? tkhtml-with-regress.diff
Index: Makefile
===================================================================
RCS file: /cvs/ports/x11/tkhtml/Makefile,v
retrieving revision 1.5
diff -u -r1.5 Makefile
--- Makefile	5 Jan 2011 17:50:48 -0000	1.5
+++ Makefile	15 Nov 2011 17:49:05 -0000
@@ -37,6 +37,7 @@
 			--datadir=${PREFIX}/share/examples \
 			LIBTkhtml30_VERSION=${LIBTkhtml30_VERSION}
 FAKE_FLAGS =		PKG_DIR=tkhtml
-NO_REGRESS =		Yes
+REGRESS_TARGET =	test
+REGRESS_IS_INTERACTIVE = X11
 
 .include <bsd.port.mk>