Update to 1.29, which adds some new options:

--verbatim-files-from, --no-verbatim-files-from
--owner-map=FILE, --group-map=FILE
--clamp-mtime

archivers/gtar/Makefile

@@ -1,9 +1,8 @@
-# $OpenBSD: Makefile,v 1.77 2016/04/06 21:14:13 naddy Exp $
+# $OpenBSD: Makefile,v 1.78 2016/06/03 14:53:32 naddy Exp $
 
 COMMENT=	GNU version of the traditional tape archiver
 
-DISTNAME=	tar-1.28
-REVISION=	2
+DISTNAME=	tar-1.29
 PKGNAME=	g${DISTNAME}
 CATEGORIES=	archivers
 HOMEPAGE=	https://www.gnu.org/software/tar/
@@ -46,10 +45,15 @@ LIB_DEPENDS+=	devel/gettext
 LDSTATIC=
 .endif
 
-# Test 87 is known to fail because getcwd(3) fails if the
-# parent directory is unreadable.
+# autom4te
+TEST_DEPENDS=	devel/autoconf/2.69
+TEST_ENV=	AUTOCONF_VERSION=2.69
+# without GNU m4, commands with leading parenthesis are mis-expanded
+TEST_DEPENDS+=	devel/m4
+TEST_ENV+=	M4=${LOCALBASE}/bin/gm4
 
-# Tests 161 163 are known to fail because path resolution of ".."
-# in a removed directory fails.
+# do not rebuild tar.info
+post-patch:
+	touch -r ${WRKSRC}/doc/stamp-vti ${WRKSRC}/configure
 
 .include <bsd.port.mk>

archivers/gtar/distinfo

@@ -1,2 +1,2 @@
-SHA256 (tar-1.28.tar.xz) = ZO6NiOwbR6CWEDNJP5GdJyGMQbWAE4/WgCMnRir/IvI=
-SIZE (tar-1.28.tar.xz) = 1966884
+SHA256 (tar-1.29.tar.xz) = QC3P0AIv16HyxWEfXGGvHNhJEKdgpEpojhjdv/Tp8CQ=
+SIZE (tar-1.29.tar.xz) = 1996000

archivers/gtar/patches/patch-configure

@@ -1,7 +1,7 @@
-$OpenBSD: patch-configure,v 1.15 2014/08/09 19:46:19 naddy Exp $
---- configure.orig	Sun Jul 27 22:33:47 2014
-+++ configure	Mon Jul 28 17:36:56 2014
-@@ -35613,7 +35613,7 @@ fi
+$OpenBSD: patch-configure,v 1.16 2016/06/03 14:53:32 naddy Exp $
+--- configure.orig	Mon May 16 10:52:00 2016
++++ configure	Mon May 30 17:50:19 2016
+@@ -35630,7 +35630,7 @@ fi
  $as_echo "$acl_cv_rpath" >&6; }
    wl="$acl_cv_wl"
    acl_libext="$acl_cv_libext"

archivers/gtar/patches/patch-tests_numeric_at

@@ -0,0 +1,25 @@
+$OpenBSD: patch-tests_numeric_at,v 1.1 2016/06/03 14:53:32 naddy Exp $
+
+https://lists.gnu.org/archive/html/bug-tar/2016-06/txt9bP0DVvYnu.txt
+
+--- tests/numeric.at.orig	Fri Mar 18 18:23:55 2016
++++ tests/numeric.at	Thu Jun  2 22:14:10 2016
+@@ -27,13 +27,15 @@ tar $1 -vvf a dir |dnl
+ ])
+ 
+ AT_TAR_CHECK([
+-mkdir dir
+-genfile --file dir/file
+-
+ MYUID=$(id -u) || AT_SKIP_TEST
+ MYGID=$(id -g) || AT_SKIP_TEST
+ MYUSR=$(id -un) || AT_SKIP_TEST
+ MYGRP=$(id -gn) || AT_SKIP_TEST
++
++mkdir dir
++# Ensure correct group id on BSDs.
++chown :$MYGID dir >/dev/null 2>/dev/null
++genfile --file dir/file
+ 
+ TESTOP([--create])
+ TESTOP([--list])