False negative for `invalid-pathlib-with-suffix` (`PTH210`) if method called on direct instantiation

[dylwil3]

Summary

False negatives are understandable here if we can't be sure that an object is a Path object - but the below false negative seems silly because we are in a situation where we should be even more confident that we have a Path object!

from pathlib import Path

path = Path()

path.with_suffix("py") # PTH210

Path().with_suffix("py") # no lint

Playground link

Version

ruff 0.12.3 (5bc81f2 2025-07-11)

[MichaReiser]

This is roughly the same as #19294 but for with_suffix instead of open

[dylwil3]

Good catch - I will transfer this to a comment there instead!

[dylwil3]

Wait - actually that is the opposite issue