Fixed nonexhaustive match problem in decomp, to make it fail more gracefully
in case assumptions are not of the form (Trueprop $ ...).
(* Title: HOL/Real/HahnBanach/ROOT.ML
ID: $Id$
Author: Gertrud Bauer, TU Munich
The Hahn-Banach theorem for real vector spaces (Isabelle/Isar).
*)
time_use_thy "HahnBanach";