---|
| 2960 | |
---|
| 2961 | r. When doing substring expansion, out-of-range substring specifiers now |
---|
| 2962 | cause nothing to be substituted rather than an expansion error. |
---|
| 2963 | |
---|
| 2964 | s. A fix was made so that you can no longer trap `SIGEXIT' or `SIGDEBUG' -- |
---|
| 2965 | only `EXIT' and `DEBUG' are accepted. |
---|
| 2966 | |
---|
| 2967 | t. The display of trapped signals now uses the signal number if signals |
---|
| 2968 | for which bash does not know the name are trapped. |
---|
| 2969 | |
---|
| 2970 | u. A fix was made so that `bash -r' does not turn on restricted mode until |
---|
| 2971 | after the startup files are executed. |
---|
| 2972 | |
---|
| 2973 | v. A bug was fixed that occasionally caused a core dump when a variable |
---|
| 2974 | found in the temporary environment of export/declare/readonly had a |
---|
| 2975 | null value. |
---|
| 2976 | |
---|
| 2977 | w. A bug that occasionally caused unallocated memory to be passed to free() |
---|
| 2978 | when doing arithmetic substitution was fixed. |
---|
| 2979 | |
---|
| 2980 | x. A bug that caused a buffer overrun when expanding a prompt string |
---|
| 2981 | containing `\w' and ${#PWD} exceeded PATH_MAX was fixed. |
---|
| 2982 | |
---|
| 2983 | y. A problem with the completion code that occasionally caused it to |
---|
| 2984 | refer to a character before the beginning of the readline line buffer |
---|
| 2985 | was fixed. |
---|
| 2986 | |
---|
| 2987 | z. A bug was fixed so that the `read' builtin restarts reads when |
---|
| 2988 | interrupted by signals other than SIGINT. |
---|
| 2989 | |
---|
| 2990 | aa. Fixed a bug that caused a command to be freed twice when there was |
---|
| 2991 | an evaluation error in the `eval' command. |
---|
| 2992 | |
---|
| 2993 | 2. Changes to Readline |
---|
| 2994 | |
---|
| 2995 | a. Added a missing `extern' to a declaration in readline.h that kept |
---|
| 2996 | readline from compiling cleanly on some systems. |
---|
| 2997 | |
---|
| 2998 | b. The history file is now opened with mode 0600 when it is written for |
---|
| 2999 | better security. |
---|
| 3000 | |
---|
| 3001 | c. Changes were made to the SIGWINCH handling code so that prompt redisplay |
---|
| 3002 | is done better. |
---|
| 3003 | |
---|
| 3004 | d. ^G now interrupts incremental searches correctly. |
---|
| 3005 | |
---|
| 3006 | e. A bug that caused a core dump when the set of characters to be quoted |
---|
| 3007 | when completing words was empty was fixed. |
---|
| 3008 | |
---|
| 3009 | ------------------------------------------------------------------------------ |
---|
| 3010 | This document details the changes between this version, bash-2.01-release, |
---|
| 3011 | and the previous version, bash-2.01-beta2. |
---|
| 3012 | |
---|
| 3013 | 1. Changes to Bash |
---|
| 3014 | |
---|
| 3015 | a. The `distclean' target should remove the `printenv' executable if it |
---|
| 3016 | has been created. |
---|
| 3017 | |
---|
| 3018 | b. The test suite was changed slightly to ensure that the error messages |
---|
| 3019 | are printed in English. |
---|
| 3020 | |
---|
| 3021 | c. A bug that caused the shell to dump core when a filename containing a |
---|
| 3022 | `/' was passed to `hash' was fixed. |
---|
| 3023 | |
---|
| 3024 | d. Pathname canonicalization now leaves a leading `//' intact, as POSIX.1 |
---|
| 3025 | requires. |
---|
| 3026 | |
---|
| 3027 | e. A memory leak when completing commands was fixed. |
---|
| 3028 | |
---|
| 3029 | f. A memory leak that occurred when checking the hash table for commands |
---|
| 3030 | with relative paths was fixed. |
---|
| 3031 | |
---|
| 3032 | ------------------------------------------------------------------------------ |
---|
| 3033 | This document details the changes between this version, bash-2.01-beta2, |
---|
| 3034 | and the previous version, bash-2.01-beta1. |
---|
| 3035 | |
---|
| 3036 | 1. Changes to Bash |
---|
| 3037 | |
---|
| 3038 | a. The `ulimit' builtin translates RLIM_INFINITY to the hard limit only if |
---|
| 3039 | the current (soft) limit is less than or equal to the hard limit. |
---|
| 3040 | |
---|
| 3041 | b. Fixed a bug that caused the bash emulation of strcasecmp to produce |
---|
| 3042 | incorrect results. |
---|
| 3043 | |
---|
| 3044 | c. A bug that caused memory to be freed twice when a trap handler resets |
---|
| 3045 | the trap more than once was fixed. |
---|
| 3046 | |
---|
| 3047 | d. A bug that caused machines where sizeof (pointer) > sizeof (int) to |
---|
| 3048 | fail (and possibly dump core) when trying to unwind-protect a null |
---|
| 3049 | pointer was fixed. |
---|
| 3050 | |
---|
| 3051 | e. The startup files should not be run with job control enabled. This fix |
---|
| 3052 | allows SIGINT to once again interrupt startup file execution. |
---|
| 3053 | |
---|
| 3054 | f. Bash should not change the SIGPROF handler if it is set to something |
---|
| 3055 | other than SIG_DFL. |
---|
| 3056 | |
---|
| 3057 | g. The completion code that provides bash-specific completions for readline |
---|
| 3058 | now quotes characters that the readline code would treat as word break |
---|
| 3059 | characters if they appear in a file name. |
---|
| 3060 | |
---|
| 3061 | h. The completion code now correctly quotes filenames containing a `!', |
---|
| 3062 | even if the user attempted to use double quotes when attempting |
---|
| 3063 | completion. |
---|
| 3064 | |
---|
| 3065 | i. A bug that caused the shell to dump core when `disown' was called without |
---|
| 3066 | arguments and there was no current job was fixed. |
---|
| 3067 | |
---|
| 3068 | j. A construct like $((foo);bar) is now processed as a command substitution |
---|
| 3069 | rather than as a bad arithmetic substitution. |
---|
| 3070 | |
---|
| 3071 | k. A couple of bugs that caused `fc' to not obey the `cmdhist' and `lithist' |
---|
| 3072 | shell options when editing and re-executing a series of commands were |
---|
| 3073 | fixed. |
---|
| 3074 | |
---|
| 3075 | l. A fix was made to the grammar -- the list of commands between `do' and |
---|
| 3076 | `done' in the body of a `for' command should be treated the same as a |
---|
| 3077 | while loop. |
---|
| 3078 | |
---|
| 3079 | 2. Changes to Readline |
---|
| 3080 | |
---|
| 3081 | a. A couple of bugs that caused the history search functions to attempt to |
---|
| 3082 | free a NULL pointer were fixed. |
---|
| 3083 | |
---|
| 3084 | b. If the C library provides setlocale(3), readline does not need to look |
---|
| 3085 | at various environment variables to decide whether or not to go into |
---|
| 3086 | eight-bit mode automatically -- just check whether the current locale |
---|
