Hi,

If I'm not mistaken, the current Slime version doesn't correctly parse in-package forms when the package name is a string or a keyword. This can be easily seen by writing in an edit buffer

(in-package :foo)

or

(in-package "FOO")

and then pressing C-c M-p (slime-repl-set-package)

The following replacement correct this behaviour.

(defun slime-search-buffer-package () (save-excursion (when (let ((case-fold-search t) (regexp "^(\(cl:\|common-lisp:\)?in-package\>[ \n\t\r':"]*")) (or (re-search-backward regexp nil t) (re-search-forward regexp nil t))) (goto-char (match-end 0)) (let ((start (point))) (let ((pkg (ignore-errors (read (current-buffer))))) (and pkg (format "%S" pkg)))))))

Best regards,

António Leitão.