set-output is deprecated

[larrys]

https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

I am getting the following warning when running actionlint

The set-output command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

[rhysd]

It would be great if we can catch this. However, how can we check it statically? The deprecated command is run by outputting a command to stdout dynamically.

[jcrqr]

@rhysd you mean statically check if a command is deprecated?

[Gudahtt]

actionlint itself is using the deprecated command. e.g. https://github.com/rhysd/actionlint/blob/main/scripts/download-actionlint.bash#L135

Catching usage of this deprecated command would be useful, but I don't think that's what this issue was requesting.

[rhysd]

you mean statically check if a command is deprecated?

No. I meant statically detecting the command is used.

actionlint itself is using the deprecated command.

Yes. I said this idea would be great if it can be realized without false positive in #234 (comment).

[rhysd]

Today I have some time to implement this with simple pattern matching. I will try it and look if it causes some false positives or not.

[rhysd]

v1.6.22 included this feature.