Re: terminological problem (EBNF & regular expressions)

>> BTW, show me a more concise way to specify "zero or more of X or Y
>> or Z separated by commas"
>> LRgen allows one to do it like this: [X|Y|Z]/','...
>
> Similar concise: ((X|Y|Z),)*
>

Would this allow the following sequence to be legal?

X,Y,Z,

If so, it's not the same as [X|Y|Z]/','...
It seems like one would have to say

((X|Y|Z)(,(X|Y|Z))*)?

to accomplish the same thing.


Paul Mann
http://parsetec.com

.

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