Scheme Mode and Regular Expression Literals

["Jakub T. Jankiewicz" <jcubic@onet.pl>]

Hi,

I'm working on Scheme interpreter written in JavaScript called LIPS
Scheme. It has the same syntax for [Regular expressions as Gauche][1]
but with more flags, because they are just JavaScript RegExp.

Is there a way to add support for regular expressions in the native scheme
mode without modification of the code? Something I can do from my .emacs file?

Regexes in LIPS and Gauche look like this `#/[a-b]+/`, it gives a lot of
problems inside Emacs. Sometimes you need to add comments with stuff after
to make the syntax highlighting and indentation work.

Example:


    (let ((x #/foo|bar/)) ;; |))
      (write x))

Emacs thinks that the vertical bar is a scheme extended symbol syntax and you
need to add a comment to close the symbol and close the lists otherwise the
code will not display and evaluate properly.

And if you want to send this to scheme REPL and have proper highlighting you
need something like this:

    (let ((x #/foo|bar/)) ;; |))
      (write x)
      (display " ;; |")
      (newline))

it would be cool if you could configure the scheme mode to allow such syntax.

[1]:
https://practical-scheme.net/gauche/man/gauche-refe/Regular-expressions.html

Jakub

--
Jakub T. Jankiewicz, Senior Front-End Developer
https://jcubic.pl/me
https://lips.js.org
https://koduj.org