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instance method
OptionParser#banner
() -> ::String
banner
lib/optparse.rb
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# File tmp/rubies/ruby-4.1.0-preview1/lib/optparse.rb, line 1282
def banner
unless @banner
@banner = +"Usage: #{program_name} [options]"
visit(:add_banner, @banner)
end
@banner
end
Heading banner preceding summary.