Re: parser hacking: conditional fields

[Miles Bader <miles@...>]

Also, the mechanism sounds way too intrusive into the language core (a
second magic upvalue?!) for such a minor (if sometimes handy) feature.

-miles

-- 
Infancy, n. The period of our lives when, according to Wordsworth, 'Heaven
lies about us.' The world begins lying about us pretty soon afterward.