config: "git config --get-urlmatch" parses section.<url>.key

Using the same urlmatch_config_entry() infrastructure, add a new
mode "--get-urlmatch" to the "git config" command, to learn values
for the "virtual" two-level variables customized for the specific
URL.

    git config [--<type>] --get-urlmatch <section>[.<key>] <url>

With <section>.<key> fully specified, the configuration data for
<section>.<urlpattern>.<key> for <urlpattern> that best matches the
given <url> is sought (and if not found, <section>.<key> is used)
and reported.  For example, with this configuration:

    [http]
        sslVerify
    [http "https://weak.example.com"]
        cookieFile = /tmp/cookie.txt
        sslVerify = false

You would get

    $ git config --bool --get-urlmatch http.sslVerify https://good.example.com
    true
    $ git config --bool --get-urlmatch http.sslVerify https://weak.example.com
    false

With only <section> specified, you can get a list of all variables
in the section with their values that apply to the given URL.  E.g

    $ git config --get-urlmatch http https://weak.example.com
    http.cookiefile /tmp/cookie.txt
    http.sslverify false

Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/t/t1300-repo-config.sh b/t/t1300-repo-config.sh
index c4a7d84f4..c23f4781e 100755
--- a/t/t1300-repo-config.sh
+++ b/t/t1300-repo-config.sh
@@ -1087,6 +1087,31 @@ test_expect_success 'barf on incomplete string' '
 	grep " line 3 " error
 '
 
+test_expect_success 'urlmatch' '
+	cat >.git/config <<-\EOF &&
+	[http]
+		sslVerify
+	[http "https://weak.example.com"]
+		sslVerify = false
+		cookieFile = /tmp/cookie.txt
+	EOF
+
+	echo true >expect &&
+	git config --bool --get-urlmatch http.SSLverify https://good.example.com >actual &&
+	test_cmp expect actual &&
+
+	echo false >expect &&
+	git config --bool --get-urlmatch http.sslverify https://weak.example.com >actual &&
+	test_cmp expect actual &&
+
+	{
+		echo http.cookiefile /tmp/cookie.txt &&
+		echo http.sslverify false
+	} >expect &&
+	git config --get-urlmatch HTTP https://weak.example.com >actual &&
+	test_cmp expect actual
+'
+
 # good section hygiene
 test_expect_failure 'unsetting the last key in a section removes header' '
 	cat >.git/config <<-\EOF &&