patch 9.0.0020: with some completion reading past end of string Commit: https://github.com/vim/vim/commit/f12129f1714f7d2301935bb21d896609bdac221c Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jul 1 19:58:30 2022 +0100 patch 9.0.0020: with some completion reading past end of string Problem: With some completion reading past end of string. Solution: Check the length of the string.

/^CFLAGS[[:blank:]]*=/s/$/ -Wall -Wextra -Wshadow -Werror/
/^PERL_CFLAGS_EXTRA[[:blank:]]*=/s/$/ -Wno-error=unused-function/
/^RUBY_CFLAGS_EXTRA[[:blank:]]*=/s/$/ -Wno-error=unused-parameter/