From eca0ab25d867dd493b9a36ceaa7c79d9cb73d088 Mon Sep 17 00:00:00 2001
From: ggomez <ggomez@ggo.ifr.lan>
Date: Tue, 16 Feb 2016 14:47:37 +0100
Subject: Add check on find_best_match_for_name and improve help message for
 undefined macro

---
 src/libsyntax/ext/base.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'src/libsyntax')

diff --git a/src/libsyntax/ext/base.rs b/src/libsyntax/ext/base.rs
index 8fc72418eb0..2a9d96fa861 100644
--- a/src/libsyntax/ext/base.rs
+++ b/src/libsyntax/ext/base.rs
@@ -760,7 +760,12 @@ impl<'a> ExtCtxt<'a> {
                               err: &mut DiagnosticBuilder<'a>) {
         let names = &self.syntax_env.names;
         if let Some(suggestion) = find_best_match_for_name(names.iter(), name, None) {
-            err.fileline_help(span, &format!("did you mean `{}!`?", suggestion));
+            if suggestion != name {
+                err.fileline_help(span, &format!("did you mean `{}!`?", suggestion));
+            } else {
+                err.fileline_help(span, &format!("have you added the `#[macro_use]` on the \
+                                                  module/import?"));
+            }
         }
     }
 }
-- 
cgit 1.4.1-3-g733a5