\newcount\res \def\test#1{% \setbox0\hbox{#1\global\res=\lastnodechar\global\xdef\rf{\the\lastnodefont}}% \leavevmode\hbox to 5em{\hss \the\res}, \hbox to 10em{\tentt\meaning\rf\hss}% \copy0\par} \global\res=\lastnodechar\xdef\rf{\the\lastnodefont}\the\res. {\tentt \meaning\rf} \ybaselineshift-10pt \setbox0\vbox{\vskip10pt\global\res=\lastnodechar\global\xdef\rf{\the\lastnodefont}}% \leavevmode\hbox to 5em{\hss \the\res}, \hbox to 10em{\tentt\meaning\rf\hss}% \test{} \test{a} \test{ffi} \test{漢)} \test{漢字} \hbox{\tate \test{漢字}} \test{あ\kern-1pt} \test{あ\hskip10pt} \test{あ\/} \bye