GNU bug report logs - #68607
`fill-column` doesn't always fill paragraph in text-mode

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

From: Konstantin Kharlamov <Hi-Angel <at> yandex.ru>
To: bug-gnu-emacs <at> gnu.org
Subject: `fill-column` doesn't always fill paragraph in text-mode
Date: Sat, 20 Jan 2024 14:31:27 +0300

I saw that behavior in different circumstances many times, but this
time I noticed it while working on the NEWS entry as part of #68579 and
it's an easy testcase, so I decided to report.

# Steps to reproduce

1. Create a `1.txt` file with the following text:

It is now possible to pass a directory of a local repository as URL
inside 'treesit-language-source-alist', so that calling
'treesit-install-language-grammar' would avoid cloning the
repository. It may be useful for example for the purposes of bisecting
a treesitter grammar.

2. Open it with `emacs -Q 1.txt`
3. Evaluate (setq fill-column 71)
4. Put a caret over the paragraph and press M-q (alternatively execute M-x
   fill-paragraph)

## Expected

Lines 3 and 4 will change such that the word `repository` gets moved to the 3rd line.

## Actual

Nothing happens

# Version

Emacs build from git 2 days ago: GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.39, cairo version 1.18.0) of 2024-01-18

Message #8 received at 68607 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Konstantin Kharlamov <Hi-Angel <at> yandex.ru>
Cc: 68607 <at> debbugs.gnu.org
Subject: Re: bug#68607: `fill-column` doesn't always fill paragraph in
 text-mode
Date: Sat, 20 Jan 2024 13:57:21 +0200

tags 68607 notabug
thanks

> From: Konstantin Kharlamov <Hi-Angel <at> yandex.ru>
> Date: Sat, 20 Jan 2024 14:31:27 +0300
> 
> 1. Create a `1.txt` file with the following text:
> 
> It is now possible to pass a directory of a local repository as URL
> inside 'treesit-language-source-alist', so that calling
> 'treesit-install-language-grammar' would avoid cloning the
> repository. It may be useful for example for the purposes of bisecting
> a treesitter grammar.
> 
> 2. Open it with `emacs -Q 1.txt`
> 3. Evaluate (setq fill-column 71)
> 4. Put a caret over the paragraph and press M-q (alternatively execute M-x
>    fill-paragraph)
> 
> ## Expected
> 
> Lines 3 and 4 will change such that the word `repository` gets moved to the 3rd line.
> 
> ## Actual
> 
> Nothing happens

You leave only 1 space between sentences, but didn't customize
sentence-end-double-space to nil to match your style.

This is a cockpit error, Emacs works as intended.

Message #15 received at 68607-done <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefankangas <at> gmail.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 68607-done <at> debbugs.gnu.org, Konstantin Kharlamov <Hi-Angel <at> yandex.ru>
Subject: Re: bug#68607: `fill-column` doesn't always fill paragraph in
 text-mode
Date: Fri, 4 Oct 2024 18:17:39 -0700

Eli Zaretskii <eliz <at> gnu.org> writes:

> tags 68607 notabug
> thanks
>
>> From: Konstantin Kharlamov <Hi-Angel <at> yandex.ru>
>> Date: Sat, 20 Jan 2024 14:31:27 +0300
>>
>> 1. Create a `1.txt` file with the following text:
>>
>> It is now possible to pass a directory of a local repository as URL
>> inside 'treesit-language-source-alist', so that calling
>> 'treesit-install-language-grammar' would avoid cloning the
>> repository. It may be useful for example for the purposes of bisecting
>> a treesitter grammar.
>>
>> 2. Open it with `emacs -Q 1.txt`
>> 3. Evaluate (setq fill-column 71)
>> 4. Put a caret over the paragraph and press M-q (alternatively execute M-x
>>    fill-paragraph)
>>
>> ## Expected
>>
>> Lines 3 and 4 will change such that the word `repository` gets moved to the 3rd line.
>>
>> ## Actual
>>
>> Nothing happens
>
> You leave only 1 space between sentences, but didn't customize
> sentence-end-double-space to nil to match your style.
>
> This is a cockpit error, Emacs works as intended.

I'm therefore closing this bug report.

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