exp/template: improve error message for non-exported field.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/4636086

diff --git a/src/pkg/exp/template/exec.go b/src/pkg/exp/template/exec.go
index 1857e403ff7301fb07902034fbbf5e6d211dd123..87219e5e6c237ff5e3b70b4c4209ebb2ba963556 100644 (file)
--- a/src/pkg/exp/template/exec.go
+++ b/src/pkg/exp/template/exec.go
@@ -255,7 +255,7 @@ func (s *state) evalField(data reflect.Value, fieldName string) reflect.Value {
                if field.IsValid() && isExported(fieldName) { // valid and exported
                        return field
                }
-               s.errorf("%s has no field %s", data.Type(), fieldName)
+               s.errorf("%s has no exported field %q", data.Type(), fieldName)
        default:
                s.errorf("can't evaluate field %s of type %s", fieldName, data.Type())
        }