Problem matchers: Code is not actually using EcmaScript-style regexs as documented

[lumaxis]

I'm not 100% sure that this is really the case since my understanding of Dotnet and C# is pretty limited but the current documentation seems to suggest that the problem matchers use EcmaScript-style regex syntax but I don't see the necessary options being passed here: https://github.com/actions/runner/blob/6c70d53eead402ba5d53676d6ed649a04e219c9b/src/Runner.Worker/IssueMatcher.cs#L68
The default seems to be to use canonical regex synatx: https://docs.microsoft.com/en-us/dotnet/standard/base-types/regular-expression-options#default-options

[thboop]

Hey @lumaxis , they are passed in here: https://github.com/actions/runner/blob/6c70d53eead402ba5d53676d6ed649a04e219c9b/src/Runner.Worker/IssueMatcher.cs#L408

I'm going to close this issue out, as it appears to be working as expected, but if you are still seeing issues with it not using EMCAScript let me know and I'll reopen!

[lumaxis]

Fantastic, thanks for digging that up!