GNU bug report logs - #28937
26.0.60; Value after elisp docstring is filled (boundaries on forward-paragraph)

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

From: Alex <agrambot <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 26.0.60; Value after elisp docstring is filled (boundaries on
 forward-paragraph)
Date: Sun, 22 Oct 2017 01:29:36 -0600

Consider:

(defun test ()
  "This is a test docstring.
Here is some more text."
  1
  2
  3
  4
  5)
  
In an Emacs Lisp/Lisp Interaction buffer press `M-q' anywhere in the
docstring to fill the above. Notice that 1 through 5 are all filled with
the docstring, when none of them should be. Now consider:

(defun test ()
  "This is a test docstring.
Here is some more text."
  1
  2
  (3)
  4
  5)

Now only 1 and 2 are filled. This is because forward-paragraph uses the
`paragraph-start' regexp to find the start of a new paragraph. This
regexp includes `(', which is why everything from (3) isn't filled.

What should likely be done is to find the end of the docstring when
filling it and stopping the search if it reaches the end.

forward-paragraph should accept an arbitrary point as a search limit to
accomplish the above.

Once this bug is fixed, the space+colon added in bug#24622 should be
removed.

Message #10 received at 28937 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Alex <agrambot <at> gmail.com>
Cc: 28937 <at> debbugs.gnu.org
Subject: Re: bug#28937: 26.0.60; Value after elisp docstring is filled
 (boundaries on forward-paragraph)
Date: Thu, 04 Feb 2021 16:14:28 +0100

Alex <agrambot <at> gmail.com> writes:

> Consider:
>
> (defun test ()
>   "This is a test docstring.
> Here is some more text."
>   1
>   2
>   3
>   4
>   5)
>
> In an Emacs Lisp/Lisp Interaction buffer press `M-q' anywhere in the
> docstring to fill the above. Notice that 1 through 5 are all filled with
> the docstring, when none of them should be.

I've now changed this in Emacs 28 to narrow to the string before doing
the filling, which seems to fix this problem, and hopefully shouldn't
have any adverse effects (*cough*).

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #21 received at 28937 <at> debbugs.gnu.org (full text, mbox):

From: "Basil L. Contovounesios" <contovob <at> tcd.ie>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 28937 <at> debbugs.gnu.org, Alex <agrambot <at> gmail.com>
Subject: Re: bug#28937: 26.0.60; Value after elisp docstring is filled
 (boundaries on forward-paragraph)
Date: Fri, 05 Mar 2021 12:55:26 +0000

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> I've now changed this in Emacs 28 to narrow to the string before doing
> the filling, which seems to fix this problem, and hopefully shouldn't
> have any adverse effects (*cough*).

(*cough*)

0. emacs -Q
1. (progn
     (insert "\n\n(defvar foo nil\n  \"First.\nSecond\n\nThird.\")\n")
     (end-of-line -2)
     (dotimes (_ 15)
       (insert " abcd")))
2. C-x C-e
3. M-q

Expected result: second paragraph filled, like in Emacs 27.
Actual result: second paragraph not filled.

(*cough* :)

Thanks,

-- 
Basil

In GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo version 1.16.0, Xaw3d scroll bars)
 of 2021-03-05 built on tia
Repository revision: 77ec25122c9a7855657de564101c9fe763b91013
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12010000
System Description: Debian GNU/Linux bullseye/sid

Configured using:
 'configure 'CC=ccache gcc' 'CFLAGS=-O2 -march=native' --config-cache
 --prefix=/home/blc/.local --enable-checking=structs
 --with-x-toolkit=lucid --with-file-notification=yes --with-x'

Configured features:
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XAW3D XDBE XIM XPM LUCID ZLIB

Important settings:
  value of $LANG: en_IE.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
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Load-path shadows:
None found.

Features:
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rfc822 mml mml-sec epa derived epg epg-config gnus-util rmail
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emacs)

Message #24 received at 28937 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: "Basil L. Contovounesios" <contovob <at> tcd.ie>
Cc: 28937 <at> debbugs.gnu.org, Alex <agrambot <at> gmail.com>
Subject: Re: bug#28937: 26.0.60; Value after elisp docstring is filled
 (boundaries on forward-paragraph)
Date: Fri, 05 Mar 2021 14:02:10 +0100

"Basil L. Contovounesios" <contovob <at> tcd.ie> writes:

>> I've now changed this in Emacs 28 to narrow to the string before doing
>> the filling, which seems to fix this problem, and hopefully shouldn't
>> have any adverse effects (*cough*).
>
> (*cough*)
>
> 0. emacs -Q
> 1. (progn
>      (insert "\n\n(defvar foo nil\n  \"First.\nSecond\n\nThird.\")\n")
>      (end-of-line -2)
>      (dotimes (_ 15)
>        (insert " abcd")))
> 2. C-x C-e
> 3. M-q

(*cough* *cough*)

I hope it's not catching!

This should be fixed now -- I forgot to preserve point after doing the
narrowing.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #27 received at 28937 <at> debbugs.gnu.org (full text, mbox):

From: "Basil L. Contovounesios" <contovob <at> tcd.ie>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 28937 <at> debbugs.gnu.org, Alex <agrambot <at> gmail.com>
Subject: Re: bug#28937: 26.0.60; Value after elisp docstring is filled
 (boundaries on forward-paragraph)
Date: Fri, 05 Mar 2021 13:36:58 +0000

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> "Basil L. Contovounesios" <contovob <at> tcd.ie> writes:
>
>>> I've now changed this in Emacs 28 to narrow to the string before doing
>>> the filling, which seems to fix this problem, and hopefully shouldn't
>>> have any adverse effects (*cough*).
>>
>> (*cough*)
>>
>> 0. emacs -Q
>> 1. (progn
>>      (insert "\n\n(defvar foo nil\n  \"First.\nSecond\n\nThird.\")\n")
>>      (end-of-line -2)
>>      (dotimes (_ 15)
>>        (insert " abcd")))
>> 2. C-x C-e
>> 3. M-q
>
> (*cough* *cough*)
>
> I hope it's not catching!

We may or may not want to expand M-x doctor.

> This should be fixed now

Yup, thanks!

-- 
Basil

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