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fix refining lowercase string and non-empty-string together #7844

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merged 1 commit into from Apr 5, 2022

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@orklah orklah commented Apr 5, 2022

This should fix #7843 (on Psalm 5 though...)

For the explanation: Psalm assertions works well when one of the two type is a super type of another (isContainedBy method). When that happens, Psalm just takes the narrower type and goes on. Issues arise when none of the type is completely included in another. (A great example is the condition just above with int<0, 10> and int<5, 15> which should result in int<5, 10> but need to be handled separately).

This is the same with non-empty-string and lowercase-string, the intersection of both is possible within Psalm's type system (non-empty-lowercase-string) but none is completely included in the other

@orklah orklah added the release:fix The PR will be included in 'Fixes' section of the release notes label Apr 5, 2022
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orklah commented Apr 5, 2022

Failure is unrelated, I'll have to check that later

@orklah orklah merged commit d176361 into vimeo:master Apr 5, 2022
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Nice!

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