-options can now be completed with tabulator. There's also automatic

completion for them, like instead of /join -invite you can use just
/join -i.


git-svn-id: http://svn.irssi.org/repos/irssi/trunk@385 dbcabf3a-b0e7-0310-adc4-f8d773084564

src/fe-common/core/module-formats.c

@@ -91,6 +91,9 @@ FORMAT_REC fecommon_core_formats[] = {
 
 	{ "not_toggle", "Value must be either ON, OFF or TOGGLE", 0 },
 	{ "perl_error", "Perl error: $0", 1, { 0 } },
+	{ "option_unknown", "Unknown option: $0", 1, { 0 } },
+	{ "option_ambiguous", "Ambiguous option: $0", 1, { 0 } },
+	{ "option_missing_arg", "Missing required argument for: $0", 1, { 0 } },
 
 	{ NULL, NULL, 0 }
 };