[NTG-context] xmlrefatt

[dr. Hans van der Meer]

There is a slight restriction on \xmlrefatt that makes its use problematic, 
because it does not differentiate between an absent attribute and an attribute 
consisting of an empty string.
The use for \xmlrefatt I had in mind was (a) do nothing if the attribute is 
absent, and (b) reset some value to its default value when the attribute is 
present but an empty string.

Is it an option that its implementation is changed? A boolean return value will 
be fine, because false then can signify the attribute’s absence and true its 
presence. In the latter case it is safe to retrieve the attribute which then 
might be an empty string.

Summarizing: the fact that \xmlrefatt tries to do two different things at the 
same time (signalling presence/absence) and returning an attribute, in a 
certain sense cripples its use.

dr. Hans van der Meer


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Re: [NTG-context] Saving Metafun Graphic for use outside ConTeXt

[dr. Hans van der Meer]

Maybe this script could help a bit too. 

mpone
Description: Binary data
Use with following code scheme in ConTeXt:\starttext\startMPpage% Your Metapost/metafun code here\stopMPpage\stoptextIt will produce a standalone image in a pdf.
dr. Hans van der Meer

On 5 Apr 2018, at 18:45, Keith McKay <mckaymeis...@gmail.com> wrote:
  


  
  Thanks Nicola and Alan. I'll look into that.Best WishesKeith


On 05/04/2018 17:42, Nicola wrote:

On 05/04/2018
  18:24, Alan Braslau wrote:
  
  On Thu, 5
Apr 2018 15:28:34 +0100

Keith McKay <mckaymeis...@gmail.com> wrote:


I use a
  mac-mini and it seems that mupdf, of which mutools is part
  
  off, does not have a macOS version, or I would have to build
  from
  
  source. However it looks like I can use Inkscape with a wee
  bit
  
  thought to do pretty much the same.
  


mupdf is available on MacPorts...

  
  
  ...also in Homebrew (mupdf formula, or mupdf-tools if you don't
  need
  
  the viewer).
  
  
  Nicola
  
  
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[NTG-context] entity substitution

[dr . Hans van der Meer]

Does ConText always process DOCTYPE definitions? Because in the next example 
the defined XXX entity is substituted in one case but not in the other.

In a directory I have the following files:

doctype.tex =
\startxmlsetups demo:setups
\xmlsetsetup{#1}{root}{demo:*}
\stopxmlsetups
\xmlregistersetup{demo}{demo:setups}
\startxmlsetups demo:root
\xmlflush{#1}
\stopxmlsetups
\startbuffer[demo]

]>

See XXX; for .

\stopbuffer
\starttext
\xmlprocessbuffer{demo}{demo}{}
\stoptext

Produces as output a subtituted entity



But

doctype-public.tex = 
\startxmlsetups demo:setups
\xmlsetsetup{#1}{root}{demo:*}
\stopxmlsetups
\xmlregistersetup{demo}{demo:setups}
\startxmlsetups demo:root
\xmlflush{#1}
\stopxmlsetups
\startbuffer[demo]


See XXX; for .

\stopbuffer
\starttext
\xmlprocessbuffer{demo}{demo}{}
\stoptext

namen.dtd = 


The last two do not output a substituted entity. Why is this not working? What 
I am doing wrong?



dr. Hans van der Meer


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[NTG-context] define xml entity

[dr. Hans van der Meer]

How do I define an xml entity like ? 
Is there an \xml-operation for defining an entity? 
Such that I can say \xml{ABC}{an alphabet} for using  so that it produces 
“an alphabet”, for example.

dr. Hans van der Meer


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[NTG-context] text on every page howto

[dr. Hans van der Meer]

I would like to put a (rotated) text on every page in the margin.
Please, how do I accomplish this?

Hans van der Meer


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[NTG-context] add to \setbuffer

[dr. Hans van der Meer]

With \setbuffer[ABUFFER] .. \endbuffer I can program a macro to put something 
in this buffer.
But is it possible to add something at the end of this buffer at a later moment?

Hans van der Meer


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[NTG-context] \xmlload not understood

[dr. Hans van der Meer]

I did load an xml data file containing
  ...
with:
  \xmlload{Data}{data.xml}

Then correctly find the number of data from \xmlcount{Data}{subnode}
however \xmlflush{Data} is not giving me the processed nodes from
  \startxmlsetups do:subnode
doing something with xmlflysh{#1}
  \stopxmlsetups
but only the raw input ...

