From 1a0ca5e358c1af14160e610e346c706e5dccf535 Mon Sep 17 00:00:00 2001
From: Karthik Nayak <karthik.188@gmail.com>
Date: Tue, 10 Jan 2017 14:19:48 +0530
Subject: ref-filter: modify the 'lstrip=<N>' option to work with negative
 '<N>'

Currently the 'lstrip=<N>' option only takes a positive value '<N>'
and strips '<N>' slash-separated path components from the left. Modify
the 'lstrip' option to also take a negative number '<N>' which would
strip from the left as necessary and _leave_ behind only 'N'
slash-separated path components from the right-most end.

For e.g. %(refname:lstrip=-1) would make 'foo/goo/abc' into 'abc'.

Add documentation and tests for the same.

Signed-off-by: Karthik Nayak <Karthik.188@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 t/t6300-for-each-ref.sh | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

(limited to 't')

diff --git a/t/t6300-for-each-ref.sh b/t/t6300-for-each-ref.sh
index d3d1a97db9..203cfaa156 100755
--- a/t/t6300-for-each-ref.sh
+++ b/t/t6300-for-each-ref.sh
@@ -53,12 +53,16 @@ test_atom head refname refs/heads/master
 test_atom head refname:short master
 test_atom head refname:lstrip=1 heads/master
 test_atom head refname:lstrip=2 master
+test_atom head refname:lstrip=-1 master
+test_atom head refname:lstrip=-2 heads/master
 test_atom head upstream refs/remotes/origin/master
 test_atom head upstream:short origin/master
 test_atom head upstream:lstrip=2 origin/master
+test_atom head upstream:lstrip=-2 origin/master
 test_atom head push refs/remotes/myfork/master
 test_atom head push:short myfork/master
 test_atom head push:lstrip=1 remotes/myfork/master
+test_atom head push:lstrip=-1 master
 test_atom head objecttype commit
 test_atom head objectsize 171
 test_atom head objectname $(git rev-parse refs/heads/master)
@@ -141,12 +145,6 @@ test_expect_success 'Check invalid atoms names are errors' '
 	test_must_fail git for-each-ref --format="%(INVALID)" refs/heads
 '
 
-test_expect_success 'arguments to :lstrip must be positive integers' '
-	test_must_fail git for-each-ref --format="%(refname:lstrip=0)" &&
-	test_must_fail git for-each-ref --format="%(refname:lstrip=-1)" &&
-	test_must_fail git for-each-ref --format="%(refname:lstrip=foo)"
-'
-
 test_expect_success 'Check format specifiers are ignored in naming date atoms' '
 	git for-each-ref --format="%(authordate)" refs/heads &&
 	git for-each-ref --format="%(authordate:default) %(authordate)" refs/heads &&
@@ -624,10 +622,12 @@ test_expect_success 'Verify usage of %(symref:short) atom' '
 
 cat >expected <<EOF
 master
+heads/master
 EOF
 
 test_expect_success 'Verify usage of %(symref:lstrip) atom' '
 	git for-each-ref --format="%(symref:lstrip=2)" refs/heads/sym > actual &&
+	git for-each-ref --format="%(symref:lstrip=-2)" refs/heads/sym >> actual &&
 	test_cmp expected actual
 '
 
-- 
cgit v1.2.3