[XeTeX] "if" tests for italic / bold into new command?

[Kārlis Repsons]

On Wednesday 23 December 2009 13:26:28 Kārlis Repsons wrote:
> On Wednesday 23 December 2009 13:07:41 Andrew Moschou wrote:
> > My metalogo package mentions these:
> >
> > \ifdim\fontdimen\@ne\font\z@ is true if the current font is not slanted.
> > \if b\expandafter\@car\f at series\@nil is true if the current font is bold.
> >
> > Here's an example:
> >
> > \documentclass{article}
> >
> > \makeatletter
> > \usepackage{fontspec}
> > \setmainfont{Georgia}
> >
> > \newcommand\test{
> >   \ifdim\fontdimen\@ne\font=\z@
> >     Is upright
> >   \else
> >     Is italic or slanted
> >   \fi
> >   \if b\expandafter\@car\f at series\@nil
> >     Is bold
> >   \else
> >     Is not bold
> >   \fi}
> >
> > \begin{document}
> > Something \test. \textit{Something \test.}
> >
> > \bfseries Something \test. \textit{Something \test.}
> > \end{document}
> >
> > It should be possible to to create new ifs based on these, say \ifbold
> > and \ifitalic, which I intend to put into the next update to metalogo.
> >
> > Andrew
> 
> Thank you! However, I was thinking about specified font name (string) and
> subsequent test within the new command. Could that be done?
Sorry, I didn't clarified again: to test if font named X has bold/italic/..!
My command just receives a font name and has to demonstrate font features...
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