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Mike McGonagle wrote:

for line in io.lines(filename) do
   name, register, sliders = line:match("([%S]*)[%s]*([%S]*)[%s]*([%S]*)")
   print(string.format("name = '%s' register = '%s' sliders = '%s'",
name, register, slider))
end


[...]


But I get the error of "bad argument #4 to 'format' (string expected,
got no value)", and the variable 'slider' is 'nil'.


This is because of a spelling error in the arg. #4: must be "sliders".

--
Shmuel