\extrarowheight\z@%
\col@sep\smarraycolsep%
\let\tab@extrasep\smarrayextrasep%
- \def\tab@bmaths{$\color@begingroup\scriptstyle}%
+ \def\tab@bmaths{\color@begingroup$\scriptstyle}%
\def\tab@btext{\begingroup\scriptsize}%
\setbox\z@\hbox{\scriptsize\strut}%
\dimen@\ht\z@\dimen@ii\dp\z@\tab@setstrut%