Hi,
I often find it quite annoying that `C-w' during Isearch just inserts the word at point; the reason is that variable identifiers in Lisp contain non-word constituents very often.
E.g. If point is at *special-variables*, you'd have to press `C-w' three times to eventually get it inserted as the search string.
The following will make `C-w' respect symbol constituents as well as word constituents when isearching in Lisp buffers, such that one `C-w' will suffice for gripping special variables.
(defun isearch-yank-symbolic-word-or-char () (interactive) (isearch-yank-internal (lambda () (let ((distance (skip-syntax-forward "w_"))) (when (zerop distance) (forward-char 1)) (point)))))
(add-hook 'lisp-mode-hook (lambda () (make-local-variable 'isearch-mode-map) (define-key isearch-mode-map "\C-w" 'isearch-yank-symbolic-word-or-char)))
I consider this generally useful, and wanted to ask if I should commit something like that to Slime?
-T.