funny problems with nnmail-cache and split-fancy-with-parent

[Josh Huber <huber@alum.wpi.edu>]

Recently, I decided I should start using
nnmail-split-fancy-with-parent again.  I added:

	(: nnmail-split-fancy-with-parent)

to my nnmail-split-fancy rules (at the top), and realized a couple
hours later that a bunch of messages were being stored in mail.misc.
I don't use mail.misc, but when I looked in the mail/misc folder there
were something like 100 messages there...presumably due to the
addition of this rule.

Why could that be?  taking a look at ~/.nnmail-cache a few lines look
like this (btw, this is with nnmail-split-fancy-with-parent OFF):

<OF5FE6F041.9810635D-ON86256BAD.00692342@norlight.com>	misc
<E8F83D6D2A6AD3118E0300902786A20502371482@NTEX>	misc
<3CD1933E.3030600@computer.org>	misc
<20020502193559.GA2395@watz.ch>	misc
<20020502213828.A11136@lucretia.debian.net>	misc
<20020502194229.02F623F489@hydrogen.ruby-lang.org>	misc

funny because nothing was actually being split there, but the cache
indicated that messages *were* being split there.

For example:

find . -name .overview | xargs grep OF5FE6F041.9810635D-ON86256BAD.00692342@norlight.com
./lists/debian/private/.overview [...]
 find . -name .overview | xargs grep  E8F83D6D2A6AD3118E0300902786A20502371482@NTEX
./lists/linuxppc/embedded/.overview [...]

[etc, etc -- none of those messages are being sent to mail.misc]

Anyone know what's going on here?

There's another problem here, I think.  About 100 messages were
sitting in mail/misc, but the group still indicated that there were 3
messages in it (3 very old messages).  M-g, C-u RET, etc didn't update
the number or let me see the messages.  not only that, but after
exiting Gnus and starting it back up all messages in mail.misc were
deleted (save for the original 3 which like to stick around for some
reason :)

Fortunately I had already skimmed the messages using less before this
happened and there was nothing important in them.

So, it seems I've stumbled across 2 problems -- the cache file
indicates an incorrect group name where a messages was filed, and when
nnmail-split-fancy-with-parent stored the new messages acording to the
cache file, the group information (low/high message numbers) wasn't
updated. (or something like that...I didn't get a chance to see what
happened).

Anyone use this stuff?  I'll start looking at the code to see what
went wrong in the meantime.

Thanks,

-- 
Josh Huber