End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →
instance method
OptionParser#on_head
on_head(*params, &block)
lib/optparse.rb
View on GitHub ↗
# File tmp/rubies/ruby-3.0.5/lib/optparse.rb, line 1542
def on_head(*opts, &block)
define_head(*opts, &block)
self
end
Add option switch like with on, but at head of summary.