[Geany] DMD 2 and Geany: error argument expected for switch '-of'

[Brendan]

This is what I get: in the compiler tab:

dmd -w "testing.d" -of "testing" (in directory: ~/Geany_Proj/testingD2)
Compilation failed.
Error: argument expected for switch '-of'

Why is that switch there? Is it necessary? How do I prevent Geany from using
that switch?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.geany.org/pipermail/users/attachments/20080906/172e2902/attachment.html>