force a build before commit if build fails do not commit.
It wuould be nice to prevent code that does not build to be committed. This would prevent broken code to go to the repository and no more broken build warnings from cruise control.

This looks like a great suggestion for an AnkhSVN-Addin.
This feature wouldn’t be generally usable as Subversions mixed revision working copies make it impossible to guarantee that a local successful build is succesfull on a different pc.