patch 8.2.2793: MS-Windows: string literals are writable with MSVC Commit: https://github.com/vim/vim/commit/d23f8bde5cd16b7752cc4a73da106673839ed824 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Apr 21 11:30:48 2021 +0200 patch 8.2.2793: MS-Windows: string literals are writable with MSVC Problem: MS-Windows: string literals are writable with MSVC. Solution: Add the /GF compiler flag. Make mch_write() safer. (Ken Takata, closes #8133)

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