- Make mime type detection based on filename extension to be case-insensitive

1 files changed, 5 insertions, 3 deletions

diff --git a/program/include/main.inc b/program/include/main.inc
index 148c2bd5c..9f154e4b7 100644
--- a/program/include/main.inc
+++ b/program/include/main.inc
@@ -1627,12 +1627,14 @@ function rcmail_filetype2classname($mimetype, $filename)
   list($primary, $secondary) = explode('/', $mimetype);
 
   $classes = array($primary ? $primary : 'unknown');
-  if ($secondary)
+  if ($secondary) {
     $classes[] = $secondary;
-  if (preg_match('/\.([a-z0-9]+)$/', $filename, $m))
+  }
+  if (preg_match('/\.([a-z0-9]+)$/i', $filename, $m)) {
     $classes[] = $m[1];
+  }
 
-  return join(" ", $classes);
+  return strtolower(join(" ", $classes));
 }
 
 /**