On 1/12/2022 7:00 PM, Javier Bezos wrote:
Hello,
Consider the following document, typeset with 1.13.2 (TeX Live
2021/W32TeX):
==================================
Lorem ipsum dolor sit amet, consectetur adipiscing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
$$(a+b)^2 = a^2+2ab+b^2 \eqno (1.10)$$
Lorem ipsum dolor sit amet, consectetur adipiscing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
$$(a+b)^2 = a^2+2ab+b^2 \leqno (1.10)$$
Lorem ipsum dolor sit amet, consectetur adipiscing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
\textdir TRT \pardir TRT \bodydir TRT \pagedir TRT
Lorem ipsum dolor sit amet, consectetur adipiscing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
$$(a+b)^2 = a^2+2ab+b^2 \eqno (1.10)$$
Lorem ipsum dolor sit amet, consectetur adipiscing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
$$(a+b)^2 = a^2+2ab+b^2 \leqno (1.10)$$
Lorem ipsum dolor sit amet, consectetur adipiscing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
\bye
\predisplaydirection=0 might help here (defaults to -1)
that code is very unlikely to be changed (already tricky enough)
===================================
The result is http://www.texnia.com/archive/luamathskip.pdf
As you can see, the labels are reversed, but the calculations for
the vertical skips, based on the previous line, are not. Either
the labels shouldn’t be reversed (which makes sense for me,
because conceptually we are in math and not in a paragraph) or
the calculations have to be fixed.
Please, fix also the long standing bug which misplaces the label
with leqno when \pardir (but no other dirs) is set to TRT.
I'll look into it (in luatex maybe under some flag/mode control because
we are frozen).
Hans
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Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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