question about nullok in outfile

Guy Bottu gbottu at
Thu Jun 24 12:49:38 UTC 2004

	Dear colleagues,

I noticed a change of behaviour for the case when you have an ACD object 
of type outfile with attribute "nullok: Y" and without "default", when 
the user puts nothing on the command line.
With EMBOSS 2.6.0 no output file was created. I think this is the 
behaviour that one should expect, since the on-line ACD manual says "Can 
accept a null filename as 'no file'".
Since EMBOSS 2.8.0 however an output file is always created. In the case 
that there are several outfile objects it can have a name like 
"xxx.out2". Is this change in behaviour intended or is it a bug 
introduced together with some other change ?

	Guy Bottu,

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