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From: Ken Brown <kbrown AT cornell DOT edu>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: Re: Asymptote with option '-tex lualatex' makes an unexpected shift
Date: Sat, 23 Nov 2019 23:15:04 +0000
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On 11/22/2019 7:53 PM, Ken Brown wrote:
> On 11/22/2019 7:24 AM, Lemures Lemniscati wrote:
>> Hi! And thank you for maintaining many packages!
>>
>> I've experienced a situation:
>>
>> Asymptote with option '-tex lualatex' makes an unexpected shift.
>> (I've installed all the texlive packages by setup*.exe.)
>>
>> I opened an issue on its main stream https://github.com/vectorgraphics/asymptote/issues/123
>>
>> But No one seems to reproduce it.
>> I don't know whether it is an issue only on cygwin or not.
>>
>> Does anyone have a good idea?
> 
> I can reproduce this, both with Cygwin's TeX Live packages and with native TeX
> Live on Cygwin, installed by following the instructions at
> 
>     https://www.tug.org/texlive/acquire-netinstall.html
> 
> starting with downloading install-tl-unx.tar.gz.
> 
> But I'm not yet convinced that this is a Cygwin issue.  Bowman said he couldn't
> see a difference between the two PDFs, but maybe he didn't know what to look
> for.  He didn't respond to your posts in which you supplied the two PDFs.  I'd
> like to try this myself on Linux before I conclude that it's a Cygwin issue.

I just tested this on Ubuntu 18.04 (which provides TeX Live 2017), and I saw the 
same shift.  So it's not a Cygwin issue.

FWIW, the intermediate files lualatex_.tex differ in exactly one place between 
the good (without luaotfload-main.lua) and bad (with luaotfload-main.lua) cases:

$ diff -u lualatex_with_luaotfload-main/lualatex_.tex 
lualatex_without_luaotfload-main/
--- lualatex_with_luaotfload-main/lualatex_.tex 2019-11-18 05:01:29.000000000 -0500
+++ lualatex_without_luaotfload-main/lualatex_.tex      2019-11-18 
05:02:07.000000000 -0500
@@ -57,5 +57,5 @@
  \definecolor{ASYcolor}{gray}{0.000000}\color{ASYcolor}
  \fontsize{12.000000}{14.400000}\selectfont
  \usefont{\ASYencoding}{\ASYfamily}{\ASYseries}{\ASYshape}%
-\ASYalign(15.767569,15.767569)(-0.500000,-0.260156){\TeX}%
+\ASYalign(15.767569,15.767569)(-0.500000,-0.264452){\TeX}%
  \end{document}

I don't know if this difference accounts for the shift.

Ken

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