Error reporting doesn't handle CRLF properly

[17cupsofcoffee]

Something I just noticed while implementing error reporting for my parser - every time I add a new line to my input file, the column number goes out of sync by +1 (and then eventually the line number too, when it hits the end of the line). That smelt of line ending weirdness to me, so I switched my editor from CRLF to LF - sure enough, everything lines back up.

So, in other words, it looks like pos_to_line in the generated code doesn't take into account the fact that a CRLF line ending is 2 bytes long. I'm guessing this hasn't been caught yet cause most people are using this library/Rust on Linux, where LF is the default.

This isn't a huge issue, as I can work around it by stripping out \r characters before the parsing stage, but I thought I should bring it to your attention at least!

Thanks for all your hard work on this library, by the way! By far the most fun I've had writing parsers ❤️

[17cupsofcoffee]

Wow, that was fast, thanks :)