patch 9.0.0892: may redraw when not needed Commit: https://github.com/vim/vim/commit/f32fb93e431e4db95a8663d86dfeb6bffa5896f6 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Nov 17 11:34:38 2022 +0000 patch 9.0.0892: may redraw when not needed Problem: May redraw when not needed, causing slow scrolling. Solution: Do not redraw when w_skipcol doesn't change. When w_skipcol changes only redraw from the top. (issue #11559)

# 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/