} else if (dir_diff)
die(_("options '%s' and '%s' cannot be used together"), "--dir-diff", "--no-index");
- if (use_gui_tool + !!difftool_cmd + !!extcmd > 1)
- die(_("options '%s', '%s', and '%s' cannot be used together"), "--gui", "--tool", "--extcmd");
+ die_for_incompatible_opt3(use_gui_tool, "--gui",
+ !!difftool_cmd, "--tool",
+ !!extcmd, "--extcmd");
if (use_gui_tool)
setenv("GIT_MERGETOOL_GUI", "true", 1);