patch 8.2.4164: error in legacy code for function shadowing variable Commit: https://github.com/vim/vim/commit/6f0ddbf00dfc4c6eb70aa4abc415cad7aba46b6a Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jan 20 19:56:49 2022 +0000 patch 8.2.4164: error in legacy code for function shadowing variable Problem: Error in legacy code for function shadowing variable. Solution: Only give the error in Vim9 script.

# Clang 12 (or Apple clang 13) and later makes a warning '-Wcompound-token-split-by-macro' enable by default.
/^PERL_CFLAGS_EXTRA[[:blank:]]*=/s/$/ -Wno-error=compound-token-split-by-macro/
/^RUBY_CFLAGS_EXTRA[[:blank:]]*=/s/$/ -Wno-error=compound-token-split-by-macro/