diff -r 6c5c20ce6bff sites/all/modules/regex_filter/regex_filter.module
--- a/sites/all/modules/regex_filter/regex_filter.module	Thu Apr 07 16:03:03 2011 +0200
+++ b/sites/all/modules/regex_filter/regex_filter.module	Thu Apr 07 16:04:26 2011 +0200
@@ -130,10 +130,9 @@
     '#description' => t('Perl/Php stype Regex Pattern to match against.'),
   );
   $form['replace'] = array(
-    '#type' => 'textfield',
+    '#type' => 'textarea',
     '#title' => t('Replace'),
     '#required' => TRUE,
-    '#size' => 50,
     '#description' => t('Replacement text'),
   );
   $form['submit'] = array('#type' => 'submit', '#value' => t('Save'));