ignore (C.dml (getDb ()) ($`DELETE FROM SupSubscription
WHERE usr = ^(C.intToSql usr) AND cat = ^(C.intToSql cat)`))
-val okChars = [#" ", #"-", #".", #"!", #"?", #":", #";", #"'", #"\"", #"/"]
+val okChars = [#" ", #"-", #".", #"!", #"?", #":", #";", #"'", #"\"", #"/", #"(", #")", #"{", #"}", #"[", #"]"]
fun validTitle s = CharVector.exists (fn ch => not (Char.isSpace ch)) s
andalso CharVector.all (fn ch => Char.isAlphaNum ch orelse List.exists (fn ch' => ch = ch') okChars) s