diff --git a/resources/celerity/map.php b/resources/celerity/map.php
--- a/resources/celerity/map.php
+++ b/resources/celerity/map.php
@@ -507,7 +507,7 @@
     'rsrc/js/phui/behavior-phui-object-box-tabs.js' => '2bfa2836',
     'rsrc/js/phuix/PHUIXActionListView.js' => 'b5c256b8',
     'rsrc/js/phuix/PHUIXActionView.js' => '8cf6d262',
-    'rsrc/js/phuix/PHUIXAutocomplete.js' => '3dfff01f',
+    'rsrc/js/phuix/PHUIXAutocomplete.js' => '3601bdd1',
     'rsrc/js/phuix/PHUIXDropdownMenu.js' => 'bd4c8dca',
     'rsrc/js/phuix/PHUIXFormControl.js' => '8fba1997',
     'rsrc/js/phuix/PHUIXIconView.js' => 'bff6884b',
@@ -836,7 +836,7 @@
     'phui-workpanel-view-css' => 'adec7699',
     'phuix-action-list-view' => 'b5c256b8',
     'phuix-action-view' => '8cf6d262',
-    'phuix-autocomplete' => '3dfff01f',
+    'phuix-autocomplete' => '3601bdd1',
     'phuix-dropdown-menu' => 'bd4c8dca',
     'phuix-form-control-view' => '8fba1997',
     'phuix-icon-view' => 'bff6884b',
@@ -1064,6 +1064,12 @@
       'javelin-vector',
       'phuix-autocomplete',
     ),
+    '3601bdd1' => array(
+      'javelin-install',
+      'javelin-dom',
+      'phuix-icon-view',
+      'phabricator-prefab',
+    ),
     '3ab51e2c' => array(
       'javelin-behavior',
       'javelin-behavior-device',
@@ -1080,12 +1086,6 @@
       'javelin-util',
       'javelin-uri',
     ),
-    '3dfff01f' => array(
-      'javelin-install',
-      'javelin-dom',
-      'phuix-icon-view',
-      'phabricator-prefab',
-    ),
     '3ee3408b' => array(
       'javelin-behavior',
       'javelin-behavior-device',
diff --git a/webroot/rsrc/js/phuix/PHUIXAutocomplete.js b/webroot/rsrc/js/phuix/PHUIXAutocomplete.js
--- a/webroot/rsrc/js/phuix/PHUIXAutocomplete.js
+++ b/webroot/rsrc/js/phuix/PHUIXAutocomplete.js
@@ -111,6 +111,9 @@
         case '-': // Might be an unnumbered list.
         case '.': // Might be a numbered list.
         case '|': // Might be a table cell.
+        case '>': // Might be a blockquote.
+        case '!': // Might be a blockquote attribution line.
+        case ':': // Might be a "NOTE:".
           // We'll let these autocomplete.
           break;
         default: