diff --git a/gestion/darcs_send_changes.py b/gestion/darcs_send_changes.py
index 6e9d16bf..a13b56f6 100755
--- a/gestion/darcs_send_changes.py
+++ b/gestion/darcs_send_changes.py
@@ -35,12 +35,28 @@ except:
     sys.exit(1)
 
 sys.path.append("/usr/scripts/gestion")
-from affich_tools import cprint
+from affich_tools import cprint, encoding
 from unicode2ascii import unicode2ascii
 
+def to_utf8(str):
+    """ Decode un str ou un unicode vers un str en UTF-8. """
+    if isinstance(str, unicode):
+        return str.encode("UTF-8")
+    else:
+        try:
+            # Si c'est une chaine brute, on commend par essayer
+            # de la décoder comme une chaine en UTF-8
+            str.decode("UTF-8")
+            return str
+        except:
+            try:
+                return str.decode(encoding).encode("UTF-8")
+            except:
+                return str
+
 def darcs(args):
     """ Invoque darcs et renvoie sa sortie. """
-    return commands.getoutput("env DARCS_DONT_ESCAPE_8BIT=1 darcs " + args)
+    return to_utf8(commands.getoutput("env DARCS_DONT_ESCAPE_8BIT=1 darcs " + args))
 
 def get_patch_properties():
     """ Récupère les informations a propos du dernier patch. """
@@ -54,8 +70,8 @@ def get_patch_properties():
              'shortrepo': os.path.basename(cwd),
              'date': prop.attrib['local_date'],
              'hash': prop.attrib['hash'],
-             'name': prop.findtext('name').encode("UTF-8"),
-             'comment': prop.findtext('comment').encode("UTF-8"),
+             'name': prop.findtext('name'),
+             'comment': prop.findtext('comment'),
              'diff': diff,
              'changes': darcs("changes --match='hash %s' --summary" % hash) }
 
@@ -86,16 +102,26 @@ peut contenir les variables suivantes:
 si template est None, DEFAULT_TEMPLATE est utilisé.
 """
     patch_props["recipient"] = ", ".join(recipient)
-    mail = email.message_from_string((template or DEFAULT_TEMPLATE) % patch_props)
-    if not mail['Content-Transfer-Encoding']:
-        mail['Content-Transfer-Encoding'] = 'quoted-printable'
-    if not mail.get_charset():
-        mail.set_charset("UTF-8")
+    # On met toutes valeurs en string, en UTF-8
+    for key, val in patch_props.items():
+        patch_props[key] = to_utf8(val)
+    template = to_utf8(template or DEFAULT_TEMPLATE)
+    mail = email.message_from_string(template % patch_props)
     # On met le titre en ascii sinon c'est atroce pour le filtrage
     # automatique
-    subject = unicode2ascii(mail['Subject'].decode("UTF-8"))
-    mail.replace_header('Subject', subject)
+    subject = mail['Subject']
+    if subject:
+        subject = unicode2ascii(subject.decode("UTF-8"))
+        mail.replace_header('Subject', subject)
+    if not mail['Content-Transfer-Encoding']:
+        mail['Content-Transfer-Encoding'] = 'quoted-printable'
+    charset = mail.get_charset()
+    if not charset:
+        charset = "UTF-8"
+        mail.set_charset("UTF-8")
     rawmail = mail.as_string()
+    if charset != "UTF-8":
+        rawmail = rawmail.decode("UTF-8").encode(charset)
     for to in recipient:
         smtp.sendmail(patch_props['author'], to, rawmail)