Bug 1982959 - Handle accept languages params for URL results from the search config. a=RyanVM DONTBUILD

Original Revision: https://phabricator.services.mozilla.com/D261052

Differential Revision: https://phabricator.services.mozilla.com/D262026

Author: mandysGit

toolkit/components/search/SearchEngine.sys.mjs

@@ -44,6 +44,8 @@ const OS_PARAM_COUNT_DEF = "20"; // 20 results
 const OS_PARAM_START_INDEX_DEF = "1"; // start at 1st result
 const OS_PARAM_START_PAGE_DEF = "1"; // 1st page
 
+const PARAM_ACCEPT_LANGUAGES = "acceptLanguages";
+
 // A array of arrays containing parameters that we don't fully support, and
 // their default values. We will only send values for these parameters if
 // required, since our values are just really arbitrary "guesses" that should
@@ -163,6 +165,15 @@ function paramSubstitution(paramValue, searchTerms, queryCharset) {
       return queryCharset;
     }
 
+    // Handle languages for URL results.
+    if (name == PARAM_ACCEPT_LANGUAGES) {
+      let languages = Services.prefs
+        .getComplexValue("intl.accept_languages", Ci.nsIPrefLocalizedString)
+        .data.replace(/\s+/g, "");
+
+      return languages || "";
+    }
+
     // Handle the less common OpenSearch parameters we're confident about.
     if (name == OS_PARAM_LANGUAGE) {
       return Services.locale.requestedLocale || OS_PARAM_LANGUAGE_DEF;

toolkit/components/search/tests/xpcshell/test_getSubmission_params.js

@@ -18,6 +18,12 @@ const TESTS = [
 
   { param: "{language}", expected: Services.locale.requestedLocale },
   { param: "{language?}", expected: Services.locale.requestedLocale },
+  {
+    param: "{acceptLanguages}",
+    expected: Services.prefs
+      .getComplexValue("intl.accept_languages", Ci.nsIPrefLocalizedString)
+      .data.replace(/\s+/g, ""),
+  },
 
   { param: "{inputEncoding}", charset: "UTF-8", expected: "UTF-8" },
   {