cert_def: use Logic.dest_def; moved abs_def to logic.ML; derived_def: conditional flag;

Toplevel.local_theory;

LocalDefs.cert_def; tuned;

eq_prop: Envir.beta_eta_contract;

renamed xxx_multi to xxx_list; tuned;

moved combound, rlist_abs to logic.ML;

union_tpairs: Library.merge; Envir.(beta_)eta_contract; tuned;

moved no_vars to sign.ML; removed dest_def (cf. Sign.cert_def);

lambda: abstract over any const; tuned;

added add_abbrevs(_i); moved const_of_class/class_of_const to logic.ML; added no_vars (from theory.ML); added cert_def; added const_expansion; certify: refer to Consts.certify, which includes expansion;

moved (beta_)eta_contract to envir.ML; tuned;

tuned;

added generic dest_def (mostly from theory.ML); added abs_def (from Isar/local_defs.ML); added const_of_class/class_of_const (from sign.ML); added combound, rlist_abs (from unify.ML);

added (beta_)eta_contract (from pattern.ML); added expand_atom;

print_theory: const abbreviations;

added abbreviations; added certify (mostly from sign.ML);

load envir.ML and logic.ML early;

Logic.rlist_abs;

Logic.const_of_class/class_of_const;

TableFun: renamed xxx_multi to xxx_list;

replaced Symtab.merge_multi by local merge_rules;

Envir.(beta_)eta_contract;

subsituted gen_duplicates / has_duplicates for duplicates whenever appropriate

added strip_abs

clarified semantics of merge

speedup: use simproc for AC rules

UU_reorient_simproc no longer rewrites UU = numeral

removed obsolete gen_ins/mem; added merge -- supercedes gen_merge_lists';