user-manual: insert earlier of mention content-addressable architecture

diff --git a/builtin-show-branch.c b/builtin-show-branch.c
index 536245e7d3815c087906b56d2af503fa8e4451a9..0d94e40df893ee6ecf146e8987c0696cb4874a36 100644 (file)
--- a/builtin-show-branch.c
+++ b/builtin-show-branch.c
@@ -662,13 +662,13 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
        }
        ac--; av++;
 
-       if (!!extra || !!reflog) {
+       if (extra || reflog) {
                /* "listing" mode is incompatible with
                 * independent nor merge-base modes.
                 */
                if (independent || merge_base)
                        usage(show_branch_usage);
-               if (!!reflog && ((0 < extra) || all_heads || all_remotes))
+               if (reflog && ((0 < extra) || all_heads || all_remotes))
                        /*
                         * Asking for --more in reflog mode does not
                         * make sense.  --list is Ok.
@@ -682,15 +682,25 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
        if (ac + all_heads + all_remotes == 0)
                all_heads = 1;
 
-       if (all_heads + all_remotes)
-               snarf_refs(all_heads, all_remotes);
        if (reflog) {
                unsigned char sha1[20];
                char nth_desc[256];
                char *ref;
                int base = 0;
+
+               if (ac == 0) {
+                       static const char *fake_av[2];
+                       const char *refname;
+
+                       refname = resolve_ref("HEAD", sha1, 1, NULL);
+                       fake_av[0] = xstrdup(refname);
+                       fake_av[1] = NULL;
+                       av = fake_av;
+                       ac = 1;
+               }
                if (ac != 1)
                        die("--reflog option needs one branch name");
+
                if (MAX_REVS < reflog)
                        die("Only %d entries can be shown at one time.",
                            MAX_REVS);
@@ -735,6 +745,8 @@ int cmd_show_branch(int ac, const char **av, const char *prefix)
                        append_ref(nth_desc, sha1, 1);
                }
        }
+       else if (all_heads + all_remotes)
+               snarf_refs(all_heads, all_remotes);
        else {
                while (0 < ac) {
                        append_one_rev(*av);