Support for Unicode and escape sequences in property names.

[jordanbtucker]

Are there any ideas on how to support Unicode and their escape sequences in identifiers? What are the options, and what are the pros and cons of those options?

It seems the biggest hurdle is that there is no standard way to determine what Unicode category a code point belongs to. For example, an identifier can start with $, _, or any character in the five Letter categories or in the Number, Letter category. That's 17196 different characters, all spread across the Unicode code point list.

Here are some ideas on perhaps how to solve this:

• Require a dependency that provides support for testing Unicode categories.
• Bake in support for it yourself. I've already done some prototyping and benchmarking.
• Consume Unicode escape sequences and forego testing them against appropriate Unicode classes, willfully violating the ES5 spec.
• Something very obvious I haven't thought of yet.

I think it's worth discussing the costs and benefits of implementing this support. What do you think?

[aseemk]

These are great thoughts. Issue #1 already exists for the same thing you're talking about, I think. Want to move your comment there and close this one as a dupe?

[jordanbtucker]

Moved to #1. Thanks.