ICU/CLDR | ISO 639 Changes - Monitoring & Maintenance
问题 The International Components for Unicode (ICU) is the underlying library that provides localisation features in various programming languages and environments; I approach this from PHP where the intl extension uses ICU for this purpose. As I understand it, ICU uses Unicode Common Locale Data Repository (CLDR) for identifying ISO 639 language codes. Language codes are subject to change The ISO 639 language codes are actively maintained and have been subject to quite substantial changes over