submodule: add a helper to check if it is safe to write to .gitmodules

diff --git a/builtin/difftool.c b/builtin/difftool.c
index 3018e61d048dacd178200ce380e319ae302b5790..cdd585ca76d51f6d5dcca78a9e1dfa6f8102c476 100644 (file)
--- a/builtin/difftool.c
+++ b/builtin/difftool.c
@@ -703,7 +703,7 @@ int cmd_difftool(int argc, const char **argv, const char *prefix)
                        1, PARSE_OPT_NONEG | PARSE_OPT_HIDDEN),
                OPT_BOOL(0, "symlinks", &symlinks,
                         N_("use symlinks in dir-diff mode")),
-               OPT_STRING('t', "tool", &difftool_cmd, N_("<tool>"),
+               OPT_STRING('t', "tool", &difftool_cmd, N_("tool"),
                           N_("use the specified diff tool")),
                OPT_BOOL(0, "tool-help", &tool_help,
                         N_("print a list of diff tools that may be used with "
@@ -711,7 +711,7 @@ int cmd_difftool(int argc, const char **argv, const char *prefix)
                OPT_BOOL(0, "trust-exit-code", &trust_exit_code,
                         N_("make 'git-difftool' exit when an invoked diff "
                            "tool returns a non - zero exit code")),
-               OPT_STRING('x', "extcmd", &extcmd, N_("<command>"),
+               OPT_STRING('x', "extcmd", &extcmd, N_("command"),
                           N_("specify a custom command for viewing diffs")),
                OPT_END()
        };