Introduce <branch>@{upstream} notation
A new notation '<branch>@{upstream}' refers to the branch <branch> is set
to build on top of. Missing <branch> (i.e. '@{upstream}') defaults to the
current branch.
This allows you to run, for example,
for l in list of local branches
do
git log --oneline --left-right $l...$l@{upstream}
done
to inspect each of the local branches you are interested in for the
divergence from its upstream.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/sha1_name.c b/sha1_name.c
index 44bb62d..fb4e214 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -5,6 +5,7 @@
#include "blob.h"
#include "tree-walk.h"
#include "refs.h"
+#include "remote.h"
static int find_short_object_filename(int len, const char *name, unsigned char *sha1)
{
@@ -238,9 +239,24 @@
return slash;
}
+static inline int tracked_suffix(const char *string, int len)
+{
+ const char *suffix[] = { "@{upstream}", "@{u}" };
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(suffix); i++) {
+ int suffix_len = strlen(suffix[i]);
+ if (len >= suffix_len && !memcmp(string + len - suffix_len,
+ suffix[i], suffix_len))
+ return suffix_len;
+ }
+ return 0;
+}
+
/*
* *string and *len will only be substituted, and *string returned (for
- * later free()ing) if the string passed in is of the form @{-<n>}.
+ * later free()ing) if the string passed in is of the form @{-<n>} or
+ * of the form <branch>@{upstream}.
*/
static char *substitute_branch_name(const char **string, int *len)
{
@@ -254,6 +270,21 @@
return (char *)*string;
}
+ ret = tracked_suffix(*string, *len);
+ if (ret) {
+ char *ref = xstrndup(*string, *len - ret);
+ struct branch *tracking = branch_get(*ref ? ref : NULL);
+
+ if (!tracking)
+ die ("No tracking branch found for '%s'", ref);
+ free(ref);
+ if (tracking->merge && tracking->merge[0]->dst) {
+ *string = xstrdup(tracking->merge[0]->dst);
+ *len = strlen(*string);
+ return (char *)*string;
+ }
+ }
+
return NULL;
}
@@ -340,8 +371,10 @@
if (len && str[len-1] == '}') {
for (at = len-2; at >= 0; at--) {
if (str[at] == '@' && str[at+1] == '{') {
- reflog_len = (len-1) - (at+2);
- len = at;
+ if (!tracked_suffix(str + at, len - at)) {
+ reflog_len = (len-1) - (at+2);
+ len = at;
+ }
break;
}
}
