Ticket #16518: 16518.patch

wp-admin/includes/media.php

@@ -1517 +1517 @@
         <input id="cancel-upload" disabled="true" onclick="cancelUpload()" type="button" value="<?php esc_attr_e('Cancel Upload'); ?>" class="button" /></p>
         </div>
 </div>
+<?php
+$wp_multiselect_key = false;
+if ( strpos($_SERVER['HTTP_USER_AGENT'], 'Mac') !== false ) {
+        $wp_multiselect_key = 'CMD';
+} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Windows') !== false ) {
+        $wp_multiselect_key = 'CTRL';
+} elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Linux') !== false ) {
+        $wp_multiselect_key = 'CTRL';
+}
+if ( $wp_multiselect_key ): ?>
+<p class="multi-file-upload"><?php printf( __(' <strong>Note:</strong> To select multiple files to upload you can press the <kbd>%s</kbd> key within the file selection popup.' ), $wp_multiselect_key ); ?></p><?php
+endif;
+unset( $wp_multiselect_key ); ?>
+
 <?php do_action('post-plupload-upload-ui'); // hook change, old name: 'post-flash-upload-ui' ?>
 </div>