topic: Sort localized list case insensitively

include/class.i18n.php

@@ -461,6 +461,28 @@ class Internationalization {
         return $locales;
     }
 
+    static function sortKeyedList($list, $case=false) {
+        global $cfg;
+
+        if ($cfg && function_exists('collator_create')) {
+            $coll = Collator::create($cfg->getPrimaryLanguage());
+            if (!$case)
+                $coll->setStrength(Collator::TERTIARY);
+            // UASORT is necessary to preserve the keys
+            uasort($list, function($a, $b) use ($coll) {
+                return $coll->compare($a, $b); });
+        }
+        else {
+            if (!$case)
+                uasort($list, function($a, $b) {
+                    return strcmp(mb_strtoupper($a), mb_strtoupper($b)); });
+            else
+                // Really only works on ascii names
+                asort($list);
+        }
+        return $list;
+    }
+
     static function bootstrap() {
 
         require_once INCLUDE_DIR . 'class.translation.php';

include/class.topic.php

@@ -347,10 +347,12 @@ implements TemplateVariable {
             $requested_names[$id] = $n;
         }
 
-        // XXX: If localization requested and the current locale is not the
+        // If localization requested and the current locale is not the
         // primary, the list may need to be sorted. Caching is ok here,
         // because the locale is not going to be changed within a single
         // request.
+        if ($localize)
+            return Internationalization::sortKeyedList($requested_names);
 
         return $requested_names;
     }
@@ -520,16 +522,7 @@ implements TemplateVariable {
         if (!($names = static::getHelpTopics(false, true, false)))
             return;
 
-        if ($cfg && function_exists('collator_create')) {
-            $coll = Collator::create($cfg->getPrimaryLanguage());
-            // UASORT is necessary to preserve the keys
-            uasort($names, function($a, $b) use ($coll) {
-                return $coll->compare($a, $b); });
-        }
-        else {
-            // Really only works on English names
-            asort($names);
-        }
+        $names = Internationalization::sortKeyedList($names);
 
         $update = array_keys($names);
         foreach ($update as $idx=>&$id) {