From 57749e1d2ca0d40f5ca9e00c90edf6948f3ab211 Mon Sep 17 00:00:00 2001
From: Dion Hulse <dd32@git.wordpress.org>
Date: Sun, 11 Apr 2010 08:56:18 +0000
Subject: [PATCH] Introduce get_comment_id_fields() as a Getter for
 comment_id_fields(). Introduce a filter on the output to add extra fields.
 Props zoranzaric. Fixes #12893

git-svn-id: https://develop.svn.wordpress.org/trunk@14067 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/comment-template.php | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/wp-includes/comment-template.php b/wp-includes/comment-template.php
index 3a27a2b030..616ad70c41 100644
--- a/wp-includes/comment-template.php
+++ b/wp-includes/comment-template.php
@@ -1131,16 +1131,27 @@ function cancel_comment_reply_link($text = '') {
 }
 
 /**
- * Output hidden input HTML for replying to comments.
+ * Retrieve hidden input HTML for replying to comments.
  *
- * @since 2.7.0
+ * @return string Hidden input HTML for replying to comments
  */
-function comment_id_fields() {
+function get_comment_id_fields() {
 	global $id;
 
 	$replytoid = isset($_GET['replytocom']) ? (int) $_GET['replytocom'] : 0;
-	echo "<input type='hidden' name='comment_post_ID' value='$id' id='comment_post_ID' />\n";
-	echo "<input type='hidden' name='comment_parent' id='comment_parent' value='$replytoid' />\n";
+	$result  = "<input type='hidden' name='comment_post_ID' value='$id' id='comment_post_ID' />\n";
+	$result .= "<input type='hidden' name='comment_parent' id='comment_parent' value='$replytoid' />\n";
+	return apply_filters('comment_id_fields', $result, $id, $replytoid);
+}
+
+/**
+ * Output hidden input HTML for replying to comments.
+ *
+ * @since 2.7.0
+ * @see get_comment_id_fields() Echoes result
+ */
+function comment_id_fields() {
+	echo get_comment_id_fields();
 }
 
 /**