Index: wp-includes/comment-template.php
===================================================================
--- wp-includes/comment-template.php	(revision 30026)
+++ wp-includes/comment-template.php	(working copy)
@@ -1311,14 +1311,13 @@
 function get_comment_reply_link( $args = array(), $comment = null, $post = null ) {
 
 	$defaults = array(
-		'add_below'     => 'comment',
-		'respond_id'    => 'respond',
-		'reply_text'    => __( 'Reply' ),
-		'reply_to_text' => __( 'Reply to %s' ),
-		'login_text'    => __( 'Log in to Reply' ),
-		'depth'         => 0,
-		'before'        => '',
-		'after'         => ''
+		'add_below'  => 'comment',
+		'respond_id' => 'respond',
+		'reply_text' => __('Reply'),
+		'login_text' => __('Log in to Reply'),
+		'depth'      => 0,
+		'before'     => '',
+		'after'      => ''
 	);
 
 	$args = wp_parse_args( $args, $defaults );
@@ -1328,33 +1327,33 @@
 	}
 
 	$comment = get_comment( $comment );
-
 	if ( empty( $post ) ) {
 		$post = $comment->comment_post_ID;
 	}
-
 	$post = get_post( $post );
-
+	/**
+	 * Filter the comment reply link arguments.
+	 *
+	 * @since 4.1.0
+	 *
+	 * @param array   $args    An array of arguments overriding the defaults.
+	 * @param object  $comment The object of the comment being replied.
+	 * @param WP_Post $post    The WP_Post object.
+	 */
+	$args = apply_filters( 'comment_reply_link_args', $args, $comment, $post );
+	
+	$add_below = $args['add_below'];
+	$respond_id = $args['respond_id'];
+	$reply_text = $args['reply_text'];
+	
 	if ( ! comments_open( $post->ID ) ) {
 		return false;
 	}
 
 	if ( get_option( 'comment_registration' ) && ! is_user_logged_in() ) {
-		$link = sprintf( '<a rel="nofollow" class="comment-reply-login" href="%s">%s</a>',
-			esc_url( wp_login_url( get_permalink() ) ),
-			$args['login_text']
-		);
+		$link = '<a rel="nofollow" class="comment-reply-login" href="' . esc_url( wp_login_url( get_permalink() ) ) . '">' . $args['login_text'] . '</a>';
 	} else {
-		$onclick = sprintf( 'return addComment.moveForm( "%1$s-%2$s", "%2$s", "%3$s", "%4$s" )',
-			$args['add_below'], $comment->comment_ID, $args['respond_id'], $post->ID
-		);
-
-		$link = sprintf( "<a class='comment-reply-link' href='%s' onclick='%s' aria-label='%s'>%s</a>",
-			esc_url( add_query_arg( 'replytocom', $comment->comment_ID ) ) . "#" . $args['respond_id'],
-			$onclick,
-			esc_attr( sprintf( $args['reply_to_text'], $comment->comment_author ) ),
-			$args['reply_text']
-		);
+		$link = "<a class='comment-reply-link' href='" . esc_url( add_query_arg( 'replytocom', $comment->comment_ID ) ) . "#" . $respond_id . "' onclick='return addComment.moveForm(\"$add_below-$comment->comment_ID\", \"$comment->comment_ID\", \"$respond_id\", \"$post->ID\")'>$reply_text</a>";
 	}
 	/**
 	 * Filter the comment reply link.