abspath: add absolute_pathdup()

diff --git a/git.c b/git.c
index 968a8a464588f10c5c1564440e06d5e5afe8d37a..7acf290e2385ab35c10db4dd318af51106b12b7b 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]);
        }
 }
 
@@ -609,47 +608,19 @@ 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)
+int cmd_main(int argc, const char **argv)
 {
-       sigset_t unblock;
-
-       sigemptyset(&unblock);
-       sigaddset(&unblock, SIGPIPE);
-       sigprocmask(SIG_UNBLOCK, &unblock, NULL);
-       signal(SIGPIPE, SIG_DFL);
-}
-
-int main(int argc, char **av)
-{
-       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();
+       else {
+               const char *slash = find_last_dir_sep(cmd);
+               if (slash)
+                       cmd = slash + 1;
+       }
 
        trace_command_performance(argv);