adv_chat/default_config.json

{
  "schemes" : {
    "minetest" : {"message_prefix": "", "message_suffix": "", "mention_prefix": "#FFFF00@", "mention_delim": "#FFFF00, ", "content_prefix": "#FFFF00: #FFFFFF"}, 
    "other" : null
  },
  "bridges" : {
    "discord" : null,
    "irc" : null
  },
  "roles_case_insensitive": true
}