Re: [tassilo@member.fsf.org: Weird article scrolling in Gnus with customized face]

[storm@cua.dk (Kim F. Storm)]

Richard Stallman <rms@gnu.org> writes:

> Would someone please fix this and ack?

The problem could be that the last line is only partially visible, and
we have a complex/messy piece of code to handle this in the redisplay
code by recenting point.

If that is the case, I would DEFINITELY NOT try to fix this before the
release, at the risk of making even bigger problems in other cases.

>
> From: Tassilo Horn <tassilo@member.fsf.org>
> Subject: Weird article scrolling in Gnus with customized face
> To: emacs-pretest-bug@gnu.org
> Date: Tue, 24 Oct 2006 18:03:21 +0200
>
> Ok, I start up Gnus. Now, if I view an article by hitting RET
> (`gnus-summary-scroll-up') on it in *Summary*, I get the following
> behavior:
>
>   - as long as there are visible headers (Subject, From, etc.) on top of
>     the buffer, pressing RET scrolls exactly one line as it should be.
>
>   - when the last visible header scrolled out of the visible buffer part
>     pressing RET results in scrolling one entire page like SPACE
>     (`gnus-summary-next-page') does.
>
>   - the same applies to M-RET
>
> I tried it on a test account, and all worked fine. But I was able to
> locate the source of the problem: One customized face is causing the
> trouble!
>
> (custom-set-faces
>  '(mode-line ((((class color) (min-colors 88)) (:background "darkred" :foreground "grey" :box (:line-width 1 :style released-button) :height 0.8 :family "helvetica")))))
>
> If I commend out this line, scrolling works as it should. With this line
> I can reproduce the bug in both No Gnus and 5-11.
>
>
> In GNU Emacs 22.0.50.1 (i686-pc-linux-gnu, GTK+ Version 2.10.6)
>  of 2006-10-24 on baldur
> X server distributor `The X.Org Foundation', version 11.0.70101000
> configured using `configure '--prefix=/usr' '--host=i686-pc-linux-gnu' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--datadir=/usr/share' '--sysconfdir=/etc' '--localstatedir=/var/lib' '--program-suffix=.emacs-22.0.50' '--without-carbon' '--with-x' '--with-xpm' '--with-toolkit-scroll-bars' '--with-jpeg' '--with-tiff' '--with-gif' '--with-png' '--with-x-toolkit=gtk' '--build=i686-pc-linux-gnu' 'CFLAGS=-O2' 'build_alias=i686-pc-linux-gnu' 'host_alias=i686-pc-linux-gnu''
>
> Important settings:
>   value of $LC_ALL: de_DE.utf8
>   value of $LC_COLLATE: nil
>   value of $LC_CTYPE: nil
>   value of $LC_MESSAGES: nil
>   value of $LC_MONETARY: nil
>   value of $LC_NUMERIC: nil
>   value of $LC_TIME: nil
>   value of $LANG: de_DE.utf8
>   locale-coding-system: utf-8
>   default-enable-multibyte-characters: t
>
> Major mode: Emacs-Lisp
>
> Minor modes in effect:
>   eldoc-mode: t
>   recentf-mode: t
>   desktop-save-mode: t
>   show-paren-mode: t
>   semantic-idle-scheduler-mode: t
>   tooltip-mode: t
>   mouse-wheel-mode: t
>   menu-bar-mode: t
>   file-name-shadow-mode: t
>   global-font-lock-mode: t
>   font-lock-mode: t
>   unify-8859-on-encoding-mode: t
>   utf-translate-cjk-mode: t
>   auto-compression-mode: t
>   column-number-mode: t
>   line-number-mode: t
>   transient-mark-mode: t
>   abbrev-mode: t
>
> Recent input:
> y <backspace> n y w a y s . C-x 1 <up> <up> <up> <up> 
> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
> <up> <up> <up> <down> <down> <down> <down> <down> <down> 
> <down> <down> <down> <down> <up> <up> <down> <down> 
> <down> <down> <down> <down> <down> <down> <down> <down> 
> <down> C-c C-c y q l s C-x 1 C-x b <right> <return> 
> C-x C-s <up> <down> <left> <left> <left> <left> <left> 
> M-x e m <tab> <backspace> <backspace> b u g <tab> <backspace> 
> <backspace> <backspace> r e p <tab> p <backspace> o 
> <tab> r <tab> <tab> b <tab> <return>
>
> Recent messages:
> Deleting article /home/heimdall/News/drafts/drafts/3 in drafts...
> No more unread newsgroups
> Wrote /home/heimdall/.newsrc
> Saving /home/heimdall/.newsrc.eld...
> Saving file /home/heimdall/.newsrc.eld...
> Wrote /home/heimdall/.newsrc.eld
> Saving /home/heimdall/.newsrc.eld...done
> (No changes need to be saved)
> Making completion list... [4 times]
> Loading emacsbug...done
>
>
> _______________________________________________
> emacs-pretest-bug mailing list
> emacs-pretest-bug@gnu.org
> http://lists.gnu.org/mailman/listinfo/emacs-pretest-bug
> ----------
>

-- 
Kim F. Storm <storm@cua.dk> http://www.cua.dk