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Prevent GitHub's web conflict editor from converting LF to CRLF#148739

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hugovk merged 2 commits intopython:mainfrom
hugovk:3.15-rst-eol
Apr 19, 2026
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Prevent GitHub's web conflict editor from converting LF to CRLF#148739
hugovk merged 2 commits intopython:mainfrom
hugovk:3.15-rst-eol

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@hugovk
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@hugovk hugovk commented Apr 18, 2026

I resolved a conflict in a PR using the GitHub web editor, using Chrome on macOS, which involved moving lines around. However, GitHub also changed the LF endings to CRLF:

7208828

So I had to fix it locally:

fede255

I don't know why GitHub does this. It doesn't seem to do it for simple edits, moving lines appears to be important.

A similar thing happened recently with f938f01, which only affected a few lines.

We added extra linting (#148336) to help catch stuff like this, but it only checks that the endings match the majority. That won't pick up whole file changes!

Anyway, doing some tests, GH does at least respect .gitattributes, so let's declare it.

@StanFromIreland
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It seems there is a NEWS entry with CRLF endings: https://github.com/python/cpython/actions/runs/24613765518/job/71972503301?pr=148739

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hugovk commented Apr 18, 2026

Converted that to LF too.

@hugovk hugovk merged commit 9e23652 into python:main Apr 19, 2026
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@hugovk hugovk deleted the 3.15-rst-eol branch April 19, 2026 09:21
@miss-islington-app
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Thanks @hugovk for the PR 🌮🎉.. I'm working now to backport this PR to: 3.13, 3.14.
🐍🍒⛏🤖

miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Apr 19, 2026
…onGH-148739)

(cherry picked from commit 9e236522302a003ae659a825da74501f3aa1c4c1)

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
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bedevere-app bot commented Apr 19, 2026

GH-148748 is a backport of this pull request to the 3.14 branch.

@bedevere-app bedevere-app bot removed the needs backport to 3.14 bugs and security fixes label Apr 19, 2026
miss-islington pushed a commit to miss-islington/cpython that referenced this pull request Apr 19, 2026
…onGH-148739)

(cherry picked from commit 9e236522302a003ae659a825da74501f3aa1c4c1)

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
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bedevere-app bot commented Apr 19, 2026

GH-148749 is a backport of this pull request to the 3.13 branch.

@bedevere-app bedevere-app bot removed the needs backport to 3.13 bugs and security fixes label Apr 19, 2026
hugovk added a commit that referenced this pull request Apr 19, 2026
GH-148739) (#148749)

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
hugovk added a commit that referenced this pull request Apr 19, 2026
GH-148739) (#148748)

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
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