betex -etex block parsing bug

betex -etex block parsing bug

[Willi Egger]

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Hi,

It seems that there is a problem with parsing betex - etex blocks in the 
following situation:
I can not say with which version this has been introduced. (I messed up 
my old TeX, so I have only new ones)
I tested this with the version of 19-12-2005 an 30-11-2005.

\setMPtext{1}{CENTER}
 
\startuseMPgraphic{TEST}
    picture Text;
    Text := \MPbetex{1};
    draw Text;
\stopuseMPgraphic

the betex-etex block will look like 'tex CENTERetex' of course the etex 
should be separated by a space.
For testing I attach the minimal file.

Willi


[-- Attachment #2: test.tex --]
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% TEST betex etex block: BUG parsing ...
% Context file
% filename test.tex
% Willi Egger
% 20-12-2005

\setupoutput[pdftex]
\usemodule[txt]

\setMPtext{1}{CENTER}  % remove the space before the right brace, erase the temporary files
												%	then compile and the run will fale!

\startuseMPgraphic{TEST}
	picture Text;
	Text := \MPbetex{1};
	draw Text ;
\stopuseMPgraphic


\starttext
	\startTEXpage
		\useMPgraphic{TEST}
	\stopTEXpage
\stoptext

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Re: betex -etex block parsing bug

[Hans Hagen]

Willi Egger wrote:

> Hi,
>
> It seems that there is a problem with parsing betex - etex blocks in 
> the following situation:
> I can not say with which version this has been introduced. (I messed 
> up my old TeX, so I have only new ones)
> I tested this with the version of 19-12-2005 an 30-11-2005.
>
> \setMPtext{1}{CENTER}
>
> \startuseMPgraphic{TEST}
>    picture Text;
>    Text := \MPbetex{1};
>    draw Text;
> \stopuseMPgraphic
>
> the betex-etex block will look like 'tex CENTERetex' of course the 
> etex should be separated by a space.
> For testing I attach the minimal file.


this was the old code:

% \def\MPtext       #1{\getvalue{\@@MPT#1}}
% \def\MPstring    #1{"\getvalue{\@@MPT#1}"}
% \def\MPbetex #1{btex \getvalue{\@@MPT#1} etex}

but due to some reported problems with undefined texts, it became

\def\MPtext       #1{\executeifdefined{\@@MPT#1}\empty}
\def\MPstring    #1{"\executeifdefined{\@@MPT#1}\empty"}
\def\MPbetex #1{btex \executeifdefined{\@@MPT#1}\empty etex}

so, let's add a space:

\def\MPbetex #1{btex \executeifdefined{\@@MPT#1}\empty\space etex}

(interesting is that it runs ok here -)

Hans

Re: betex -etex block parsing bug

[Willi Egger]

Hi Hans,

thanks for your immediate reply. Indeed it is strange that it runs ok in 
your environment.
But where to put this altered definition?

Cheers
Willi

Hans Hagen wrote:

> Willi Egger wrote:
>
>> Hi,
>>
>> It seems that there is a problem with parsing betex - etex blocks in 
>> the following situation:
>> I can not say with which version this has been introduced. (I messed 
>> up my old TeX, so I have only new ones)
>> I tested this with the version of 19-12-2005 an 30-11-2005.
>>
>> \setMPtext{1}{CENTER}
>>
>> \startuseMPgraphic{TEST}
>>    picture Text;
>>    Text := \MPbetex{1};
>>    draw Text;
>> \stopuseMPgraphic
>>
>> the betex-etex block will look like 'tex CENTERetex' of course the 
>> etex should be separated by a space.
>> For testing I attach the minimal file.
>
>
>
> this was the old code:
>
> % \def\MPtext       #1{\getvalue{\@@MPT#1}}
> % \def\MPstring    #1{"\getvalue{\@@MPT#1}"}
> % \def\MPbetex #1{btex \getvalue{\@@MPT#1} etex}
>
> but due to some reported problems with undefined texts, it became
>
> \def\MPtext       #1{\executeifdefined{\@@MPT#1}\empty}
> \def\MPstring    #1{"\executeifdefined{\@@MPT#1}\empty"}
> \def\MPbetex #1{btex \executeifdefined{\@@MPT#1}\empty etex}
>
> so, let's add a space:
>
> \def\MPbetex #1{btex \executeifdefined{\@@MPT#1}\empty\space etex}
>
> (interesting is that it runs ok here -)
>
> Hans
> _______________________________________________
> ntg-context mailing list
> ntg-context@ntg.nl
> http://www.ntg.nl/mailman/listinfo/ntg-context

Re: betex -etex block parsing bug

[Hans Hagen]

Willi Egger wrote:

> Hi Hans,
>
> thanks for your immediate reply. Indeed it is strange that it runs ok 
> in your environment.
> But where to put this altered definition?

cont-new.tex or so

(it runs ok because this btex/etex stuff is also parsed and cleaned up 
by texexec)

Hans

Re: betex -etex block parsing bug

[Willi Egger]

Hans bedankt!

Willi

Hans Hagen wrote:

> Willi Egger wrote:
>
>> Hi Hans,
>>
>> thanks for your immediate reply. Indeed it is strange that it runs ok 
>> in your environment.
>> But where to put this altered definition?
>
>
> cont-new.tex or so
>
> (it runs ok because this btex/etex stuff is also parsed and cleaned up 
> by texexec)
>
> Hans
> _______________________________________________
> ntg-context mailing list
> ntg-context@ntg.nl
> http://www.ntg.nl/mailman/listinfo/ntg-context