Do I err in my understanding? And if so, how to do it better?

Below a minimal example and its output.



\startxmlsetups load:setups
  \xmlsetsetup{#1}{root|nodes|subnode}{load:*}
\stopxmlsetups
\xmlregistersetup{load:setups}

\startxmlsetups load:root
  \xmlloadbuffer{Data}{dataset}
  Number of  = \xmlcount{Data}{subnode}\blank
  \xmlflush{Data}
\stopxmlsetups

\startxmlsetups load:subnode
  Content  \xmlflush{#1}\par
\stopxmlsetups

\startbuffer[test]


\stopbuffer

\startbuffer[dataset]


  this is subnode-1
  this is subnode-2
  this is subnode-3

\stopbuffer

\starttext
\xmlprocessbuffer{root}{test}{}
\hairline
\stoptext

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[NTG-context] \xmlloadfile undefined

[dr. Hans van der Meer]

In the xml-mkiv.pdf manual is written on page 18:

> \xmlloadfile {...} {...} {...}
> 
> loads the file FILE and registers it under NAME and applies either given or 
> standard XMLSETUP (alias: \xmlload)
> 

However, \xmlloadfile gives an undefined macro TeX-error, allthough the given 
alias \xmlload is present (useed beta of 2017-04-16).

Shouldn't macro \xmlloadfile be added? Besides \xmlloadbuffer and \xmloaddata 
that would appeal to my preference for systematic naming.


By the way. In this document all descriptions "\macro{}{}{}" refer to arguments 
like FILE, NAME etc. but these are absent from the API as shown. I think 
presented as \xmlloadfile{NAME}{FILE}{XMLSETUP} for example, would be more 
informative (at least I guess I have the order right). Any way, I get confused 
with some of the other APIs and would be pleased if a newer version of the 
manual has them. 

Hans van der Meer

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Re: [NTG-context] smallcaps

[dr. Hans van der Meer]

> On 29 Jun 2016, at 10:05, dr. Hans van der Meer <havdm...@ziggo.nl> wrote:
> 
> I do not understand the behaviour of the \sc macro. I thought smallcaps would 
> turn out to be smaller than capitals. But I see no difference between them 
> except a subtle difference in letterspacing. Am I doing something wrong here?
> 
> Hans van der Meer
> 

The above issue being solved, I guess there is something else in my setup not 
being as it should be.
Because the code:

\starttext
\setupbodyfont[lucidaot]
{\sc abc}
\stoptext

Does give me abc in smallcaps, but placing the \setupbodyfont before the 
\starttext surprisingly does not.

\setupbodyfont[lucidaot]
\starttext
{\sc abc}
\stoptext

Changing the lucidaot call for cambria or lmodern gives the expected coorect 
behaviour.
So I guess there is something amiss with how I did setup the lucida font in my 
system.
I bought the lucida opentype font and installed my TeX trees as follows. The 
split between the ConTeXt directory and the one for my local files facilitates 
downloading new beta versions.

~home\TeX\texmf\
  fonts
opentype
  bh
lucidaot
  LucidaBlackletterOT.otf .. LucidaSansTypewriterOT.otf
  tex
context
  user (my own modules)

~home\Applications\TeX-programs\
context
  tex
link to the above texmf
further as downloaded from the beta

Strange thing furthermore is that changing the name of the lucidaot-directory 
in the texmf-tree does not seem to make any difference, not in any case when I 
execute "mtxrun --script font --reload --force" and afterwards "mtxrun --script 
context --make".

So I guess there are some things I did not right. Can that be spotted from the 
information given here?

Hans van der Meer


 

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[NTG-context] smallcaps

[dr. Hans van der Meer]

I do not understand the behaviour of the \sc macro. I thought smallcaps would 
turn out to be smaller than capitals. But I see no difference between them 
except a subtle difference in letterspacing. Am I doing something wrong here?

