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instance method
OptionParser#program_name
() -> ::String
program_name
lib/optparse.rb
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# File tmp/rubies/ruby-4.1.0-preview1/lib/optparse.rb, line 1294
def program_name
@program_name || strip_ext(File.basename($0))
end
Program name to be emitted in error message and default banner, defaults to $0.