From 43748bc4b8ea36e0536e683e794112bfe3351978 Mon Sep 17 00:00:00 2001
From: Svein-Tore Griff With <falcon-git@users.noreply.github.com>
Date: Fri, 15 Jul 2016 15:33:11 +0200
Subject: [PATCH] Add documentation regarding stylePatterns

---
 h5p.classes.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/h5p.classes.php b/h5p.classes.php
index 1021375..20ac82a 100644
--- a/h5p.classes.php
+++ b/h5p.classes.php
@@ -2863,6 +2863,7 @@ class H5PContentValidator {
 
       // Determine allowed style tags
       $stylePatterns = array();
+      // All styles must be start to end patterns (^...$)
       if (isset($semantics->font)) {
         if (isset($semantics->font->size) && $semantics->font->size) {
           $stylePatterns[] = '/^font-size: *[0-9.]+(em|px|%) *;?$/i';
@@ -3519,6 +3520,7 @@ class H5PContentValidator {
               // Allow certain styles
               foreach ($allowedStyles as $pattern) {
                 if (preg_match($pattern, $match[1])) {
+                  // All patterns are start to end patterns, and CKEditor adds one span per style
                   $attrArr[] = 'style="' . $match[1] . '"';
                   break;
                 }