GNU bug report logs - #78451
30.0.92; prog-fill-reindent-defun ignores fill-column inside string in emacs-lisp-mode.

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Jake <jforst.mailman <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.0.92; prog-fill-reindent-defun ignores fill-column inside string
 in emacs-lisp-mode.
Date: Fri, 16 May 2025 07:47:42 +0000

[Message part 1 (text/plain, inline)]

Hello

`prog-fill-reindent-defun' does not respect the value of fill-column when
inside a string (e.g. a docstring) in emacs-lisp-mode and
lisp-interaction-mode.  I checked it is respected in python-mode, c-mode,
and c++-mode.

From emacs -Q:
Yank into the *scratch* buffer:

(defun a ()
  "a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
a a a a a a a a a a a a a a a a"
  nil)

C-x f 30 RET
Put the point inside the docstring and M-q
Observe that it is filled to something like column 70 to 75.

Thanks
Jake

[Message part 2 (text/html, inline)]

Message #8 received at 78451 <at> debbugs.gnu.org (full text, mbox):

From: Stephen Berman <stephen.berman <at> gmx.net>
To: Jake <jforst.mailman <at> gmail.com>
Cc: 78451 <at> debbugs.gnu.org
Subject: Re: bug#78451: 30.0.92; prog-fill-reindent-defun ignores
 fill-column inside string in emacs-lisp-mode.
Date: Fri, 16 May 2025 10:30:41 +0200

On Fri, 16 May 2025 07:47:42 +0000 Jake <jforst.mailman <at> gmail.com> wrote:

> Hello
>
> `prog-fill-reindent-defun' does not respect the value of fill-column when
> inside a string (e.g. a docstring) in emacs-lisp-mode and
> lisp-interaction-mode.  I checked it is respected in python-mode, c-mode,
> and c++-mode.
>
> From emacs -Q:
> Yank into the *scratch* buffer:
>
> (defun a ()
>   "a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
> a a a a a a a a a a a a a a a a"
>   nil)
>
> C-x f 30 RET
> Put the point inside the docstring and M-q
> Observe that it is filled to something like column 70 to 75.

That's because lisp-data-mode (which emacs-lisp-mode and
lisp-interaction-mode derive from) binds fill-column to the value of
emacs-lisp-docstring-fill-column, which is 72 by default.

Steve Berman

Message #11 received at 78451 <at> debbugs.gnu.org (full text, mbox):

From: Jake <jforst.mailman <at> gmail.com>
To: Stephen Berman <stephen.berman <at> gmx.net>
Cc: 78451 <at> debbugs.gnu.org
Subject: Re: bug#78451: 30.0.92; prog-fill-reindent-defun ignores fill-column
 inside string in emacs-lisp-mode.
Date: Fri, 16 May 2025 20:56:50 +0930

[Message part 1 (text/plain, inline)]

Thanks Steve.
It respects the fill-column when point is in a comment, though.  Is that
expected?

Jake


On Fri, 16 May 2025 at 6:00 pm, Stephen Berman <stephen.berman <at> gmx.net>
wrote:

> On Fri, 16 May 2025 07:47:42 +0000 Jake <jforst.mailman <at> gmail.com> wrote:
>
> > Hello
> >
> > `prog-fill-reindent-defun' does not respect the value of fill-column when
> > inside a string (e.g. a docstring) in emacs-lisp-mode and
> > lisp-interaction-mode.  I checked it is respected in python-mode, c-mode,
> > and c++-mode.
> >
> > From emacs -Q:
> > Yank into the *scratch* buffer:
> >
> > (defun a ()
> >   "a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
> a
> > a a a a a a a a a a a a a a a a"
> >   nil)
> >
> > C-x f 30 RET
> > Put the point inside the docstring and M-q
> > Observe that it is filled to something like column 70 to 75.
>
> That's because lisp-data-mode (which emacs-lisp-mode and
> lisp-interaction-mode derive from) binds fill-column to the value of
> emacs-lisp-docstring-fill-column, which is 72 by default.
>
> Steve Berman
>

[Message part 2 (text/html, inline)]

Message #14 received at 78451 <at> debbugs.gnu.org (full text, mbox):

From: Stephen Berman <stephen.berman <at> gmx.net>
To: Jake <jforst.mailman <at> gmail.com>
Cc: 78451 <at> debbugs.gnu.org
Subject: Re: bug#78451: 30.0.92; prog-fill-reindent-defun ignores
 fill-column inside string in emacs-lisp-mode.
Date: Fri, 16 May 2025 14:20:37 +0200

On Fri, 16 May 2025 20:56:50 +0930 Jake <jforst.mailman <at> gmail.com> wrote:

> Thanks Steve.
> It respects the fill-column when point is in a comment, though.  Is that
> expected?
>
> Jake

Yes, because emacs-lisp-docstring-fill-column is used only in the
function lisp-fill-paragraph, which handles filling in emacs-lisp-mode
and lisp-interaction-mode and treats doc strings specially but delegates
filling in comments to fill-comment-paragraph, which uses the
buffer-local value of fill-column.

