Add-on Prevent character abuse in thread titles

[trman]

I need an add on that prevents users from using repetitions of certain characters in thread titles. Such as !!!!!!!! at the end of their title to draw emphasis. Or ...........

Ideally I could select the character to limit and the number of times it could be repeated. If the user repeated it beyond the allowed number the extra repeated characters would not appear. For example I would allow one ! per title.

Also it would be great if a character could be completely banned from use in the thread title since some characters have no place in thread titles, such as ^ { and so forth. For them I would select 0 times to be repeated.

Thanks for any help on this.