elisp -> Python (was Re: [OT] Emacs, Eclipse, Leo (was Re: IDE

[Paul Rubin]

François Pinard <pinard at iro.umontreal.ca> writes:
> Pymacs is not Emacs Lisp, and Python in Vim is not Vimscript either,
> tweaks are needed in both cases for accessing some of the underlying
> scripting facilities.  Pymacs is rather elegant, Python in Vim is rather
> clean.

What are these editors?  Are they written in Python?  How do they
implement the editing buffer?  How do they implement searching
backwards for a regexp in the buffer?