[Feature Request] Additional <exclude> on a per-step basis

[blacelle]

In some cases, one need to exclude some step for some files. It happens in project requiring faulty code to remain faulty.

For instance :

• Upgrade Spotless and wire Cleanthat skylot/jadx#1792
• Anything in https://github.com/solven-eu/cleanthat/tree/master/java/src/test/java/eu/solven/cleanthat/do_not_format_me

This need is especially useful with new steps enabling linting (cleanthat, eclipse cleanup, etc), which is more opinionated than formatting.

• I believe it would be bad that each step implement implement its own exclusion mechanism, which it could be one way to go (through FilterByFileFormatterStep).
• Is there any existing mechanism to achieve this ?
• Is this was introduced as a new-feature, what would be the recommended design?

[nedtwigg]

There is no existing mechanism to achieve this. I would probably name it skipStep. Something like

skipStep('cleanthat').forFiles('Blah.java')

It is blocked on #1096. I try very hard not to be a blocker for things that people want to get merged, but there's a couple structural things that are piling up while I remain responsive on minor issues. I'm going to go dark on issues and PR's for the rest of this week until I am able to get a few of these blockers completed and merged.

[nedtwigg]

• This is now possible in plugin-gradle 7.0.0.BETA4. Making this possible in maven will require Lint suppression API for Maven #2309.