btv.messages
btv.messages.actions.clear()
btv.messages.actions.clear(): the default C action inside the :messages panel
(filetype btvmessages). Clears the recorded message history and re-renders the panel
in place. Rebindable like the other panel actions (btv.qf.actions.jump,
btv.buffers.actions.open).
Defined in keymap.lua.