From da223f49f7e07ef2a94de0d4b075a9d5b049cf20 Mon Sep 17 00:00:00 2001
From: diodiogod <160325160+diodiogod@users.noreply.github.com>
Date: Fri, 31 Oct 2025 18:38:58 -0300
Subject: [PATCH] Fix language code detection: load supported languages on
 module init

Ensure SUPPORTED_LANGUAGES in language-constants.js is populated with all 55 codes
before event handlers run, so isLanguageCode() works correctly. Prevents duplicate
language codes like [hr:|hr:|...] by properly detecting language codes vs parameters.
---
 web/widget-event-handlers.js | 4 ++--
 web/widget-ui-builder.js     | 4 ++++
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/web/widget-event-handlers.js b/web/widget-event-handlers.js
index 8ab599e1..07964eb5 100644
--- a/web/widget-event-handlers.js
+++ b/web/widget-event-handlers.js
@@ -215,8 +215,8 @@ export function attachAllEventHandlers(
                 if (isLanguageCode(beforeColon)) {
                     // It's already a language tag - only update if language is different
                     if (beforeColon === lang) {
-                        // Same language already exists, don't add duplicate
-                        return null;
+                        // Same language already exists, return unchanged
+                        return tagContent;
                     } else {
                         // Replace the language part with new language
                         const charPart = firstPart.substring(colonIndex + 1);
diff --git a/web/widget-ui-builder.js b/web/widget-ui-builder.js
index eaa5afef..ac7d3a15 100644
--- a/web/widget-ui-builder.js
+++ b/web/widget-ui-builder.js
@@ -5,6 +5,10 @@
  */
 
 import { TagUtilities } from "./tag-utilities.js";
+import { loadSupportedLanguages } from "./language-constants.js";
+
+// Load supported languages into memory on module load
+loadSupportedLanguages();
 
 export function buildHistorySection(state, storageKey) {
     const historySection = document.createElement("div");