[black_eagle]

Probably I should have made it case insensitive in the first place.  However, I can't honestly say that I spend much time looking at the tags in my files (unless they need fixing) or that I'm bothered about whether or not they are aesthetically pleasing.  I am bothered about whether or not they produce the intended results.

It's a simple enough fix though so I'll see if I can include it in the json-rpc changes that I'm currently working on.