[slime-devel] Patch to fix occasional "jerky" slime-eval-last-expression

[szergling]

Suppose I have 2 windows, 1 for Lisp code, another showing the REPL.
Every time I C-xC-e in the Lisp-code buffer, it jerks downwards so
that the current line (at point) becomes the last visible line in the
window. This is because slime is attempting a (recenter -1), but with
the wrong window.

I have an older Emacs 21.4.1 here which doesn't have
with-selected-window (a macro). The current (the last time I checked)
"emulation" of with-selected-window defines a function instead of a
macro. This causes evaluation of its body form at the wrong
time/places. See eg slime-repl-show-maximum-output (the original
source of my investigations and hence the subject of this email).

Perhaps a macro equivalent to slime-defun-if-undefined could be used
instead? Something like...

;; here, fboundp substitutes for macro-boundp

(defmacro slime-defmacro-if-undefined (name &rest rest)
  `(unless (fboundp ',name)
     (defmacro ,name , at rest)))


Cheers!
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