http://bugs.winehq.org/show_bug.cgi?id=3795
--- Comment #3 from Detlef Riekenberg wine.dev@web.de 2008-01-08 10:25:10 --- Yes, the bug is still present.
The patch was not accepted (enabled only the available extensions at that time).
Alexandre want a patch that allow every non-empty extension. (And he is correct: In the meantime we have *.exe and *.sys)