How to exclude files from being formatted by clang-format in a directory and all its subdirectories ?

[Pavi92]

Lets say I have the follwing project structure:

• Project
  • src
    • main.c
    • other.c
  • include
    • other.h
  • libs
    • lib1
      • lib1.c
      • lib1.h
    • lib2
      • lib2.c
      • lib2.h
  • .clang-format

How can I exclude all files inside the libs directory and subdirectories from being formatted ?
I tried to add a .clang-format-ignore file next to the .clang-format with follwing content:
libs/*

But this does not work.

[sean-mcmanus]

That is tracked by #7543. You can upvote that.