| 3087 | is not `C' or `POSIX'. |
---|
| 3088 | |
---|
| 3089 | c. If the filename completion function finds that a directory was not closed |
---|
| 3090 | by a previous (interrupted) completion, it closes the directory with |
---|
| 3091 | closedir(). |
---|
| 3092 | |
---|
| 3093 | 3. New Features in Bash |
---|
| 3094 | |
---|
| 3095 | a. New bindable readline commands: history-and-alias-expand-line and |
---|
| 3096 | alias-expand-line. The code was always in there, there was just no |
---|
| 3097 | way to execute it. |
---|
| 3098 | |
---|
| 3099 | ------------------------------------------------------------------------------ |
---|
| 3100 | This document details the changes between this version, bash-2.01-beta1, |
---|
| 3101 | and the previous version, bash-2.01-alpha1. |
---|
| 3102 | |
---|
| 3103 | 1. Changes to Bash |
---|
| 3104 | |
---|
| 3105 | a. Fixed a problem that could cause file descriptors used for process |
---|
| 3106 | substitution to conflict with those used explicitly in redirections. |
---|
| 3107 | |
---|
| 3108 | b. Made it easier to regenerate configure if the user changes configure.in. |
---|
| 3109 | |
---|
| 3110 | c. ${GROUPS[0]} should always be the primary group, even on systems without |
---|
| 3111 | multiple groups. |
---|
| 3112 | |
---|
| 3113 | d. Spelling correction is no longer enabled by default. |
---|
| 3114 | |
---|
| 3115 | e. Fixes to quoting problems in `bashbug'. |
---|
| 3116 | |
---|
| 3117 | f. OS-specific configuration changes were made for: Irix 6. |
---|
| 3118 | |
---|
| 3119 | g. OS-specific code changes were made for: QNX. |
---|
| 3120 | |
---|
| 3121 | h. A more meaningful message is now printed when the file in /tmp for a |
---|
| 3122 | here document cannot be created. |
---|
| 3123 | |
---|
| 3124 | i. Many changes to the shell's variable initialization code to speed |
---|
| 3125 | non-interactive startup. |
---|
| 3126 | |
---|
| 3127 | j. Changes to the non-job-control code so that it does not try to open |
---|
| 3128 | /dev/tty. |
---|
| 3129 | |
---|
| 3130 | k. The output of `set' and `export' is once again sorted, as POSIX wants. |
---|
| 3131 | |
---|
| 3132 | l. Fixed a problem caused by a recursive call reparsing the value of |
---|
| 3133 | $SHELLOPTS. |
---|
| 3134 | |
---|
| 3135 | m. The tilde code no longer calls getenv() when it's compiled as part of |
---|
| 3136 | the shell, which should eliminate problems on systems that cannot |
---|
| 3137 | redefine getenv(), like the NeXT OS. |
---|
| 3138 | |
---|
| 3139 | n. Fixed a problem that caused `bash -o' or `bash +o' to not list all |
---|
| 3140 | the shell options. |
---|
| 3141 | |
---|
| 3142 | o. Fixed `ulimit' to convert RLIM_INFINITY to the appropriate hard limit |
---|
| 3143 | only if the hard limit is greater than the current (soft) limit. |
---|
| 3144 | |
---|
| 3145 | p. Fixed a problem that arose when building bash in a different directory |
---|
| 3146 | than the source and y.tab.[ch] were remade with something other than |
---|
| 3147 | bison. This came up most often on NetBSD. |
---|
| 3148 | |
---|
| 3149 | q. Fixed a problem with completion -- it thought that `pwd`/[TAB] indicated |
---|
| 3150 | an unfinished command completion (`/), which generated errors. |
---|
| 3151 | |
---|
| 3152 | r. The bash special tilde expansions (~-, ~+) are now attempted before |
---|
| 3153 | calling the standard tilde expansion code, which should eliminate the |
---|
| 3154 | problems people have been seeing with this on Solaris 2.5.1. |
---|
| 3155 | |
---|
| 3156 | s. Added support for <stdarg.h> to places where it was missing. |
---|
| 3157 | |
---|
| 3158 | t. Changed the code that reads the output of a command substitution to not |
---|
| 3159 | go through stdio. This reduces the memory requirements and is faster. |
---|
| 3160 | |
---|
| 3161 | u. A number of changes to speed up export environment creation were made. |
---|
| 3162 | |
---|
| 3163 | v. A number of memory leaks were fixed as the result of running the test |
---|
| 3164 | scripts through Purify. |
---|
| 3165 | |
---|
| 3166 | w. Fixed a bug that caused subshells forked to interpret executable |
---|
| 3167 | scripts without a leading `#!' to not reinitialize the values of |
---|
| 3168 | the shell options. |
---|
| 3169 | |
---|
| 3170 | 2. Changes to Readline |
---|
| 3171 | |
---|
| 3172 | a. History library has less `#ifdef SHELL' code -- abstracted stuff out |
---|
| 3173 | into application-specific function hooks. |
---|
| 3174 | |
---|
| 3175 | b. Readline no longer calls getenv() if it's compiled as part of the shell, |
---|
| 3176 | which should eliminate problems on systems that cannot redefine getenv(), |
---|
| 3177 | like the NeXT OS. |
---|
| 3178 | |
---|
| 3179 | c. Fixed translation of ESC when `untranslating' macro values. |
---|
| 3180 | |
---|
| 3181 | d. The region kill operation now fixes the mark if it ends up beyond the |
---|
| 3182 | boundaries of the line after the region is deleted. |
---|
| 3183 | |
---|
| 3184 | 3. New Features in Bash |
---|
| 3185 | |
---|
| 3186 | a. New argument for `configure': `--with-curses'. This can be used to |
---|
| 3187 | override the selection of the termcap library on systems where it is |
---|
| 3188 | deficient. |
---|
| 3189 | |
---|
| 3190 | ------------------------------------------------------------------------------ |
---|
| 3191 | This document details the changes between this version, bash-2.01-alpha1, |
---|
| 3192 | and the previous version, bash-2.0-release. |
---|
| 3193 | |
---|
| 3194 | 1. Changes to Bash |
---|
| 3195 | |
---|
| 3196 | a. System-specific configuration changes for: FreeBSD, SunOS4, Irix, |
---|
| 3197 | MachTen, QNX 4.2, Harris Night Hawk, SunOS5. |
---|
| 3198 | |
---|
| 3199 | b. System-specific code changes were made for: Linux, 4.4 BSD, QNX 4.2, |
---|
| 3200 | HP-UX, AIX 4.2. |
---|
| 3201 | |
---|
| 3202 | c. A bug that caused the exec builtin to fail because the full pathname of |
---|
| 3203 | the command could not be found was fixed. |
---|
| 3204 | |
---|
| 3205 | d. The code that performs output redirections is now more resistant to |
---|
| 3206 | race conditions and possible security exploits. |
---|
| 3207 | |
---|
| 3208 | e. A bug that caused the shell to dump core when performing pattern |
---|
| 3209 | substitutions on variable values was fixed. |
---|
| 3210 | |
---|
| 3211 | f. More hosts are now recognized by the auto-configuration mechanism |
---|
| 3212 | (OpenBSD, QNX, others). |
---|
| 3213 | |
---|
| 3214 | g. Assignments to read-only variables that attempt to convert them to |
---|
| 3215 | arrays are now errors. |
---|
| 3216 | |
---|
| 3217 | h. A bug that caused shell scripts using array assignments in POSIX mode |
