[pstricks] psk at yref

[John Frampton]

Question (probably for Herbert)

I have the following code in one of my linguistics packages.  It
has worked flawlessly for years.

    \ifx\psk at yref\relax
       \else
          \advance\ASR at ypos by -\psk at yref\ASR at dputht
       \fi

The new (end of March) version of pstricks breaks this.
It seems that the meaning of \psk at yref has been changed.  I could
spend some time rummaging around pstricks to find out what is
going on, but it would ease my task if someone knows what change
has been made and could give me a pointer to the problem area.

Thanks,
John Frampton