We have an .editorconfig in the repository already, we could/should take advantage of it.
There has been a commit in 2020 to not enforce trailing whitespace removal, but we can change it to enforce non-change of trailing whitespace.

https://github.com/WebKit/WebKit/commit/85195ac3385176f0e2b664ad3198c5bbbb06ef6f

https://github.com/editorconfig/editorconfig/wiki/EditorConfig-Properties#trim_trailing_whitespace

Best,
Matthieu

On Wed, Apr 12, 2023 at 10:22 AM Anne van Kesteren via webkit-dev <webkit-dev@lists.webkit.org> wrote:
To reduce the overhead of switching between projects with different
whitespace requirements, I would like to suggest we start being
lenient when trailing whitespace is removed. In particular when a file
is being changed to fix a bug.

I could see going even further and enforcing this via the style
checker, if there is appetite for that.

Thanks for considering!
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