\setupnotedefinition
[footnote]
[ location=left,
headalign=flushright,
width=1em,
distance=1ex]
This comes very close to what I have in mind :-)
Is it possible to not fix the width globally but rather use the largest actual
width encountered in any single footnote block? That
Would be nice to know. In my publication list after all titles are two
points, like:
That's the title. .
Realy ugly and I don't know why. Is that a known problem?
Well, that you can easily avoid by not putting a full stop after the title in
the database if I'm not mistaken :-) Usually
Would be nice to know. In my publication list after all titles are two
points, like:
That's the title. .
Realy ugly and I don't know why. Is that a known problem?
Well, that you can easily avoid by not putting a full stop after the title
in the database if I'm not mistaken :-)
%D \macros
%D {doiftextelse, doiftext}
%D
%D When \type {\doifelse} cum suis hopelessly fail, for
%D instance because we pass data, we can fall back on the next
%D macro:
%D
%D \starttyping
%D \doiftextelse {data} {then branch} {else branch}
%D \doiftext {data} {then branch}
%D
Dear all,
is there a way to align the numbers in the footnote block (flush) right as is
done without the key location=left in the following? I don't want the numbers
in the margin though…
---
\setupdescriptions
[footnote]
[location=left,
distance=1ex]
\setupnote
[footnote]
Dear all,
is there a way for the bibliography style to scan back for punctuation marks
before it inserts punctuation of its own? Please see
---
\startpublication
[a={Ellen Dissanayake},
k=DIS:wha,
t=book,
y=1988]
\author{Ellen}[E.]{}{Dissanayake}
\lang{en}
Dear all,
I'm struggling with quotation blocks and proper placing of citations… In an
ideal world I'd be striving for something like this:
\startquotation[source=…]
\input tufte
\stopquotation
where … could be either of:
1. a simple string: {Edward Tufte},
2. a citation command:
Dear all,
is it possible to have entries in the table of contents not indented at all
whenever they stem from unnumbered headings? For example:
---
\starttext
\startfrontmatter
\completecontent
\chapter{Preface}
\stopfrontmatter
\startbodymatter
\part{Test}
Hi all,
how would I make sure that \ss always uses one set of font features while \rm
always uses the default feature set? Do I need to specify this in the
typescript file?
The reason is I'm using Myriad as \ss font and would like to enable the capital
spacing (cpsp) OpenType feature for that
Hi all,
I'm just trying to wrap my mind around why the following doesn't work as I
expect:
--
\setupheadertexts
[]
[{\doifsomething{\getmarking[sectionnumber]}{\getmarking[sectionnumber]\enskip}\getmarking[section]}]
Hi there,
I'm experiencing a very strange error related to unicode at the moment and I
can't pin down the problem for the life of me…
The situation: I'm using context mkvi (2011.04.20 16:23) on Mac OS 10.6.7 (with
the latest font patches in particular) and TeXShop 2.41. In my tex source file
I'm in need for a few custom cite commands like these:
1. \cite[alternative=authortitle, extras={, p.\,13}][citekey] should yield
{\sc AuthorLastName}, AuthorFirstName, {\it title}, p.\,13
2. \cite[alternative=title][citekey]
{\it title}
How would I code these commands?
There is
Has anyone seen this before? I wanted to ask up front before I really start
digging into the issue… I might have missed something obvious.
Check the hexdump of the file. Chances are that one of them has í directly,
and one a combination of dotlessiacuteaccent.
Awesome hint… hits the nail
Awesome hint… hits the nail on the head! The faulty version (i.e. the one
not appearing in the PDF with Minion Pro) isdotlessiacuteaccent
(whereacuteaccent appears to translate to CC81 in hex, correct?).
Yes. Useful site for find out stuff like that without having to do utf-8
Dear all,
I'm in need for a few custom cite commands like these:
1. \cite[alternative=authortitle, extras={, p.\,13}][citekey] should yield
{\sc AuthorLastName}, AuthorFirstName, {\it title}, p.\,13
2. \cite[alternative=title][citekey]
{\it title}
How would I code these commands?
Oliver
Use “textstyle”, command keys expect commands with argument and not
font/style switches.
Thanks for the explanation. Will keep that in mind…
Oliver
___
If your question is of interest to others as well, please add
Dear all,
there appears to be a bug in the handling of font features in footnotes… the
following messes up the footnote block in 2011.04.20 16:23, but yields the
expected result in 2011.02.14 23:30.
