--- a/libervia/tui/chat.py	Tue Jun 18 12:06:45 2024 +0200
+++ b/libervia/tui/chat.py	Wed Jun 19 18:44:57 2024 +0200
@@ -245,7 +245,9 @@
             urwid.ListBox(self.occupants_walker), footer=self.occupants_footer
         )
         super(OccupantsWidget, self).__init__(occupants_widget)
-        occupants_list = sorted(list(self.parent.occupants.keys()), key=lambda o: o.lower())
+        occupants_list = sorted(
+            list(self.parent.occupants.keys()), key=lambda o: o.lower()
+        )
         for occupant in occupants_list:
             occupant_data = self.parent.occupants[occupant]
             self.occupants_walker.append(OccupantWidget(occupant_data))
@@ -284,8 +286,17 @@
 
 
 class Chat(LiberviaTUIWidget, quick_chat.QuickChat):
-    def __init__(self, host, target, type_=C.CHAT_ONE2ONE, nick=None, occupants=None,
-                 subject=None, statuses=None, profiles=None):
+    def __init__(
+        self,
+        host,
+        target,
+        type_=C.CHAT_ONE2ONE,
+        nick=None,
+        occupants=None,
+        subject=None,
+        statuses=None,
+        profiles=None,
+    ):
         self.filters = []  # list of filter callbacks to apply
         self.mess_walker = urwid.SimpleListWalker([])
         self.mess_widgets = urwid.ListBox(self.mess_walker)
@@ -294,8 +305,15 @@
         self.pile = urwid.Pile([self.chat_colums])
         LiberviaTUIWidget.__init__(self, self.pile, target)
         quick_chat.QuickChat.__init__(
-            self, host, target, type_, nick, occupants, subject, statuses,
-            profiles=profiles
+            self,
+            host,
+            target,
+            type_,
+            nick,
+            occupants,
+            subject,
+            statuses,
+            profiles=profiles,
         )
 
         # we must adapt the behaviour with the type
@@ -334,7 +352,7 @@
         elif key == a_key["SHORT_NICKNAME"]:  # user wants to (not) use short nick
             self.show_short_nick = not self.show_short_nick
             self.redraw()
-        elif (key == a_key["SUBJECT_SWITCH"]):
+        elif key == a_key["SUBJECT_SWITCH"]:
             # user wants to (un)hide group's subject or change its apperance
             if self.subject:
                 self.show_title = (self.show_title + 1) % 3
@@ -448,11 +466,11 @@
             #   it should be done in a more user friendly way
             for lang, body in message.message.items():
                 for attachment in message.attachments:
-                    if 'url' in attachment:
-                        body+=f"\n{attachment['url']}"
-                    elif 'path' in attachment:
-                        path = Path(attachment['path'])
-                        body+=f"\n{path.as_uri()}"
+                    if "url" in attachment:
+                        body += f"\n{attachment['url']}"
+                    elif "path" in attachment:
+                        path = Path(attachment["path"])
+                        body += f"\n{path.as_uri()}"
                     else:
                         log.warning(f'No "url" nor "path" in attachment: {attachment}')
                     message.message[lang] = body
@@ -464,8 +482,9 @@
         if self.handle_user_moved(message):
             return
 
-        if ((self.host.selected_widget != self or not self.host.x_notify.has_focus())
-            and self.focus_marker_set is not None):
+        if (
+            self.host.selected_widget != self or not self.host.x_notify.has_focus()
+        ) and self.focus_marker_set is not None:
             if not self.focus_marker_set and not self._locked and self.mess_walker:
                 if self.focus_marker is not None:
                     try:
@@ -604,7 +623,9 @@
             except AttributeError:
                 pass
 
-    def update_history(self, size=C.HISTORY_LIMIT_DEFAULT, filters=None, profile="@NONE@"):
+    def update_history(
+        self, size=C.HISTORY_LIMIT_DEFAULT, filters=None, profile="@NONE@"
+    ):
         del self.mess_walker[:]
         if filters and "search" in filters:
             self.mess_walker.append(