`-Wconf` `src` filter not implemented

[povder]

Compiler version

3.3.1

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Scala 2's -WConf filters include src filter which allows configuring warnings for a given source path pattern. It is missing in Scala 3. It is handy for ignoring warnings for generated sources where you have no option of placing @nowarn annotations. Right now I'm facing a problem were I can't enable -Werror because of warnings reported in generated sources (in my case generated by ScalaPB protobuf compiler).

It would be great to bring all Scala2 WConf filters to Scala 3 but this issue is just about src. I am willing to contribute a pull request for this.

[som-snytt]

Duplicates #17634 which was deemed not regressive enough to warrant a ticket without further discussion.

[povder]

Ah ok I didn't realize that before opening an issue I am supposed to search in resolved tickets as well.

[som-snytt]

I remembered because someone commented on the discussion that they would like to fix it, but of course they will need an open ticket! So your timing is impeccable.

[henricook]

Thanks for this @povder! I was looking it up because the issue prevents me using Play with Scala 3 (with warnings as errors), so this is very well timed for me personally :-D