GNU bug report logs - #68781
[PATCH] Don't fill yaml except comments and block scalars.

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From: Randy Taylor <dev <at> rjt.dev>
To: Rudolf Schlatte <rudi <at> constantly.at>
Cc: "graham <at> mgmarlow.com" <graham <at> mgmarlow.com>, 68781 <at> debbugs.gnu.org
Subject: bug#68781: [PATCH] Don't fill yaml except comments and block scalars.
Date: Mon, 29 Jan 2024 03:47:53 +0000

On Sunday, January 28th, 2024 at 08:15, Rudolf Schlatte <rudi <at> constantly.at> wrote:
> 
> 
> Tags: patch
> 
> Hi,
> 
> Currently, yaml-ts-mode fills comments and block scalars (multi-line
> text literals) as expected, but re-fills the whole file when point is
> outside of either of these constructs. Since yaml line breaks and
> whitespace are significant, I'd say that this is never the correct
> behavior.
> 
> This patch against current master inhibits M-q (fill-paragraph) outside
> of comments and block scalars. In my tests default fill-paragraph
> worked as expected both with and without justify, correctly detecting
> comment and block literal boundaries, so I did not preserve the previous
> code in `yaml-ts-mode--fill-paragraph'.

Thanks for working on this.

The previous implementation (see bug#68226) provided an example where:
foo: |
  line-one
  line-two

Would become:
foo: | line-one line-two

When it should be:
foo: |
  line-one line-two

Your patch undoes this fix.

I think I also ran into another bug using your patch: when inside a block scalar, for example, running fill-paragraph will re-fill the whole file (or parts of it at least).

I agree that we shouldn't try to fill anything that isn't a comment or block scalar, and I also like the change in your other message where only the paragraph that point is on gets filled.

BTW would it be possible to add tests for these? See `c-ts-mode-tests.el', specifically `c-ts-mode-test-filling', for inspiration.

Graham, you added `yaml-ts-mode--fill-paragraph' - what are your thoughts? See also Rudolf's other message.

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