From: PELLOUIN Christophe <christophe.pellouin@wanadoo.fr>
To: Hans Hagen <pragma@wxs.nl>
Cc: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Problem with arguments in macro
Date: Mon, 21 Jan 2013 21:25:31 +0100 [thread overview]
Message-ID: <50FDA43B.4090906@wanadoo.fr> (raw)
In-Reply-To: <50FD9C1D.5030306@wxs.nl>
Le 21/01/2013 20:50, Hans Hagen a écrit :
> On 1/21/2013 8:47 PM, PELLOUIN Christophe wrote:
>> Le 21/01/2013 19:32, Hans Hagen a écrit :
>>> On 1/21/2013 7:26 PM, PELLOUIN Christophe wrote:
>>>> Hello,
>>>>
>>>> When writing a macro, I observed that some arguments are not
>>>> transmitted
>>>> correctly, particularly when the type is defined as "text".
>>>> Here is an example with the macro max defined in the file plain.mp
>>>> With this program:
>>>>
>>>> beginfig(1)
>>>>
>>>> show("first test");
>>>> show max (1,2,8,5,15,2,1,4);
>>>>
>>>> numeric u_;
>>>> v_=15;
>>>> show("second test");
>>>> show max (1,2,8,5,v_,2,1,4);
>>>>
>>>> numeric u_;
>>>> u_=15 % u_ variable is also defined in the macro max
>>>> show("third test");
>>>> show max (1,2,8,5,u_,2,1,4);
>>>>
>>>> endfig;
>>>> end
>>>>
>>>> The result is:
>>>>
>>>> This is MetaPost, version 1.504 (kpathsea version 6.0.1)
>>>> (mpost.mp (c:/texlive/2011/texmf-dist/metapost/base/plain.mp
>>>> Preloading the plain mem file, version 1.004)) (./bizzare.mp
>>>> >> "first test"
>>>> >> 15
>>>> >> "second test"
>>>> >> 15
>>>> >> "third test"
>>>> >> 8 [1] )
>>>> 1 output file written: bizzare.1
>>>> Transcript written on bizzare.log.
>>>>
>>>>
>>>>
>>>> The third result is different because the variable u_ is defined in
>>>> the
>>>> macro max of the file plain.mp
>>>
>>> I can protect all local plain variables if needed but I'll only do it
>>> if someone then tests all the plain macros.
>>
>> How can I protect a variable? I had the same bug in one of my macros and
>> I'd like to fix it.
>
> my_private_u
Ok. Thank you
>
> -----------------------------------------------------------------
> Hans Hagen | PRAGMA ADE
> Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
> tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
> | www.pragma-pod.nl
> -----------------------------------------------------------------
>
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prev parent reply other threads:[~2013-01-21 20:25 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-21 18:26 PELLOUIN Christophe
2013-01-21 18:32 ` Hans Hagen
2013-01-21 19:47 ` PELLOUIN Christophe
2013-01-21 19:50 ` Hans Hagen
2013-01-21 20:25 ` PELLOUIN Christophe [this message]
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