The benefit of the wpx method is not worth the maintenance effort.
There are still a few instances of wpx left in AInvs, which will have
to be fixed later.
We are keeping the wps method from the same file (WPEx.thy), because
that is used more widely and does not break with Isabelle2021-1
Signed-off-by: Gerwin Klein <gerwin.klein@proofcraft.systems>
This mostly refactors ML code to avoid non-exhaustive matches, restore
the (op infix) syntax that got lost in a previous Isabelle update, and
removes some unused functions/parameters.
Signed-off-by: Gerwin Klein <gerwin.klein@data61.csiro.au>
Gerwin Klein
Gerwin Klein
Thomas Sewell