From fb78828587a7ff9e39b3f1eaa1cf0786c7adf81e Mon Sep 17 00:00:00 2001
From: letouzey
Date: Tue, 1 Jun 2010 14:28:53 +0000
Subject: restore handling of lexer errors

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@13044 85f007b7-540e-0410-9357-904b9bb8a0f7
---
 lib/compat.ml4      | 1 +
 toplevel/cerrors.ml | 1 +
 2 files changed, 2 insertions(+)

diff --git a/lib/compat.ml4 b/lib/compat.ml4
index aba2720456..312860a63e 100644
--- a/lib/compat.ml4
+++ b/lib/compat.ml4
@@ -80,6 +80,7 @@ module type LexerSig = sig
   module Error : sig
     type t
     exception E of t
+    val to_string : t -> string
   end
 end
 
diff --git a/toplevel/cerrors.ml b/toplevel/cerrors.ml
index 1f5bbc5210..24e770d10b 100644
--- a/toplevel/cerrors.ml
+++ b/toplevel/cerrors.ml
@@ -35,6 +35,7 @@ let rec explain_exn_default_aux anomaly_string report_fn = function
       hov 0 (str "Syntax error: " ++ str txt ++ str ".")
   | Token.Error txt ->
       hov 0 (str "Syntax error: " ++ str txt ++ str ".")
+  | Lexer.Error.E err -> hov 0 (str (Lexer.Error.to_string err))
   | Sys_error msg ->
       hov 0 (anomaly_string () ++ str "uncaught exception Sys_error " ++ str (guill msg) ++ report_fn ())
   | UserError(s,pps) ->
-- 
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