diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -968,6 +968,7 @@
     'nonempty' => 'utils/utils.php',
     'phlog' => 'error/phlog.php',
     'pht' => 'internationalization/pht.php',
+    'pht_list' => 'internationalization/pht.php',
     'phutil_build_http_querystring' => 'utils/utils.php',
     'phutil_build_http_querystring_from_pairs' => 'utils/utils.php',
     'phutil_censor_credentials' => 'utils/utils.php',
diff --git a/src/internationalization/pht.php b/src/internationalization/pht.php
--- a/src/internationalization/pht.php
+++ b/src/internationalization/pht.php
@@ -44,3 +44,7 @@
 function phutil_person(PhutilPerson $person) {
   return $person;
 }
+
+function pht_list(array $items) {
+  return implode(', ', $items);
+}