(Man-xref-button-action): New function. If the `Man-target-string'

button property is a function, assume it accepts a position argument.
(Man-abstract-xref-man-page): Use it.
(Man-default-man-entry): New optional arg POS.
This commit is contained in:
Chong Yidong 2006-12-09 17:42:28 +00:00
parent b13f75a921
commit 38363db72c

View file

@ -428,13 +428,17 @@ Otherwise, the value is whatever the function
'follow-link t
'help-echo "mouse-2, RET: display this man page"
'func nil
'action (lambda (button)
(funcall
(button-get button 'func)
(let ((func (button-get button 'Man-target-string)))
(if func
(if (functionp func) (funcall func) func)
(button-label button))))))
'action #'Man-xref-button-action)
(defun Man-xref-button-action (button)
(let ((target (button-get button 'Man-target-string)))
(funcall
(button-get button 'func)
(cond ((null target)
(button-label button))
((functionp target)
(funcall target (button-start button)))
(t target)))))
(define-button-type 'Man-xref-man-page
:supertype 'Man-abstract-xref-man-page
@ -636,11 +640,12 @@ a new value."
;; ======================================================================
;; default man entry: get word under point
(defsubst Man-default-man-entry ()
"Make a guess at a default manual entry.
This guess is based on the text surrounding the cursor."
(defsubst Man-default-man-entry (&optional pos)
"Make a guess at a default manual entry based on the text at POS.
If POS is nil, the current point is used."
(let (word)
(save-excursion
(if pos (goto-char pos))
;; Default man entry title is any word the cursor is on, or if
;; cursor not on a word, then nearest preceding word.
(skip-chars-backward "-a-zA-Z0-9._+:")