From 1768aaf01d3f57af8c4182d5887d219456f4a094 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ren=C3=A9=20Scharfe?= <l.s.r@web.de>
Date: Tue, 26 Nov 2019 16:18:28 +0100
Subject: push: use skip_prefix() instead of starts_with()
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Get rid of a magic number by using skip_prefix().

Signed-off-by: René Scharfe <l.s.r@web.de>
Acked-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/push.c b/builtin/push.c
index 843f5b2..6dbf0f0 100644
--- a/builtin/push.c
+++ b/builtin/push.c
@@ -64,6 +64,7 @@ static struct string_list push_options_config = STRING_LIST_INIT_DUP;
 static const char *map_refspec(const char *ref,
 			       struct remote *remote, struct ref *local_refs)
 {
+	const char *branch_name;
 	struct ref *matched = NULL;
 
 	/* Does "ref" uniquely name our ref? */
@@ -84,8 +85,8 @@ static const char *map_refspec(const char *ref,
 	}
 
 	if (push_default == PUSH_DEFAULT_UPSTREAM &&
-	    starts_with(matched->name, "refs/heads/")) {
-		struct branch *branch = branch_get(matched->name + 11);
+	    skip_prefix(matched->name, "refs/heads/", &branch_name)) {
+		struct branch *branch = branch_get(branch_name);
 		if (branch->merge_nr == 1 && branch->merge[0]->src) {
 			struct strbuf buf = STRBUF_INIT;
 			strbuf_addf(&buf, "%s:%s",
-- 
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