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When I add \textcolor to \textoverline, I get:

Error: Undefined control sequence.

I need to use color and textoverline for the same text. It is not working with me. Here is the code:

\documentclass{article}
\newsavebox\TBox
\def\textoverline#1{\savebox\TBox{#1}%
  \makebox[0pt][l]{#1}\rule[1.1\ht\TBox]{\wd\TBox}{0.4pt}}
\begin{document}

\textcolor{red} {\textoverline{foo}}

\end{document}
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  • 5
    In preamble you should add package color or xcolor
    – Zarko
    Mar 7, 2017 at 2:23
  • BTW, your definition does not allow line breaks. It is better use \usepackage{umoline} ... \Overline{foo}, imho.
    – Fran
    Mar 7, 2017 at 3:08
  • The undefined-control-sequence error message occurs at \textcolor, not at \textoverline. As @Zarko has noted, load a package such as xcolor.
    – Mico
    Mar 7, 2017 at 6:11

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