Backed out 1 changesets (bug 1423463) for failing due to syntax errors in /builds/worker/workspace/build/src/intl/locale/LocaleService.cpp r=backout on a CLOSED TREE

Backed out changeset 97f4bb99a1a9 (bug 1423463)

intl/locale/LocaleService.cpp

@@ -81,12 +81,14 @@ ReadRequestedLocales(nsTArray<nsCString>& aRetVal)
     if (str.Length() > 0) {
       for (const nsACString& part : str.Split(',')) {
         nsAutoCString locale(part);
-        if (locale.EqualsLiteral("ja-JP-mac")) {
+        if (SanitizeForBCP47(locale, true)) {
-          // This is a hack required to handle the special Mozilla `ja-JP-mac` locale.
+          // This is a hack required for us to handle the special Mozilla `ja-JP-mac`
-          if (!aRetVal.Contains(locale)) {
+          // locales. We sanitize the input to normalize the case etc. but in result
-            aRetVal.AppendElement(locale);
+          // the `ja-JP-mac` will get turned into a BCP47 tag. Here we're turning it
+          // back into the form expected by Gecko resources.
+          if (locale.EqualsLiteral("ja-JP-x-lvariant-mac")) {
+            locale.Assign("ja-JP-mac");
           }
-        } else if (SanitizeForBCP47(locale, true)) {
           if (!aRetVal.Contains(locale)) {
             aRetVal.AppendElement(locale);
           }
@@ -835,7 +837,7 @@ LocaleService::Locale::Locale(const nsCString& aLocale, bool aRange)
         }
         break;
       case 3:
-        if (part.EqualsLiteral("*") || part.Length() >= 3 && part.Length() <= 8) {
+        if (part.EqualsLiteral("*") || part.Length() == 3) {
           mVariant.Assign(part);
         }
         break;
@@ -990,11 +992,14 @@ LocaleService::SetRequestedLocales(const char** aRequested,
 
   for (uint32_t i = 0; i < aRequestedCount; i++) {
     nsAutoCString locale(aRequested[i]);
-    if (!locale.EqualsLiteral("ja-JP-mac") &&
+    if (!SanitizeForBCP47(locale, true)) {
-        !SanitizeForBCP47(locale, true)) {
       NS_ERROR("Invalid language tag provided to SetRequestedLocales!");
       return NS_ERROR_INVALID_ARG;
     }
+    if (locale.EqualsLiteral("ja-JP-x-lvariant-mac")) {
+      // This is a hack for our code to handle `ja-JP-mac` special case.
+      locale.Assign("ja-JP-mac");
+    }
 
     if (i > 0) {
       str.AppendLiteral(",");