These regular expressions are for usage within Conors famous Content Filter Plugin.
Anyhow one can not mix various filters, so one must use either the Emotion or the URL filter.
Feel free to use them as soon as you know what "mask" you want to use.
Emotions (only Spark)
(^|\ )((\?:\||;\)|X-\(|;-\)|B-\)|:8\}|:x|:D|:\)|:-\)|\]:\)|:\(|:_\||:\^0|:0|:p|:\||; \\)(\ |$))+
To make sure that domains which end with .org, .com and .info can not open properly in a browser one can use these patterns. Spark does convert everything which looks like an URL to a link, so www.igniterealtime.org will be converted into a link. Even with this filter this will happen, anyhow http://www.igniterealtime_org/ will return an invalid domain name or DNS error.
Filter pattern: \.(org|com|info)
[x] Enable Mask, Mask: _$1