Default configuration does not translate any message : nicobo or @nicobo must appear

Also, patterns are doc'ed as (localized) commands OR simple string to 
localize

docker/default-conf/i18n.en.yml

@@ -2,20 +2,32 @@ en:
     # If present, this is a template to use for all messages
     all_messages: 🤖 %{message}
 
-    # If a message matches this pattern, bot will try to translate <message> into the configured locale
-    # See https://docs.python.org/3/howto/regex.html#regex-howto for details on the format
-    translate_default_locale: ^(?P<message>.+)$
-
-    # If a message matches this pattern, bot will try to translate <message> into <language>
-    # See https://docs.python.org/3/howto/regex.html#regex-howto for details on the format
-    translate: ^(?P<message>.+)\s+in\s+(?P<language>.+)$
-
     # Sent when the bot cannot translate a given message
     IDontKnow: I don't know
 
-    # Key sentence that shuts the bot down
-    Shutdown: bye nicobot
-
     # Set the following banners explicitely to the empty string "" to disable them
     Hello: nicobot ready 🤟
     Goodbye: See you later 👋
+
+    #####################
+    # COMMANDS
+    #
+    # The following patterns are used to detect commands in the received messages
+    #####################
+
+    # If a message matches this pattern, bot will try to translate <message> into the configured locale
+    # See https://docs.python.org/3/howto/regex.html#regex-howto for details on the format
+    # Matching is made with case ignored
+    # TODO rename to pattern_translate_default_locale or command_... to make it clear it's not a text to localize
+    translate_default_locale: '@?nicobot\s+(?P<message>.+)$'
+
+    # If a message matches this pattern, bot will try to translate <message> into <language>
+    # See https://docs.python.org/3/howto/regex.html#regex-howto for details on the format
+    # Matching is made with case ignored
+    # TODO rename to pattern_translate or command_... to make it clear it's not a text to localize
+    translate: '@?nicobot\s+(?P<message>.+)\s+in\s+(?P<language>.+)$'
+
+    # Key sentence that shuts the bot down
+    # Matching is made with case ignored
+    # TODO rename to pattern_Shutdown or command_shutdown to make it clear it's not a text to localize
+    Shutdown: bye nicobot

docker/default-conf/i18n.fr.yml

@@ -2,20 +2,31 @@ fr:
     # Si présent, ce motif sera utilisé pour formater tous les messages envoyés
     all_messages: 🤖 %{message}
 
-    # Si un message correspond à ce motif, le bot tentera de le traduire dans la langue locale configurée
-    # Voir https://docs.python.org/3/howto/regex.html#regex-howto pour le format
-    translate_default_locale: ^(?P<message>.+)$
-
-    # Si un message correspond à ce motif, le bot tentera de traduire <message> dans la langue <language>
-    # Voir https://docs.python.org/3/howto/regex.html#regex-howto pour le format
-    translate: ^(?P<message>.+)\s+en\s+(?P<language>.+)$
-
     # Ce message est envoyé lorsque le bot ne sait pas traduire le message demandé
     IDontKnow: Je ne sais pas
 
-    # Phrase clé pour éteindre le bot
-    Shutdown: couché nicobot
-
     # Remplacez ces messages par une chaîne vide "" afin de les désactiver
     Hello: nicobot paré 🤟
     Goodbye: A+ 👋
+
+    #####################
+    # COMMANDS
+    #
+    # The following patterns are used to detect commands in the received messages
+    #####################
+
+    # Si un message correspond à ce motif, le bot tentera de le traduire dans la langue locale configurée
+    # Voir https://docs.python.org/3/howto/regex.html#regex-howto pour le format
+    # Matching is made with case ignored
+    # TODO rename to pattern_translate_default_locale to make it clear it's not a text to localize
+    translate_default_locale: '@?nicobot\s+(?P<message>.+)$'
+
+    # Si un message correspond à ce motif, le bot tentera de traduire <message> dans la langue <language>
+    # Voir https://docs.python.org/3/howto/regex.html#regex-howto pour le format
+    # Matching is made with case ignored
+    # TODO rename to pattern_translate to make it clear it's not a text to localize
+    translate: '@?nicobot\s+(?P<message>.+)\s+en\s+(?P<language>.+)$'
+
+    # Phrase clé pour éteindre le bot
+    # Matching is made with case ignored
+    Shutdown: couché nicobot