[NTG-context] Issues with MetaPost boxes

Taco Hoekwater taco at elvenkind.com
Sun Aug 15 17:34:25 CEST 2010


On 08/14/2010 05:40 PM, taco wrote:
> Andreas Schneider wrote:
>> Since some weeks I have strange problems with MetaPost in MKIV (beta).
>> The
>> attached example should (and did in the past) output a central box
>> ("Fakt")
>> surrounded by five boxes named "Dimension". However some of them (in that
>> particular example one) is drawn wrong: the box is on the right spot, but
>> the label seems to be at 0,0. It seems to happen whenever the boxes are
>> drawn from within a loop - at least all of my problems with boxes show
>> similar symptoms and only occur within loops.
>>
>> Any ideas what goes wrong here?
>
> Probably a metapost bug, I'll check.

There were actually two metapost bugs from that single example.
Next week's luatex beta will have a fix for both.

Bug 1:

   show "45">"["; % 1.502 gives true, should be false

Bug 2:

   pair a[]b;
   a1b = (50,50);
   pair a[]c;
   show known a1b; % 1.502 gives false, should be true

Best wishes,
Taco


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