On Tue, Mar 13, 2012 at 18:05, Alex Rønne Petersen <xtzgzo...@gmail.com> wrote:
>>> lowerCase <- [a-z] >>> upperCase <- [A-Z] >>> Identifier <- (lowerCase / upperCase) (lowerCase / upperCase)* >> >> >> Why not: >> Identifier <- [a-zA-Z]+ > > > That was an illustrative example from the Pegged docs. But yeah, you should > just use a range; reads nicer. The docs are for teaching PEG :) (btw, it's the docs describe C-like identifiers, that's why I chose a longer approach) It's always this 'tension', between inlining and refactoring. [a-zA-Z]+ is shorter and more readable. But If you decide to extend your grammar to UTF-32, it'd be easier to just change the 'letter' rule.
