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Re: @L and @l print visible space char in code

From: Gavin Smith
Subject: Re: @L and @l print visible space char in code
Date: Mon, 1 Nov 2021 16:22:45 +0000
User-agent: Mutt/1.9.4 (2018-02-28)

On Sun, Oct 31, 2021 at 04:49:18PM -0600, Karl Berry wrote:
> Hi Gavin and all - the Texinfo input 
>   @code{@l{} and @L{}}
> outputs visible space characters before regular l and L, llapped in the
> case of the L, instead of Polish l and L.
> (Complete input file and my output below.) It happens with the latest
> released texinfo.tex and the one in the source repo.
> I believe this is because the plain TeX definitions of \l and \L are
> the active ones, and they typeset character 32. In the cmtt fonts,
> character 32 is the visible space, whereas in the cmr (and other cm),
> char32 is the weird "Polish bar" character used to construct the Polish
> l's. From plain.tex:
> \def\l{\char32l}
> \def\L{\leavevmode\setbox0\hbox{L}\hbox to\wd0{\hss\char32L}}
> The best fix I can think of is for Texinfo to have its own \l and \L
> definitions which check for a monospaced context (\ifmonospace) and
> switch to an EC typewriter font which provides the Polish l's, as we do
> for @DH{} and other characters. Well, I'm assuming the ec fonts have
> typewriter Polish l's; I confess I didn't check, sorry.

They are supposed to use the "T1" encoding and they do contain the needed
glyphs.  I've made the change to support them in commit bd9b63f6c5.  Hope
this works okay.

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