Hans van der Meer

Minimal example and output:

\setuppapersize[A5][A5]
\starttext
\setupbodyfont[lmodern]
lmodern: uppercase  smallcaps\blank
\setupbodyfont[cambria]
cambria: uppercase  smallcaps\blank
\LuaTeX-version=0.\the\luatexversion\crlf
\ConTeXt-version=\contextversion\crlf
\stoptext




smallcaps.pdf
Description: Adobe PDF document



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[NTG-context] xml expression error

[dr. Hans van der Meer]

Why is there anexpression error here? I would expect that the expression 
number(-1101) evaluates to a negative number taking part in the comparsion. 
It looks as if the minus sign is not seen as an unary minus, while -1101 
should have be evaluated by Lua's tonumber(-1101).

relevant code snippet is:
\xmlfilter{#1}{lpath[number(@date) <= number(-1101)]/command(...)

xml > lpath > error in expression: number(@date) <= number(-1101) => 
expr.number((ll.at and ll.at['date'])) <= 
expr.number(expr.child(ll,'-')1101)

Changing number(-1101) to -1101 does not make a difference. 
The @date attribute has no problem with a negative value.

Hans van der Meer

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[NTG-context] typebuffer different from typefile

[dr. Hans van der Meer]

Why is there a difference in syntax between typing buffers and typing files?
For files enclosure in {} for buffers in [], for files optional parameters, for 
buffers not.
Is it possible to make the syntax of these two the same, because their usage 
parallels each other?

Example code:

\startbuffer[test]
content of buffer
\stopbuffer
\starttext
\typebuffer[test]
\typefile[style=\ttx]{test.txt}
\stoptext

Hans van der Meer

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[NTG-context] MPinstance

[dr. Hans van der Meer]

I do not understand the info in the ConTeXt wiki on setupMPinstance.

The syntax is specified as \setupMPinstance[...][...,...=...,...0
[...] name
format metafun mpost
etc.

I read this as:
in the first argument one can specify a name presumably a name specified on 
\defineMPinstance.
in the second argument [format=metafun] specifies the format.
But then the example under Usage gives:
\setupMPinstance[metafun][...]
Why metafun in the first instead of the second argument as implied in the 
syntax description?
I get confused here.

Also in the description \startMPextensions and \startMPinitializations are 
mentioned, but their descriptions are missing from the list given in the page 
MetaPost in ConTeXt. How are these described and what is the specific purpose 
of \startMPextensions compared to \startMPinitializations? What is the 
recommended use for them?

Hans van der Meer

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[NTG-context] numbering problem

[dr. Hans van der Meer]

The following problem in the numbering of equations, figures, tables has arisen.

For the subdivison of the document is wanted the numbering scheme
chapter (numbered)
  section   (numbered)
subsection  (numbered}
  subsubsection (not numbered)
Doing this with \setuphead[subsubsection][number=no], because I find 3 levels 
of numbering enough.

However, the number=no on the last \setuphead has as sideeffect that the 
chapternumber is missing on equations, figures, tables. Thus for example 
instead of "table 1.4" I am seeing "Table 4".

How can I keep the numbering at 3 levels instead of 4 in still have tables 
inside subsubsections numbered as "Table 1.4"?

Hans van der Meer

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[NTG-context] doifnextcharelse

[dr. Hans van der Meer]

I would like to differentiate on the following character being one of  X or not 
X.
But cannot get it right in \doifnextcharelse.

For example 
\def\mynextchar{\doifnextcharelse{X}{\def\Next{Y}}{\def\Next{Z}}\Next} 
delivers: ZX ZQ
then input: \mynextchar X \mynextchar Q
I hoped for YX ZQ, but it looks as if X tested false against X.

How to?

Hans van der Meer

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[NTG-context] fontname

[dr. Hans van der Meer]

I want to display the name of the current (body)font.
\fontname{#1} should do the trick but what parameter to use?
\currentfont
\bodyfont
\currentbodyfont
are all wrong.

Eevn the book "fonts in context" didn't help me out.

What to use?

Hans van der Meer

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[NTG-context] font style query

[dr . Hans van der Meer]

Some fonts as for example Lucida have a calligraphic style called up with \cg.
If it is not present a default is taken.
However, I would like to take other action in that case, for example switching 
to another font.

Thus, how to test on the presence of that calligraphic style in the current 
font?

