+(defun finder-insert-at-column (column &rest strings)
+ "Insert, at column COLUMN, other args STRINGS."
+ (if (>= (current-column) column) (insert "\n"))
+ (move-to-column column t)
+ (apply 'insert strings))
+
+(defvar finder-help-echo nil)
+
+(defun finder-mouse-face-on-line ()
+ "Put `mouse-face' and `help-echo' properties on the previous line."
+ (save-excursion
+ (previous-line 1)
+ (unless finder-help-echo
+ (setq finder-help-echo
+ (let* ((keys1 (where-is-internal 'finder-select
+ finder-mode-map))
+ (keys (nconc (where-is-internal
+ 'finder-mouse-select finder-mode-map)
+ keys1)))
+ (concat (mapconcat 'key-description keys ", ")
+ ": select item"))))
+ (add-text-properties
+ (line-beginning-position) (line-end-position)
+ '(mouse-face highlight
+ help-echo finder-help-echo))))
+
+;;;###autoload
+(defun finder-list-keywords ()
+ "Display descriptions of the keywords in the Finder buffer."
+ (interactive)
+ (if (get-buffer "*Finder*")
+ (pop-to-buffer "*Finder*")
+ (pop-to-buffer (set-buffer (get-buffer-create "*Finder*")))
+ (finder-mode)
+ (setq buffer-read-only nil)
+ (erase-buffer)
+ (mapc
+ (lambda (assoc)
+ (let ((keyword (car assoc)))
+ (insert (symbol-name keyword))
+ (finder-insert-at-column 14 (concat (cdr assoc) "\n"))
+ (finder-mouse-face-on-line)))
+ finder-known-keywords)
+ (goto-char (point-min))
+ (setq finder-headmark (point))
+ (setq buffer-read-only t)
+ (set-buffer-modified-p nil)
+ (balance-windows)
+ (finder-summary)))
+
+(defun finder-list-matches (key)
+ (pop-to-buffer (set-buffer (get-buffer-create "*Finder Category*")))
+ (finder-mode)
+ (setq buffer-read-only nil)
+ (erase-buffer)
+ (let ((id (intern key)))
+ (insert
+ "The following packages match the keyword `" key "':\n\n")
+ (setq finder-headmark (point))
+ (mapc
+ (lambda (x)
+ (if (memq id (car (cdr (cdr x))))
+ (progn
+ (insert (car x))
+ (finder-insert-at-column 16 (concat (nth 1 x) "\n"))
+ (finder-mouse-face-on-line))))
+ finder-package-info)
+ (goto-char (point-min))
+ (forward-line)
+ (setq buffer-read-only t)
+ (set-buffer-modified-p nil)
+ (shrink-window-if-larger-than-buffer)
+ (finder-summary)))
+
+;;;###autoload
+(defun finder-commentary (file)
+ "Display FILE's commentary section.
+FILE should be in a form suitable for passing to `locate-library'."
+ (interactive
+ (list
+ (completing-read "Library name: "
+ 'locate-file-completion
+ (cons (or find-function-source-path load-path)
+ (find-library-suffixes)))))
+ (let* ((str (lm-commentary (find-library-name file))))
+ (if (null str)
+ (error "Can't find any Commentary section"))
+ ;; This used to use *Finder* but that would clobber the
+ ;; directory of categories.
+ (delete-other-windows)
+ (pop-to-buffer "*Finder-package*")
+ (setq buffer-read-only nil)
+ (erase-buffer)
+ (insert str)
+ (goto-char (point-min))
+ (delete-blank-lines)
+ (goto-char (point-max))
+ (delete-blank-lines)
+ (goto-char (point-min))
+ (while (re-search-forward "^;+ ?" nil t)
+ (replace-match "" nil nil))
+ (goto-char (point-min))
+ (setq buffer-read-only t)
+ (set-buffer-modified-p nil)
+ (shrink-window-if-larger-than-buffer)
+ (finder-mode)
+ (finder-summary)))
+
+(defun finder-current-item ()
+ (let ((key (save-excursion
+ (beginning-of-line)
+ (current-word))))
+ (if (or (and finder-headmark (< (point) finder-headmark))
+ (= (length key) 0))
+ (error "No keyword or filename on this line")
+ key)))
+
+(defun finder-select ()
+ "Select item on current line in a finder buffer."
+ (interactive)
+ (let ((key (finder-current-item)))
+ (if (string-match "\\.el$" key)
+ (finder-commentary key)
+ (finder-list-matches key))))
+
+(defun finder-mouse-select (event)
+ "Select item in a finder buffer with the mouse."
+ (interactive "e")
+ (save-excursion
+ (set-buffer (window-buffer (posn-window (event-start event))))
+ (goto-char (posn-point (event-start event)))
+ (finder-select)))
+
+;;;###autoload