more robust ML antiquotations -- allow original tokens without adjacent whitespace;

--- a/src/Pure/ML/ml_antiquote.ML	Tue Dec 21 19:35:36 2010 +0100
+++ b/src/Pure/ML/ml_antiquote.ML	Tue Dec 21 21:05:50 2010 +0100
@@ -48,7 +48,7 @@
     let
       val (a, background') = variant (translate_string (fn "." => "_" | c => c) name) background;
       val env = kind ^ " " ^ a ^ " = " ^ s ^ ";\n";
-      val body = "Isabelle." ^ a;
+      val body = " Isabelle." ^ a ^ " ";
     in (K (env, body), background') end));
 
 val value = declaration "val";

--- a/src/Pure/ML/ml_thms.ML	Tue Dec 21 19:35:36 2010 +0100
+++ b/src/Pure/ML/ml_thms.ML	Tue Dec 21 21:05:50 2010 +0100
@@ -39,7 +39,7 @@
       val i = serial ();
       val (a, background') = background
         |> ML_Antiquote.variant kind ||> put_thms (i, ths);
-      val ml = (thm_bind kind a i, "Isabelle." ^ a);
+      val ml = (thm_bind kind a i, " Isabelle." ^ a ^ " ");
     in (K ml, background') end));
 
 val _ = thm_antiq "thm" (Attrib.thm >> single);
@@ -69,7 +69,8 @@
         val (a, background') = background
           |> ML_Antiquote.variant "lemma" ||> put_thms (i, the_thms ctxt' i);
         val ml =
-          (thm_bind (if length (flat propss) = 1 then "thm" else "thms") a i, "Isabelle." ^ a);
+          (thm_bind (if length (flat propss) = 1 then "thm" else "thms") a i,
+            " Isabelle." ^ a ^ " ");
       in (K ml, background') end));
 
 end;

--- a/src/Tools/Code/code_runtime.ML	Tue Dec 21 19:35:36 2010 +0100
+++ b/src/Tools/Code/code_runtime.ML	Tue Dec 21 21:05:50 2010 +0100
@@ -228,16 +228,13 @@
 
 fun register_const const = register_code [] [const];
 
-fun print_const const all_struct_name consts_map =
-  (Long_Name.append all_struct_name o the o AList.lookup (op =) consts_map) const;
-
 fun print_code is_first const ctxt =
   let
     val (_, (_, acc_code)) = Code_Antiq_Data.get ctxt;
     val (ml_code, consts_map) = Lazy.force acc_code;
     val ml_code = if is_first then ml_code else "";
-    val all_struct_name = "Isabelle";
-  in (ml_code, print_const const all_struct_name consts_map) end;
+    val body = " Isabelle." ^ the (AList.lookup (op =) consts_map const) ^ " ";
+  in (ml_code, body) end;
 
 in