Hi all,

Here is my Christmas present to you: a bug report :-). When using
\pdfsetmatrix in plain luatex, the y-axis of annotations seems to be
inverted.

Consider the following example, which should write the word "Link" and
open the luatex homepage when a user clicks on it.
--
\hbox
  {\pdfsave%
   \pdfsetmatrix{1 0 0 1}%
   \rlap{\pdfstartlink
            attr {/Border [0 0 1]}
            user {/Subtype /Link
                  /A <<
                    /Type /Action
                    /S /URI
                    /URI (http://luatex.org/)
                  >>}
         Link
         \pdfendlink}%
    \pdfrestore}
\bye
--

When commenting out \pdfsave, \pdfsetmatrix and \pdfrestore,
everything is fine. With the (identity) transformation however, the
text is still placed right, but the link annotation is on the bottom
of the page.

The example works fine with pdftex. I have tried luatex 0.70.2 shipped
with texlive 2012 and the recently released luatex 0.74.0.

Merry Christmas,
Vianney
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