dnl $OpenBSD: patterns.m4,v 1.4 2003/06/08 20:11:45 espie Exp $ patsubst(`quote s in string', `(s)', `\\\1') patsubst(`check whether subst over several lines works as expected', `^', `>>>') patsubst(`# This is a line to zap # and a second line keep this one', `^ *#.* ') dnl Special case: empty regexp patsubst(`empty regexp',`',`a ')