9

Basically what I want to do is underline ordinal indicators ª and º, because some fonts do not underline them.

11

You could use the TeX/LaTeX command \b to typeset a short "bar" below the letter in question.

enter image description here

\documentclass{article}
\newcommand{\ula}{\textsuperscript{\b{a}}} % "underlined a in superscript mode"
\newcommand{\ulo}{\textsuperscript{\b{o}}}
\begin{document}
N\ula, N\ulo
\end{document} 
  • The \b command doesn't seem to work with XeLaTeX. – Joseph Apr 14 '13 at 12:26
  • @Joseph - Could you be a bit more specific about the claim that the "\b command doesn't seem to work with XeLaTeX". I encounter no problems when I compile the above example using XeLaTeX, with or without the fontspec package being loaded as well. Do you maybe load a special font? – Mico Apr 14 '13 at 12:35
  • It doesn't work with fontspec with pretty much any font -- Minion, Myriad, you name it. It generates a dummy character to the right side of the superscript. – Joseph Apr 14 '13 at 13:06
  • @Joseph - You may have stumbled onto a bug in fontspec, in both XeLaTeX and LuaLaTeX. – Mico Apr 14 '13 at 20:14
  • Edit: I found fonts which work with Mico's command (for instance, Brill), but still, the underline doesn't feel right: I'd like it to get closer to the letter. Is that possible? – Joseph Aug 24 '14 at 21:06

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