[NTG-pdftex] bug in XObject

Heiko Oberdiek oberdiek at uni-freiburg.de
Fri Jun 3 12:28:24 CEST 2005


On Fri, Jun 03, 2005 at 10:35:16AM +0200, Hans Hagen wrote:

> Vit Zyka wrote:

> >\pdfxform attr{/Matrix [1.2 0.25 0.3 1 0 0]} 0

> >/Matrix [1.2 0.25 0.3 1 0 0]
> >/Matrix [1 0 0 1 0 0]

> >See the double /Matrix entry. That results in ignoring transformation by 
> >Acrobat (R) v.6 and 7. (v.4 and v.5 is OK). I believe that it is 
> >(exceptionally) bug in pdftex not in Acrobat ;)
> 
> pdftex is (and will) not parsing the content of attr, so the duplicate 

Looking for the string "/Matrix" without full parsing could be done.

> entry si a feature; conforming the specs acrobat should look at the first 
> entry and if they broke that ...

Have I missed something? When did they change this?

PDF spec. 1.6 says in 3.2.6 "Dictionary Objects":

| Note: No two entries in the same dictionary should have the same key. If a
| key does appear more than once, its value is undefined.

Yours sincerely
  Heiko <oberdiek at uni-freiburg.de>
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