Report bug about Alpine unable to view HTML documents

[tabbott]

Original report from Quentin:

My .mailcap is empty. The only thing that appears to be relevant in my
.pinerc is the line:

url-viewers=/usr/athena/bin/htmlview,

/usr/bin/links

but /usr/bin/links works correctly, and an strace suggests that
/usr/bin/sensible-browser is what's actually being invoked.

The steps to reproduce in my account are:

• look at a message that has an HTML attachment
• Press . to move to the list of message parts
• Select an HTML part
• Press enter
• Answer yes to "View selected Attachment?"

I get a message "VIEWER command launched", but I never actually get an
HTML viewer.

Greg Price reports that he's reproduced this and it is likely an upstream bug; we should confirm that and report it to Debian.