Avoid adding temporary files/only add modified ones

[janopae]

I only want to commit changes (made by code formatters) to existing files. However, in order to format the files, I download other GitHub actions into the working directory. They get committed as submodules by this action.

My workaround is using add_options: '-n'. However, this feels like a hack/workaround, and I'd appreciate a skip_add option similar to skip_fetch and skip_checkout.

[stefanzweifel]

In such cases I would suggest adding your submodule to .gitignore so it won't be added by the action.

Adding a skip_add-option doesn't make sense to me; maybe I just don't see the issue as clearly as you do as I don't have an explicit example.
If the git-add-step is skipped, the core feature of the action does not work. 🤔

[janopae]

You're right. The behaviour I actually wanted was the equivalent of providing no pathspec argument to add or using the -u option. That seems to work perfectly fine :)

(at least the -u option – haven't tried the empty pathspec)