Index: head/graphics/bitmap/Makefile
===================================================================
--- head/graphics/bitmap/Makefile	(revision 508671)
+++ head/graphics/bitmap/Makefile	(revision 508672)
@@ -1,33 +1,37 @@
 # $FreeBSD$
 
 PORTNAME=	bitmap
 DISTVERSION=	g20181222
+PORTREVISION=	1
 CATEGORIES=	graphics
 PKGNAMESUFFIX=	-graphics-library
+
+PATCH_SITES=	https://github.com/${GH_ACCOUNT}/${PORTNAME}/commit/
+PATCHFILES=	db80ca605a952e6a8ccd42eba3fcc5b40fba5640.patch:-p1 # https://github.com/ArashPartow/bitmap/pull/8: Implement write_image()/read_image() functions
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Minimalistic library manipulating 24-bit per pixel bitmap images
 
 LICENSE=	MIT
 
 USE_GITHUB=	yes
 GH_ACCOUNT=	ArashPartow
 GH_TAGNAME=	b02297f
 
 NO_BUILD=	yes
 NO_ARCH=	yes
 
 PLIST_FILES=	include/bitmap_image.hpp
 
 do-install:
 	${INSTALL_DATA} ${WRKSRC}/bitmap_image.hpp ${STAGEDIR}${PREFIX}/include
 
 do-test:
 	@cd ${WRKSRC} && \
 		${SETENV} ${MAKE_ENV} ${MAKE_CMD} bitmap_test && \
 		${CXX} ${CXXFLAGS} -o mk-image ${FILESDIR}/mk-image.cpp -I. && \
 		./mk-image && \
 		./bitmap_test && \
 		${ECHO} "Tests succeeded"
 
 .include <bsd.port.mk>
Index: head/graphics/bitmap/distinfo
===================================================================
--- head/graphics/bitmap/distinfo	(revision 508671)
+++ head/graphics/bitmap/distinfo	(revision 508672)
@@ -1,3 +1,5 @@
-TIMESTAMP = 1558979256
+TIMESTAMP = 1565557083
 SHA256 (ArashPartow-bitmap-g20181222-b02297f_GH0.tar.gz) = 9d6dd560d0bd01e78ebd08f7828249b96ad7b43e4a3589b54d62831d97c801f0
 SIZE (ArashPartow-bitmap-g20181222-b02297f_GH0.tar.gz) = 52230
+SHA256 (db80ca605a952e6a8ccd42eba3fcc5b40fba5640.patch) = 09fb91e59b7c75d57e4f4473ed07dfa7bf9ba54cb65921ff47bf9dcc999a334f
+SIZE (db80ca605a952e6a8ccd42eba3fcc5b40fba5640.patch) = 4745