Add branch --set-upstream

diff --git a/builtin-push.c b/builtin-push.c
index dcfb53f1884d2648993214b4378afbd1f83760b0..28a26e7db2a86bf1514cdd54f9735c0be146dce7 100644 (file)
--- a/builtin-push.c
+++ b/builtin-push.c
@@ -15,6 +15,7 @@ static const char * const push_usage[] = {
 };
 
 static int thin;
+static int deleterefs;
 static const char *receivepack;
 
 static const char **refspec;
@@ -39,11 +40,24 @@ static void set_refspecs(const char **refs, int nr)
                        if (nr <= ++i)
                                die("tag shorthand without <tag>");
                        len = strlen(refs[i]) + 11;
-                       tag = xmalloc(len);
-                       strcpy(tag, "refs/tags/");
+                       if (deleterefs) {
+                               tag = xmalloc(len+1);
+                               strcpy(tag, ":refs/tags/");
+                       } else {
+                               tag = xmalloc(len);
+                               strcpy(tag, "refs/tags/");
+                       }
                        strcat(tag, refs[i]);
                        ref = tag;
-               }
+               } else if (deleterefs && !strchr(ref, ':')) {
+                       char *delref;
+                       int len = strlen(ref)+1;
+                       delref = xmalloc(len);
+                       strcpy(delref, ":");
+                       strcat(delref, ref);
+                       ref = delref;
+               } else if (deleterefs)
+                       die("--delete only accepts plain target ref names");
                add_refspec(ref);
        }
 }
@@ -111,8 +125,8 @@ static int push_with_options(struct transport *transport, int flags)
 
        if (nonfastforward && advice_push_nonfastforward) {
                printf("To prevent you from losing history, non-fast-forward updates were rejected\n"
-                      "Merge the remote changes before pushing again.  See the 'non-fast-forward'\n"
-                      "section of 'git push --help' for details.\n");
+                      "Merge the remote changes before pushing again.  See the 'Note about\n"
+                      "fast-forwards' section of 'git push --help' for details.\n");
        }
 
        return 1;
@@ -196,6 +210,7 @@ int cmd_push(int argc, const char **argv, const char *prefix)
                OPT_BIT( 0 , "all", &flags, "push all refs", TRANSPORT_PUSH_ALL),
                OPT_BIT( 0 , "mirror", &flags, "mirror all refs",
                            (TRANSPORT_PUSH_MIRROR|TRANSPORT_PUSH_FORCE)),
+               OPT_BOOLEAN( 0, "delete", &deleterefs, "delete refs"),
                OPT_BOOLEAN( 0 , "tags", &tags, "push tags (can't be used with --all or --mirror)"),
                OPT_BIT('n' , "dry-run", &flags, "dry run", TRANSPORT_PUSH_DRY_RUN),
                OPT_BIT( 0,  "porcelain", &flags, "machine-readable output", TRANSPORT_PUSH_PORCELAIN),
@@ -209,6 +224,11 @@ int cmd_push(int argc, const char **argv, const char *prefix)
        git_config(git_default_config, NULL);
        argc = parse_options(argc, argv, prefix, options, push_usage, 0);
 
+       if (deleterefs && (tags || (flags & (TRANSPORT_PUSH_ALL | TRANSPORT_PUSH_MIRROR))))
+               die("--delete is incompatible with --all, --mirror and --tags");
+       if (deleterefs && argc < 2)
+               die("--delete doesn't make sense without any refs");
+
        if (tags)
                add_refspec("refs/tags/*");