---|
| 3218 | to exit after the assignment was performed was fixed. |
---|
| 3219 | |
---|
| 3220 | i. The substring expansion code is now more careful about running off the |
---|
| 3221 | ends of the expanded variable value. |
---|
| 3222 | |
---|
| 3223 | j. A bug that caused completion to fail if a backquoted command substitution |
---|
| 3224 | appeared anywhere on the line was fixed. |
---|
| 3225 | |
---|
| 3226 | k. The `source' builtin no longer turns off history if it has been enabled |
---|
| 3227 | in a non-interactive shell. |
---|
| 3228 | |
---|
| 3229 | l. A bug that caused the shell to crash when `disown' was given a pid |
---|
| 3230 | instead of a job number was fixed. |
---|
| 3231 | |
---|
| 3232 | m. The `cd' spelling correction code will not try to change to `.' if no |
---|
| 3233 | directory entries match a single-character argument. |
---|
| 3234 | |
---|
| 3235 | n. A bad variable name supplied to `declare', `export', or `readonly' no |
---|
| 3236 | longer causes a non-interactive shell in POSIX mode to exit. |
---|
| 3237 | |
---|
| 3238 | o. Some fixes were made to the test suite to handle peculiarities of |
---|
| 3239 | various Unix versions. |
---|
| 3240 | |
---|
| 3241 | p. The bash completion code now quotes characters that readline would |
---|
| 3242 | treat as word breaks for completion but are not shell metacharacters. |
---|
| 3243 | |
---|
| 3244 | q. Bad options supplied at invocation now cause a usage message to be |
---|
| 3245 | displayed. |
---|
| 3246 | |
---|
| 3247 | r. Fixes were made to the code that handles DEBUG traps so that the trap |
---|
| 3248 | string is not freed inappropriately. |
---|
| 3249 | |
---|
| 3250 | s. Some changes were made to the bash debugger in examples/bashdb -- it |
---|
| 3251 | should be closer to working now. |
---|
| 3252 | |
---|
| 3253 | t. A problem that caused the default filename used for mail checking to be |
---|
| 3254 | wrong was fixed. |
---|
| 3255 | |
---|
| 3256 | u. A fix was made to the `echo' builtin so that NUL characters printed with |
---|
| 3257 | `echo -e' do not cause the output to be truncated. |
---|
| 3258 | |
---|
| 3259 | v. A fix was made to the job control code so that the shell behaves better |
---|
| 3260 | when monitor mode is enabled in a non-interactive shell. |
---|
| 3261 | |
---|
| 3262 | w. Bash no longer catches all of the terminating signals in a non- |
---|
| 3263 | interactive shell until a trap is set on EXIT, which should result in |
---|
| 3264 | quicker startup. |
---|
| 3265 | |
---|
| 3266 | x. A fix was made to the command timing code so that `time' can be used in |
---|
| 3267 | a loop. |
---|
| 3268 | |
---|
| 3269 | y. A fix was made to the parser so that `((cmd); cmd2)' is now parsed as |
---|
| 3270 | a nested subshell rather than strictly as an (erroneous) arithmetic |
---|
| 3271 | command. |
---|
| 3272 | |
---|
| 3273 | z. A fix was made to the globbing code so that it correctly matches quoted |
---|
| 3274 | filenames beginning with a `.'. |
---|
| 3275 | |
---|
| 3276 | aa. A bug in `fc' that caused some multi-line commands to not be stored as |
---|
| 3277 | one command in the history when they were re-executed after editing |
---|
| 3278 | (with `fc -e') was fixed. |
---|
| 3279 | |
---|
| 3280 | bb. The `ulimit' builtin now attempts to catch some classes of integer |
---|
| 3281 | overflows. |
---|
| 3282 | |
---|
| 3283 | cc. The command-oriented-history code no longer attempts to add `;' |
---|
| 3284 | inappropriately when a newline appears while reading a $(...) command |
---|
| 3285 | substitution. |
---|
| 3286 | |
---|
| 3287 | dd. A bug that caused the shell to dump core when `help --' was executed |
---|
| 3288 | was fixed. |
---|
| 3289 | |
---|
| 3290 | ee. A bug that caused the shell to crash when an unset variable appeared |
---|
| 3291 | in the body of a here document after `set -u' had been executed was |
---|
| 3292 | fixed. |
---|
| 3293 | |
---|
| 3294 | ff. Implicit input redirections from /dev/null for asynchronous commands |
---|
| 3295 | are now handled better. |
---|
| 3296 | |
---|
| 3297 | gg. A bug that caused the shell to fail to compile when configured with |
---|
| 3298 | `--disable-readline' was fixed. |
---|
| 3299 | |
---|
| 3300 | hh. The globbing code should now be interruptible. |
---|
| 3301 | |
---|
| 3302 | ii. Bash now notices when the `kill' builtin is used to send SIGCONT to a |
---|
| 3303 | stopped job and adjusts the data structures accordingly, as if `bg' had |
---|
| 3304 | been executed instead. |
---|
| 3305 | |
---|
| 3306 | jj. A bug that caused the shell to crash when mixing calls to `getopts' |
---|
| 3307 | and `shift' on the same set of positional parameters was fixed. |
---|
| 3308 | |
---|
| 3309 | kk. The command printing code now preserves the `-p' flag to `time'. |
---|
| 3310 | |
---|
| 3311 | ll. The command printing code now handles here documents better when there |
---|
| 3312 | are other redirections associated with the command. |
---|
| 3313 | |
---|
| 3314 | mm. The special glibc environment variable (NNN_GNU_nonoption_argv_flags_) |
---|
| 3315 | is no longer placed into the environment of executed commands -- users |
---|
| 3316 | of glibc had too many problems with it. |
---|
| 3317 | |
---|
| 3318 | nn. Reorganized the code that generates signames.h. The signal_names list |
---|
| 3319 | is now more complete but may be slightly different (SIGABRT is favored |
---|
| 3320 | over SIGIOT, for example). The preferred signal names are those |
---|
| 3321 | listed in the POSIX.2 standard. |
---|
| 3322 | |
---|
| 3323 | oo. `bashbug' now uses a filename shorter than 14 characters for its |
---|
| 3324 | temporary file, and asks for confirmation before sending the bug |
---|
| 3325 | report. |
---|
| 3326 | |
---|
| 3327 | pp. A bug that caused TAB completion in vi editing mode to not be turned |
---|
| 3328 | off when `set -o posix' was executed or back on when `set +o posix' |
---|
| 3329 | was executed was fixed. |
---|
| 3330 | |
---|
| 3331 | qq. A bug in the brace expansion code that caused brace expansions appearing |
---|
| 3332 | in new-style $(...) command substitutions to be inappropriately expanded |
---|
| 3333 | was fixed. |
---|
| 3334 | |
---|
| 3335 | rr. A bug in the readline hook shell-expand-line that could cause memory to |
---|
| 3336 | be inappropriately freed was fixed. |
---|
| 3337 | |
---|
| 3338 | ss. A bug that caused some arithmetic expressions containing `&&' and `||' |
---|
| 3339 | to be parsed with the wrong precedence has been fixed. |
---|
| 3340 | |
---|
| 3341 | tt. References to unbound variables after `set -u' has been executed now |
---|
