How to convert tags in all tags in xml to lowercase without changing case of atribute values?

Question

I\'ve inherited some xml files which has all tags in uppercase. I would like to convert them to lowercase using either a regular expression or via XSLT. It would be handy to be

Answer 1

try to this regex:

<(\/?[a-zA-Z]*)\b.*?>

online tester: http://regex101.com/#PCRE

Enjoy your code