Hans van der Meer

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Re: [NTG-context] suddenly run error

[dr. Hans van der Meer]

Earlier I posted the following error:

A document that runs fine under
   ConTeXt  ver: 2015.10.09 21:28 MKIV beta  fmt: 2015.10.11  int: 
english/english
suddenly doesn't under
  ConTeXt  ver: 2015.12.22 10:50 MKIV beta  fmt: 2015.12.27  int: 
english/english
mtx-context | fatal error: no return code, message: luatex: execution 
interrupted

At first I thought this was due to a new version of ConTeXt. A mistake, it now 
seems. I encounter the same error in an earlier version. It seems therefore a 
problem already present in either LuaTeX or ConTeXt.

The error must be related to the placement of floats witness the following 
fact, typesetting the same document with only a difference in float-placement:

No error: \startplacetable[location=here,reference=tab:beaufort,title=Beaufort 
tabel]
Error: \startplacetable[location=page,reference=tab:beaufort,title=Beaufort 
tabel]

A further observation: the item placed is nearly filling the page. Making the 
item somewhat smaller avoids the error, even if its the only item on the page.

I did not succeed to compose a minimal example, in my experience the occurrence 
of the error seems too unpredictable. The actual project is far to complex and 
too big to be of use for debugging.

I sincerely hope someone can solve this. The error brings to mind a similar 
problem experienced years earlier. It then was a problem of a null object in 
the pdf-section, if my memory is correct and I think Taco has solved that.

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[NTG-context] suddenly run error

[dr. Hans van der Meer]

A document that runs fine under
   ConTeXt  ver: 2015.10.09 21:28 MKIV beta  fmt: 2015.10.11  int: 
english/english
suddenly doesn't under
  ConTeXt  ver: 2015.12.22 10:50 MKIV beta  fmt: 2015.12.27  int: 
english/english
mtx-context | fatal error: no return code, message: luatex: execution 
interrupted

Loaded this beta today.
The previous beta runs ok, the new beta gives the error. The pdf produced in 
the latter seems at fault.
Anyone knows how this error can occur?

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Re: [NTG-context] suddenly run error

[dr. Hans van der Meer]

A further observationthat makes things seem far worse: the error is dependent 
on the content!
The document in question has several chapters, each in a separate file. 
Dependent on the combination of files included, the error does or does not show 
up. Sofar I cannot find a pattern linked to the error. Making a minimal example 
proved impossible, alas.

Hans van der meer

> On 27 Dec 2015, at 13:19, dr. Hans van der Meer <havdm...@ziggo.nl> wrote:
> 
> A document that runs fine under
>ConTeXt  ver: 2015.10.09 21:28 MKIV beta  fmt: 2015.10.11  int: 
> english/english
> suddenly doesn't under
>   ConTeXt  ver: 2015.12.22 10:50 MKIV beta  fmt: 2015.12.27  int: 
> english/english
> mtx-context | fatal error: no return code, message: luatex: execution 
> interrupted
> 
> Loaded this beta today.
> The previous beta runs ok, the new beta gives the error. The pdf produced in 
> the latter seems at fault.
> Anyone knows how this error can occur?
> 
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[NTG-context] list with individual item indications

[dr. Hans van der Meer]

I want to typeset a series of items in the itemize-list structure. But not 
numbered 1. 2. etc, but each item a separate indication, in fact in this case 
years. In \startitemize \startitem .. \stopitem .. \stopitemize I am not able 
to realize this and the ConTeXt Wiki on these commands didn't help me further.
How to accomplish?

Hans van der Meer

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[NTG-context] footnote coloring

[dr. Hans van der Meer]

I want to color all elements of a footnote, but I cannot find how to do this.Minimal example:\def\rednumber#1{\color[red]{#1}}\starttext\setupfootnotes[textcolor=red,numbercommand=\rednumber,foregroundcolor=red]This text\footnote{the footnote} contains a footnote.\stoptextThe footnotenumber in the text is the only element that gets colored because of the [textcolor=red] parameter setting.In the command reference it is [numbercommand=\rednumber]. Shouldn't that have made the color of the footnotenumber below?Since \setupfootnotes inherits from setupframed I expected [foregroundcolor=red] to do the trick for the content of the footnote, but it doesn't.How to?Hans van der Meer

footnotecolor.pdf
Description: Adobe PDF document
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[NTG-context] framed broken?

