Merge branch 'jc/merge-base' (early part)
[git/git.git] / git.c
diff --git a/git.c b/git.c
index e7bc79a..4dd1967 100644 (file)
--- a/git.c
+++ b/git.c
@@ -159,6 +159,16 @@ static int handle_alias(int *argcp, const char ***argv)
        alias_command = (*argv)[0];
        git_config(git_alias_config);
        if (alias_string) {
+               if (alias_string[0] == '!') {
+                       trace_printf("trace: alias to shell cmd: %s => %s\n",
+                                    alias_command, alias_string + 1);
+                       ret = system(alias_string + 1);
+                       if (ret >= 0 && WIFEXITED(ret) &&
+                           WEXITSTATUS(ret) != 127)
+                               exit(WEXITSTATUS(ret));
+                       die("Failed to run '%s' when expanding alias '%s'\n",
+                           alias_string + 1, alias_command);
+               }
                count = split_cmdline(alias_string, &new_argv);
                option_count = handle_options(&new_argv, &count);
                memmove(new_argv - option_count, new_argv,
@@ -199,6 +209,11 @@ const char git_version_string[] = GIT_VERSION;
 
 #define RUN_SETUP      (1<<0)
 #define USE_PAGER      (1<<1)
+/*
+ * require working tree to be present -- anything uses this needs
+ * RUN_SETUP for reading from the configuration file.
+ */
+#define NOT_BARE       (1<<2)
 
 static void handle_internal_command(int argc, const char **argv, char **envp)
 {
@@ -208,26 +223,29 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
                int (*fn)(int, const char **, const char *);
                int option;
        } commands[] = {
-               { "add", cmd_add, RUN_SETUP },
-               { "annotate", cmd_annotate, },
+               { "add", cmd_add, RUN_SETUP | NOT_BARE },
+               { "annotate", cmd_annotate, USE_PAGER },
                { "apply", cmd_apply },
                { "archive", cmd_archive },
-               { "blame", cmd_blame, RUN_SETUP | USE_PAGER },
+               { "blame", cmd_blame, RUN_SETUP },
                { "branch", cmd_branch, RUN_SETUP },
                { "cat-file", cmd_cat_file, RUN_SETUP },
                { "checkout-index", cmd_checkout_index, RUN_SETUP },
                { "check-ref-format", cmd_check_ref_format },
                { "cherry", cmd_cherry, RUN_SETUP },
                { "commit-tree", cmd_commit_tree, RUN_SETUP },
+               { "config", cmd_config },
                { "count-objects", cmd_count_objects, RUN_SETUP },
+               { "describe", cmd_describe, RUN_SETUP },
                { "diff", cmd_diff, RUN_SETUP | USE_PAGER },
                { "diff-files", cmd_diff_files, RUN_SETUP },
                { "diff-index", cmd_diff_index, RUN_SETUP },
-               { "diff-stages", cmd_diff_stages, RUN_SETUP },
                { "diff-tree", cmd_diff_tree, RUN_SETUP },
                { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP },
                { "for-each-ref", cmd_for_each_ref, RUN_SETUP },
                { "format-patch", cmd_format_patch, RUN_SETUP },
+               { "fsck", cmd_fsck, RUN_SETUP },
+               { "fsck-objects", cmd_fsck, RUN_SETUP },
                { "get-tar-commit-id", cmd_get_tar_commit_id },
                { "grep", cmd_grep, RUN_SETUP },
                { "help", cmd_help },
@@ -240,7 +258,7 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
                { "mailsplit", cmd_mailsplit },
                { "merge-base", cmd_merge_base, RUN_SETUP },
                { "merge-file", cmd_merge_file },
-               { "mv", cmd_mv, RUN_SETUP },
+               { "mv", cmd_mv, RUN_SETUP | NOT_BARE },
                { "name-rev", cmd_name_rev, RUN_SETUP },
                { "pack-objects", cmd_pack_objects, RUN_SETUP },
                { "pickaxe", cmd_blame, RUN_SETUP | USE_PAGER },
@@ -249,12 +267,12 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
                { "push", cmd_push, RUN_SETUP },
                { "read-tree", cmd_read_tree, RUN_SETUP },
                { "reflog", cmd_reflog, RUN_SETUP },
-               { "repo-config", cmd_repo_config },
+               { "repo-config", cmd_config },
                { "rerere", cmd_rerere, RUN_SETUP },
                { "rev-list", cmd_rev_list, RUN_SETUP },
                { "rev-parse", cmd_rev_parse, RUN_SETUP },
-               { "rm", cmd_rm, RUN_SETUP },
-               { "runstatus", cmd_runstatus, RUN_SETUP },
+               { "rm", cmd_rm, RUN_SETUP | NOT_BARE },
+               { "runstatus", cmd_runstatus, RUN_SETUP | NOT_BARE },
                { "shortlog", cmd_shortlog, RUN_SETUP | USE_PAGER },
                { "show-branch", cmd_show_branch, RUN_SETUP },
                { "show", cmd_show, RUN_SETUP | USE_PAGER },
@@ -291,6 +309,9 @@ static void handle_internal_command(int argc, const char **argv, char **envp)
                        prefix = setup_git_directory();
                if (p->option & USE_PAGER)
                        setup_pager();
+               if ((p->option & NOT_BARE) &&
+                               (is_bare_repository() || is_inside_git_dir()))
+                       die("%s must be run in a work tree", cmd);
                trace_argv_printf(argv, argc, "trace: built-in: git");
 
                exit(p->fn(argc, argv, prefix));
@@ -376,8 +397,15 @@ int main(int argc, const char **argv, char **envp)
                done_alias = 1;
        }
 
-       if (errno == ENOENT)
+       if (errno == ENOENT) {
+               if (done_alias) {
+                       fprintf(stderr, "Expansion of alias '%s' failed; "
+                               "'%s' is not a git-command\n",
+                               cmd, argv[0]);
+                       exit(1);
+               }
                help_unknown_cmd(cmd);
+       }
 
        fprintf(stderr, "Failed to run command '%s': %s\n",
                cmd, strerror(errno));