At-Exprs about racket-rash HOT 2 OPEN

Thanks for your feedback.

In some ways it already supports at-expressions. You can do this already:

#lang at-exp racket
(require rash)
;; this requirement will go away soon
(require rash/demo/setup)
@rash|{ls -l | grep foobar}|

I haven't yet gotten around to making the readtable in #lang rash customizable, but it's near the top of my rash to-do list, then you will be able to add the at-expression trigger character you like to both the line-syntax and when you escape to racket.

But note that you should use @rash|{}| rather than @rash{} if you want to nest anything or use commands like ssh user@host, or you will have issues with the at-reader producing non-string things that make it barf when it wants to read them with the next readtable.

I still prefer (rash «ls | grep foo») or ◸ls | grep foo◹ (or $(ls | grep foo) once I get around to the readtable improvements I plan on doing [eg. to allow readtable trigger values to be more than just a character]) for various reasons. But I definitely want to support people who want to add the at-reader to their readtable. So I'll add that feature soon.

from racket-rash.

I haven't yet documented how to add at-expressions (which is now possible, though it's a little more involved than you would expect), but I've also stopped using weird unicode delimiters for basic things. Have you tried the new {} and #{} delimiter changes? Does that solve the immediate problem for you?

Some time soon I'll document how you can adjust the readtable as well.

from racket-rash.