From: Joost Kremers <joostkremers@fastmail.fm>
To: 14191@debbugs.gnu.org
Subject: bug#14191: 24.3.50; (buffer-list) returns list with non-current buffer as its first element
Date: Fri, 12 Apr 2013 14:34:05 +0200 [thread overview]
Message-ID: <87a9p4lygy.fsf@fastmail.fm> (raw)
(buffer-list) returns a list of buffers, but the first buffer in the
list is not the current buffer.
Recipe to reproduce:
- start Emacs with `emacs -Q'
- M-x ielm RET
- at the prompt, type (buffer-list)
Output (list of buffers wrapped for better readability):
,----
| *** Welcome to IELM *** Type (describe-mode) for help.
| ELISP> (buffer-list)
| (#<buffer *scratch*> #<buffer *Minibuf-1*> #<buffer *Minibuf-0*>
| #<buffer *Messages*> #<buffer *code-conversion-work*>
| #<buffer *Echo Area 0*> #<buffer *Echo Area 1*> #<buffer *ielm*>)
`----
Although the *ielm* buffer is current, the first buffer in the list is
the *scratch* buffer.
Doing the same thing in an Emacs Debian (Ubuntu) snapshot from a few
weeks ago:
,----
| *** Welcome to IELM *** Type (describe-mode) for help.
| ELISP> (buffer-list)
| (#<buffer *ielm*> #<buffer *scratch*> #<buffer *Minibuf-1*>
| #<buffer *Minibuf-0*> #<buffer *Messages*>
| #<buffer *code-conversion-work*> #<buffer *Echo Area 0*>
| #<buffer *Echo Area 1*>)
|
| ELISP> (emacs-version)
| "GNU Emacs 24.3.50.1 (i686-pc-linux-gnu)\n of 2013-03-19 on gold, modified by Debian"
`----
Here, the output of buffer-list has the *ielm* buffer as its first
element. (Note, I've included the output of (emacs-version) here: this
is obviously *not* the version in which the bug occurs. That version is
given below.)
Note that I'm just using the *ielm* buffer to show the output of
(buffer-list). It has nothing to do with the bug itself. Using `M-x eval
RET (buffer-list) RET' gives the same result, as does using
(buffer-list) in Elisp. (Which is how I ran into the bug: swbuff.el from
http://emhacks.sourceforge.net/ stopped working properly. I traced the
problem to this changed behaviour of buffer-list.)
HTH
Joost Kremers
In GNU Emacs 24.3.50.1 (i686-pc-linux-gnu, GTK+ Version 3.6.0)
of 2013-04-11 on fermium, modified by Debian
(emacs-snapshot package, version 2:20130410-1~ppa1~quantal1)
Windowing system distributor `The X.Org Foundation', version 11.0.11300000
System Description: Ubuntu 12.10
Configured using:
`configure --build i686-linux-gnu --host i686-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/24.3.50/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/24.3.50/site-lisp:/usr/share/emacs/site-lisp
--without-compress-info --with-crt-dir=/usr/lib/i386-linux-gnu/
--with-x=yes --with-x-toolkit=gtk3 --with-imagemagick=yes
CFLAGS='-DDEBIAN -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2'
CPPFLAGS='-D_FORTIFY_SOURCE=2' LDFLAGS='-g -Wl,--as-needed
-znocombreloc''
Important settings:
value of $LC_MONETARY: en_US.UTF-8
value of $LC_NUMERIC: en_US.UTF-8
value of $LC_TIME: en_US.UTF-8
value of $LANG: en_GB.UTF-8
locale-coding-system: utf-8-unix
default enable-multibyte-characters: t
Major mode: IELM
Minor modes in effect:
tooltip-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
line-number-mode: t
transient-mark-mode: t
Recent input:
M-x i e l m <return> ( b u f f e r - l i s t ) <return>
<help-echo> <help-echo> <help-echo> <up> <up> <up>
<up> C-a a <backspace> <up> <left> <left> <left> <left>
<left> <left> <left> C-SPC <down> <down> <down> <down>
<down> <down> M-w ( e m a c s - v e r s i o n ) <return>
<help-echo> <help-echo> <up> <up> <up> <right> C-SPC
<down> <down> M-w C-x C-g M-x e m a c <tab> b u <tab>
<M-backspace> <M-backspace> r e p <tab> o r <tab>
<return>
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Mark set
End of buffer
Mark set
Making completion list...
Load-path shadows:
None found.
Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util
mail-prsvr mail-utils help-mode easymenu ielm pp comint ansi-color ring
time-date tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd
tool-bar dnd fontset image regexp-opt fringe tabulated-list newcomment
lisp-mode register page menu-bar rfn-eshadow timer select scroll-bar
mouse jit-lock font-lock syntax facemenu font-core frame cham georgian
utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean
japanese hebrew greek romanian slovak czech european ethiopic indian
cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev
minibuffer loaddefs button faces cus-face macroexp files text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote make-network-process dbusbind inotify
dynamic-setting system-font-setting font-render-setting move-toolbar gtk
x-toolkit x multi-tty emacs)
--
Joost Kremers
Life has its moments
next reply other threads:[~2013-04-12 12:34 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-12 12:34 Joost Kremers [this message]
2013-04-12 17:32 ` bug#14191: 24.3.50; (buffer-list) returns list with non-current buffer as its first element Stefan Monnier
2013-04-12 17:51 ` bug#14191: 24.3.50; (buffer-list) returns list with non-current buffer as its firstelement Drew Adams
2013-04-13 8:02 ` martin rudalics
2013-04-13 15:08 ` Drew Adams
2013-04-15 7:10 ` martin rudalics
2013-04-12 18:59 ` bug#14191: 24.3.50; (buffer-list) returns list with non-current buffer as its first element Andreas Schwab
2013-04-14 12:46 ` Joost Kremers
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