That works perfectly fine for German. For languages with latin-style alphabets it depends on how used people are to work with unaccented text. For some language

That works perfectly fine for German. For languages with latin-style alphabets it depends on how used people are to work with unaccented text. For some languages (for example Vietnamese[0]), the ASCII fallback modes are quite clumsy. Languages with non-latin alphabets might completely lack a standardized, widely used romanization system that works in ASCII. For Chinese and Japanese, using a romanization is not really an option. Most romanization systems are intended for academic study, as pronunciation aids and for input methods. Most varieties of Chinese have a huge number of homophones, and the romanization of such texts can be difficult to read unambiguously. [0]: https://en.m.wikipedia.org/wiki/Vietnamese_Quoted-Readable https://en.m.wikipedia.org/wiki/Vietnamese_Quoted-Readable