Add optional brackets to Scheme syntax

[jcubic]

Information

• Language: Scheme
• Plugins: none

Description
Some books about Scheme show usage of brackets together with parenthesis. Example is The Scheme Programming Language by Kent Dybvig which is kind of classic. The R7RS Scheme spec don't specify brackets but some Scheme implementation use them optionally, not only Racket, that was once know as PTL Scheme and I think brackets were already there.

I think it would be good idea to add brackets the same as racket have (the code can be reused or copy/pasted), so the highlighting will work with wider range of code examples.

Code snippet

Test page

The code being highlighted incorrectly.

(let ([x 10]
      [y 20])
  (+ x y))

[RunDevelopment]

So brackets and parenthesis can be used interchangeably in some Scheme implementations?

[jcubic]

Yes, that's right. This is how for instance it work in BiwaScheme even that it's not required by the Scheme standard, the same happen with lisp macros (define-macro) they are not part of the standard but most scheme implementation have them.

It's good to have in generic scheme syntax highlighter.