bug#5214: 23.1; M-x C-p C-p ... showing strange history elements

bug#5214: 23.1; M-x C-p C-p ... showing strange history elements

[Alfred M. Szmidt]

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 bug-gnu-emacs@gnu.org mailing list,
and to the gnu.emacs.bug news group.

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


M-x C-p C-p ... shows strange entries, even with -Q, e.g.

quail-show-keyboard-layout
makefile-makepp-mode
plain-tex-mode
shell-dynamic-complete-command
update-autoloads-from-directories
php-mode
...

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/usr/share/emacs/23.1/etc/DEBUG for instructions.


In GNU Emacs 23.1.1 (i386-redhat-linux-gnu)
 of 2009-12-02 on x86-7.fedora.phx.redhat.com
configured using `configure  '--build=i386-redhat-linux-gnu' '--host=i386-redhat-linux-gnu' '--target=i686-redhat-linux-gnu' '--program-prefix=' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc' '--datadir=/usr/share' '--includedir=/usr/include' '--libdir=/usr/lib' '--libexecdir=/usr/libexec' '--localstatedir=/var' '--sharedstatedir=/var/lib' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--without-x' 'build_alias=i386-redhat-linux-gnu' 'host_alias=i386-redhat-linux-gnu' 'target_alias=i686-redhat-linux-gnu' 'CFLAGS=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables''

Important settings:
  value of $LC_ALL: nil
  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: en_US.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  gpm-mouse-mode: t
  rcirc-track-minor-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

Recent input:
[ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B 
ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC 
[ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B 
ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC 
[ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B 
ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC 
[ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B 
ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC 
[ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B 
ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC [ B ESC 
[ B ESC [ B ESC [ B C-g ESC x ESC [ A C-e ESC [ B ESC 
[ A C-g ESC x C-h k ESC [ B C-h k ESC [ A C-h k ESC 
[ B C-h k ESC [ A C-h k C-p C-h k C-n C-p C-n C-n C-e 
ESC [ A ESC [ A ESC [ B ESC [ A ESC [ B C-a C-k C-g 
C-g ESC x e m TAB a TAB r TAB DEL b u TAB DEL TAB DEL 
ESC DEL ESC DEL ESC DEL ESC DEL r e p o TAB r TAB 
RET

Recent messages:
Wrote /home/ams/loaddefs.el
Loading /home/ams/loaddefs.el (source)...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Quit
goto-history-element: Beginning of history; no preceding item
Quit
Type C-x 1 to delete the help window.
goto-history-element: Beginning of history; no preceding item [2 times]
Quit [2 times]
Making completion list... [2 times]

bug#5214: 23.1; M-x C-p C-p ... showing strange history elements

[Juri Linkov]

> M-x C-p C-p ... shows strange entries, even with -Q, e.g.
>
> quail-show-keyboard-layout
> makefile-makepp-mode
> plain-tex-mode
> shell-dynamic-complete-command
> update-autoloads-from-directories
> php-mode
> ...

Do you mean you see unsorted commands while typing `M-x M-n M-n ...'?

-- 
Juri Linkov
http://www.jurta.org/emacs/

bug#5214: 23.1; M-x C-p C-p ... showing strange history elements

[Alfred M. Szmidt]

   > M-x C-p C-p ... shows strange entries, even with -Q, e.g.
   >
   > quail-show-keyboard-layout
   > makefile-makepp-mode
   > plain-tex-mode
   > shell-dynamic-complete-command
   > update-autoloads-from-directories
   > php-mode
   > ...

   Do you mean you see unsorted commands while typing `M-x M-n M-n ...'?

I meant that I never ran those commands, so they shouldn't show up in
the minibuffer history, yet they do.

bug#5214: 23.1; M-x C-p C-p ... showing strange history elements

[Juri Linkov]

>    > M-x C-p C-p ... shows strange entries, even with -Q, e.g.
>    >
>    > quail-show-keyboard-layout
>    > makefile-makepp-mode
>    > plain-tex-mode
>    > shell-dynamic-complete-command
>    > update-autoloads-from-directories
>    > php-mode
>    > ...
>
>    Do you mean you see unsorted commands while typing `M-x M-n M-n ...'?
>
> I meant that I never ran those commands, so they shouldn't show up in
> the minibuffer history, yet they do.

