Update existing PR if it exists

[jesseduffield]

Sometimes I'll create a release and then this action will create a PR for me (e.g. v5.0.0), and then I'll soon afterwards push a new release with a bugfix in it (e.g. v5.0.1). Currently, the action will fail due to an existing PR being present. I would instead like it to push a new commit to the existing PR with the updated formula.

I'm not sure if this is possible. If people think this behaviour shouldn't be enabled by default, perhaps it could be an optional flag

Also hope you're doing well @dawidd6 !

[jesseduffield]

Ah, looks like the 'force' flag may be what I want. Though it's not clear from the documentation what that will do. Will it create a separate PR?

[dawidd6]

That would require a fair bit of coding in the action itself or upstream in Homebrew/brew. The force input corresponds to brew bump-formula-pr --force option which means:

-f, --force Ignore duplicate open PRs. Remove all mirrors if --mirror was not specified.

...which could be what you want, except you would then end up with two PRs being open at the same time (one for v5.0.0, second for v5.0.1) and that could annoy maintainers 😄 if you don't close the previous PR manually.

[jesseduffield]

Ah, that makes sense, thanks