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End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

OptionParser#permute

permute(*argv, into: nil)

Parses command line arguments argv in permutation mode and returns list of non-option arguments. When optional into keyword argument is provided, the parsed option values are stored there via []= method (so it can be Hash, or OpenStruct, or other similar object).

See also #permute! #parse! #parse #program_name also in 4.1 · 4.0 · 3.4 · 3.3 · 3.2 · 3.0