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Subject: The new beta
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Hi, Hans
   I download the new beta context today. It seems have some problems
when deal with the metapost graphics. I test it with a small file,
use the s-pre-04.tex. when compile, it give error message likes:

(mpgraph.mp (/usr/local/teTeX/share/texmf/metapost/context/mp-tool.mp)
(/usr/local/teTeX/share/texmf/metapost/context/mp-page.mp)
(/usr/local/teTeX/share/texmf/metapost/context/mp-tool.mp)
! Missing parameter type; `expr' will be assumed.
<to be read again> 
                   tex
l.9 def triangle (expr wid,rot)(tex
                                    t col) = x1 := x3 := y1 := 0 tex\relax etex

? 
! Missing `)' has been inserted.
<to be read again> 
                   t
l.9 def triangle (expr wid,rot)(tex t
                                      col) = x1 := x3 := y1 := 0 tex\relax etex

? 
! Missing `=' has been inserted.
<to be read again> 
                   t
l.9 def triangle (expr wid,rot)(tex t
                                      col) = x1 := x3 := y1 := 0 tex\relax etex

? 

I  think it may have some problem in supp-mps.tex with \writeMPgraphics macros.
I saw the mpgraph.mp and find taht in line 9 it is:

def triangle (expr wid,rot)(tex t col) = x1 := x3 := y1 := 0 tex\relax etex
;

but in s-pre-04.tex, the line is :

def triangle (expr wid,rot)(text col) = x1 := x3 := y1 := 0;

When I edit the mpgraph.mp so that it has the same line as that in s-pre-04.tex,
mpost works well. 

Wang
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