A short entry describing a tested function for linkifying twits. If you’re following non-us twetters you’ll sometimes find that they write hashtags “properly”, using diacritical characters. Twitter handle those hashtags properly, so #telefónica will be understood as #telefonica.
But if you’re writing your own application you’ll need to handle those characters by yourself. Twitter send them encoded as Unicode, so it’s easy to process them using PCRE… if your installation of PCRE is compiled with full Unicode support.