Returns defined dspecs matching a name.
dspec
name-defined-dspecs classes name => dspecs
classes
A list of dspec class names.
name
A name.
dspecs
A list of canonical dspecs.
The function name-defined-dspecs looks in each of the dspec classes classes for definitions of name .
For each definition found (as if by dspec-defined-p), the result dspecs contains the canonical dspec.
dspec-defined-p