[dr. Hans van der Meer]

I tried to reproduce a framed example from the context-reference:



Input taken from this example by copying the lines from the reference document:
\starttext
\framed
[width=.2\hsize,height=3cm]
{\cbox to 2.5cm{\hsize2.5cm just\\in the\\middle}}
\stoptext

result is wrong in comparison with the middle \cbox example. The text is not 
centered.
Is framed at fault here?

Hans van der Meer


framedlines.pdf
Description: Adobe PDF document



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[NTG-context] boxedcolumns ruins framed

[dr. Hans van der Meer]

In \boxedcolumns text a framed test gets extra (unwanted) depth (first example). This does not happen in \simplecolumns (second example). See the ABCD-boxes in the minimal example.Downloaded the latest beta:ConTeXt ver: 2015.08.24 10:53 MKIV beta fmt: 2015.8.24 int: english/english\starttext\startboxedcolumns[n=3]\framed{ABCD}\blank\input knuth\stopboxedcolumns\blank\startsimplecolumns[n=3]\framed{ABCD}\blank\input knuth\stopsimplecolumns\stoptext

boxedcolumnsframed.pdf
Description: Adobe PDF document
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[NTG-context] hyphenation exceptions?

[dr. Hans van der Meer]

Has something happened to hyphenation?

The following does not work
\language[nl]
\startexceptions[nl]
Am-ster-dam
\stopexceptions

Neither does \hyphenation{Am-ster-dam}

Only in the context-source Am\-ster\-dam is working.

How to load a series of hyphenation exceptions instead of explicitely spelling 
out the breakpoints in the source?

Hans van der Meer


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Re: [NTG-context] arranging pages

[dr. Hans van der Meer]

Neither of these suggestions makes any difference. Not the solution therefore.


Hans van der Meer




 On 24 May 2015, at 12:07, Otared Kavian ota...@gmail.com wrote:
 
 Hi,
 
 Maybe you need to say also:
 
   \setuppagenumbering[alternative={singlesided,doublesided}]
 
 or just
   \setuppagenumbering[alternative={singlesided}]
 
 Best regards: OK
 
 On 24 May 2015, at 11:24, Meer, H. van der h.vanderm...@uva.nl 
 mailto:h.vanderm...@uva.nl wrote:
 
 Trying to put 2 pages in A5 format besides one another on an A4 page like 
 this:
 
 --
 | |  |
 | |  |
 | |  |
 |1|  2   |
 | |  |
 | |  |
 --
 
 but using:
 
 \setuppapersize[A5][A4,landscape]
 \setuparranging[2UP]
 
 I get this instead:
 
 --  --
 | |  |  | |  |  
 | |  |  | |  |  
 | |  |  | |  |  
 | | 1|  |2|  |  
 | |  |  | |  |  
 | |  |  | |  |  
 | |  |  | |  |  
 --  --
 
 What I am doing wrong?
 
 Hans van der Meer
 
 
 
 
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[NTG-context] definetypeface usage

[dr. Hans van der Meer]

Trying to findout how ConTeXt's font mechanism works, I come to 
following question:

From the brochure Fonts in Context (mfonts.pdf) I have picked up the 
notion that exercising a call to \definetypeface gets fonts in working 
order (see the examples there on font specifiers funny and whow, 
for example, and the resulting typeface collection).
Also in file type-exa.tex there is a typescript [postscript] where 
\definetypeface is exercised, seemingly to bring a matched series of 
times, helvetica and courier into existence.
However, the usage of the postscript fonts via \setupbodyfont[pos] 
seems to be completely unconnected with this script (I traced the 
typescript checking). Neither can I find somany calls to 
\definetypeface (and its derivatives \dodefinetypeface and 
\dododefinetypeface); it seems they are barely used in the code.
So, the questions are:
- Does \setupbodyfont[pos] results in the scaled font set as given in 
type-exa?
- Or does \definetypeface belong to an alternative/obsolete font 
definition scheme, totally unrelated to the definitions called up in 
the scripts in type-pre.tex, type-syn.tex, and other friends?
- In preparing font scripts, can I therefore totally ignore 
\definetypeface or will that be disastrous for the result?

