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function file_exists(name)
local f=io.open(name,"r")
if f~=nil then io.close(f) return true else return false end
end
-- {{{ Helper functions
function client_menu_toggle_fn()
local instance = nil
return function ()
if instance and instance.wibox.visible then
instance:hide()
instance = nil
else
instance = awful.menu.clients({ theme = { width = 250 } })
end
end
end
-- }}}
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