Allow colon characters in identifiers

[jpfiset]

We are porting the Nunaliit (http://nunaliit.org https://github.com/GCRC/nunaliit) application from Mustache to Handlebars. In Nunaliit, there are a number of functions named with a special character so as to not have a function's name collide with a valid document property. More specifically, the names of helper functions start with a colon.

Would it be possible to had the colon character for identifiers so as our project can port to handlebars and support legacy templates?

[kpdecker]

Covered in 681f1a6

[kpdecker]

Thats to say that this was merged already but github didn't seem to pick that fact up.

[wycats]

I'm not a huge fan of having a policy of adding new characters in ID anytime anyone asks for them. What's the limit?

[kpdecker]

Personally I'd argue that anything that doesn't conflict with the rest of the grammar is fine. You can access just about anything using the [] syntax but I'm not certain that should be a requirement.

On the other hand freeforall IDs limits what can be done in the future if more behavior is added to the language.