Simon Marlow

Yes, this would be a great feature to have. Other people have done it before, e.g. I just found this: http://hackage.haskell.org/package/alex-meta There are probably others. Maybe there already exists a...

Good idea. Pull requests accepted :)

Not sure, it could be some bad interaction between the generated code and TemplateHaskell.

Let's keep support for 7.0.4 while it still works. If it becomes hard to support/test older versions we can increase the lower bound in the future.

This could be due to CPP interacting badly with the backslash-end-of-line sequence, see https://downloads.haskell.org/~ghc/master/users-guide/phases.html#cpp-and-string-gaps

It's not clear to me that this is a good idea in general. We don't know if continuing after an error is a sensible thing to do at all, so...

Take an example like this: `... "\xfffffff" ...` with a Haskell lexer. The character constant in the string is a lexical error because it's out of range, but if we...

Yes, I would really like to have this functionality. As I recall it was non-trivial to implement it (especially if we want to do it without a performance overhead if...

I'd happily accept a patch, provided it doesn't compromise the speed of non-streaming lexers.

Interesting. I have many questions :) Where is your Alex lexer for JSON? Do you have a parser too? Is it faster than aeson?