Jon Wong schrieb am 21.12.2019 um 08:16:

expandtwoargsafter

The four commands \expandoneargafter \expandtwoargsafter \fullexpandoneargafter \fullexpandtwoargsafter don't exist anymore because you don't need them with any of the current engines. Many other commands like \expanded (\normalexpanded in ConTeXt) \protected (\unexpanded in ConTeXt) \unexpanded (\normalunexpanded in ConTeXt) have been added since the above mentioned commands where written and we also have Lua removes more restrictions. If you still have a problem which require the mentioned command you can give a simple example where you need it. Wolfgang