[SVN] RegExp List Compression

[Simon Gregory]

In a few of the language definitions there are lists of matches which  
look like this:

(G(erd Knops|a(vin Kistner|rrett J. Woodworth)|ra(nt Hollingworth|eme  
Rocher))|R(yan McCuaig|ich Barton|o(ss Harmes|ger Braunstein|b(ert  
Rainthorpe| (Rix|Bevan))))

I'm imagining that it's painful to achieve these by hand, so can  
anyone point me to a script that does it? If they're not machine  
generated, how big a benefit does the conciser match bring?

Cheers,
Simon