Please document the evaluation priorities of operators

[fabricetriboix]

Code of Conduct

• I have read and agree to the GitHub Docs project's Code of Conduct

What article on docs.github.com is affected?

https://docs.github.com/en/actions/reference/workflows-and-actions/expressions

What part(s) of the article would you like to see updated?

Hello,

This page documents expressions supported by GitHub Actions. However, it doesn't explain the evaluation priorities of the various operators. For example, in C/C++, && has priority over ==, so an expression like

a == b && c

will certainly not yield the intended result. In C/C++, you probably want to write something like this:

(a == b) && c

But I have seen workflow files containing expressions such as

a == b && c

and apparently yielding the expected result.

Please clarify this by documenting the operators' priorities.

Additional information

No response

[welcome]

Thanks for opening this issue. A GitHub docs team member should be by to give feedback soon. In the meantime, please check out the contributing guidelines.

[Sharra-writes]

@fabricetriboix Thanks for opening an issue! From a cursory Google search, it looks like YAML doesn't impose a priority. It may vary in Actions based on the runner environment? I've asked for clarification from people who know a lot more about this than I do, and I'll let you know what I find out.