patch 9.0.1569: cannot use "this.member" in lambda in class method Commit: https://github.com/vim/vim/commit/2bd6a09691fc71974ca7ab5973f8e08fdd2a889a Author: h-east <h.east.727@gmail.com> Date: Fri May 19 19:01:17 2023 +0100 patch 9.0.1569: cannot use "this.member" in lambda in class method Problem: Cannot use "this.member" in lambda in class method. Solution: Adjust check for reserved keyword. (Hirohito Higashi, closes #12416, closes #12076, closes #12336)