commit https://github.com/vim/vim/commit/7f8989dd8a627af2185df381195351a913f3777f Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 12 22:11:39 2016 +0100 patch 7.4.1552 Problem: ":colorscheme" does not use 'packpath'. Solution: Also use in "start" and "opt" directories in 'packpath'.

#! /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