thunk->begin and thunk->end don't consistently work

[fletcher]

It's entirely possible that I'm being daft, or that my google-fu is failing me, but thunk->begin and thunk->end don't consistently indicate the offsets of the beginning/end of the recipe. In particular, the accuracy of nested recipes seems inaccurate. For example, matching a string that includes some whitespace at the end that I need to keep track of.

What are the rules for which components of a "recipe" are included inside the thunk begin/end offsets?

Thanks!

[nddrylliog]

While a maintainer of the fork, I'm not peg/leg grammar expert myself. However, you can take a look at how it's done in nagaqueen, rock's grammar. Noteworthy places are:

• tokenPos: https://github.com/nddrylliog/nagaqueen/blob/master/grammar/nagaqueen.leg#L34
• tokenPos usage: https://github.com/nddrylliog/nagaqueen/blob/master/grammar/nagaqueen.leg#L526

Usage of "<" and ">" are key as to what gets captured inside 'yyText' / '$$' - maybe it influences thunk->{begin,end} too?

Is your source file UTF-8? Could that influence counting as well?

Also, maybe the whitespace is matched by some outer rule rather than the inner one you expect it to? That would be weird, but when encountering weird errors it's good to keep an open mind.. If @rurban, @tokuhirom, @guliopaci or @onnlucky could pitch in, I'd appreciate it. I'm quite busy with other projects nowadays!