Hello, > Indeed! I'm looking forward to having it in Guile.
Great! I don't intend to be pressuring you to merge it, by the way. I hope my message didn't come across that way. > The reason I didn't merge it yet was twofold: (1) the commit logs were > not in the standard style, and (2) I wasn't comfortable with the macro > binding stuff. (2) was sufficiently big that I didn't have time to fix > it up. My apologies for stalling on this... But maybe now is the time > to look at it again! Yes, the binding stuff actually seemed very weird to me too, mostly because it's very non-idiomatic. More specifically, the peg module does most of its code generation in regular functions rather than macros. safe-bind implements hygiene for these code-generating functions. It's basically what you'd get with defmacro. I eventually came to the conclusion, however, that it's really a symptom of a larger issue. Most likely it would be possible to take all of the functions that use safe-bind and rewrite them as macros themselves, using either syntax-case or syntax-rules. However, I am afraid that the result might be incredibly ugly. In order to make the code more readable, we use normal functions for code generation and provide hygiene through safe-bind. So the larger issue is that Scheme needs nicer-looking ways to define macros. If it had those, we wouldn't be using hacks like safe-bind. But we don't, and that's a huge issue to tackle. Those are my thoughts, but I would be quite curious to know if you (or anyone else) think the same way, or think something different is going on. Noah