| 3342 | cause the shell to exit immediately, as they should. |
---|
| 3343 | |
---|
| 3344 | uu. A bug that caused the shell to exit inappropriately when `set -e' had |
---|
| 3345 | been executed and a command's return status was being inverted with the |
---|
| 3346 | `!' reserved word was fixed. |
---|
| 3347 | |
---|
| 3348 | vv. A bug that could occasionally cause the shell to crash with a |
---|
| 3349 | divide-by-zero error when timing a command was fixed. |
---|
| 3350 | |
---|
| 3351 | ww. A bug that caused parameter pattern substitution to leave stray |
---|
| 3352 | backslashes in the replacement string when the expression is in |
---|
| 3353 | double quotes was fixed. |
---|
| 3354 | |
---|
| 3355 | xx. The `break' and `continue' builtins now break out of all loops when an |
---|
| 3356 | invalid count argument is supplied. |
---|
| 3357 | |
---|
| 3358 | yy. Fixed a bug that caused PATH to be set to the empty string if |
---|
| 3359 | `command -p' is executed with PATH unset. |
---|
| 3360 | |
---|
| 3361 | zz. Fixed `kill -l signum' to print the signal name without the `SIG' prefix, |
---|
| 3362 | as POSIX specifies. |
---|
| 3363 | |
---|
| 3364 | aaa. Fixed a bug that caused the shell to crash while setting $SHELLOPTS |
---|
| 3365 | if there were no shell options set. |
---|
| 3366 | |
---|
| 3367 | bbb. Fixed `export -p' and `readonly -p' so that when the shell is in POSIX |
---|
| 3368 | mode, their output is as POSIX.2 specifies. |
---|
| 3369 | |
---|
| 3370 | ccc. Fixed a bug in `readonly' so that `readonly -a avar=(...)' actually |
---|
| 3371 | creates an array variable. |
---|
| 3372 | |
---|
| 3373 | ddd. Fixed a bug that prevented `time' from correctly timing background |
---|
| 3374 | pipelines. |
---|
| 3375 | |
---|
| 3376 | 2. Changes to Readline |
---|
| 3377 | |
---|
| 3378 | a. A bug that caused an extra newline to be printed when the cursor was on |
---|
| 3379 | an otherwise empty line was fixed. |
---|
| 3380 | |
---|
| 3381 | b. An instance of memory being used after it was freed was corrected. |
---|
| 3382 | |
---|
| 3383 | c. The redisplay code now works when the prompt is longer than the screen |
---|
| 3384 | width. |
---|
| 3385 | |
---|
| 3386 | d. `dump-macros' is now a bindable name, as it should have been all along. |
---|
| 3387 | |
---|
| 3388 | e. Non-printable characters are now expanded when displaying macros and |
---|
| 3389 | their values. |
---|
| 3390 | |
---|
| 3391 | f. The `dump-variables' and `dump-macros' commands now output a leading |
---|
| 3392 | newline if they're called as the result of a key sequence, rather |
---|
| 3393 | than directly by an application. |
---|
| 3394 | |
---|
| 3395 | 3. New Features in Bash |
---|
| 3396 | |
---|
| 3397 | a. There is a new builtin array variable: GROUPS, the set of groups to which |
---|
| 3398 | the user belongs. This is used by the test suite. |
---|
| 3399 | |
---|
| 3400 | 4. New Features in Readline |
---|
| 3401 | |
---|
| 3402 | a. If a key sequence bound to `universal-argument' is read while reading a |
---|
| 3403 | numeric argument started with `universal-argument', it terminates the |
---|
| 3404 | argument but is otherwise ignored. This provides a way to insert multiple |
---|
| 3405 | instances of a digit string, and is how GNU emacs does it. |
---|
| 3406 | |
---|
| 3407 | ------------------------------------------------------------------------------ |
---|
| 3408 | This document details the changes between this version, bash-2.0-release, |
---|
| 3409 | and the previous version, bash-2.0-beta3. |
---|
| 3410 | |
---|
| 3411 | 1. Changes to Bash |
---|
| 3412 | |
---|
| 3413 | a. Fix to the `getopts' builtin so that it does the right thing when a |
---|
| 3414 | required option argument is not present. |
---|
| 3415 | |
---|
| 3416 | b. The completion code now updates the common prefix of matched names |
---|
| 3417 | after FIGNORE processing is done, since any names that were removed |
---|
| 3418 | may have changed the common prefix. |
---|
| 3419 | |
---|
| 3420 | c. Fixed a bug that made messages in MAILPATH entries not work correctly. |
---|
| 3421 | |
---|
| 3422 | d. Fixed a serious documentation error in the description of the new |
---|
| 3423 | ${parameter:offset[:length]} expansion. |
---|
| 3424 | |
---|
| 3425 | e. Fixes to make parameter substring expansion ({$param:offset[:length]}) |
---|
| 3426 | work when within double quotes. |
---|
| 3427 | |
---|
| 3428 | f. Fixes to make ^A (CTLESC) survive an unquoted expansion of positional |
---|
| 3429 | parameters. |
---|
| 3430 | |
---|
| 3431 | g. Corrected a misspelling of `unlimited' in the output of `ulimit'. |
---|
| 3432 | |
---|
| 3433 | h. Fixed a bug that caused executable scripts without a leading `#!' to |
---|
| 3434 | occasionally pick up the wrong set of positional parameters. |
---|
| 3435 | |
---|
| 3436 | i. Linux systems now have a working `ulimit -v', using RLIMIT_AS. |
---|
| 3437 | |
---|
| 3438 | j. Updated config.guess so that many more machine types are recognized. |
---|
| 3439 | |
---|
| 3440 | k. Fixed a bug with backslash-quoted slashes in the ${param/pat[/sub]} |
---|
| 3441 | expansion. |
---|
| 3442 | |
---|
| 3443 | l. If the shell is named `-su', and `-c command' is supplied, read and |
---|
| 3444 | execute the login shell startup files even though the shell is not |
---|
| 3445 | interactive. This is to support the `-' option to `su'. |
---|
| 3446 | |
---|
| 3447 | m. Fixed a bug that caused core dumps when the DEBUG trap was ignored |
---|
| 3448 | with `trap "" DEBUG' and a shell function was subsequently executed. |
---|
| 3449 | |
---|
| 3450 | n. Fixed a bug that caused core dumps in the read builtin when IFS was |
---|
| 3451 | set to the null string and the input had leading whitespace. |
---|
| 3452 | |
---|
| 3453 | 2. Changes to Readline |
---|
| 3454 | |
---|
| 3455 | a. Fixed a bug that caused a numeric argument of 1024 to be ignored when |
---|
| 3456 | inserting text. |
---|
| 3457 | |
---|
| 3458 | b. Fixed the display code so that the numeric argument is displayed as it's |
---|
| 3459 | being entered. |
---|
| 3460 | |
---|
| 3461 | c. Fixed the numeric argument reading code so that `M-- command' is |
---|
| 3462 | equivalent to `M--1 command', as the prompt implies. |
---|
| 3463 | |
---|
| 3464 | 3. New Features in Bash |
---|
| 3465 | |
---|
| 3466 | a. `ulimit' now sets both hard and soft limits and reports the soft limit |
---|
| 3467 | by default (when neither -H nor -S is specified). This is compatible |
---|
| 3468 | with versions of sh and ksh that implement `ulimit'. |
---|
| 3469 | |
---|
| 3470 | b. Integer constants have been extended to base 64. |
---|
| 3471 | |
