Re: Issue 633 in robotframework: Run Keyword Unless problem

[robotframework]

Updates:
        Status: WontFix

Comment #5 on issue 633 by pekka.klarck: Run Keyword Unless problem
http://code.google.com/p/robotframework/issues/detail?id=633
Well, we could a mechanism that allows keywords to return special values  
that won't set variables at all. That could easily make the test data hard  
to understand, though, as you couldn't ever be sure does variable exists  
after you do `${var} =  Some Kw`. I think the proposed workarounds,  
especially the one proposed by Jussi, are more clear.