On 14 Nov 2018, at 16:31, Stefan Daschek wrote:

For me it’s still a no-op in some projects – and it may still be related to Git submodules: For the handful of projects I tried, it worked correctly in those without submodules, and didn’t work in those containing submodules (regardless whether the project folder was the parent repository or one of it’s submodules).

The TextMate source itself uses submodules, can you try clone that repository and see if that works?

git clone --recursive https://github.com/textmate/textmate.git