updated for version 7.3.829 Problem: When compiled with the +rightleft feature 'showmatch' also shows a match for the opening paren. When 'revins' is set the screen may scroll. Solution: Only check the opening paren when the +rightleft feature was enabled. Do not show a match that is not visible. (partly by Christian Brabandt)

#! /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