[metapost] Problem with readfrom

[Reinhard Kotucha]

On 14 June 2010 Karel wrote:

 > Christophe Poulain napsal(a):
 > > hi,
 > > 
 > > i've used the following code
 > > 
 > > beginfig(1);
 > > string toto;
 > > toto="datas/"&"fichier.dat"
 > > numeric num;
 > > num=scantokens readfrom toto;
 > > endfig;
 > > 
 > > (fichier.dat is a file with numeric numbers, one per line)
 > > 
 > > but, with metapost 1.203, it doesn't compile and with metapost 0.993,
 > > it compile.
 > > With metapost 1.203,
 > > 	num=scantokens readfrom "datas/fichier.dat"
 > > works.
 > > 
 > > Where is the problem ?
 > > 
 > 
 > The line
 > toto="datas/"&"fichier.dat"
 > should end with ;

But

  toto="datas/"&"fichier.dat"
  numeric num;

without the semicolon produces a completely misleading error message:

! Extra tokens will be flushed.
<to be read again> 
                   numeric
l.4 numeric
            num;
? 

Isn't it possible to provide a more reasonable error message?

Regards,
  Reinhard

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