Disable char , (comma) in file name -ref #6785

main/inc/lib/main_api.lib.php

@@ -4904,8 +4904,8 @@ function api_is_element_in_the_session($tool, $element_id, $session_id = null) {
 
 function replace_dangerous_char($filename, $strict = 'loose') {
     // Safe replacements for some non-letter characters.
-    static $search  = array("\0", ' ', "\t", "\n", "\r", "\x0B", '/', "\\", '"', "'", '?', '*', '>', '<', '|', ':', '$', '(', ')', '^', '[', ']', '#', '+', '&', '%');
-    static $replace = array('',   '_', '_',  '_',  '_',  '_',    '-', '-',  '-', '_', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-');
+    static $search  = array(',', "\0", ' ', "\t", "\n", "\r", "\x0B", '/', "\\", '"', "'", '?', '*', '>', '<', '|', ':', '$', '(', ')', '^', '[', ']', '#', '+', '&', '%');
+    static $replace = array('_', '',   '_', '_',  '_',  '_',  '_',    '-', '-',  '-', '_', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-');
 
     // Encoding detection.
     $encoding = api_detect_encoding($filename);