Index: head/devel/rebar/Makefile
===================================================================
--- head/devel/rebar/Makefile	(revision 387476)
+++ head/devel/rebar/Makefile	(revision 387477)
@@ -1,23 +1,40 @@
 # Created by: Kubilay Kocak <koobs@FreeBSD.org>
 # $FreeBSD$
 
 PORTNAME=	rebar
 PORTVERSION=	2.5.1
 CATEGORIES=	devel
 
 MAINTAINER=	koobs@FreeBSD.org
 COMMENT=	Build-tool for Erlang that follows OTP principles
 
 LICENSE=	APACHE20
 
 BUILD_DEPENDS=	${LOCALBASE}/bin/escript:${PORTSDIR}/lang/erlang
 RUN_DEPENDS:=	${BUILD_DEPENDS}
 
+OPTIONS_DEFINE=	BASH ZSH
+
 USE_GITHUB=	yes
 
 PLIST_FILES=	bin/${PORTNAME}
 
+BASH_PLIST_FILES=	share/bash-completion/completions/rebar
+ZSH_PLIST_FILES=	share/zsh/site-functions/_rebar
+
+.include <bsd.port.options.mk>
+
 do-install:
 	${INSTALL_SCRIPT} ${WRKSRC}/${PORTNAME} ${STAGEDIR}${PREFIX}/bin/
+.if ${PORT_OPTIONS:MBASH}
+	@${MKDIR} ${STAGEDIR}${PREFIX}/share/bash-completion/completions
+	${INSTALL_DATA} ${WRKSRC}/priv/shell-completion/bash/rebar \
+		${STAGEDIR}${PREFIX}/share/bash-completion/completions/rebar
+.endif
+.if ${PORT_OPTIONS:MZSH}
+	@${MKDIR} ${STAGEDIR}${PREFIX}/share/zsh/site-functions/
+	${INSTALL_DATA} ${WRKSRC}/priv/shell-completion/zsh/_rebar \
+		${STAGEDIR}${PREFIX}/share/zsh/site-functions/
+.endif
 
 .include <bsd.port.mk>