git-branch: show detached HEAD

This makes git-branch show a detached HEAD as '* (no branch)'.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>

diff --git a/builtin-branch.c b/builtin-branch.c
index d3df5a57f127f44d7ff48a419d51ca108c7c9618..487965b54070c3b9313f2b843a5194bae913e084 100644 (file)
--- a/builtin-branch.c
+++ b/builtin-branch.c
@@ -275,7 +275,7 @@ static void print_ref_item(struct ref_item *item, int maxwidth, int verbose,
        }
 }
 
-static void print_ref_list(int kinds, int verbose, int abbrev)
+static void print_ref_list(int kinds, int detached, int verbose, int abbrev)
 {
        int i;
        struct ref_list ref_list;
@@ -286,8 +286,20 @@ static void print_ref_list(int kinds, int verbose, int abbrev)
 
        qsort(ref_list.list, ref_list.index, sizeof(struct ref_item), ref_cmp);
 
+       detached = (detached && (kinds & REF_LOCAL_BRANCH));
+       if (detached) {
+               struct ref_item item;
+               item.name = "(no branch)";
+               item.kind = REF_LOCAL_BRANCH;
+               hashcpy(item.sha1, head_sha1);
+               if (strlen(item.name) > ref_list.maxwidth)
+                             ref_list.maxwidth = strlen(item.name);
+               print_ref_item(&item, ref_list.maxwidth, verbose, abbrev, 1);
+       }
+
        for (i = 0; i < ref_list.index; i++) {
-               int current = (ref_list.list[i].kind == REF_LOCAL_BRANCH) &&
+               int current = !detached &&
+                       (ref_list.list[i].kind == REF_LOCAL_BRANCH) &&
                        !strcmp(ref_list.list[i].name, head);
                print_ref_item(&ref_list.list[i], ref_list.maxwidth, verbose,
                               abbrev, current);
@@ -367,7 +379,7 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 {
        int delete = 0, force_delete = 0, force_create = 0;
        int rename = 0, force_rename = 0;
-       int verbose = 0, abbrev = DEFAULT_ABBREV;
+       int verbose = 0, abbrev = DEFAULT_ABBREV, detached = 0;
        int reflog = 0;
        int kinds = REF_LOCAL_BRANCH;
        int i;
@@ -444,14 +456,19 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
        head = xstrdup(resolve_ref("HEAD", head_sha1, 0, NULL));
        if (!head)
                die("Failed to resolve HEAD as a valid ref.");
-       if (strncmp(head, "refs/heads/", 11))
-               die("HEAD not found below refs/heads!");
-       head += 11;
+       if (!strcmp(head, "HEAD")) {
+               detached = 1;
+       }
+       else {
+               if (strncmp(head, "refs/heads/", 11))
+                       die("HEAD not found below refs/heads!");
+               head += 11;
+       }
 
        if (delete)
                return delete_branches(argc - i, argv + i, force_delete, kinds);
        else if (i == argc)
-               print_ref_list(kinds, verbose, abbrev);
+               print_ref_list(kinds, detached, verbose, abbrev);
        else if (rename && (i == argc - 1))
                rename_branch(head, argv[i], force_rename);
        else if (rename && (i == argc - 2))