Disable all git EOL conversions

[davidanthoff]

This replaces #27291, or rather is a second attempt to achieve the same thing. #27291 was reverted because it only worked with git >=2.10 and that was deemed unacceptable.

I think this PR here should also work with older git versions, but I'm not 100% positive.

I think if this was merged it should happen sometime early in a release cycle. If this PR does not work for some reason, it would probably be fairly disruptive, so better to try it early in a cycle rather than just before a release. So now might be a good time :)

CCing @vtjnash, @ararslan.

[Keno]

doesn't turning off the text attribute also prevent nice diffs?

[davidanthoff]

My understanding is that the text attribute only controls eol handling, and that diff behavior is controlled by the diff attribute, which this PR is not changing. If we were using the binary macro it would disable eol adjustments and diffing. At least that is how I’m reading https://git-scm.com/docs/gitattributes.

But probably worth trying things out on a number of systems, just to be sure we’re not breaking things.