patch 8.2.0642: Vim9: using invalid index Commit: https://github.com/vim/vim/commit/7d41aa8874a62eb399e13b94add7f0e5c4dd074b Author: Bram Moolenaar <Bram@vim.org> Date: Sun Apr 26 14:29:56 2020 +0200 patch 8.2.0642: Vim9: using invalid index Problem: Vim9: using invalid index. Solution: Check index for being valid. Fix memory leak.

#! /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