Regex to Indent an XML File

Question

Is it possible to write a REGEX (search replace) that when run on an XML string will output that XML string indented nicely?

If so whats the REGEX :)

Answer 1

The dark voodoo regexp as described here works great.
http://www.perlmonks.org/?node_id=261292
Its main advantage against using XML::LibXMl and others is that it's an order of magnitude faster.