patch 8.0.1708: mkdir with 'p' flag fails on existing directory commit https://github.com/vim/vim/commit/78a16b0f2a142aae1fdc96c50ab0f25194d0e755 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Apr 14 13:51:55 2018 +0200 patch 8.0.1708: mkdir with 'p' flag fails on existing directory Problem: Mkdir with 'p' flag fails on existing directory, which is different from the mkdir shell command. Solution: Don't fail if the directory already exists. (James McCoy, closes #2775)

#! /bin/sh
#
# which.sh -- find where an executable is located.  It's here because the
# "which" command is not supported everywhere.  Used by Makefile.

IFS=":"
for ac_dir in $PATH; do
	if test -f "$ac_dir/$1"; then
		echo "$ac_dir/$1"
		break
	fi
done