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Re: Math styles

From: Hans Åberg
Subject: Re: Math styles
Date: Wed, 24 May 2017 22:38:22 +0200

> On 24 May 2017, at 22:08, Gavin Smith <address@hidden> wrote:
> On Tue, May 23, 2017 at 07:10:53PM +0200, Hans Åberg wrote:
>> [I am not on list, so please cc me.]
>> . I want to use Texinfo for a program that uses UTF-8 @code, including 
>> math styles, and as such, the solution to that does not matter. Cf. 
>> sample [1]. Perhaps it requires some further development:
> I am sorry, I do not understand what it is you are trying to do. I 
> looked at the file sample.1.pdf and it looked fine compared with the
> source sample.texi.

> I saw that sample.0.pdf was wrong.  What was the difference in the way
> you generated sample.0.pdf and sample.1.pdf?

The sample.0.pdf is what I get if not including the OTF hacks, sample.1.pdf is 
what it should look like, mostly, in terms of @math and @code. But still, 'ö' 
in the text body, if put there, is translated by texinfo.tex into the classical 
TeX command \"o and written out verbatim.

Also, I discovered that this does not work:
  @cindex ⇒
  @cindex ¬
It results in the error:
  String contains an invalid utf-8 sequence
There are some character translations causing this, it seems.

>> One problem is that 'info' generation does not accept user defined 
>> commands like @stixfonts, nor is it possible to use @tex as it creates 
>> an environment. 
> I couldn't see '@stixfonts' in any of the files, so I don't know what
> that means.

It is in the file sample.texi, the first few lines:
  \input luaotfload.sty
  \input luatex-math-modified.tex

  \input texinfo @c -*-texinfo-*-


The first file calls a large directory (in TeXLive 2016) that makes LuaTeX able 
to deal with OTF fonts, originally lifted out of ConTeXt. The second file, from 
ConTeXt, originally named luatex-math.tex, contains font specific hooks to TeX, 
modified to define a \stixfont macro specific to the STIX font. The last line, 
@stixfont calls this macro; the call must be global for the override to work.

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