---
\definefontfeature
[superscripts]
[default]
[sups=yes]
\usetypefile
there appears to be a bug in the handling of font features in footnotes… the
following messes up the footnote block in 2011.04.20 16:23, but yields the
expected result in 2011.02.14 23:30.
Even shorter example (with Latin Modern):
---
\definefontfeature
[superscripts]
[default]
This should do the trick:
\define[1]\PagenumberCommand
{\smash[d]{#1}}
\setuppagenumbering
[ strut=no,
command=\PagenumberCommand]
And how well it does it!
Now I managed to align the last line of the grid with the textblock's frame:
---
\definemeasure
[gridWidth]
Dear all,
I'm having a little trouble with grids and page layout…
I'm trying to align the first and last line of a page properly with the frame
of the textblock. That is, I'd like to position the first baseline a certain
distance below the textblock's upper border (say, the height of a C or
Also I'd like to typeset the page number flush with the lower border of the
footer frame. How would I achieve that?
\setuppagenumbering[strut=no]
That's wonderful!
Any idea about the other thing?
Thanks,
Oliver
Also I'd like to typeset the page number flush with the lower border of the
footer frame. How would I achieve that?
\setuppagenumbering[strut=no]
I just realized that when I use oldstyle figures any pagenumber with a
descender is bumped upwards a little. Is there a way to have them
I just realized that when I use oldstyle figures any pagenumber with a
descender is bumped upwards a little. Is there a way to have them protrude
(vertically) beyond the frame border?
This should do the trick:
\define[1]\PagenumberCommand
{\smash[d]{#1}}
\setuppagenumbering
[
I was wondering because not too long ago (e.g. 2010.11.12 18:22 MKIV) this
didn't happen… are included files now automatically terminated by an
implicit
\par? Personally I would find that confusing.
No answer to your question, just a workaround:
\starttext
\section{Paragraph}
\input
Not sure if there are side effects but this works (requires mkiv and a recent
installation):
\setuplayout[grid=yes]\showgrid
\setupbodyfont[14pt]
\usemodule[annotation]
\define[2]\ZitatCommand
{\topskip\dimexpr\topskip+\lineheight/2\relax
\startnarrower
“#2”%
\stopnarrower}
here's a bug with quotations in 2011.02.11 18:18 MKIV:
---
\starttext
\startquotation
\input tufte
\stopquotation
\stoptext
---
The closing delimiter should be placed on the same line.
This isn’t a bug, the included file ends the paragraph before
\stopquotation adds the right
Unfortunately introducing a \blank just before the last \input tufte in
the above example breaks grid alignment.
The afterspace-value from \stopzitat is ignored with your \blank and you get
only one empty line while you need one and a half (one from the \blank
command and a half from
In the long run would it be possible in grid mode to have \blank insert 1+x
lines of vertical space where x is adjusted such that the following material
is aligned on the grid?
… or simply make it not swallow the previous halfline correction from the
quotation?
Oliver
Hi,
here's a bug with quotations in 2011.02.11 18:18 MKIV:
---
\starttext
\startquotation
\input tufte
\stopquotation
\stoptext
---
The closing delimiter should be placed on the same line.
Oliver
___
If your
I want to have both a halfline space before and after blockquotations.
Normally, this works fine; after the quotation the main text snaps
back to the grid (see page 3 of the example file).
\setupdelimitedtext
[blockquote]
[spacebefore=halfline]
spacebefore={force,halfline}
Hello
I want to have both a halfline space before and after blockquotations.
Normally, this works fine; after the quotation the main text snaps
back to the grid (see page 3 of the example file).
\setupdelimitedtext
[blockquote]
[spacebefore=halfline]
spacebefore={force,halfline}
Hello
Hi,
I'm trying to access a few glyphs:
---
\usetypescript
[cambria]
\setupbodyfont
[cambria]
\starttext
n-ary summation (base), U+02211: \char02211
n-ary summation (next), U+F0419: \charF0419
n-ary summation (next), U+F041A: \charF041A
cyrillic capital
The F0* codes are internal to context/luatex and are font specific (if
at some point you decided to use another font, or updated version of the
same font, you will be getting completely different glyphs if anything at
all).
You can use glyph names which are a bit more portable:
The latest mtxrun (on both pragma-ade and in minimals) does not contain
any 'v' on line 8736, so something must have gone wrong in the local
update process.
