Could rbg2p report an error if a variable in a rule is not previously defined?

[HannaLindgren]

I would like to get an error in the following case:

VAR CHARSET (a|b|c)
...
a -> A / _ HCARSET

where the variable is wrong.

[NikolajLindberg]

Me too!

[HannaLindgren]

It now fails if the context matches /[A-Z]{2,}/ OCH /^[A-Z0-9]{2,}$/. Not sure if this is right or not.

[HannaLindgren]

It is not entirely easy to determine if a specified context is a variable or a regexp... It now fails if the context matches /^[A-Z]/ AND /^[A-Z0-9]{2,}$

Will close for now, but see also #5: Use of variables should always be surrounded by brackets