[NTG-context] \starttexdefinition and @ in macroname in mkvi

Hi, @, !, _ etc.\ are not recognized as part of the macro name when using MkVI named arguments with \starttexdefinition. For example, consider the following example: \unprotect \starttexdefinition test@again #name Name is #name \stoptexdefinition \protect Processing this file using mtxrun --script interface --preprocess test.mkvi --force shows that #name is not recognized as a parameter. The preprocessing works if I remove the @ from the macro name. Aditya