If somebody would be so kind to enlighten me...
Hans van der Meer
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[NTG-context] math-lbr

[dr. Hans van der Meer]

Hi Hans,
I get the impression that in math-lbr.tex the codes for 
blacktriangleleft and -right are interchanged. Having F0 where it 
should be F1 and vice versa. Imho it should be left = F0 and right = 
F1.

Hans van der Meer
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[NTG-context] correction

[dr. Hans van der Meer]

re: might be an error in ConTeXt file prop-mis.tex
I had some difficulty with typesetting backgrounds.
It seems there is an error in file prop-mis.tex (version 2004-06-21):
	token \popsplitnegativeproperty is never defined but 
\popsplitoverprintproperty is twice.
I think the second one should be \popsplitnegativeproperty, because 
then the sequence
	\startbackground
	some text
	\stopbackground
does typeset after regenerating the formats.

Hope this helps.
Hans van der Meer
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[NTG-context] typo in recent version

[dr. Hans van der Meer]

I found a typo in the recent version (16-06-2004) of ConTeXt.
In file type-buy.tex in line 143 one finds:
\definefontsynonym f[LucidaSans-DemiItalic] ...
The f before the [ is a spurious character and should be removed.
Hans van der Meer
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Re: [NTG-context] reference problem

[dr. Hans van der Meer]

On 20-jun-04, at 21:45, Hans Hagen Outside wrote:
dr. Hans van der Meer wrote:
In the ConTeXt manual (cont-eni.pdf) it says in the chapter on 
references by way of example:
can you try the version i uploaded yesterday?
(i introduced a feature and therefore bug but don't know yet why it 
fails on those cases)

I tried and now it works.
By the way, I found the typo in type-buy.tex (I just reported) has been 
corrected also. thanks.

Hans van der Meer
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Re: [NTG-context] typo in recent version

[dr. Hans van der Meer]

On 22-jun-04, at 11:05, Hans Hagen wrote:
dr. Hans van der Meer wrote:
I found a typo in the recent version (16-06-2004) of ConTeXt.
In file type-buy.tex in line 143 one finds:
\definefontsynonym f[LucidaSans-DemiItalic] ...
The f before the [ is a spurious character and should be removed.
it's even worse, since there are some out-of-typescript lines; i found 
out a few days ago so the latest version should be ok; i can send you 
the type-buy file if needed

Thanks for the prompt reply. In the mean time I got the version dated 
21 june. If that one is ok or if you are readying a newer version soon, 
then do not bother to send me an update. I am looking fairly regular 
for updates. Anyway, I managed today to typeset my lucida fonts.

Hans van der Meer
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[NTG-context] reference problem

[dr. Hans van der Meer]

In the ConTeXt manual (cont-eni.pdf) it says in the chapter on references by way of example:

In this chapter, we can safely use references, without the danger of clashing with references in other chapters. If we have a figure:

\placefigure[here][fig:worldmap]{A map of the \TeX\ world}{...}

In the chapter itself we can refer to this figure with:

\in {figure} [fig:worldmap]

However, if I use this scheme on the following input:

\placefigure[here][fig:exceptionhierarchy]{Sample~exception~hierarchy}%
{\externalfigure[ExceptionHierarchy][scale=800]}

By way of example, \in{figure}[fig:exceptionhierarchy] shows the
hierarchy for ...

The following error trace occurs (TeXShop):

floatblocks: 1 placed
! Undefined control sequence.
\doloop ...ndcsname \recurselevel \let \endofloop 
\dodoloop \dodoloop 1
\removeunwantedspaces ...kip \else \exitloop \fi }
\fi 
argument> ...\ignorespaces \removeunwantedspaces 
\rightofreference 
\doifelsenothing #1->\edef \!!stringa {#1
}\ifx \!!stringa \empty \expandafte...
argument> ...veunwantedspaces \rightofreference }
{\egroup \dosymbolreferenc...

\doifreferencefoundelse ...ce \ifreferencefound #2
\rightofreference 
...
l.121 ...mple, \in{figure}[fig:exceptionhierarchy]
shows the
? 

What I am doing wrong? Or has some change in macros taken place?
I am using  the following version:
ConTeXt  ver: 2004.6.14  fmt: 2004.6.15  int: english  mes: english

I would be happy if someone can provide the answer.

Hans van der Meer