Archives render attachments as first-class messages (was: docs patches for precmd hooks and $?, and vcs_info)

[Daniel Shahaf <d.s@daniel.shahaf.name>]

Daniel Shahaf wrote on Wed, Apr 14, 2021 at 15:18:22 +0000:
> Attached as 4/8.

To people reading the parent message in the https://www.zsh.org/mla/
archives, note its attachments don't show up as attachments but as
first-order messages, here:

1/8 https://www.zsh.org/mla/workers/2021/msg00793.html
2/8 https://www.zsh.org/mla/workers/2021/msg00794.html
3/8 https://www.zsh.org/mla/workers/2021/msg00795.html
4/8 https://www.zsh.org/mla/workers/2021/msg00796.html
5/8 https://www.zsh.org/mla/workers/2021/msg00797.html
6/8 https://www.zsh.org/mla/workers/2021/msg00798.html
7/8 https://www.zsh.org/mla/workers/2021/msg00799.html
8/8 https://www.zsh.org/mla/workers/2021/msg00800.html

That's presumably because the attachments look like email messages
with From_ lines.

----

We should fix this for new messages.  We're using mhonarc 2.6.24 from
FreeBSD ports, invoked as shown hereunder.  If anyone knows the fix off
the top of their heads, please let us know (offlist is fine), thanks.

	/usr/local/bin/mhonarc \
		-quiet \
		-definevar listlocalpartsansprefix=${listlocalpart#zsh-} \
		-title  "${title}" \
		-ttitle "${title}" \
		-tlevels 9999 \
		-rcfile /usr/local/www/mhonarc.zsh \
		-add \
		-- "$munged_tmpfile" \

Cheers,

Daniel