Perf: Keep catalogues if fallback locales have no change

rr-it · web-flow · commit c216bb4683f6 · 2025-12-16T18:58:17.000+01:00
With this change a call to `Translator::setFallbackLocales()` will not clear the catalogues in case the current fallback locales are already equal to the newly to be set fallback locales.
diff --git a/src/Symfony/Component/Translation/Translator.php b/src/Symfony/Component/Translation/Translator.php
@@ -145,6 +145,12 @@ public function getLocale(): string
      */
     public function setFallbackLocales(array $locales): void
     {
+        if ($this->getFallbackLocales() === $locales) {
+            // No change in fallback locales:
+            // Do not clear catalogues as regeneration of catalogues is computational expensive.
+            return;
+        }
+
         // needed as the fallback locales are linked to the already loaded catalogues
         $this->catalogues = [];
 
