LibUnicode: Do not generate data for "generic" calendars

This is not a calendar supported by ECMA-402, so let's not waste space
with its data.

Further, don't generate "gregorian" as a valid Unicode locale extension
keyword. It's an invalid type identifier, thus cannot be used in locales
such as "en-u-ca-gregorian".

1 files changed, 5 insertions, 0 deletions

diff --git a/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeDateTimeFormat.cpp b/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeDateTimeFormat.cpp
index 89ed709092..607993d790 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeDateTimeFormat.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeDateTimeFormat.cpp
@@ -151,6 +151,11 @@ static ErrorOr<void> parse_calendars(String locale_calendars_path, UnicodeLocale
     };
 
     calendars_object.as_object().for_each_member([&](auto const& calendar_name, JsonValue const& value) {
+        // The generic calendar is not a supported Unicode calendar key, so skip it:
+        // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/Locale/calendar#unicode_calendar_keys
+        if (calendar_name == "generic"sv)
+            return;
+
         auto& calendar = ensure_calendar(calendar_name);
 
         if (!locale_data.calendars.contains_slow(calendar_name))