They don't show up in the minibuffer history when you type
`M-x M-p M-p ...'.

-- 
Juri Linkov
http://www.jurta.org/emacs/

bug#5214: 23.1; M-x C-p C-p ... showing strange history elements

[Alfred M. Szmidt]

M-x M-n M-n ... shows random entries that were never called by the
user; even when using -Q and first thing after start up when the
mini-buffer history is supposed to be empty.  That is a bug, or
undocumented feature.

Sorry if I was unclear.

bug#5214: 23.1; M-x C-p C-p ... showing strange history elements

[Juri Linkov]

> M-x M-n M-n ... shows random entries that were never called by the
> user; even when using -Q and first thing after start up when the
> mini-buffer history is supposed to be empty.  That is a bug, or
> undocumented feature.
>
> Sorry if I was unclear.

I agree that pushing completions to M-n of M-x is confusing.
I don't find this feature useful.

-- 
Juri Linkov
http://www.jurta.org/emacs/

bug#5214: 23.1; M-x C-p C-p ... showing strange history elements

[Andreas Schwab]

Juri Linkov <juri@jurta.org> writes:

> I agree that pushing completions to M-n of M-x is confusing.
> I don't find this feature useful.

Then set minibuffer-default-add-function to nil.

Andreas.

-- 
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

bug#5214: 23.1; M-x C-p C-p ... showing strange history elements

[Juri Linkov]

>> I agree that pushing completions to M-n of M-x is confusing.
>> I don't find this feature useful.
>
> Then set minibuffer-default-add-function to nil.

I think `minibuffer-default-add-completions' as the value of
`minibuffer-default-add-function' is useful for a list of buffers
for buffer-reading commands because there are ordered by recency.

For most other commands, completions are unordered, so perhaps we should
set `minibuffer-default-add-function' to `minibuffer-default-add-completions'
only for buffer-reading commands.

-- 
Juri Linkov
http://www.jurta.org/emacs/

bug#5214: 23.1; M-x C-p C-p ... showing strange history elements

[Alfred M. Szmidt]

   > I agree that pushing completions to M-n of M-x is confusing.
   > I don't find this feature useful.

   Then set minibuffer-default-add-function to nil.

Can we set this as the default? The current behaviour is not
intuitive, or useful.

bug#5214: 23.1; M-x C-p C-p ... showing strange history elements

[Juri Linkov]

>    > I agree that pushing completions to M-n of M-x is confusing.
>    > I don't find this feature useful.
>
>    Then set minibuffer-default-add-function to nil.
>
> Can we set this as the default? The current behaviour is not
> intuitive, or useful.

Yes, I agree.  But I'm not sure if this should be done for the next release,
because currently there is feature freeze.  Or this counts as a bug?

-- 
Juri Linkov
http://www.jurta.org/emacs/

bug#5214: 23.1; M-x C-p C-p ... showing strange history elements

[Juri Linkov]

>    > I agree that pushing completions to M-n of M-x is confusing.
>    > I don't find this feature useful.
>
>    Then set minibuffer-default-add-function to nil.
>
> Can we set this as the default? The current behaviour is not
> intuitive, or useful.

A patch to install after 23.2 is at http://debbugs.gnu.org/5364

-- 
Juri Linkov
http://www.jurta.org/emacs/

bug#5214: 23.1; M-x C-p C-p ... showing strange history elements

[Juri Linkov]

>>    > I agree that pushing completions to M-n of M-x is confusing.
>>    > I don't find this feature useful.
>>
>>    Then set minibuffer-default-add-function to nil.
>>
>> Can we set this as the default? The current behaviour is not
>> intuitive, or useful.
>
> A patch to install after 23.2 is at http://debbugs.gnu.org/5364

Installed a patch in bug#5364.