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-rw-r--r--lisp/button.el4
1 files changed, 3 insertions, 1 deletions
diff --git a/lisp/button.el b/lisp/button.el
index 07c98e668bd..3cf38fa64c6 100644
--- a/lisp/button.el
+++ b/lisp/button.el
@@ -349,7 +349,9 @@ Also see `make-text-button'."
;; Finding buttons in a buffer
(defun button-at (pos)
- "Return the button at position POS in the current buffer, or nil."
+ "Return the button at position POS in the current buffer, or nil.
+If the button at POS is a text property button, the return value
+is a marker pointing to POS."
(let ((button (get-char-property pos 'button)))
(if (or (overlayp button) (null button))
button