submodule-config: rename commit_sha1 to treeish_name

diff --git a/git.c b/git.c
index 03151f51e6e04f5c8f14d4ce86e573dca886bcab..efa1059fe060e413336ed4a02ac01d9381b34323 100644 (file)
--- a/git.c
+++ b/git.c
@@ -35,8 +35,7 @@ static void save_env_before_alias(void)
        orig_cwd = xgetcwd();
        for (i = 0; i < ARRAY_SIZE(env_names); i++) {
                orig_env[i] = getenv(env_names[i]);
-               if (orig_env[i])
-                       orig_env[i] = xstrdup(orig_env[i]);
+               orig_env[i] = xstrdup_or_null(orig_env[i]);
        }
 }
 
@@ -164,6 +163,20 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
                        setenv(GIT_WORK_TREE_ENVIRONMENT, cmd, 1);
                        if (envchanged)
                                *envchanged = 1;
+               } else if (!strcmp(cmd, "--super-prefix")) {
+                       if (*argc < 2) {
+                               fprintf(stderr, "No prefix given for --super-prefix.\n" );
+                               usage(git_usage_string);
+                       }
+                       setenv(GIT_SUPER_PREFIX_ENVIRONMENT, (*argv)[1], 1);
+                       if (envchanged)
+                               *envchanged = 1;
+                       (*argv)++;
+                       (*argc)--;
+               } else if (skip_prefix(cmd, "--super-prefix=", &cmd)) {
+                       setenv(GIT_SUPER_PREFIX_ENVIRONMENT, cmd, 1);
+                       if (envchanged)
+                               *envchanged = 1;
                } else if (!strcmp(cmd, "--bare")) {
                        char *cwd = xgetcwd();
                        is_bare_repository_cfg = 1;
@@ -310,6 +323,7 @@ static int handle_alias(int *argcp, const char ***argv)
  * RUN_SETUP for reading from the configuration file.
  */
 #define NEED_WORK_TREE         (1<<3)
+#define SUPPORT_SUPER_PREFIX   (1<<4)
 
 struct cmd_struct {
        const char *cmd;
@@ -344,6 +358,13 @@ static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
        }
        commit_pager_choice();
 
+       if (!help && get_super_prefix()) {
+               if (!(p->option & SUPPORT_SUPER_PREFIX))
+                       die("%s doesn't support --super-prefix", p->cmd);
+               if (prefix)
+                       die("can't use --super-prefix from a subdirectory");
+       }
+
        if (!help && p->option & NEED_WORK_TREE)
                setup_work_tree();
 
@@ -421,7 +442,7 @@ static struct cmd_struct commands[] = {
        { "init-db", cmd_init_db },
        { "interpret-trailers", cmd_interpret_trailers, RUN_SETUP_GENTLY },
        { "log", cmd_log, RUN_SETUP },
-       { "ls-files", cmd_ls_files, RUN_SETUP },
+       { "ls-files", cmd_ls_files, RUN_SETUP | SUPPORT_SUPER_PREFIX },
        { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY },
        { "ls-tree", cmd_ls_tree, RUN_SETUP },
        { "mailinfo", cmd_mailinfo },
@@ -522,21 +543,34 @@ static void strip_extension(const char **argv)
 
 static void handle_builtin(int argc, const char **argv)
 {
+       struct argv_array args = ARGV_ARRAY_INIT;
        const char *cmd;
        struct cmd_struct *builtin;
 
        strip_extension(argv);
        cmd = argv[0];
 
-       /* Turn "git cmd --help" into "git help cmd" */
+       /* Turn "git cmd --help" into "git help --exclude-guides cmd" */
        if (argc > 1 && !strcmp(argv[1], "--help")) {
+               int i;
+
                argv[1] = argv[0];
                argv[0] = cmd = "help";
+
+               for (i = 0; i < argc; i++) {
+                       argv_array_push(&args, argv[i]);
+                       if (!i)
+                               argv_array_push(&args, "--exclude-guides");
+               }
+
+               argc++;
+               argv = args.argv;
        }
 
        builtin = get_builtin(cmd);
        if (builtin)
                exit(run_builtin(builtin, argc, argv));
+       argv_array_clear(&args);
 }
 
 static void execv_dashed_external(const char **argv)
@@ -545,6 +579,9 @@ static void execv_dashed_external(const char **argv)
        const char *tmp;
        int status;
 
+       if (get_super_prefix())
+               die("%s doesn't support --super-prefix", argv[0]);
+
        if (use_pager == -1)
                use_pager = check_pager_config(argv[0]);
        commit_pager_choice();
@@ -609,48 +646,15 @@ static int run_argv(int *argcp, const char ***argv)
        return done_alias;
 }
 
-/*
- * Many parts of Git have subprograms communicate via pipe, expect the
- * upstream of a pipe to die with SIGPIPE when the downstream of a
- * pipe does not need to read all that is written.  Some third-party
- * programs that ignore or block SIGPIPE for their own reason forget
- * to restore SIGPIPE handling to the default before spawning Git and
- * break this carefully orchestrated machinery.
- *
- * Restore the way SIGPIPE is handled to default, which is what we
- * expect.
- */
-static void restore_sigpipe_to_default(void)
-{
-       sigset_t unblock;
-
-       sigemptyset(&unblock);
-       sigaddset(&unblock, SIGPIPE);
-       sigprocmask(SIG_UNBLOCK, &unblock, NULL);
-       signal(SIGPIPE, SIG_DFL);
-}
-
-int main(int argc, char **av)
+int cmd_main(int argc, const char **argv)
 {
-       const char **argv = (const char **) av;
        const char *cmd;
        int done_help = 0;
 
-       cmd = git_extract_argv0_path(argv[0]);
+       cmd = argv[0];
        if (!cmd)
                cmd = "git-help";
 
-       /*
-        * Always open file descriptors 0/1/2 to avoid clobbering files
-        * in die().  It also avoids messing up when the pipes are dup'ed
-        * onto stdin/stdout/stderr in the child processes we spawn.
-        */
-       sanitize_stdfds();
-
-       restore_sigpipe_to_default();
-
-       git_setup_gettext();
-
        trace_command_performance(argv);
 
        /*