---|
| 3472 | 4. New Features in Readline |
---|
| 3473 | |
---|
| 3474 | a. The `home' and `end' keys are now bound to beginning-of-line and |
---|
| 3475 | end-of-line, respectively, if the corresponding termcap capabilities |
---|
| 3476 | are present. |
---|
| 3477 | |
---|
| 3478 | ------------------------------------------------------------------------------ |
---|
| 3479 | This document details the changes between this version, bash-2.0-beta3, |
---|
| 3480 | and the previous version, bash-2.0-beta2. |
---|
| 3481 | |
---|
| 3482 | 1. Changes to Bash |
---|
| 3483 | |
---|
| 3484 | a. System-specific changes for: AIX 4.2, SCO 3.2v[45], HP-UX. |
---|
| 3485 | |
---|
| 3486 | b. When in POSIX mode, variable assignments preceding a special builtin |
---|
| 3487 | persist in the shell environment after the builtin completes. |
---|
| 3488 | |
---|
| 3489 | c. Changed all calls to getwd() to getcwd(). Improved check for systems |
---|
| 3490 | where the libc getcwd() calls popen(), since that breaks on some |
---|
| 3491 | systems when job control is being used. |
---|
| 3492 | |
---|
| 3493 | d. Fixed a bug that caused seg faults when executing scripts with the |
---|
| 3494 | execute bit set but without a leading `#!'. |
---|
| 3495 | |
---|
| 3496 | e. The environment passed to executed commands is never sorted. |
---|
| 3497 | |
---|
| 3498 | f. A bug was fixed in the code that expands ${name[@]} to the number of |
---|
| 3499 | elements in an array variable. |
---|
| 3500 | |
---|
| 3501 | g. A bug was fixed in the array compound assignment code ( A=( ... ) ). |
---|
| 3502 | |
---|
| 3503 | h. Window size changes now correctly propagate down to readline if |
---|
| 3504 | the shopt `checkwinsize' option is enabled. |
---|
| 3505 | |
---|
| 3506 | i. A fix was made in the code that expands to the length of a variable |
---|
| 3507 | value (${#var}). |
---|
| 3508 | |
---|
| 3509 | j. A fix was made to the command builtin so that it did not turn on the |
---|
| 3510 | `no fork' flag inappropriately. |
---|
| 3511 | |
---|
| 3512 | k. A fix was made to make `set -n' work more reliably. |
---|
| 3513 | |
---|
| 3514 | l. A fix was made to the job control initialization code so that the |
---|
| 3515 | terminal process group is set to the shell's process group if the |
---|
| 3516 | shell changes its own process group. |
---|
| 3517 | |
---|
| 3518 | 2. Changes to Readline |
---|
| 3519 | |
---|
| 3520 | a. System-specific changes for: SCO 3.2v[45]. |
---|
| 3521 | |
---|
| 3522 | b. The behavior of the vi-mode `.' when redoing an `i' command was changed |
---|
| 3523 | to insert the text previously inserted by the `i' command rather than |
---|
| 3524 | simply entering insert mode. |
---|
| 3525 | |
---|
| 3526 | 3. New features in Bash |
---|
| 3527 | |
---|
| 3528 | a. There is a new version of the autoload function package, in |
---|
| 3529 | examples/functions/autoload.v2, that uses arrays and provides more |
---|
| 3530 | functionality. |
---|
| 3531 | |
---|
| 3532 | b. Support for LC_COLLATE and locale-specific sorting of the results of |
---|
| 3533 | pathname expansion if strcoll() is available. |
---|
| 3534 | |
---|
| 3535 | 4. New Features in Readline |
---|
| 3536 | |
---|
| 3537 | a. Support for locale-specific sorting of completion possibilities if |
---|
| 3538 | strcoll() is available. |
---|
| 3539 | |
---|
| 3540 | ------------------------------------------------------------------------------ |
---|
| 3541 | This document details the changes between this version, bash-2.0-beta2, |
---|
| 3542 | and the previous version, bash-2.0-beta1. |
---|
| 3543 | |
---|
| 3544 | 1. Changes to Bash |
---|
| 3545 | |
---|
| 3546 | a. `pushd -' is once again equivalent to `pushd $OLDPWD'. |
---|
| 3547 | |
---|
| 3548 | b. OS-specific changes for: SCO 3.2v[45]. |
---|
| 3549 | |
---|
| 3550 | c. A change was made to the fix for the recently-reported security hole |
---|
| 3551 | when reading characters with octal value 255 to make it work better on |
---|
| 3552 | systems with restartable system calls when not using readline. |
---|
| 3553 | |
---|
| 3554 | d. Some changes were made to the test suite so that it works if you |
---|
| 3555 | configure bash with --enable-usg-echo-default. |
---|
| 3556 | |
---|
| 3557 | e. A fix was made to the parsing of conditional arithmetic expressions. |
---|
| 3558 | |
---|
| 3559 | f. Illegal arithmetic bases now cause an arithmetic evaluation error rather |
---|
| 3560 | than being silently reset. |
---|
| 3561 | |
---|
| 3562 | g. Multiple arithmetic bases now cause an arithmetic evaluation error |
---|
| 3563 | instead of being ignored. |
---|
| 3564 | |
---|
| 3565 | h. A fix was made to the evaluation of ${param?word} to conform to POSIX.2. |
---|
| 3566 | |
---|
| 3567 | i. A bug that sometimes caused array indices to be evaluated twice (which |
---|
| 3568 | would cause errors when they contained assignment statements) was fixed. |
---|
| 3569 | |
---|
| 3570 | j. `ulimit' was rewritten to avoid problems with getrlimit(2) returning |
---|
| 3571 | unsigned values and to simplify the code. |
---|
| 3572 | |
---|
| 3573 | k. A bug in the command-oriented-history code that caused it to sometimes |
---|
| 3574 | put semicolons after right parens inappropriately was fixed. |
---|
| 3575 | |
---|
| 3576 | l. The values inserted into the prompt by the \w and \W escape sequences |
---|
| 3577 | are now quoted to prevent further expansion. |
---|
| 3578 | |
---|
| 3579 | m. An interactive shell invoked as `sh' now reads and executes commands |
---|
| 3580 | from the file named by $ENV when it starts up. If it's a login shell, |
---|
| 3581 | it does this after reading /etc/profile and ~/.profile. |
---|
| 3582 | |
---|
| 3583 | n. The file named by $ENV is never read by non-interactive shells. |
---|
| 3584 | |
---|
| 3585 | 2. Changes to Readline |
---|
| 3586 | |
---|
| 3587 | a. A few changes were made to hide some macros and functions that should not |
---|
| 3588 | be public. |
---|
| 3589 | |
---|
| 3590 | b. An off-by-one error that caused seg faults in the history expansion code |
---|
| 3591 | was fixed. |
---|
| 3592 | |
---|
| 3593 | 3. New Features in Bash |
---|
| 3594 | |
---|
| 3595 | a. The ksh-style ((...)) arithmetic command was implemented. It is exactly |
---|
| 3596 | identical to let "...". This is controlled by a new option to configure, |
---|
| 3597 | `--enable-dparen-arithmetic', which is on by default. |
---|
| 3598 | |
---|
| 3599 | b. There is a new #define available in config.h.top: SYS_BASH_LOGOUT. If |
---|
| 3600 | defined to a filename, bash reads and executes commands from that file |
---|
| 3601 | when a login shell exits. It's commented out by default. |
