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3 points by stefano 6116 days ago | link | parent

It's in the standard (CLTL2). You can fix everything, because you can tell the reader to use your own functions on particulars characters, as an example this is a piece of code that lets you use Arc [... _ ...] syntax in Common Lisp:

(defun read-square (stream c) (declare (ignore c)) (let ((body (read-delimited-list #\] stream t))) `#'(lambda (_) ,body)))

(set-macro-character #\] #'(lambda (x y) (declare (ignore x y)) (values))) (set-macro-character #\[ #'read-square)