commit https://github.com/vim/vim/commit/d0b5138ba4bccff8a744c99836041ef6322ed39a Author: Bram Moolenaar <Bram@vim.org> Date: Fri Nov 4 15:23:45 2016 +0100 patch 8.0.0056 Problem: When setting 'filetype' there is no check for a valid name. Solution: Only allow valid characters in 'filetype', 'syntax' and 'keymap'.

#! /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