bug#23265: 24.5; Docstring of dabbrev-select-buffers-function

bug#23265: 24.5; Docstring of dabbrev-select-buffers-function

[Rolf Ade]

I see the following with GNU Emacs 24.5.1 as well as with GNU Emacs
25.0.92.

Start emacs -Q

C-h v dabbrev-select-buffers-function RET

In the help buffer click at dabbrev--select-buffers (or move to point to
it and RET): Instead of the documentation of dabbrev--select-buffers I
get a wild error msg in the echo area:

apply: Wrong number of arguments: #[(fun file) "ÃÄ!ˆ\bÅ=ƒ.\0ÆÇ	!Á\".È	É\b#.Ê
@!ˆ
Aƒ'.
Ab‚*.ËÌ!)‡" [file fun location require find-func C-source help-C-file-name indirect-function find-function-search-for-symbol nil ...] 4], 1


(The real error msg contains NUL characters. I send them replaced with
. (dot). The real error msg is easy enough to re-produce.

bug#23265: 24.5; Docstring of dabbrev-select-buffers-function

[Eli Zaretskii]

> From: Rolf Ade <rolf@pointsman.de>
> Date: Sun, 10 Apr 2016 21:10:55 +0200
> 
> I see the following with GNU Emacs 24.5.1 as well as with GNU Emacs
> 25.0.92.
> 
> Start emacs -Q
> 
> C-h v dabbrev-select-buffers-function RET
> 
> In the help buffer click at dabbrev--select-buffers (or move to point to
> it and RET): Instead of the documentation of dabbrev--select-buffers I
> get a wild error msg in the echo area:
> 
> apply: Wrong number of arguments: #[(fun file) "ÃÄ!ˆ\bÅ=ƒ.

bug#23265: 24.5; Docstring of dabbrev-select-buffers-function

[Eli Zaretskii]

> Date: Mon, 11 Apr 2016 21:47:06 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 23265@debbugs.gnu.org
> 
> This is one of only 2 instances we have in all of Emacs of using the
> magic words "source of `SOMETHING'" in a doc string.

Btw, this magic string don't seem to be documented.

bug#23265: 24.5; Docstring of dabbrev-select-buffers-function

[Rolf Ade]

Rolf Ade <rolf@pointsman.de> writes:
> I see the following with GNU Emacs 24.5.1 as well as with GNU Emacs
> 25.0.92.
>
> Start emacs -Q
>
> C-h v dabbrev-select-buffers-function RET
>
> In the help buffer click at dabbrev--select-buffers (or move to point to
> it and RET): Instead of the documentation of dabbrev--select-buffers I
> get a wild error msg in the echo area:
>
> apply: Wrong number of arguments: #[(fun file) "ÃÄ!ˆ\bÅ=ƒ.ÆÇ	!Á\".È	É\b#.Ê
> @!ˆ
> Aƒ'.
> Ab‚*.ËÌ!)‡" [file fun location require find-func C-source help-C-file-name indirect-function find-function-search-for-symbol nil ...] 4], 1
>
>
> (The real error msg contains NUL characters. I send them replaced with
> . (dot). The real error msg is easy enough to re-produce.

This error, I saw (and Eli confirmed) in 24.5.1 and 25.0.92  isn't
reproducable anymore in 26.2 and master (of today).