fixup??? git: catch an attempt to run "git-foo"

This is needed to handle the case where `argv[0]` contains the full path
(which is the case on Windows) and the suffix `.exe` (which is also the
case on Windows).

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

git.c

@@ -870,7 +870,8 @@ int cmd_main(int argc, const char **argv)
 	 * that one cannot handle it.
 	 */
 	if (skip_prefix(cmd, "git-", &cmd)) {
-		warn_on_dashed_git(argv[0]);
+		strip_extension(&cmd);
+		warn_on_dashed_git(cmd);
 
 		argv[0] = cmd;
 		handle_builtin(argc, argv);

help.c

@@ -726,9 +726,12 @@ NORETURN void help_unknown_ref(const char *ref, const char *cmd,
 static struct cmdname_help *find_cmdname_help(const char *name)
 {
 	int i;
+	const char *p;
 
+	skip_prefix(name, "git-", &name);
 	for (i = 0; i < ARRAY_SIZE(command_list); i++) {
-		if (!strcmp(command_list[i].name, name))
+		if (skip_prefix(command_list[i].name, "git-", &p) &&
+		    !strcmp(p, name))
 			return &command_list[i];
 	}
 	return NULL;