---|
| 3602 | |
---|
| 3603 | c. `ulimit' has a `-l' option that reports the maximum amount of data that |
---|
| 3604 | may be locked into memory on 4.4BSD-based systems. |
---|
| 3605 | |
---|
| 3606 | ------------------------------------------------------------------------------ |
---|
| 3607 | This document details the changes between this version, bash-2.0-beta1, |
---|
| 3608 | and the previous version, bash-2.0-alpha4. |
---|
| 3609 | |
---|
| 3610 | 1. Changes to Bash |
---|
| 3611 | |
---|
| 3612 | a. A bug that sometimes caused traps to be ignored on signals the |
---|
| 3613 | shell treats specially was fixed. |
---|
| 3614 | |
---|
| 3615 | b. The internationalization code was changed to track the values of |
---|
| 3616 | LC_* variables and call setlocale() as appropriate. The TEXTDOMAIN |
---|
| 3617 | and TEXTDOMAINDIR variables are also tracked; changes cause calls |
---|
| 3618 | to textdomain() and bindtextdomain(), if available. |
---|
| 3619 | |
---|
| 3620 | c. A bug was fixed that sometimes caused double-quoted strings to be |
---|
| 3621 | parsed incorrectly. |
---|
| 3622 | |
---|
| 3623 | d. Changes were made so that the siglist code compiles correctly on |
---|
| 3624 | Solaris 2.5. |
---|
| 3625 | |
---|
| 3626 | e. Added `:' to the set of characters that cause word breaks for the |
---|
| 3627 | completion code so that pathnames in assignments to $PATH can be |
---|
| 3628 | completed. |
---|
| 3629 | |
---|
| 3630 | f. The `select' command was fixed to print $PS3 to stderr. |
---|
| 3631 | |
---|
| 3632 | g. Fixed an error in the manual page section describing the effect that |
---|
| 3633 | setting and unsetting GLOBIGNORE has on the setting of the `dotglob' |
---|
| 3634 | option. |
---|
| 3635 | |
---|
| 3636 | h. The time conversion code now uses CLK_TCK rather than CLOCKS_PER_SEC |
---|
| 3637 | on systems without gettimeofday() and resources. |
---|
| 3638 | |
---|
| 3639 | i. The getopt static variables are now initialized each time a subshell |
---|
| 3640 | is started, so subshells using `getopts' work right. |
---|
| 3641 | |
---|
| 3642 | j. A sign-extension bug that caused a possible security hole was fixed. |
---|
| 3643 | |
---|
| 3644 | k. The parser now reads characters between backquotes within a double- |
---|
| 3645 | quoted string as a single word, so double quotes in the backquoted |
---|
| 3646 | string don't terminate the enclosing double-quoted string. |
---|
| 3647 | |
---|
| 3648 | l. A bug that caused `^O' to work incorrectly when typed as the first |
---|
| 3649 | thing to an interactive shell was fixed. |
---|
| 3650 | |
---|
| 3651 | m. A rarely-exercised off-by-one error in the code that quotes variable |
---|
| 3652 | values was fixed. |
---|
| 3653 | |
---|
| 3654 | n. Some memory and file descriptor leaks encountered when running a |
---|
| 3655 | shell script that is executable but does not have a leading `#!' |
---|
| 3656 | were plugged. |
---|
| 3657 | |
---|
| 3658 | 2. Changes to Readline |
---|
| 3659 | |
---|
| 3660 | a. A bug that sometimes caused incorrect results when trying to read |
---|
| 3661 | typeahead on systems without FIONREAD was fixed. |
---|
| 3662 | |
---|
| 3663 | 3. New Features in Bash |
---|
| 3664 | |
---|
| 3665 | a. The command timing code now uses the value of the TIMEFORMAT variable |
---|
| 3666 | to format and display timing statistics. |
---|
| 3667 | |
---|
| 3668 | b. The `time' reserved word now accepts a `-p' option to force the |
---|
| 3669 | POSIX.2 output format. |
---|
| 3670 | |
---|
| 3671 | c. There are a couple of new and updated scripts to convert csh startup |
---|
| 3672 | files to bash format. |
---|
| 3673 | |
---|
| 3674 | d. There is a new builtin array variable: BASH_VERSINFO. The various |
---|
| 3675 | members hold the parts of the version information in BASH_VERSION, |
---|
| 3676 | plus the value of MACHTYPE. |
---|
| 3677 | |
---|
| 3678 | 4. New Features in Readline |
---|
| 3679 | |
---|
| 3680 | a. Setting LANG to `en_US.ISO8859-1' now causes readline to enter |
---|
| 3681 | eight-bit mode. |
---|
| 3682 | |
---|
| 3683 | ------------------------------------------------------------------------------ |
---|
| 3684 | This document details the changes between this version, bash-2.0-alpha4, |
---|
| 3685 | and the previous version, bash-2.0-alpha3. |
---|
| 3686 | |
---|
| 3687 | 1. Changes to Bash |
---|
| 3688 | |
---|
| 3689 | a. There is better detection of rsh connections on Solaris 2. |
---|
| 3690 | |
---|
| 3691 | b. Assignments to read-only variables preceding a command name are now |
---|
| 3692 | variable assignment errors. Variable assignment errors cause |
---|
| 3693 | non-interactive shells running in posix mode to exit. |
---|
| 3694 | |
---|
| 3695 | c. The word tokenizer was rewritten to handle nested quotes and pairs |
---|
| 3696 | ('', "", ``, ${...}, $(...), $[...], $'...', $"...", <(...), >(...)) |
---|
| 3697 | correctly. Some of the parameter expansion code was updated as a |
---|
| 3698 | consequence. |
---|
| 3699 | |
---|
| 3700 | d. A fix was made to `test' when given three arguments so that a binary |
---|
| 3701 | operator is checked for first, before checking that the first argument |
---|
| 3702 | is `!'. |
---|
| 3703 | |
---|
| 3704 | e. 2''>/dev/null is no longer equivalent to 2>/dev/null. |
---|
| 3705 | |
---|
| 3706 | f. Parser error messages were regularized, and in most cases the name of |
---|
| 3707 | the shell script being read by a non-interactive shell is not printed |
---|
| 3708 | twice. |
---|
| 3709 | |
---|
| 3710 | g. A fix was made to the completion code so that it no longer removes the |
---|
| 3711 | text the user typed in some cases. |
---|
| 3712 | |
---|
| 3713 | h. The special glibc `getopt' environment variable is no longer put into |
---|
| 3714 | the environment on machines with small values of ARG_MAX. |
---|
| 3715 | |
---|
| 3716 | i. The expansion of ${...} now follows the POSIX.2 rules for finding the |
---|
| 3717 | closing `}'. |
---|
| 3718 | |
---|
| 3719 | j. The shell no longer displays spurious status messages for background |
---|
| 3720 | jobs in shell scripts that complete successfully when the script is |
---|
| 3721 | run from a terminal. |
---|
| 3722 | |
---|
| 3723 | k. `shopt -o' now correctly updates $SHELLOPTS. |
---|
| 3724 | |
---|
| 3725 | l. A bug that caused the $PATH searching code to return a non-executable |
---|
| 3726 | file even when an executable file with the same name appeared later in |
---|
| 3727 | $PATH was fixed. |
---|
| 3728 | |
---|
| 3729 | m. The shell now does tilde expansions on unquoted `:~' in assignment |
---|
| 3730 | statements when not in posix mode. |
