X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fmatita%2FmatitaLog.ml;h=8d9fbe958586f69bb01f9025961da080255d6c6a;hb=4167cea65ca58897d1a3dbb81ff95de5074700cc;hp=8c2e9a7a5826b0be8c5ec58d9661c39529368fd9;hpb=4b84dd78aa6b596a0d3ee38745890ff65efa8b10;p=helm.git

diff --git a/helm/matita/matitaLog.ml b/helm/matita/matitaLog.ml
index 8c2e9a7a5..8d9fbe958 100644
--- a/helm/matita/matitaLog.ml
+++ b/helm/matita/matitaLog.ml
@@ -40,19 +40,20 @@ let red    = ""
 let black  = ""
 
 let default_callback tag s =
-  let prefix =
+  let prefix,ch =
     match tag with
-    | `Message -> green  ^ "Info:  "
-    | `Warning -> yellow ^ "Warn:  "
-    | `Error ->   red    ^ "Error: "
-    | `Debug ->   blue   ^ "Debug: "
+    | `Message -> green  ^ "Info:  ", stdout
+    | `Warning -> yellow ^ "Warn:  ", stderr
+    | `Error ->   red    ^ "Error: ", stderr
+    | `Debug ->   blue   ^ "Debug: ", stderr
   in
-  print_endline (prefix ^ black ^ s);
-  flush stdout
+  output_string ch (prefix ^ black ^ s ^ "\n");
+  flush ch
 
 let callback = ref default_callback
 
 let set_log_callback f = callback := f
+let get_log_callback () = !callback
 
 let message s = !callback `Message s
 let warn s = !callback `Warning s