jpgohlke/twitch-chat-filter — pull request #51 by hugomg (2014-02-25 21:40:58+00:00)
Title: General copy paste rewriter

Replace the duplicate-URL detector with
a general copy-paste rewriter.

The copy-paste rewriter detects situations
where people use ctrl-v multiple times to
pad out a message and rewrites the message
so that the copy pasted stuff appears only once.