grammar

It would be great to see a tutorial on how to port a pyparsing based project to Lark.

The rust code in the .lalrpop files are still on rust 2015 and need to be manually updated since cargo fix won't work on those files.

We should also update the generated code to emit 2018 idiomatic code (see #2018 )

Very nice library by the way. I'm having some fun learning it. Thanks!

128 bit integers on gcc on clang may be helpful

compiler specific adjustment that seems to work for line dsl/integer.hpp:76

        else if constexpr (std::is_same_v<T, unsigned long long>)
            return ULLONG_MAX;
+        else if constexpr (std::is_same_v<T, __int128_t>)
+           return __int128_t(LL

Tokenizer.pipe, Rules.suggest and maybe some other methods should return an iterator instead of a Vec<_> for more flexibility.