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This is an example of a syntactically valid legal expression in Lua,
taken from the PEGTL github grammar for Lua, by Dr. Colin Hirsch and
Daniel Frey (I hope they don't mind me repeating it here):
   ( a * b ).c()[ d ].e:f()

 Other than being a function (method?) call to f, what is the meaning
of the parse of it, step by step, from left to right?

Thanks for your assistance!