Am 10.04.2009 um 00:53 schrieb luigi scarso:
and why so many '%'?
prevent spurios spaces
after \relax?
\newdimen checks for the existence of a control sequence
the point is that on minimals-beta there is an error,
on minimals no , but xpdf says
Error: ExtGState 'Tr0' is unknown
Error: ExtGState 'Tr0' is unknown
Error: ExtGState 'Tr0' is unknown
Error: ExtGState 'Tr0' is unknown
Error: ExtGState 'Tr0' is unknown
The code is not wrong -- maybe a bit strange
works fine here with preview app or adobe reader
Also this is ok in minimals
fails in minimals-beta,
and I think It's legal code, but I can fail .
\newdimen\currentlayerheight
\starttext
\currentlayerheight=\dimexpr 12pt +0pt\relax%
\the\currentlayerheight
\stoptex\newdimen\currentlayerheight
current: \newdimen\currentlayerheight -> create new dimen register
beta: \newdimen\currentlayerheight -> check if \currentlayerheight is
already defined, it true write a message to the terminal and do
nothing else create a new dimen register what did not happen here
because \currentlayerheight is defined in page-lyr.tex
Wolfgang
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