[dev-context] \definefontsize changes definition of \tf

Hi, the \definefontsize and \definefontalternative redefine the \tf (and \it etc.) command and you can’t use it in math to get \mathtf. \starttext \begingroup \meaning\tf \endgroup \begingroup \definefontsize[e] \meaning\tf \endgroup \begingroup \definefontalternative[md] \meaning\tf \endgroup \stoptext Wolfgang