On 7/3/2014 11:03 PM, Sanjoy Mahajan wrote:
math-stc.mkvi:
\unexpanded\def\math_stackers_make_double#top#bottom#category#codepoint#codeextra#text%
...
- \ifx\currentmathtext\empty
+ \ifx\m_math_stackers_text_middle\empty
\setbox\scratchboxthree\emptyhbox
\else
Thanks for looking into this, Wolfgang.
I made this change to math-stc.mkvi in the 2014.05.17 beta, then remade
the MkIV format with
mtxrun --selfupdate
mtxrun --generate
luatools --generate
context --make
context --make does a --generate so you can skip that and the luatools
run is not needed either (selfupdate is seldom needed too)
Then I ran context on my test file (with 30000 as the \dorecurse count).
However, the offset underbraces remain. I'm attaching a image from
p. 2128, by which point the offset is 20 or 30pt. I am fairly sure I am
running the newly created version, because remaking the format included
these lines:
open source > 1 > 256 >
/home/sanjoy/context/2014.05.17-beta/tex/texmf-context/tex/context/base/math-stc.mkvi
loading > ConTeXt Math Macros / Stackers
close source > 1 > 256 >
/home/sanjoy/context/2014.05.17-beta/tex/texmf-context/tex/context/base/math-stc.mkvi
and the log output from running the minimal.tex shows that the the fmt
is indeed dated 2014.7.3:
mtx-context | run 1: luatex
--fmt="/home/sanjoy/context/2014.05.17-beta/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luatex/cont-en"
--jobname="minimal"
--lua="/home/sanjoy/context/2014.05.17-beta/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luatex/cont-en.lui"
--no-parse-first-line --c:currentrun=1 --c:fulljobname="./minimal.tex" --c:input="./minimal.tex" --c:kindofrun=1
--c:maxnofruns=8 "cont-yes.mkiv"
This is LuaTeX, Version beta-0.79.1 (TeX Live 2014/dev) (rev 4972)
\write18 enabled.
open source > 1 > 1 >
/home/sanjoy/context/2014.05.17-beta/tex/texmf-context/tex/context/base/cont-yes.mkiv
ConTeXt ver: 2014.05.17 23:46 MKIV beta fmt: 2014.7.3 int: english/english
we get a .5pt height difference somewhere (nothing else different in a
trace) ... smells like a luatex bug (testing that now)
Hans
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