Index: Lib/idlelib/ScriptBinding.py
===================================================================
--- Lib/idlelib/ScriptBinding.py	(révision 66703)
+++ Lib/idlelib/ScriptBinding.py	(copie de travail)
@@ -52,17 +52,28 @@
         self.flist = self.editwin.flist
         self.root = self.editwin.root
 
+    def detect_encoding(self, filename):
+        """
+        Detect the encoding of a Python script: find the "#coding:" header at line
+        1 or line 2.
+        """
+        f = open(filename, 'rb')
+        encoding, line = tokenize.detect_encoding(f.readline)
+        f.close()
+        return encoding
+
     def check_module_event(self, event):
+        encoding = self.detect_encoding(filename)
         filename = self.getfilename()
         if not filename:
             return 'break'
-        if not self.checksyntax(filename):
+        if not self.checksyntax(filename, encoding):
             return 'break'
-        if not self.tabnanny(filename):
+        if not self.tabnanny(filename, encoding):
             return 'break'
 
-    def tabnanny(self, filename):
-        f = open(filename, 'r')
+    def tabnanny(self, filename, encoding):
+        f = open(filename, 'r', encoding=encoding)
         try:
             tabnanny.process_tokens(tokenize.generate_tokens(f.readline))
         except tokenize.TokenError as msg:
@@ -78,11 +89,11 @@
             return False
         return True
 
-    def checksyntax(self, filename):
+    def checksyntax(self, filename, encoding):
         self.shell = shell = self.flist.open_shell()
         saved_stream = shell.get_warning_stream()
         shell.set_warning_stream(shell.stderr)
-        f = open(filename, 'r')
+        f = open(filename, 'r', encoding=encoding)
         source = f.read()
         f.close()
         if '\r' in source:
@@ -121,10 +132,11 @@
         filename = self.getfilename()
         if not filename:
             return 'break'
-        code = self.checksyntax(filename)
+        encoding = self.detect_encoding(filename)
+        code = self.checksyntax(filename, encoding)
         if not code:
             return 'break'
-        if not self.tabnanny(filename):
+        if not self.tabnanny(filename, encoding):
             return 'break'
         shell = self.shell
         interp = shell.interp