It's "(user-defined) literal operators for Qt string types", not "(user-defined) string literal operators for Qt types". The latter sounds like there could be string literal operators for arbitrary Qt types, which is decidedly not the case. The namespace is called StringLiterals, yes, but it means "literals for strings", like chrono_literals means "literals for chrono types". Amends e440fec7fc729342dce7c8421618a95dab11a36b. Pick-to: 6.10 6.8 6.5 Change-Id: I728ee02ebc971812d5daa9fcc753093f4c0a20a3 Reviewed-by: Edward Welbourne <edward.welbourne@qt.io> Reviewed-by: Paul Wicking <paul.wicking@qt.io>