symbolic ref: refuse non-ref targets in HEAD

diff --git a/git.c b/git.c
index 5582c515ac04609a338de1d2d5e510e7e7c4914d..940a498962ceb06a1dba85547d61ad62bb81a499 100644 (file)
--- a/git.c
+++ b/git.c
@@ -195,8 +195,8 @@ static int handle_alias(int *argcp, const char ***argv)
                ret = 1;
        }
 
-       if (subdir)
-               chdir(subdir);
+       if (subdir && chdir(subdir))
+               die("Cannot change to %s: %s", subdir, strerror(errno));
 
        errno = saved_errno;
 
@@ -266,6 +266,7 @@ static void handle_internal_command(int argc, const char **argv)
        const char *cmd = argv[0];
        static struct cmd_struct commands[] = {
                { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE },
+               { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE },
                { "annotate", cmd_annotate, RUN_SETUP },
                { "apply", cmd_apply },
                { "archive", cmd_archive },
@@ -330,6 +331,7 @@ static void handle_internal_command(int argc, const char **argv)
                { "prune-packed", cmd_prune_packed, RUN_SETUP },
                { "push", cmd_push, RUN_SETUP },
                { "read-tree", cmd_read_tree, RUN_SETUP },
+               { "receive-pack", cmd_receive_pack },
                { "reflog", cmd_reflog, RUN_SETUP },
                { "remote", cmd_remote, RUN_SETUP },
                { "repo-config", cmd_config },
@@ -366,7 +368,7 @@ static void handle_internal_command(int argc, const char **argv)
        if (sizeof(ext) > 1) {
                i = strlen(argv[0]) - strlen(ext);
                if (i > 0 && !strcmp(argv[0] + i, ext)) {
-                       char *argv0 = strdup(argv[0]);
+                       char *argv0 = xstrdup(argv[0]);
                        argv[0] = cmd = argv0;
                        argv0[i] = '\0';
                }
@@ -388,10 +390,9 @@ static void handle_internal_command(int argc, const char **argv)
 
 static void execv_dashed_external(const char **argv)
 {
-       struct strbuf cmd;
+       struct strbuf cmd = STRBUF_INIT;
        const char *tmp;
 
-       strbuf_init(&cmd, 0);
        strbuf_addf(&cmd, "git-%s", argv[0]);
 
        /*
@@ -501,7 +502,9 @@ int main(int argc, const char **argv)
                                cmd, argv[0]);
                        exit(1);
                }
-               help_unknown_cmd(cmd);
+               argv[0] = help_unknown_cmd(cmd);
+               handle_internal_command(argc, argv);
+               execv_dashed_external(argv);
        }
 
        fprintf(stderr, "Failed to run command '%s': %s\n",