.input-append should work for select element, fixes #2137

less/forms.less

@@ -361,6 +361,7 @@ select:focus:required:invalid {
   margin-bottom: 5px;
   .clearfix(); // Clear the float to prevent wrapping
   input,
+  select,
   .uneditable-input {
     .border-radius(0 3px 3px 0);
     &:focus {
@@ -400,6 +401,7 @@ select:focus:required:invalid {
 }
 .input-append {
   input,
+  select
   .uneditable-input {
     float: left;
     .border-radius(3px 0 0 3px);