Tab-complete of nicknames in rcirc includes some prefix characters

[Björn Lindström]

This bug report will be sent to the Free Software Foundation,
not to your local site managers!
Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the address@hidden mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

If a network uses prefix characters in NAMES besides address@hidden then
tab-completes and some other features include them erroneously.

I think rcirc needs to read the 005 (ISUPPORT) response as specified by
http://www.irc.org/tech_docs/draft-brocklesby-irc-isupport-03.txt
and include a per-server setting in rcirc-user*nick.

I don't know how best to start coding that in. If you can give me
pointers, I'll try.

In GNU Emacs 22.0.50.1 (i486-pc-linux-gnu)
 of 2005-12-21 on pacem, modified by Debian
configured using `configure '--build' 'i486-linux-gnu' '--host' 
'i486-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' 
'--libexecdir=/usr/lib' '--localstatedir=/var' '--infodir=/usr/share/info' 
'--mandir=/usr/share/man' '--with-pop=yes' 
'--enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/22.0.50/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/22.0.50/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/22.0.50/leim'
 '--with-x=no' 'CFLAGS=-DDEBIAN -g -Wno-pointer-sign -O2' 
'build_alias=i486-linux-gnu' 'host_alias=i486-linux-gnu''

Major mode: rcirc