patch 9.0.1589: filetype test contains too many special characters Commit: https://github.com/vim/vim/commit/b140c114f641ac4cd4fb04e7bdec031295264a8d Author: Bram Moolenaar <Bram@vim.org> Date: Mon May 29 17:06:05 2023 +0100 patch 9.0.1589: filetype test contains too many special characters Problem: Filetype test contains too many special characters. Solution: Use Vim9 syntax for a few things.

#! /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