patch 8.1.0781: build error when using if_xcmdsrv.c commit https://github.com/vim/vim/commit/a502caab8bd396316a6eb5cb821b0a0df55c502a Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jan 19 18:23:41 2019 +0100 patch 8.1.0781: build error when using if_xcmdsrv.c Problem: Build error when using if_xcmdsrv.c. Solution: Add missing part of 8.1.0779.

#! /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