[cffi-devel] Library specs with T are ignored

[Kalyanov Dmitry]

Hello, cffi-devel!

I have found a case when cffi behaves not as documented.
The documentation in page for define-foreign-library says about load-clauses 
list that "Finally, if feature is t, this load-clause is picked 
unconditionally."

But the load-clause with feature set to T is ignored, because function 
%foreign-library-spec uses alexandria:featurep, which does consider T to be 
feature.

This patch should fix this: to return the load-clause that has feature set to 
T.

Test case:
(define-foreign-library libgraphan-wrap
  (t (:default "libgraphan-wrap")))

(equal
  (%foreign-library-spec (get-foreign-library 'libgraphan-wrap))
  (t (:default "libgraphan-wrap")))
=>
 T
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