patch 8.0.0442: patch shell command not well escaped commit https://github.com/vim/vim/commit/1ef73e33c9414eb02c229d8234aafd9d481a8856 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Mar 9 19:21:30 2017 +0100 patch 8.0.0442: patch shell command not well escaped Problem: Patch shell command uses double quotes around the argument, which allows for $HOME to be expanded. (Etienne) Solution: Use single quotes on Unix. (closes #1543)

start:
test for empty string: ok
test for 1 char: ok
test for 3 chars: ok
test for contains meta char: ok
test for contains non-ascii char: ok