Make "Dnn" and "Tnn" match case-insensitively in the "attach" dialog

Summary: These patterns are hard-coded, allow them to match case-insenstiviely.

Test Plan: Typed "d3" and "D3", got the right object in the attach dialog.

Reviewers: btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T1253

Differential Revision: https://secure.phabricator.com/D2511

src/applications/search/controller/select/PhabricatorSearchSelectController.php

@@ -80,10 +80,10 @@ final class PhabricatorSearchSelectController
     $pattern = null;
     switch ($this->type) {
       case PhabricatorPHIDConstants::PHID_TYPE_TASK:
-        $pattern = '/\bT(\d+)\b/';
+        $pattern = '/\bT(\d+)\b/i';
         break;
       case PhabricatorPHIDConstants::PHID_TYPE_DREV:
-        $pattern = '/\bD(\d+)\b/';
+        $pattern = '/\bD(\d+)\b/i';
         break;
     }