commit https://github.com/vim/vim/commit/dd1248143e56b1450903fe40813e40c63691b071 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Aug 21 15:00:03 2016 +0200 patch 7.4.2234 Problem: Can't build with +eval but without +quickfix. (John Marriott) Solution: Move skip_vimgrep_pat() to separate #ifdef block.

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