On 3 February 2010 17:14, Stephen C. Gilardi <squee...@mac.com> wrote:
> I believe it's also possible to make the change backward compatible so 
> arguments to the new require macro would work quoted or not. (by detecting 
> and ignoring (quote ...) special forms in arguments).

That's a good idea! A simple-minded macro like the one I posted
previously would throw a totally unhelpful exception when used at the
REPL in the old way. A version amended to take this into account:

(defmacro require [& libspecs]
  (let [lss (map (fn [spec]
                   (if (and (instance? clojure.lang.Cons spec)
                            (= 'quote (first spec)))
                     `(do (println "warning: use of quoted namespace
names with require is deprecated")
                        spec)
                     `'~spec))
                 libspecs)]
    `(require* ~...@lss)))

This would of course still break any code actually depending on
require being a function, so it's only backward compatible in REPL
use...

Sincerely,
Michał

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