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03 Oct 2012, 20:23
Ulises Flynn (1 post)

On page 21 of the b2 document where we are given a sample grammar, it would be nice to discuss or point out regular expressions being used in the parser rules such as the difference between * (match 0 or more times) and + (match 1 or more times). I don’t think this is a problem for those who have experience with regular expressions, but it could be for new users.

08 Oct 2012, 18:31
Terence Parr (53 posts)

hi. my intention at that point was simply to give the reader something to cut and paste to try out. I think most programmers will know with those operators do but it’s not necessary to make it work as a black box. There is a pointer to where the reader will learn about making grammars.

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