[vtkusers] vtkSTLWriter strongly confusing behavior

[Dominik Szczerba]

It is once again that I had to pay a few hours debugging to find out I 
miss to merge coincident points after append filter. This is because I 
was confused by vtkSTLWriter (that I used to output a test mesh) which 
is merging the points in the mesh he writes. So I thought the mesh is OK 
while it was not! I think STLWriter should not do it in order not to 
fool the users. Or it at least should be an option (defaulting to 
merging off). What do others think?
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