gistfile1.tex

%% Note, the definitions of TeX and LaTeX are in texnames.sty file

%% Code from texnames.sty
\ifx\sc\undefined
    \def\sc{%
      % If there is no \scriptfont for the current family, use a fixed
      % font.  What more can we do?
      \expandafter\ifx\the\scriptfont\fam\nullfont
        \font\temp = cmr7 \temp
      \else
        \the\scriptfont\fam
      \fi
      \def\uppercasesc{\char\uccode`}%
    }%
\fi
\ifx\uppercasesc\undefined
  \let\uppercasesc = \relax
\fi

\newcommand{\JBA}[2]{
    \textcolor{#1}{J\kern-.0em\raise.6ex\hbox{\sc \uppercasesc b}}%
    \textcolor{#2}{\kern-.20em\lower.33ex\hbox{A}\spacefactor1000}
}