[slime-devel] Keyboard shortcut mechanism for custom code expanders.

Hello, As a result of many long hours spent hacking ParenScript code, the idea for something like "C-c ret but with js:js instead of macroexpand-1" came up. Since ParenScript itself has nothing to do with Slime, and this feature is probably useful for many similar systems, I thought I might as well make this a general facility where you can just add the "expanders" you need in your .emacs. Code is attached (no diffs since I didn't have to change anything). Vladimir