github/action: on fork, run the CI for all the branches (currently: only main)

[sylvestre]

No description provided.

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/timeout/timeout (fails in this run but passes in the 'main' branch)

[drinkcat]

A consequence of this change is that CI is now running anytime I push a new branch in drinkcat/coreutils (sometimes it's even temporary branches I don't really need to run CI on...), see https://github.com/drinkcat/coreutils/actions .

Is that what you intended? I don't push that many temporary branches, and I'm totally ok using my free github credits (especially for my sometimes failing experiments, I hope I didn't abuse the main uutils CI too much ,-/), but I'm not sure if every other contributor would be ok with that?

[drinkcat]

(oh, I guess other devs could just disable the actions on their fork if they wanted to)

[sylvestre]

Yeah, the goal is to have green CI when the dev submits a pr

I feel that it is the usual behavior of github, no?

[drinkcat]

Makes sense, I'm not sure what's usual, I guess you'll see if other people notice (and complain ,-P). Thanks.

[sylvestre]

yeah, this is my approach :)