+(** select metasenv conjecture pattern
+* select all subterms of [conjecture] matching [pattern].
+* It returns the set of matched terms (that can be compared using physical
+* equality to the subterms of [conjecture]) together with their contexts.
+* The representation of the set mimics the conjecture type (but for the id):
+* a list of (possibly removed) hypothesis (without their names) together with
+* the list of its matched subterms (and their contexts) + the list of matched
+* subterms of the conclusion with their context. Note: in the result the list
+* of hypotheses * has an entry for each entry in the context and in the same
+* order. Of course the list of terms (with their context) associated to one
+* hypothesis may be empty. *)
+val select:
+ metasenv:Cic.metasenv ->
+ conjecture:Cic.conjecture ->
+ pattern:ProofEngineTypes.pattern ->
+ [ `Decl of (Cic.context * Cic.term) list
+ | `Def of (Cic.context * Cic.term) list * (Cic.context * Cic.term) list option
+ ] option list *
+ (Cic.context * Cic.term) list