1.1 --- a/doc-src/more_antiquote.ML	Fri Jan 23 10:21:27 2009 +0100
     1.2 +++ b/doc-src/more_antiquote.ML	Fri Jan 23 10:21:48 2009 +0100
     1.3 @@ -113,13 +113,13 @@
     1.4    val parse_const_terms = Scan.repeat1 Args.term
     1.5      >> (fn ts => fn thy => map (Code_Unit.check_const thy) ts);
     1.6    val parse_consts = Scan.lift (Args.parens (Args.$$$ "consts")) |-- parse_const_terms
     1.7 -    >> (fn mk_cs => fn thy => fn naming => map (the o Code_Thingol.lookup_const naming) (mk_cs thy));
     1.8 +    >> (fn mk_cs => fn thy => fn naming => map_filter (Code_Thingol.lookup_const naming) (mk_cs thy));
     1.9    val parse_types = Scan.lift (Args.parens (Args.$$$ "types") |-- Scan.repeat1 Args.name)
    1.10 -    >> (fn tycos => fn thy => fn naming => map (the o Code_Thingol.lookup_tyco naming o Sign.intern_type thy) tycos);
    1.11 +    >> (fn tycos => fn thy => fn naming => map_filter (Code_Thingol.lookup_tyco naming o Sign.intern_type thy) tycos);
    1.12    val parse_classes = Scan.lift (Args.parens (Args.$$$ "classes") |-- Scan.repeat1 Args.name)
    1.13 -    >> (fn classes => fn thy => fn naming => map (the o Code_Thingol.lookup_class naming o Sign.intern_class thy) classes);
    1.14 +    >> (fn classes => fn thy => fn naming => map_filter (Code_Thingol.lookup_class naming o Sign.intern_class thy) classes);
    1.15    val parse_instances = Scan.lift (Args.parens (Args.$$$ "instances") |-- Scan.repeat1 (Args.name --| Args.$$$ "::" -- Args.name))
    1.16 -    >> (fn insts => fn thy => fn naming => map (the o Code_Thingol.lookup_instance naming o apsnd (Sign.intern_type thy) o apfst (Sign.intern_class thy) o swap) insts);
    1.17 +    >> (fn insts => fn thy => fn naming => map_filter (Code_Thingol.lookup_instance naming o apsnd (Sign.intern_type thy) o apfst (Sign.intern_class thy) o swap) insts);
    1.18    val parse_names = parse_consts || parse_types || parse_classes || parse_instances; 
    1.19  
    1.20    fun code_stmts src ctxt ((mk_cs, mk_stmtss), target) =