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Message-ID:  <dfb11353-5f59-c1fc-b1ca-5173889695d7@morningstar2.co.uk>
Date:         Mon, 22 Mar 2021 17:05:22 +0000
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              <LATEX-L@LISTSERV.UNI-HEIDELBERG.DE>
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From:         Joseph Wright <joseph.wright@MORNINGSTAR2.CO.UK>
Subject: Re: Bug in fontdef.dtx?
To:           LATEX-L@LISTSERV.UNI-HEIDELBERG.DE
In-Reply-To:  <F9F9D8FE-A1E6-4E89-AB97-CD9D85D5C8F4@gmail.com>
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Envelope-To: <rainer.schoepf@gmx.net>
Status: R

On 22/03/2021 15:58, Don Hosek wrote:
> fontdef.dtx defines the various series, family and style defaults using \newcommand, e.g.
> 
> \newcommand\itdefault{it}
> \newcommand\sldefault{sl}
> \newcommand\scdefault{sc}
> \newcommand\updefault{up}
> 
> This gives defines them as \long However, the commands \fontfamily, \fontseries and \fontshape define \f@family, \f@series and \f@shape using \edef which maked the resulting values not \long
> 
> This means that code that would do something like, e.g., \ifx\f@shape\itdefault…\fi will not work as expected.
> 
> The simplest fix would be to use the starred form of \newcommand for setting the various \XXdefault values. I would imagine that this should not break anything
> 
> -dh
> 

They have been like this *for ever*: it's a feature I would say.

Joseph