bug#24734: Minor improvement of the doc of lisp/paren.el

[Hong Xu]

OK, actually I never received the response email, don't know why.

The attachment is an updated version.

diff --git a/lisp/paren.el b/lisp/paren.el
index 53eb50077f25..100cc58f0cbe 100644
--- a/lisp/paren.el
+++ b/lisp/paren.el
@@ -181,6 +181,9 @@ show-paren-data-function
 Where HERE-BEG..HERE-END is expected to be near point.")
 
 (defun show-paren--default ()
+  "Finds the opener/closer near point and its match.
+
+It is the default value of `show-paren-data-function'."
   (let* ((temp (show-paren--locate-near-paren))
         (dir (car temp))
         (outside (cdr temp))
@@ -233,9 +236,8 @@ show-paren--default
                  (if (= dir 1) pos (1+ pos))
                  mismatch)))))))
 
-;; Find the place to show, if there is one,
-;; and show it until input arrives.
 (defun show-paren-function ()
+  "Highlight the parentheses until the next input arrives."
   (let ((data (and show-paren-mode (funcall show-paren-data-function))))
     (if (not data)
         (progn

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