[pmwiki-users] CleanURL

[DaveG]

On this page http://pmwiki.com/wiki/Cookbook/CleanUrls, the pattern 
([^/a-z].*) is used throughout. Can someone describe what this is doing?

The way I read it is to match anything not containing a forward-slash or 
letters a-z. But in the context in which it's used, my interpretation 
makes no sense. Somehow it should translate to match group/pagename, but 
  it's not clear why.

Not, the pattern does work, I just can't fathom why.

Thanks,

  ~ ~ Dave