From 6ebc722218989a4d1e4d114e3e163bb92f07bd9f Mon Sep 17 00:00:00 2001
From: whyisjake <whyisjake@git.wordpress.org>
Date: Wed, 29 Apr 2020 16:25:25 +0000
Subject: [PATCH] User: Invalidate `user_activation_key` on password update.
 Query: Ensure that only a single post can be returned on date/time based
 queries. Cache API: Ensure proper escaping around the stats method in the
 cache API. Formatting: Expand `sanitize_file_name` to have better support for
 utf8 characters.

Brings the changes in [47634], [47635], [47637], and [47638] to the 4.6 branch.

Props: batmoo, ehti, nickdaugherty, peterwilsoncc, sergeybiryukov, sstoqnov, westi, whyisjake, whyisjake, xknown.


Built from https://develop.svn.wordpress.org/branches/4.6@47651


git-svn-id: http://core.svn.wordpress.org/branches/4.6@47426 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/formatting.php | 19 ++++++++++++++++++-
 wp-includes/query.php      |  4 ----
 wp-includes/user.php       |  2 +-
 3 files changed, 19 insertions(+), 6 deletions(-)

diff --git a/wp-includes/formatting.php b/wp-includes/formatting.php
index 33d606e483..785fd83c00 100644
--- a/wp-includes/formatting.php
+++ b/wp-includes/formatting.php
@@ -1744,6 +1744,24 @@ function remove_accents( $string ) {
 function sanitize_file_name( $filename ) {
 	$filename_raw = $filename;
 	$special_chars = array("?", "[", "]", "/", "\\", "=", "<", ">", ":", ";", ",", "'", "\"", "&", "$", "#", "*", "(", ")", "|", "~", "`", "!", "{", "}", "%", "+", chr(0));
+
+	// Check for support for utf8 in the installed PCRE library once and store the result in a static.
+	static $utf8_pcre = null;
+	if ( ! isset( $utf8_pcre ) ) {
+		// phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged
+		$utf8_pcre = @preg_match( '/^./u', 'a' );
+	}
+
+	if ( ! seems_utf8( $filename ) ) {
+		$_ext     = pathinfo( $filename, PATHINFO_EXTENSION );
+		$_name    = pathinfo( $filename, PATHINFO_FILENAME );
+		$filename = sanitize_title_with_dashes( $_name ) . '.' . $_ext;
+	}
+
+	if ( $utf8_pcre ) {
+		$filename = preg_replace( "#\x{00a0}#siu", ' ', $filename );
+	}
+
 	/**
 	 * Filters the list of characters to remove from a filename.
 	 *
@@ -1753,7 +1771,6 @@ function sanitize_file_name( $filename ) {
 	 * @param string $filename_raw  Filename as it was passed into sanitize_file_name().
 	 */
 	$special_chars = apply_filters( 'sanitize_file_name_chars', $special_chars, $filename_raw );
-	$filename = preg_replace( "#\x{00a0}#siu", ' ', $filename );
 	$filename = str_replace( $special_chars, '', $filename );
 	$filename = str_replace( array( '%20', '+' ), '-', $filename );
 	$filename = preg_replace( '/[\r\n\t -]+/', '-', $filename );
diff --git a/wp-includes/query.php b/wp-includes/query.php
index 24531ce35e..a4e3897710 100644
--- a/wp-includes/query.php
+++ b/wp-includes/query.php
@@ -1632,10 +1632,6 @@ class WP_Query {
 			$this->is_single = true;
 		} elseif ( $qv['p'] ) {
 			$this->is_single = true;
-		} elseif ( ('' !== $qv['hour']) && ('' !== $qv['minute']) &&('' !== $qv['second']) && ('' != $qv['year']) && ('' != $qv['monthnum']) && ('' != $qv['day']) ) {
-			// If year, month, day, hour, minute, and second are set, a single
-			// post is being queried.
-			$this->is_single = true;
 		} elseif ( '' != $qv['pagename'] || !empty($qv['page_id']) ) {
 			$this->is_page = true;
 			$this->is_single = false;
diff --git a/wp-includes/user.php b/wp-includes/user.php
index 6d473ef4c8..84366e5596 100644
--- a/wp-includes/user.php
+++ b/wp-includes/user.php
@@ -1612,7 +1612,7 @@ function wp_insert_user( $userdata ) {
 	$data = wp_unslash( $compacted );
 
 	if ( $update ) {
-		if ( $user_email !== $old_user_data->user_email ) {
+		if ( $user_email !== $old_user_data->user_email || $user_pass !== $old_user_data->user_pass ) {
 			$data['user_activation_key'] = '';
 		}
 		$wpdb->update( $wpdb->users, $data, compact( 'ID' ) );