markdown : Add function debug

git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@1862 bf3deb0d-5f1a-0410-827f-c0cc1f45334c

markdown.php

@@ -45,6 +45,8 @@ class markdown
   /** Search and replace in the paragraph on one line */
   private function searchReplace ($line)
   {
+    if ($this->debug)
+      echo "CALL searchReplace ($line)\n";
     $search = array ();
     $replace = array ();
     // Titles short