$OpenBSD: patch-doc_Makefile,v 1.1 2012/06/08 22:07:18 sthen Exp $
--- doc/Makefile.orig	Thu May 10 23:27:53 2012
+++ doc/Makefile	Thu May 10 23:28:01 2012
@@ -17,4 +17,5 @@ ${MAN}: ${MAN}.txt
 	else \
 	    ${COMPILE_FAILED}; \
 	fi
-	sed -i'' -e "s/\(antispam_[^ ,]*\)/\\\fI\1\\\fP/g" $@
+	sed -e "s/\(antispam_[^ ,]*\)/\\\fI\1\\\fP/g" < $@ > $@.tmp
+	mv $@.tmp $@