Yes, it turned out a syncronization issue. For some reason I got old stuff in
the texmf-osx-intel/bin until two days ago when updating
today's beta yields the following console output:
---
/usr/texbin/mtxrun:8736: attempt to concatenate local 'v' (a table value)
---
The exact problem persists on my machine (Mac OS 10.6.4) after updating the
minimals to 2010.10.22 16:46 beta :-(
Can anyone else reproduce this?
Oliver
Dear all,
today's beta yields the following console output:
---
/usr/texbin/mtxrun:8736: attempt to concatenate local 'v' (a table value)
---
:-(
Best,
Oliver
___
If your question is of interest to others as well,
Do you want to say that you are trying to revive your ConTeXt
Minimals for Mac project? Else mtxrun should probably not come from
/usr/texbin.
I deny everything.
(Reusing a recent quote :-)
Oliver
___
If your
Hi all,
I need directions on how to get started with a virtual math font... I'd like to
take an existing math font, say Latin Modern, and replace certain glyphs by
their corresponding ones from an OpenType font, say Minion Pro. (Proper math
kerning won't be an issue at the moment since I'm
I need directions on how to get started with a virtual math font... I'd like
to take an existing math font, say Latin Modern, and replace certain glyphs
by their corresponding ones from an OpenType font, say Minion Pro. (Proper
math kerning won't be an issue at the moment since I'm having
This reminds me. Two columns of text over three columns of footnotes.
Is it possible?
___
preformatted with
1. Ibidem| 2. Ibidem |3. Ibidem
? ;-)
And what about a footnote
Clearly, this gives me each glyph individually but stacked on top of
each other. What I need though is that the second figure looks
exactly like the first one (with all glyphs in the right location)
except that the grey bounding boxes appear per glyph.
I know what you want now, but I have
And what about a footnote block as one contiguous paragraph? That is,
footnote items don't start a new line:
1. Explanation \someseparatingglyph 2. Some more
explanation \someseparatingglyph 3. Comment etc.
Would that be possible?
Hi all,
Today I started preparations for my activities at the ConTeXt meeting.
There are two small lua tutorials in the program, and I am looking
for input on both. There is one that is supposed to be a general
beginner's introduction, and one specifically about fonts.
For both, I am
Now onto step two: how can I typeset each glyph in the formula individually
such that it appears precisely in the right location?
I must be misreading something here, but I cannot figure out what
'the right location' means.
Since textext() always returns a single picture that can't be
so, if in mkiv you want pieces, you need to textext each snippet that you
want as such
Alright... in that case how would I make sure that all glyph positions are
kept if my TeX material is, say, some complex formula? How could I find the
baseline with textext?
see mp.mplib for all
the fact that you have pieces in mkii is a side effect of dvitomp turning dvi
output in mp pictures; in the process it combines glyphs that have no kerning
and whatever spacing becomes shifts
Oh, I didn't know the pieces used to come about by accident... actually, by a
rather favourable
I always develop a kind of romantic relationship with the tools I use, I
either hate it and stop using it no matter what it can or can not do; I
hate OpenOffice and Qt, for example, and I would never, willingly use
either. On the other hand, when I love some tool I never turn my back to
it,
Hi,
I've been trying to troubleshoot a problem with TeX labels I ran into the other
day... finally I discovered that
1. MkIV (textext) includes TeX material as one single chunk apparently while
MkII (btex ... etex) used to include a decomposable picture and that
2. the anchor point is
No answer :-( Does that mean it's impossible with current technology?
Oliver
is it possible to pass data from MetaPost back to TeX? This would be
similar in spirit to, say, the MetaPost variable BodyFontSize that contains
data from the TeX surrounding. Just the other way round.
maybe
is it possible to pass data from MetaPost back to TeX? This would be similar
in spirit to, say, the MetaPost variable BodyFontSize that contains data
from the TeX surrounding. Just the other way round.
maybe future mlib versions will provide something like that (writing
something from mp
How do you enable your PDFs so that you can add handwritten notes?
in Adobe Acrobat Professional:
Comments | Enable for commenting and analysis in Adobe Reader...
Then when the file is opened in Adobe Reader open up the appropriate toolbars.
Does that mean you can make handwritten
Dear all,
is it possible to pass data from MetaPost back to TeX? This would be similar in
spirit to, say, the MetaPost variable BodyFontSize that contains data from the
TeX surrounding. Just the other way round.
