Allow preference sections to define CSS class names

program/include/rcmail.php

@@ -1127,7 +1127,19 @@ class rcmail extends rcube
                 // format each col
                 foreach ($a_show_cols as $col) {
                     $val = is_array($row_data[$col]) ? $row_data[$col][0] : $row_data[$col];
-                    $table->add($col, empty($attrib['ishtml']) ? $this->Q($val) : $val);
+
+                    // escape html
+                    if (empty($attrib['ishtml'])) {
+                        $val = html::quote($val);
+                    }
+
+                    // check if we want to add a class to this table cell
+                    $clskey = $col . '_class';
+                    if (!empty($row_data[$clskey])) {
+                        $col .= ' ' . $row_data[$clskey];
+                    }
+
+                    $table->add($col, $val);
                 }
             }
         }

program/steps/settings/func.inc

@@ -73,6 +73,13 @@ function rcmail_sections_list($attrib)
 
     list($list, $cols) = rcmail_user_prefs();
 
+    // add section keys as class name to the primary col
+    array_walk($list, function(&$item, $key) use ($attrib) {
+        if (!isset($item['section_class'])) {
+            $item['section_class'] = trim($attrib['classprefix'] . $key);
+        }
+    });
+
     // create XHTML table
     $out = $RCMAIL->table_output($attrib, $list, $cols, 'id');