If you agree this is not a bug, you can close this issue by sending
email (e.g. as a reply to this) to 78451-done <at> debbugs.gnu.org (and not
to 78451 <at> debbugs.gnu.org) (or I can close it if you prefer).

Steve Berman

> On Fri, 16 May 2025 at 6:00 pm, Stephen Berman <stephen.berman <at> gmx.net>
> wrote:
>
>> On Fri, 16 May 2025 07:47:42 +0000 Jake <jforst.mailman <at> gmail.com> wrote:
>>
>> > Hello
>> >
>> > `prog-fill-reindent-defun' does not respect the value of fill-column when
>> > inside a string (e.g. a docstring) in emacs-lisp-mode and
>> > lisp-interaction-mode.  I checked it is respected in python-mode, c-mode,
>> > and c++-mode.
>> >
>> > From emacs -Q:
>> > Yank into the *scratch* buffer:
>> >
>> > (defun a ()
>> >   "a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
>> a
>> > a a a a a a a a a a a a a a a a"
>> >   nil)
>> >
>> > C-x f 30 RET
>> > Put the point inside the docstring and M-q
>> > Observe that it is filled to something like column 70 to 75.
>>
>> That's because lisp-data-mode (which emacs-lisp-mode and
>> lisp-interaction-mode derive from) binds fill-column to the value of
>> emacs-lisp-docstring-fill-column, which is 72 by default.
>>
>> Steve Berman
>>

Message #19 received at 78451-done <at> debbugs.gnu.org (full text, mbox):

From: Jake <jforst.mailman <at> gmail.com>
To: 78451-done <at> debbugs.gnu.org
Cc: Stephen Berman <stephen.berman <at> gmx.net>
Subject: Re: bug#78451: 30.0.92; prog-fill-reindent-defun ignores fill-column
 inside string in emacs-lisp-mode.
Date: Fri, 16 May 2025 12:24:30 +0000

[Message part 1 (text/plain, inline)]

Closing.  Thanks for the help, Steve.

Jake

On Fri, May 16, 2025 at 12:20 PM Stephen Berman <stephen.berman <at> gmx.net>
wrote:

> On Fri, 16 May 2025 20:56:50 +0930 Jake <jforst.mailman <at> gmail.com> wrote:
>
> > Thanks Steve.
> > It respects the fill-column when point is in a comment, though.  Is that
> > expected?
> >
> > Jake
>
> Yes, because emacs-lisp-docstring-fill-column is used only in the
> function lisp-fill-paragraph, which handles filling in emacs-lisp-mode
> and lisp-interaction-mode and treats doc strings specially but delegates
> filling in comments to fill-comment-paragraph, which uses the
> buffer-local value of fill-column.
>
> If you agree this is not a bug, you can close this issue by sending
> email (e.g. as a reply to this) to 78451-done <at> debbugs.gnu.org (and not
> to 78451 <at> debbugs.gnu.org) (or I can close it if you prefer).
>
> Steve Berman
>
> > On Fri, 16 May 2025 at 6:00 pm, Stephen Berman <stephen.berman <at> gmx.net>
> > wrote:
> >
> >> On Fri, 16 May 2025 07:47:42 +0000 Jake <jforst.mailman <at> gmail.com>
> wrote:
> >>
> >> > Hello
> >> >
> >> > `prog-fill-reindent-defun' does not respect the value of fill-column
> when
> >> > inside a string (e.g. a docstring) in emacs-lisp-mode and
> >> > lisp-interaction-mode.  I checked it is respected in python-mode,
> c-mode,
> >> > and c++-mode.
> >> >
> >> > From emacs -Q:
> >> > Yank into the *scratch* buffer:
> >> >
> >> > (defun a ()
> >> >   "a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
> a a
> >> a
> >> > a a a a a a a a a a a a a a a a"
> >> >   nil)
> >> >
> >> > C-x f 30 RET
> >> > Put the point inside the docstring and M-q
> >> > Observe that it is filled to something like column 70 to 75.
> >>
> >> That's because lisp-data-mode (which emacs-lisp-mode and
> >> lisp-interaction-mode derive from) binds fill-column to the value of
> >> emacs-lisp-docstring-fill-column, which is 72 by default.
> >>
> >> Steve Berman
> >>
>

[Message part 2 (text/html, inline)]

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