metaobj and luatex 0.42.0

metaobj and luatex 0.42.0

[Matthew Claus]

Hello everyone,

First, thanks for making this list such a great resource.

I've installed a fresh minimals on windows using first-setup.bat. This
seems to have installed luatex 0.40.6 which led to errors making the
formats (message indicated at least 0.42 was needed). I think the
presence of the older luatex version for windows was recently noted on
another thread.

So, I installed 0.42.0 and remade the formats.

This minimal example works with "texexec example.tex" but fails with "context
example.tex".

\startMPinclusions 
input metaobj; 
\stopMPinclusions

\starttext 
\startMPpage 
newBox.a(\sometxt{hello world}); 
a.c = origin;
drawObj(a);

\stopMPpage 
\stoptext

Is this expected to work (I realize the 0.42.0 is very new)

Am I doing something wrong?

Thanks very much for any assistance, 
Matt


C:\wk\tex>context example.tex MTXrun | run 1: luatex
--fmt="C:/wk/cm/context/tex/texmf-cache/luatex-cache/cont
ext/e8705fc03b81c76af2e2d42634ded96b/formats/cont-en"
--lua="C:/wk/cm/context/te
x/texmf-cache/luatex-cache/context/e8705fc03b81c76af2e2d42634ded96b/formats/cont
-en.lui" --backend=pdf "./example.tex" This is LuaTeX, Version
beta-0.42.0-2009071712 \write18 enabled.  (example.tex

ConTeXt ver: 2009.07.23 20:11 MKIV fmt: 2009.8.6 int: english/english

system : cont-new loaded
(C:/wk/cm/context/tex/texmf-context/tex/context/base/cont-new.tex
systems : beware: some patches loaded from cont-new.tex
(C:/wk/cm/context/tex/texmf-context/tex/context/base/cont-new.mkiv))
system : cont-fil loaded
(C:/wk/cm/context/tex/texmf-context/tex/context/base/cont-fil.tex
loading : ConTeXt File Synonyms ) system : cont-sys.rme loaded
(C:/wk/cm/context/tex/texmf-context/tex/context/user/cont-sys.rme
(C:/wk/cm/cont ext/tex/texmf-context/tex/context/base/type-tmf.tex
(C:/wk/cm/context/tex/texmf- context/tex/context/base/type-tmf.mkiv))
(C:/wk/cm/context/tex/texmf-context/tex /context/base/type-siz.tex
(C:/wk/cm/context/tex/texmf-context/tex/context/base/ type-siz.mkiv))
(C:/wk/cm/context/tex/texmf-context/tex/context/base/type-otf.te x
(C:/wk/cm/context/tex/texmf-context/tex/context/base/type-otf.mkiv)))
system : example.top loaded (example.top) fonts : preloading latin
modern fonts bodyfont : 12pt rm is loaded language : language en is
active systems : begin file example at line 5 mplib : initializing
instance 'metafun' using format 'metafun' mplib : loading 'metafun.mp'
from 'C:/wk/cm/context/tex/texmf-cache/lu
atex-cache/context/e8705fc03b81c76af2e2d42634ded96b/formats/cont-en-metafun.mem'

mplib | mp terminal:
(C:/wk/cm/context/tex/texmf/metapost/metaobj/metaobj.mp) !
Inconsistent equation (off by 1).  <to be read again> ;
assignObj->(SUFFIX0)=incr(nObj_);
iname_[(SUFFIX0)]=str(SUFFIX0);addclass_((S...

newBox->...2))((TEXT4));assignObj((SUFFIX2),"Box")
;StandardInterface;Standar...  <to be read again> ; <*> ...j.mp;
newBox.a(textext.drt("hello world")); a.c = origin; drawObj(a); ; !
Redundant equation.  <to be read again> ;
assignObj->...bj_);iname_[(SUFFIX0)]=str(SUFFIX0);
addclass_((SUFFIX0),(EXPR1...

...



