Nicer quoting in "attempted access of field" message. Issue #2358.

Author: lkuper

src/rustc/middle/typeck/check.rs

@@ -1551,8 +1551,9 @@ fn check_expr_with_unifier(fcx: @fn_ctxt,
               }
               none {
                 let t_err = fcx.infcx.resolve_type_vars_if_possible(expr_t);
-                let msg = #fmt["attempted access of field %s on type %s, but \
-                          no public field or method with that name was found",
+                let msg = #fmt["attempted access of field `%s` on type `%s`, \
+                                but no public field or method with that name \
+                                was found",
                                *field, fcx.infcx.ty_to_str(t_err)];
                 tcx.sess.span_err(expr.span, msg);
                 // NB: Adding a bogus type to allow typechecking to continue

src/test/compile-fail/class-cast-to-iface.rs

@@ -1,4 +1,4 @@
-// error-pattern: attempted access of field eat on type noisy
+// error-pattern: attempted access of field `eat` on type `noisy`
 iface noisy {
   fn speak();
 }

src/test/compile-fail/private-method-cross-crate.rs

@@ -1,4 +1,4 @@
-// error-pattern:attempted access of field nap on type
+// error-pattern:attempted access of field `nap` on type
 // xfail-fast
 // aux-build:cci_class_5.rs
 use cci_class_5;

src/test/compile-fail/unsafe-fn-autoderef.rs

@@ -15,7 +15,7 @@ fn f(p: *rec) -> int {
     // are prohibited by various checks, such as that the enum is
     // instantiable and so forth).
 
-    ret p.f; //! ERROR attempted access of field f on type *rec
+    ret p.f; //! ERROR attempted access of field `f` on type `*rec`
 }
 
 fn main() {

src/test/compile-fail/vec-field.rs

@@ -1,4 +1,4 @@
-// error-pattern:attempted access of field some_field_name on type [int]
+// error-pattern:attempted access of field `some_field_name` on type `[int]`
 // issue #367
 
 fn f() {