---|
| 3731 | |
---|
| 3732 | n. Variable assignment errors when a command consists only of assignments |
---|
| 3733 | now cause non-interactive shells to exit when in posix mode. |
---|
| 3734 | |
---|
| 3735 | o. If the variable in a `for' or `select' command is read-only, or not a |
---|
| 3736 | legal shell identifier, a variable assignment error occurs. |
---|
| 3737 | |
---|
| 3738 | p. `test' now handles `-a' and `-o' as binary operators when three arguments |
---|
| 3739 | are supplied, and correctly parses `( word )' as equivalent to `word'. |
---|
| 3740 | |
---|
| 3741 | q. `test' was fixed so that file names of the form /dev/fd/NN mean the same |
---|
| 3742 | thing on all systems, even Linux. |
---|
| 3743 | |
---|
| 3744 | r. Fixed a bug in the globbing code that caused patterns with multiple |
---|
| 3745 | consecutive `*'s to not be matched correctly. |
---|
| 3746 | |
---|
| 3747 | s. Fixed a bug that caused $PS2 to not be printed when an interactive shell |
---|
| 3748 | not using readline is reading a here document. |
---|
| 3749 | |
---|
| 3750 | t. Fixed a bug that caused history expansion to be performed inappropriately |
---|
| 3751 | when a single-quoted string spanned more than one line. |
---|
| 3752 | |
---|
| 3753 | u. `getopts' now checks that the variable name passed by the user as the |
---|
| 3754 | second argument is a legal shell identifier and that the variable is |
---|
| 3755 | not read-only. |
---|
| 3756 | |
---|
| 3757 | v. Fixed `getopts' to obey POSIX.2 rules for setting $OPTIND when it |
---|
| 3758 | encounters an error. |
---|
| 3759 | |
---|
| 3760 | w. Fixed `set' to display variable values in a form that can be re-read. |
---|
| 3761 | |
---|
| 3762 | x. Fixed a bug in the code that keeps track of whether or not local variables |
---|
| 3763 | have been declared at the current level of function nesting. |
---|
| 3764 | |
---|
| 3765 | y. Non-interactive shells in posix mode now exit if the name in a function |
---|
| 3766 | declaration is not a legal identifier. |
---|
| 3767 | |
---|
| 3768 | z. The job control code now ignores stopped children when the shell is not |
---|
| 3769 | interactive. |
---|
| 3770 | |
---|
| 3771 | aa. The `cd' builtin no longer attempts spelling correction on the directory |
---|
| 3772 | name if the shell is not interactive, regardless of the setting of the |
---|
| 3773 | `cdspell' option. |
---|
| 3774 | |
---|
| 3775 | bb. Some OS-specific changes were made for SCO 3.2v[45] and AIX 4.2. |
---|
| 3776 | |
---|
| 3777 | cc. `time' now prints its output to stderr, as POSIX.2 specifies. |
---|
| 3778 | |
---|
| 3779 | 2. Fixes to Readline |
---|
| 3780 | |
---|
| 3781 | a. After printing possible completions, all lines of a multi-line prompt |
---|
| 3782 | are redisplayed. |
---|
| 3783 | |
---|
| 3784 | b. Some changes were made to the terminal handling code in rltty.c to |
---|
| 3785 | work around AIX 4.2 bugs. |
---|
| 3786 | |
---|
| 3787 | 3. New Features in Bash |
---|
| 3788 | |
---|
| 3789 | a. There is a new loadable builtin: sprintf, with calling syntax |
---|
| 3790 | sprintf var format [args] |
---|
| 3791 | This provides an easy way to simulate ksh left- and right-justified |
---|
| 3792 | variable values. |
---|
| 3793 | |
---|
| 3794 | b. The expansions of \h and \H in prompt strings were swapped. \h now |
---|
| 3795 | expands to the hostname up to the first `.', as in bash-1.14. |
---|
| 3796 | |
---|
| 3797 | 4. New Features in Readline |
---|
| 3798 | |
---|
| 3799 | a. The bash-1.14 behavior when ^M is typed while doing an incremental |
---|
| 3800 | search was restored. ^J may now be used to terminate the search without |
---|
| 3801 | accepting the line. |
---|
| 3802 | |
---|
| 3803 | b. There is a new bindable variable: disable-completion. This inhibits |
---|
| 3804 | word completion and causes the completion character to be inserted as |
---|
| 3805 | if it had been bound to self-insert. |
---|
| 3806 | |
---|
| 3807 | ------------------------------------------------------------------------------ |
---|
| 3808 | This document details the changes between this version, bash-2.0-alpha3, |
---|
| 3809 | and the previous version, bash-2.0-alpha2. |
---|
| 3810 | |
---|
| 3811 | There is now a file `COMPAT' included in the distribution that lists the |
---|
| 3812 | user-visible incompatibilities between 1.14 and 2.0. |
---|
| 3813 | |
---|
| 3814 | 1. Changes to Bash |
---|
| 3815 | |
---|
| 3816 | a. Some work was done so that word splitting of the rhs of assignment |
---|
| 3817 | statements conforms more closely to historical practice. |
---|
| 3818 | |
---|
| 3819 | b. A couple of errant memory frees were fixed. |
---|
| 3820 | |
---|
| 3821 | c. A fix was made to the test builtin so it recognizes `<' and `>' as |
---|
| 3822 | binary operators. |
---|
| 3823 | |
---|
| 3824 | d. The GNU malloc in lib/malloc/malloc.c now scrambles memory as it's |
---|
| 3825 | allocated and freed. This is to catch callers that refer to freed |
---|
| 3826 | memory or assume something about newly-allocated memory. |
---|
| 3827 | |
---|
| 3828 | e. Fixed a problem with conversion to 12-hour time in the prompt |
---|
| 3829 | expansion code. |
---|
| 3830 | |
---|
| 3831 | f. Fixed a problem with configure's argument parsing order. Now you can |
---|
| 3832 | correctly turn on specific options after using --enable-minimal-config. |
---|
| 3833 | |
---|
| 3834 | g. The configure script now automatically disables the use of GNU malloc |
---|
| 3835 | on systems where it's appropriate (better than having people read the |
---|
| 3836 | NOTES file and do it manually). |
---|
| 3837 | |
---|
| 3838 | h. There are new prompt expansions (\v and \V) to insert version information |
---|
| 3839 | into the prompt strings. |
---|
| 3840 | |
---|
| 3841 | i. The default prompt string now includes the version number. |
---|
| 3842 | |
---|
| 3843 | j. Most of the builtins that take no options were changed to use the |
---|
| 3844 | internal getopt so they can produce proper error messages for -? |
---|
| 3845 | and incorrect options. |
---|
| 3846 | |
---|
| 3847 | k. Some system-specific changes were made for SVR4.2 and Solaris 2.5. |
---|
| 3848 | |
---|
| 3849 | l. Bash now uses PATH_MAX instead of MAXPATHLEN and NAME_MAX instead of |
---|
| 3850 | MAXNAMLEN. |
---|
| 3851 | |
---|
| 3852 | m. A couple of problems caused by uninitialized variables were fixed. |
---|
| 3853 | |
---|
| 3854 | n. There are a number of new loadable builtin examples: logname, basename, |
---|
| 3855 | dirname, tty, pathchk, tee, head, and rmdir. All of these conform to |
---|
| 3856 | POSIX.2. |
---|
| 3857 | |
---|
