Asymptote with option '-tex lualatex' makes an unexpected shift

[Lemures Lemniscati]

Date: Sat, 23 Nov 2019 23:15:04 +0000
From: Ken Brown

> 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.
> 

Thank you for testing.

The difference above seems irrelevant to the horizontal shift.

But, I have no idea...
And I've requested to reopen the issue https://github.com/vectorgraphics/asymptote/issues/123#issuecomment-557890681

--
Lem

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