GNU bug report logs - #53328
27.2; Doc-string line incorrectly filled (off-by-one bug)

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Package: emacs;

Reported by: Drew Adams <drew.adams <at> oracle.com>

Date: Mon, 17 Jan 2022 20:44:01 UTC

Severity: normal

Found in version 27.2

Done: Drew Adams <drew.adams <at> oracle.com>

Bug is archived. No further changes may be made.

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Report forwarded to bug-gnu-emacs <at> gnu.org:
bug#53328; Package emacs. (Mon, 17 Jan 2022 20:44:02 GMT) Full text and rfc822 format available.

Acknowledgement sent to Drew Adams <drew.adams <at> oracle.com>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Mon, 17 Jan 2022 20:44:02 GMT) Full text and rfc822 format available.

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

From: Drew Adams <drew.adams <at> oracle.com>
To: "bug-gnu-emacs <at> gnu.org" <bug-gnu-emacs <at> gnu.org>
Subject: 27.2; Doc-string line incorrectly filled (off-by-one bug)
Date: Mon, 17 Jan 2022 20:43:21 +0000
emacs -Q

(defface foo
  '((t :background "Green"))
  "Face used to @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
xxxxx xxxxxxxxxxx xxxxxxxxxxxx xxxxxxxxxxxxx  xxxxxxx  xxxxxx yyyyyyy."
  :group 'faces)

Put point at the beginning of the second doc-string line.

`M-q'

That second line is filled by inserting a newline char before `yyyyyyy'.
The line should not be split - it is 70 chars, which is allowed by
convention.

The problem seems to be an off-by-one bug.  The double-quote char ending
the string is perhaps being counted, as if it were part of the doc
string.

In GNU Emacs 27.2 (build 1, x86_64-w64-mingw32)
 of 2021-03-26 built on CIRROCUMULUS
Repository revision: deef5efafb70f4b171265b896505b92b6eef24e6
Repository branch: HEAD
Windowing system distributor 'Microsoft Corp.', version 10.0.19043
System Description: Microsoft Windows 10 Pro (v10.0.2009.19043.1466)




Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#53328; Package emacs. (Tue, 18 Jan 2022 18:14:01 GMT) Full text and rfc822 format available.

Message #8 received at 53328 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Drew Adams <drew.adams <at> oracle.com>
Cc: 53328 <at> debbugs.gnu.org
Subject: Re: bug#53328: 27.2;
 Doc-string line incorrectly filled (off-by-one bug)
Date: Tue, 18 Jan 2022 20:13:34 +0200
> From: Drew Adams <drew.adams <at> oracle.com>
> Date: Mon, 17 Jan 2022 20:43:21 +0000
> 
> emacs -Q
> 
> (defface foo
>   '((t :background "Green"))
>   "Face used to @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
> xxxxx xxxxxxxxxxx xxxxxxxxxxxx xxxxxxxxxxxxx  xxxxxxx  xxxxxx yyyyyyy."
>   :group 'faces)
> 
> Put point at the beginning of the second doc-string line.
> 
> `M-q'
> 
> That second line is filled by inserting a newline char before `yyyyyyy'.
> The line should not be split - it is 70 chars, which is allowed by
> convention.
> 
> The problem seems to be an off-by-one bug.  The double-quote char ending
> the string is perhaps being counted, as if it were part of the doc
> string.

What command is bound to M-q in this case on your system?  Here it is
fill-paragraph, and that command knows nothing about Lisp doc strings.
For it, this is just plain text.




Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#53328; Package emacs. (Tue, 18 Jan 2022 19:31:01 GMT) Full text and rfc822 format available.

Message #11 received at 53328 <at> debbugs.gnu.org (full text, mbox):

From: Drew Adams <drew.adams <at> oracle.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: "53328 <at> debbugs.gnu.org" <53328 <at> debbugs.gnu.org>
Subject: RE: [External] : Re: bug#53328: 27.2; Doc-string line incorrectly
 filled (off-by-one bug)
Date: Tue, 18 Jan 2022 19:30:29 +0000
> What command is bound to M-q in this case on your system?  Here it is
> fill-paragraph, and that command knows nothing about Lisp doc strings.
> For it, this is just plain text.

Right.  It's fill-paragraph here, too.

I closed this report.  Thx.




bug closed, send any further explanations to 53328 <at> debbugs.gnu.org and Drew Adams <drew.adams <at> oracle.com> Request was from Drew Adams <drew.adams <at> oracle.com> to control <at> debbugs.gnu.org. (Tue, 18 Jan 2022 19:31:02 GMT) Full text and rfc822 format available.

bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Wed, 16 Feb 2022 12:24:06 GMT) Full text and rfc822 format available.

This bug report was last modified 2 years and 42 days ago.

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