diff -u -r -P -p ports-mgmt/pkg_rmleaves/Makefile.orig ports-mgmt/pkg_rmleaves/Makefile
--- ports-mgmt/pkg_rmleaves/Makefile.orig	2015-09-09 02:00:03.629555000 +0900
+++ ports-mgmt/pkg_rmleaves/Makefile	2017-05-14 02:20:31.547549000 +0900
@@ -13,6 +13,8 @@ LICENSE=	BSD2CLAUSE
 
 NO_BUILD=	yes
 
+RUN_DEPENDS=	gdiff:textproc/diffutils
+
 WRKSRC=		${WRKDIR}
 
 PLIST_FILES=	sbin/pkg_rmleaves man/man1/pkg_rmleaves.1.gz
diff -u -r -P -p ports-mgmt/pkg_rmleaves/files/patch-pkg_rmleaves.orig ports-mgmt/pkg_rmleaves/files/patch-pkg_rmleaves
--- ports-mgmt/pkg_rmleaves/files/patch-pkg_rmleaves.orig	1970-01-01 09:00:00.000000000 +0900
+++ ports-mgmt/pkg_rmleaves/files/patch-pkg_rmleaves	2017-05-14 02:22:57.050609000 +0900
@@ -0,0 +1,11 @@
+--- pkg_rmleaves.orig	2014-02-22 21:21:47.000000000 +0900
++++ pkg_rmleaves	2017-05-14 02:16:55.751443000 +0900
+@@ -74,7 +74,7 @@ checkLeafs() {
+ 	fi | sort | sed -e "y/\"/'/" -e 's/#"#/"/g' > "$PKGFILE"
+ 
+ 	if [ -f "$PREV" ]; then
+-		diff --unchanged-line-format='' --old-line-format='' --new-line-format='%L' "$PREV" "$PKGFILE" > "$TMPFILE"
++		gdiff --unchanged-line-format='' --old-line-format='' --new-line-format='%L' "$PREV" "$PKGFILE" > "$TMPFILE"
+ 	else
+ 		cp "$PKGFILE" "$TMPFILE"
+ 	fi