The changes in (closed) issue ~nxg/unity#7 should be made available in the C library, too.
The C library is not generally as functional as the Java library, and probably won't become so unless there is specific demand for that, but the two libraries should match in basic functional respects such as this.
Resolved in bf7b99aa1614 – there is little actual support for dimensions in the C library, so there is little to fix.