git-push: accept tag <tag> as advertised.

The documentation talked about "git push $URL tag <tag>" as a short-hand
for refs/tags/<tag>:refs/tags/<tag> for a long time but that was never
the case (the short-hand was for "git fetch").  Instead of fixing the
documentation, just add a bit of code to match it since it is easy to do
and would make it more consistent.

Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/builtin-push.c b/builtin-push.c
index d23974e708cb744f75efbb9f1acbf37606e92b05..b7412e82937a240776cdda07da05797b0b2acb0b 100644 (file)
--- a/builtin-push.c
+++ b/builtin-push.c
@@ -57,11 +57,36 @@ static void expand_refspecs(void)
 static void set_refspecs(const char **refs, int nr)
 {
        if (nr) {
-               size_t bytes = nr * sizeof(char *);
-
-               refspec = xrealloc(refspec, bytes);
-               memcpy(refspec, refs, bytes);
-               refspec_nr = nr;
+               int pass;
+               for (pass = 0; pass < 2; pass++) {
+                       /* pass 0 counts and allocates, pass 1 fills */
+                       int i, cnt;
+                       for (i = cnt = 0; i < nr; i++) {
+                               if (!strcmp("tag", refs[i])) {
+                                       int len;
+                                       char *tag;
+                                       if (nr <= ++i)
+                                               die("tag <tag> shorthand without <tag>");
+                                       if (pass) {
+                                               len = strlen(refs[i]) + 11;
+                                               tag = xmalloc(len);
+                                               strcpy(tag, "refs/tags/");
+                                               strcat(tag, refs[i]);
+                                               refspec[cnt] = tag;
+                                       }
+                                       cnt++;
+                                       continue;
+                               }
+                               if (pass)
+                                       refspec[cnt] = refs[i];
+                               cnt++;
+                       }
+                       if (!pass) {
+                               size_t bytes = cnt * sizeof(char *);
+                               refspec_nr = cnt;
+                               refspec = xrealloc(refspec, bytes);
+                       }
+               }
        }
        expand_refspecs();
 }