| 3858 | o. Bash now notices changes in TZ and calls tzset() if present, so |
---|
| 3859 | changing TZ will alter the time printed by prompt expansions. |
---|
| 3860 | |
---|
| 3861 | p. The source was reorganized a bit so I don't have to wait so long for |
---|
| 3862 | some files to compile, and to facilitate the creation of a `shell |
---|
| 3863 | library' at some future point. |
---|
| 3864 | |
---|
| 3865 | q. Bash no longer turns off job control if called as `sh', since the |
---|
| 3866 | POSIX.2 spec includes job control as a standard feature. |
---|
| 3867 | |
---|
| 3868 | r. `bash -o posix' now works as intended. |
---|
| 3869 | |
---|
| 3870 | s. Fixed a problem with the completion code: when completing a filename |
---|
| 3871 | that contained globbing characters, if show-all-if-ambiguous was set, |
---|
| 3872 | the completion code would remove the user's text. |
---|
| 3873 | |
---|
| 3874 | t. Fixed ulimit so that (hopefully) the full range of limits is available |
---|
| 3875 | on HPUX systems. |
---|
| 3876 | |
---|
| 3877 | u. A new `shopt' option (`hostcomplete') enables and disables hostname |
---|
| 3878 | completion. |
---|
| 3879 | |
---|
| 3880 | v. The shell no longer attempts to save the history on an abort(), |
---|
| 3881 | which is usually called by programming_error(). |
---|
| 3882 | |
---|
| 3883 | w. The `-s' option to `fc' was changed to echo the command to be executed |
---|
| 3884 | to stderr instead of stdout. |
---|
| 3885 | |
---|
| 3886 | x. If the editor invoked by `fc -e' exits with a non-zero status, no |
---|
| 3887 | commands are executed. |
---|
| 3888 | |
---|
| 3889 | y. Fixed a bug that made the shopt `histverify' option work incorrectly. |
---|
| 3890 | |
---|
| 3891 | z. There is a new variable `MACHTYPE' whose value is the GNU-style |
---|
| 3892 | `cpu-company-system' system description as set by configure. (The |
---|
| 3893 | values of MACHTYPE and HOSTTYPE should really be swapped.) |
---|
| 3894 | |
---|
| 3895 | aa. The `ulimit' builtin now allows the maximum virtual memory size to be |
---|
| 3896 | set via setrlimit(2) if RLIMIT_VMEM is defined. |
---|
| 3897 | |
---|
| 3898 | bb. `bash -nc 'command'' no longer runs `command'. |
---|
| 3899 | |
---|
| 3900 | 2. Changes to Readline |
---|
| 3901 | |
---|
| 3902 | a. Fixed a typo in the code that checked for FIONREAD in input.c. |
---|
| 3903 | |
---|
| 3904 | b. Fixed a bug in the code that outputs keybindings, so things like C-\ |
---|
| 3905 | are quoted properly. |
---|
| 3906 | |
---|
| 3907 | c. Fixed a bug in the inputrc file parsing code to handle the problems |
---|
| 3908 | caused by inputrc files created from the output of `bind -p' in |
---|
| 3909 | previous versions of bash. The problem was due to the bug fixed |
---|
| 3910 | in item b above. |
---|
| 3911 | |
---|
| 3912 | d. Readline no longer turns off the terminal's meta key, and turns it on |
---|
| 3913 | once the first time it's called. |
---|
| 3914 | |
---|
| 3915 | ------------------------------------------------------------------------------ |
---|
| 3916 | This file documents the changes between this version, bash-2.0-alpha2, |
---|
| 3917 | and the previous version, bash-2.0-alpha. |
---|
| 3918 | |
---|
| 3919 | 1. Changes to Bash |
---|
| 3920 | |
---|
| 3921 | a. The shell no longer thinks directories are executable. |
---|
| 3922 | |
---|
| 3923 | b. `disown' has a new option, `h', which inhibits the resending of SIGHUP |
---|
| 3924 | but does not remove the job from the jobs table. |
---|
| 3925 | |
---|
| 3926 | c. The varargs functions in error.c now use ANSI-C `stdarg' if available. |
---|
| 3927 | |
---|
| 3928 | d. The build process now treats the `build version' in .build as local to |
---|
| 3929 | the build directory, so different versions built from the same source |
---|
| 3930 | tree have different `build versions'. |
---|
| 3931 | |
---|
| 3932 | e. Some problems with the grammar have been fixed. (It used `list' in a few |
---|
| 3933 | productions where `compound_list' was needed. A `list' must be terminated |
---|
| 3934 | with a newline or semicolon; a `compound_list' need not be.) |
---|
| 3935 | |
---|
| 3936 | f. A fix was made to keep `wait' from hanging when waiting for all background |
---|
| 3937 | jobs. |
---|
| 3938 | |
---|
| 3939 | g. `bash --help' now writes its output to stdout, like the GNU Coding Standards |
---|
| 3940 | specify, and includes the machine type (the value of MACHTYPE). |
---|
| 3941 | |
---|
| 3942 | h. `bash --version' now prints more information and exits successfully, like |
---|
| 3943 | the GNU Coding Standards specify. |
---|
| 3944 | |
---|
| 3945 | i. The output of `time' and `times' now prints fractional seconds with three |
---|
| 3946 | places after the decimal point. |
---|
| 3947 | |
---|
| 3948 | j. A bug that caused process substitutions to screw up the pipeline printed |
---|
| 3949 | by `jobs' was fixed. |
---|
| 3950 | |
---|
| 3951 | k. Fixes were made to the code that implements $'...' and $"..." so they |
---|
| 3952 | work as documented. |
---|
| 3953 | |
---|
| 3954 | l. The process substitution code now opens named pipes for reading with |
---|
| 3955 | O_NONBLOCK to avoid hanging. |
---|
| 3956 | |
---|
| 3957 | m. Fixes were made to the trap code so the shell cleans up correctly if the |
---|
| 3958 | trap command contains a `return' and we're executing a function or |
---|
| 3959 | sourcing a script with `.'. |
---|
| 3960 | |
---|
| 3961 | n. Fixes to doc/Makefile.in so that it doesn't try to remake all of the |
---|
| 3962 | documentation (ps, dvi, etc.) on a `make install'. |
---|
| 3963 | |
---|
| 3964 | o. Fixed an auto-increment error that caused bash -c args to sometimes dump |
---|
| 3965 | core. |
---|
| 3966 | |
---|
| 3967 | p. Fixed a bug that caused $HISTIGNORE to fail when the history line |
---|
| 3968 | contained globbing characters. |
---|
| 3969 | |
---|
| 3970 | 2. Changes to Readline |
---|
| 3971 | |
---|
| 3972 | a. There is a new string variable, rl_library_version, available for use by |
---|
| 3973 | applications. The current value is "2.1". |
---|
| 3974 | |
---|
| 3975 | b. A bug encountered when expand-tilde was enabled and file completion was |
---|
| 3976 | attempted on a word beginning with `~/' was fixed. |
---|
| 3977 | |
---|
| 3978 | c. A slight change was made to the incremental search termination behavior. |
---|
| 3979 | ESC still terminates the search, but if input is pending or arrives |
---|
| 3980 | within 0.1 seconds (on systems with select(2)), it is used as a prefix |
---|
| 3981 | character. This is intented to allow users to terminate searches with |
---|
| 3982 | the arrow keys and get the behavior they expect. |
---|