[isabelle-dev] Spurious messages

[Jasmin Christian Blanchette]

Hi all,

With the latest Isabelle (44b33c1e702e), some attributes, e.g. "unify_search" bound, give pairs of spurious warnings, e.g.

    ### Ignoring local change of global option "unify_search_bound"

even when they are declared globally, as in the theory below:

    theory Scratch
    imports Main
    begin

    declare [[unify_search_bound = 55]]
    declare [[unify_trace_bound = 55]]

The declarations are thankfully _not_ ignored.

Jasmin