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I need to perform a test on the current font shape. More specifically, I need to detect whether the current font shape is italic or slanted.

Joseph Wright already provided a solution in his answer to Detect which text "mode" (normal, italic, bold, etc.) is currently in use?. For instance, if you define

\newcommand*{\my@test@it}{it}

then

\ifx\f@shape\my@test@it

will be true if the current font shape is italics.

However, as I'm trying to avoid code duplication as much as possible, I'm wondering whether there really is a need to define macros that expands to it (for italics), sl (for slanted), etc. I suspect there may already exist such macros, perhaps defined in the LaTeX kernel. Is that the case? If so, what are those macros called?

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2 Answers 2

Reset to default
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I suppose that you are looking for \bfdefault, \itdefault and stuff:

$ for x in bf it sl md up rm sf tt; do texdef -t latex ${x}default; done; \bfdefault: \long macro:->bx \itdefault: \long macro:->it \sldefault: \long macro:->sl \mddefault: \long macro:->m \updefault: \long macro:->n \rmdefault: \long macro:->cmr \sfdefault: \long macro:->cmss \ttdefault: \long macro:->cmtt

Be careful since they are all \long.

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  • That looks like what I'm looking for, but \slshape\ifx\f@shape\sldefault fails. I guess it's got to do with this \sldefault being long whereas \f@shape isn't... Commented Mar 6, 2014 at 13:12
  • According to this comment by Joseph, I'm on the right track. I'll figure something out. I'll accept your answer. Thanks. Commented Mar 6, 2014 at 13:28
  • These are right only if not changed: you can't be sure that they'll always expand in the desired way Commented Mar 6, 2014 at 13:57
  • @JosephWright Depends what's "right". They'll show if the current setting was accomplished by \slshape. Commented Mar 6, 2014 at 14:31
  • @tohecz Yes, but not if the current setting has absolute code sl, for example: depends what you want to test for Commented Mar 6, 2014 at 14:34
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Can easily be extended to what you need

\documentclass{article} \usepackage[T1]{fontenc} \makeatletter \def\getFSh#1/#2/#3/#4\@nil{#4} \def\getFSe#1/#2/#3/#4\@nil{#3} \begin{document} \itshape \curr@fontshape --> \expandafter\getFSh\curr@fontshape\@nil \slshape \curr@fontshape --> \expandafter\getFSh\curr@fontshape\@nil \bfseries \curr@fontshape --> \expandafter\getFSe\curr@fontshape\@nil\relax, \expandafter\getFSh\curr@fontshape\@nil \end{document}

enter image description here

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  • Not a direct answer to my question, but still useful. Thanks. Commented Mar 6, 2014 at 13:08
  • @Jubobs See nfssext-cfr and nfssext for examples using this sort of approach. Commented Mar 7, 2014 at 2:24

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