Best,
Oliver Buerschaper
I have a full TeX suite on it (w32tex since I'm running on a 4GB SSD), as
well as traditional graphic design programs like FreeHand and FontLab.
Handwriting recognition works well and allows me to not carry the added
weight of a keyboard. Using a stylus works well for me and is very
Hi everyone,
this has probably been asked before: how can I use the Lua font loading
mechanism to inspect an OTF font? I'm mainly interested in retrieving glyph
data such as its shape or kerning properties... please advise :-)
Many thanks,
Oliver
Hi all,
ConTeXt has many features but sometimes there is something missing, what
feature or package do you miss which is already available in another TeX
system or unavailable in any TeX system?
Wolfgang
1. While TeX has been very strong at typesetting math traditionally its rivals
You need textbackground to draw the frame around the text
That's the funny thing ... apparently I don't! See the code in my previous
mail. There I seem to get the frame from the \setlayerframed command alone.
You can still write the text in a buffer and use the buffer in the
streamlayer.
But the frame from setlayerframed has not the measures of the text,
to get the correct size you need textbackground.
Ah, I see! The reason I asked is I didn't see any frame with your code... I
presume I need to hook some MP overlay into textbackground?
width:
\startsetups streamlayer:test:settings
\overloadtextwidth{12cm}
\stopsetups
frame:
\definetextbackground[testframe]
\startstreamlayer[test]
\starttextbackground[testframe]
...
\stoptextbackground
\stopstreamlayer
That's exactly what I need! Based on your example I kept
no errors with latest luatex and context beta
LowerLimitGapMin: 2.0pt
UpperLimitGapMin: 1.3pt
Thanks! Sorry for the noise...
Oliver
___
If your question is of interest to others as well, please add an entry to
---
\usetypescript[cambria]
\setupbodyfont[cambria]
\def\defaultrulethickness{\the\fontdimen8\textfont3\relax}
\starttext
\the\defaultrulethickness
\stoptext
---
which used to work in the old MkII days.
That is with the first two lines commented out :-)
I was finally
Dear list,
with LuaTeX beta-0.40.5-2009061123 and ConTeXt 2009.06.13 13:37 the following
throws an error:
---
\starttext
LowerLimitGapMin: \the\Umathlimitbelowvgap\displaystyle
UpperLimitGapMin: \the\Umathlimitabovevgap\displaystyle
\stoptext
---
Unfortunately I can't update at the moment.
Why not just
\definedfont[TitleFont][Serif sa 3]
and
{\TitleFont
\startbuffer[test]
{\TitleFont Lorem ipsum dolor sit amet, consectetur, sadipisci\unknown\par}
\input zapf
\stopbuffer
You're right, that's a good way to go! I now have:
---
\definefont
[TopicFont]
\usemodule[streams]
\definestreamlayer[test][method=overlay]
\setupbackgrounds[page][background=test]
\starttext
\startstreamlayer[test]
\startcolumns
\input knuth
\stopcolumns
\stopstreamlayer
\setlayer[test][x=5cm,y=10cm]{\placestreamlayer[test]}
\stoptext
Many thanks!
Dear all,
I'm wondering how I can get different margins between the contents of a framed
box and its left, right, top or bottom border. Somehow offset affects all
margins simultaneously ...
Best wishes,
Oliver
___
Dear all,
how can I access font parameters (e.g. the thickness of the fraction rule) of
an OpenType font in MkIV? Taco once gave me the solution:
---
\usetypescript[cambria]
\setupbodyfont[cambria]
\def\defaultrulethickness{\the\fontdimen8\textfont3\relax}
\starttext
---
\usetypescript[cambria]
\setupbodyfont[cambria]
\def\defaultrulethickness{\the\fontdimen8\textfont3\relax}
\starttext
\the\defaultrulethickness
\stoptext
---
which used to work in the old MkII days.
That is with the first two lines commented out :-)
MkIV only:
- loffset
- roffset
- toffset
- boffset
Wonderful!
