--- devel.module	2011-04-08 04:31:29.000000000 +0100
+++ devel.module	2011-06-01 20:08:16.000000000 +0100
@@ -11,6 +11,7 @@ define('DEVEL_QUERY_SORT_BY_DURATION', 1
 define('DEVEL_ERROR_HANDLER_NONE', 0);
 define('DEVEL_ERROR_HANDLER_STANDARD', 1);
 define('DEVEL_ERROR_HANDLER_BACKTRACE', 2);
+define('DEVEL_ERROR_HANDLER_BACKTRACE_AND_MESSAGE', 3);
 
 define('DEVEL_MIN_TEXTAREA', 50);
 
@@ -527,6 +528,7 @@ function devel_set_handler($handler) {
       // do nothing
       break;
     case DEVEL_ERROR_HANDLER_BACKTRACE:
+    case DEVEL_ERROR_HANDLER_BACKTRACE_AND_MESSAGE:
       if (has_krumo()) {
         set_error_handler('backtrace_error_handler');
       }
@@ -634,6 +636,17 @@ function backtrace_error_handler($error_
       }
       print t('%error: %message in %function (line %line of %file).', $variables) ." =>\n";
       krumo($nicetrace);
+
+      // Also show the standard drupal message if this was requested via the admin option for both
+      // backtrace and message. Create a lookup to convert the watchdog constants into the
+      // applicable drupal_set_message 'status' value.
+      $message_status = array(WATCHDOG_ERROR => 'error',
+                              WATCHDOG_WARNING => 'warning',
+                              WATCHDOG_NOTICE => 'warning',
+                              WATCHDOG_DEBUG => 'status');
+      if (variable_get('devel_error_handler', DEVEL_ERROR_HANDLER_STANDARD) == DEVEL_ERROR_HANDLER_BACKTRACE_AND_MESSAGE) {
+        drupal_set_message(t('%error: %message in %function (line %line of %file).', $variables), $message_status[$type[1]]);
+      }
     }
 
     watchdog('php', '%error: %message in %function (line %line of %file).', $variables, $type[1]);
--- devel.admin.inc	2011-04-08 04:31:29.000000000 +0100
+++ devel.admin.inc	2011-05-30 16:43:04.000000000 +0100
@@ -108,11 +108,12 @@ function devel_admin_settings() {
   $form['devel_error_handler'] = array('#type' => 'radios',
     '#title' => t('Error handler'),
     '#default_value' => variable_get('devel_error_handler', DEVEL_ERROR_HANDLER_STANDARD),
-    '#options' => array(DEVEL_ERROR_HANDLER_NONE => t('None'), DEVEL_ERROR_HANDLER_STANDARD => t('Standard drupal')),
+    '#options' => array(DEVEL_ERROR_HANDLER_NONE => t('None'), DEVEL_ERROR_HANDLER_STANDARD => t('Standard Drupal')),
     '#description' => t('Choose an error handler for your site. <em>Backtrace</em> prints nice debug information when an error is noticed, and you <a href="@choose">choose to show errors on screen</a>. <strong>Backtrace requires the <a href="@krumo">krumo library</a></strong>. <em>None</em> is a good option when stepping through the site in your debugger.', array('@krumo' => url('http://krumo.sourceforge.net'), '@choose' => url('admin/config/development/logging'))),
   );
   if (has_krumo()) {
     $form['devel_error_handler']['#options'][DEVEL_ERROR_HANDLER_BACKTRACE] = t('Backtrace');
+    $form['devel_error_handler']['#options'][DEVEL_ERROR_HANDLER_BACKTRACE_AND_MESSAGE] = t('Backtrace plus standard Drupal');
   }
 
   $options = drupal_map_assoc(array('default', 'blue', 'green', 'orange', 'white', 'disabled'));