JEmacs Implementation Status

ELisp Syntax

• ;;;###autoload: Works.
• save-excursion works.
• save-current-buffer works.
• unwind-protect works.

ELisp core

• read: Pasring of Emacs-style s-expressions mostly works.
• print: Prints in Scheme format.
• Dynamic name scoping (works).
• Buffer-local variables (mostly works).
• defmacro doesn't work, for some undetermined reason.
• purecopy is just identity. A possible improvement would force compile-tiem evaluation to a literal.

Strings

• format: Framework and most common cases work.

Interaction

• No mini-buffer. (Uses pop-up dialog window where Emacs uses mini-buffer.)
• No each area. (Messages are written on console.)
• interactive: Basic framework implemented. Only string argument implemented. Most specifiers are ignored.
• Selection sets point and mark, but otherwise not handled properly.
• call-interactively works.
• interactive-p is hardwired to nil. One possible implementation is to examine the output from new Throwable().printStackTrace(...). A possibly-more efficient implementation is to make it a macro for (eq? (%buffer-current-command) --this-function--).

Common Lisp extensions

• Default values for optional parameters (works).
• typep: Basic framework works; only (some) simple type names work. Any Java fully-qualified Java classname be used as type specifier. Most type names cause typep to be inlined.
• There is a almost-complete implementation of CL-style format which could be made available under the name format*