Skype v7 supports regexp
Once you written a text to someone you are able to edit it. This can now be performed with regular expressions such as:
Send: hello world
Send: s&#x2F;world&#x2F;friend&#x2F;g<p>Text is then changed from &quot;hello world&quot; to &quot;hello friend&quot; automatically.<p>Not sure if this is completely new or documented. But really nice feature!<p>(Work on Skype 7.26 on OSX)