Many thanks,
Oliver
___
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : ntg-context@ntg.nl /
Hi everyone,
slowly getting to grips with layer etc. However, some vertical space at the top
of my framed layer appears whenever the first element is a heading:
---
\definelayer
[text]
[width=\paperwidth,
height=\paperheight]
\setupbackgrounds
[page]
[background=text]
slowly getting to grips with layer etc. However, some vertical space at the
top of my framed layer appears whenever the first element is a heading:
you can find in the details manual better ways to set heading texts with a
layer
Well, actually I don't want to get a fancy heading using
Dear all,
how can I get columns within a layer? I tried
---
\setupbackgrounds
[page]
[background=text]
\definelayer
[text]
[width=\paperwidth,
height=\paperheight]
\startbuffer[test]
\startcolumns[n=2]
\input zapf
\stopcolumns
\stopbuffer
\starttext
Hi Mojca,
Also, is there a way to directly get the glyph outlines of, say,
$\bigotimes$ in MetaPost code and use it to derive some length unit from it?
Yes, but this only works for Type1 fonts, not for OpenType.
The example below is a literal copy from metapost manual (created by Taco).
I know there used to be a TeX - PS - pstoedit - MetaPost workflow. Does
this still work with MkIV?
If you manage to extend dvips to handle OpenType fonts then maybe ...
So does this mean that outline fonts in MetaPost are currently dead with MkIV?
Oliver
Hi,
ConTeXt already passes quite a few length parameters on to embedded
MetaPost code ... BodyFontSize, CurrentWidth etc.
Would it be possible to add some more font/math related parameters to
the default definitions? I'm thinking of exposing math OpenType
parameters like
AxisHeight
Hi there,
Reading the wiki I saw that
\index{keyword}keyword
should be used rather than
keyword\index{keyword}.
How should I proceed for names? For example
\defineregister[person][people]
Albert \person{Einstein, Albert}Einstein
vs.
\index{Einstein, Albert}Albert Einstein
What happens
Dear all,
how can I check whether a macro I defined is actually expanded into
what I intended? For example, if I define
\define[2]\Test{#2, {\it #1}}
is there a (Lua?) function like
check(\Test{Hello}{world}, string)
that would return true for string = world, {\it Hello} and false
how can I check whether a macro I defined is actually expanded into
what I intended? For example, if I define
\define[2]\Test{#2, {\it #1}}
is there a (Lua?) function like
check(\Test{Hello}{world}, string)
that would return true for string = world, {\it Hello} and false
otherwise? If the
I seem to have spoken too soon. The very next document I prepared
had the same boxes-rather-than-letters problem.
That said, I cleared the font caches again and, after restarting,
the document looked correct. Perhaps this is a coincidence. Or
perhaps there is something amiss with the way
My impression from reading installation directions for minimals is
that when you open a shell, and if you have your .bash_profile
configured, that setuptex will be sourced. That must set some sort
of path while the current shell is active? Will that interfere with
needing to suddenly latex
I'm sure that hartmut has done a presentation sometimes ago f, could
be
http://www.matexhu.org/eurotex2006/lectures/pdftex/hartmut-talk.pdf
Wonderful! This is exactly the sort of thing I was looking for ... is
there more material similar in spirit? Hartmut? ;-)
Oliver
Don't forget about pdftk vim plugin, otherwise you'll have to count
byte offsets on your fingers, or even better use qdf form with qpdf.
I've just had a brief look at qpdf and this seems incredible! This
might just be the tool I had in mind ... now I'll have to check out
what qdf can do for
Speaking about tools: Acrobat Pro (and some plugins to it) can do a
lot.
But all commercial, aren't they?
With podofobrowser those in the know can do a lot.
Will install ;-)
And I'm
shamelessly plugging my talk at EuroTeX 2009:
http://www.oneiros.de/tex/papers/eurotex2009-pdflibs.pdf
I've just had a brief look at qpdf and this seems incredible! This
might
just be the tool I had in mind ... now I'll have to check out what
qdf can
do for me ...
warning: uncompress pdf can frozen your console and burn you CPU..
Good to know ... actually I wanted to peak into a
Dear list,
I'd like to perform some basic PDF editing by hand ... can someone
point me to a good source of introductory material to get me started?
For example, I'd like to remove a text stamp from a given file but
also learn something about PDF itself along the way ... if there's
some
Hi Luigi,
pdf spec.
www.adobe.com/devnet/acrobat/pdfs/PDF32000_2008.pdf
xpdf sources
That sounds like a definite reference ... probably more than I can
digest for a start :-(
Perhaps there's a simple, example-driven guide for dummies somewhere?
