texmath-0.3.1.3: tests/macros.tex

\newcommand{\abc}{5}
\newcommand{\def}[2][x]{%
#1 + #2%
}
\renewcommand{%
\phi%
}{%
\theta%
}
% comment
\newcommand{\a}{\b{2}}
\renewcommand{\phi}{\a}
\newcommand{\b}[1]{#1}

\phi
\abc
\def[y]{3}
\def{3}