commit https://github.com/vim/vim/commit/b20545f2a718d4f19c3f609fd11c0ca4eff450ce Author: Bram Moolenaar <Bram@vim.org> Date: Sat Apr 30 14:15:54 2016 +0200 patch 7.4.1804 Problem: Can't use Vim as MANPAGER. Solution: Add manpager.vim. (Enno Nagel, closes https://github.com/vim/vim/issues/491)

#! /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