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___________________________________________________________________________________

Re: metaobj and luatex 0.42.0

[Taco Hoekwater]

Matthew Claus wrote:
> This minimal example works with "texexec example.tex" but fails with "context
> example.tex".
> 
> \startMPinclusions 
> input metaobj; 
> \stopMPinclusions
> 
> \starttext 
> \startMPpage 
> newBox.a(\sometxt{hello world}); 
> a.c = origin;
> drawObj(a);
> 
> \stopMPpage 
> \stoptext
> 
> Is this expected to work (I realize the 0.42.0 is very new)

I am not surprised it fails. Most metapost code in mkiv is run at
least twice for some reason, and so equations tend to fail. You could
try with

   \startMPpage
   newBox.a(\sometxt{hello world});
   a.c := origin;
   drawObj(a);
   \stopMPpage


but even then it depends on what newBox does internally.

Best wishes,
Taco
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___________________________________________________________________________________

Re: metaobj and luatex 0.42.0

[Hans Hagen]

Taco Hoekwater wrote:
> Matthew Claus wrote:
>> This minimal example works with "texexec example.tex" but fails with 
>> "context
>> example.tex".
>>
>> \startMPinclusions input metaobj; \stopMPinclusions
>>
>> \starttext \startMPpage newBox.a(\sometxt{hello world}); a.c = origin;
>> drawObj(a);
>>
>> \stopMPpage \stoptext
>>
>> Is this expected to work (I realize the 0.42.0 is very new)
> 
> I am not surprised it fails. Most metapost code in mkiv is run at
> least twice for some reason, and so equations tend to fail. You could
> try with
> 
>   \startMPpage
>   newBox.a(\sometxt{hello world});
>   a.c := origin;
>   drawObj(a);
>   \stopMPpage
> 
> 
> but even then it depends on what newBox does internally.

in general one needs to keep in mind that we're in one run, so even in 
the case of 'single runs' things can bleed from one to the other 
graphic; one should set up graphics as independent as possible

Hans


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               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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___________________________________________________________________________________

Re: metaobj and luatex 0.42.0

[Matthijs Kooijman]

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Hi Matthew,

I've been playing with metaobj and luatex 0.43 for a bit, and faced similar
problems. Lots of stuff about "redundant" equations and other stuff I didn't
understand.

However, I've found that cleaning up your objects when you're done pretty much
solves all my problems. For example, just add a clearObj line to your code
makes it work for me:

\startMPinclusions 
input metaobj; 
\stopMPinclusions

\starttext 
\startMPpage 
newBox.a(\sometxt{hello world}); 
a.c = origin;
drawObj(a);
clearObj a;

\stopMPpage 
\stoptext

I'm not completely sure why this is clearObj a (and not clearObj(a), which
seems to be more logical considering drawObj also takes parentheses), but
that's probably something of the wonderful world of macro "programming".

Hope this helps,

Matthijs

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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: metaobj and luatex 0.42.0

[Matthijs Kooijman]

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Hi Matthew,

> However, I've found that cleaning up your objects when you're done pretty much
> solves all my problems. For example, just add a clearObj line to your code
> makes it work for me:
I've found that using "save" to "declare" the values as local also works. For
example:

> \startMPinclusions 
> input metaobj; 
> \stopMPinclusions
> 
> \starttext 
> \startMPpage 
save a;
> newBox.a(\sometxt{hello world}); 
> a.c = origin;
> drawObj(a);
> \stopMPpage 
> \stoptext

Perhaps this is even slightly more elegant.

Gr.

Matthijs

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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: metaobj and luatex 0.42.0

[Matthew Claus]

Thank you Taco and Hans for the very quick explanation.

Regards,
Matt

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: metaobj and luatex 0.42.0

[Matt Claus]

Hi Matthijs,

Thank you for your two follow ups to my original question. Both of the 
techniques you suggested also work for me, so I'm able to continue now.

Cheers,
Matt


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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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