End of Life Ruby 3.2 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

OptionParser#help

help

# File tmp/rubies/ruby-3.2.0/lib/optparse.rb, line 1347
def help; summarize("#{banner}".sub(/\n?\z/, "\n")) end

Returns option summary string.

See also #getopts #inc #environment #load also in 4.1 · 4.0 · 3.4 · 3.3 · 3.1 · 3.0