This is a testharness.js-based test.
FAIL Registering valid custom element types with base char assert_unreached: The custom element name 'x-℮-x212e' should be registered without errors Reached unreachable code
PASS Registering valid custom element types with ideographic char 
PASS Registering valid custom element types with digit chars 
PASS Registering valid custom element types with characters '.', '-', '_' 
FAIL Registering valid custom element types with combining char assert_unreached: The custom element name 'x-۝-x6dd' should be registered without errors Reached unreachable code
PASS Registering valid custom element types with extender char 
Harness: the test ran to completion.

