Detecting a Linefeed character in XSLT

I need to detect and remove Linefeed characters within XSLT. I have tried ‘&lf’ (as is used in Tibco from which this integration is being converted), ‘&#10’, ’ ’ ‘&#xa’ and ’ ’ all to no avail.

Does anyone know what the exact unicode syntax I need to use to detect and either ignore (string-before) or remove (translate) embedded linefeed characters in in XML File ??