Like writing a simple PDF document with
2. Where is OSFONTDIR set on mkiv? I specifically do NOT want my
system fonts used by ConTeXt; everything I want to use with TeX is
in one of my texmf trees. How can I prevent mkiv from taking the
system paths into account?
indeed, putting them in the tree is more robust (and controllable)
1. The symbols for number sets in Cambria Math aren't taken from
the double-struck variant.
Hans, please apply the following patch to math-def.mkiv
diff --git a/math-def.mkiv b/math-def.mkiv
index 31db66e..30beb5c 100644
--- a/math-def.mkiv
+++ b/math-def.mkiv
@@ -97,12 +97,12 @@
I'm already having problems with the following minimal test:
---
\definedescription[test]
\starttext
\test{Hello} world!
\stoptext
---
TeX complains that the file ended while it was scanning \dodowithpar.
For TeX this is probably not surprising, and a new line before
\stoptext
Hello,
I can't get the 'align' parameter to have any effect on label text
in definitions. Here is a simple test case:
\setuplayout[backspace=40mm]
\definedescription
[test]
[location=inleft,
width=25mm,
align=left,
margin=standard]
\starttext
\test{Hello} World! \par
Dear list,
the following are probably bugs in the new math engine as of
yesterday's beta (2009.05.14 16:44):
1. The symbols for number sets in Cambria Math aren't taken from the
double-struck variant.
---
\usetypescript[cambria]
\setupbodyfont[cambria]
\starttext
Hi Cecil,
I am working with a flowchart. I would like to have the background of
the flowchart, different from the background the flowchart is on. I do
not know much about color combinations. (Just enough to know what I
tried were not good choices.) Is there a site with good pointers about
color
I'd like to insert a little MetaPost square into the running text and
properly align it vertically. So I tried:
---
\startuseMPgraphic{square}
draw unitsquare scaled StrutHeight;
\stopuseMPgraphic
\starttext
I want a square \raisebox{-\strutdepth}{\useMPgraphic{square}} in my
Am 13.11.2008 um 18:14 schrieb Wolfgang Schuster:
Am 13.11.2008 um 17:18 schrieb Oliver Buerschaper:
Hello all,
I'd like to insert a little MetaPost square into the running text and
properly align it vertically. So I tried:
---
\startuseMPgraphic{square}
draw unitsquare scaled
Hello all,
I'd like to insert a little MetaPost square into the running text and
properly align it vertically. So I tried:
---
\startuseMPgraphic{square}
draw unitsquare scaled StrutHeight;
\stopuseMPgraphic
\starttext
I want a square \raisebox{-\strutdepth}{\useMPgraphic{square}} in
If you are allowed to make some minor adjustments you may probably
even leave out most of the \cdot commands, which will turn the formula
even sleeker ...
Just my two cents,
Oliver
\starttext
\startformula
\frac{g_a}{\theta} =
\startcases[left={\left[},right={\right]}]
\NC
What's the correct way of piping this to MetaFun? Putting
DefaultRuleThickness := \defaultrulethickness;
into each \startuseMPgraphic{} block works, but how can I define
this globally? Moving it into \startMPinclusions creates a scope
problem … see also the other thread about BodyFontSize
Sorry I missed this thread earlier. The default rule thickness in
is the eight font parameter of the fonts in math family 3. A bare
context file with the standard 12pt fonts gives the value 0.47998pt.
You can get the value via :
\edef\defautlrulethickness{\the\fontdimen8\textfont3}
Dear wizards of ConTeXt,
I'm wondering why ConTeXt doesn't seem to know about BodyFontSize in
the MPinclusions block … try:
---
\startMPinclusions
DefaultRuleThickness := 0.47998pt*BodyFontSize/12pt;
pickup pencircle scaled DefaultRuleThickness;
defaultpen := savepen;
OK. However, this doesn't seem to scale properly within the same font
… try the following:
---
\edef\defaultrulethickness{\the\fontdimen8\textfont3}
That is because of the \edef. Changing to a plain \def should help:
\def\defaultrulethickness{\the\fontdimen8\textfont3\relax}
Yep,
The rule is between 0.4pt and 0.5pt
\starttext
\dontleavehmode
\scale[factor=200]{$1 \over 2$}
\scale[factor=200]{$1 \above .47pt 2$}
\stoptext
Lovely! This applies to ConTeXt's default font size of 12pt, doesn't
it? Hence we would have the following linear relation if the thickness
is
Dear ConTeXters,
does someone know how to determine the current default_rule_thickness
ConTeXt uses in math mode?
Cheerio,
Oliver
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