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remote.c: introduce branch_get_upstream helper

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All of the information needed to find the @{upstream} of a
branch is included in the branch struct, but callers have to
navigate a series of possible-NULL values to get there.
Let's wrap that logic up in an easy-to-read helper.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King
2015-05-21 00:45:28 -04:00
committed by Junio C Hamano
parent 8770e6fbb2
commit a9f9f8cc1f
5 changed files with 23 additions and 16 deletions
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7
remote.h
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@ -218,6 +218,13 @@ const char *pushremote_for_branch(struct branch *branch, int *explicit);
int branch_has_merge_config(struct branch *branch);
int branch_merge_matches(struct branch *, int n, const char *);
/**
* Return the fully-qualified refname of the tracking branch for `branch`.
* I.e., what "branch@{upstream}" would give you. Returns NULL if no
* upstream is defined.
*/
const char *branch_get_upstream(struct branch *branch);
/* Flags to match_refs. */
enum match_refs_flags {
MATCH_REFS_NONE = 0,