class ExtOptParse
Add grouping to Ruby's `OptionParser`
Example:
p = ExtOptParse.new p.group(:group1) { p.on("-a", "A") } p.group(:group2) { p.on("-b", "B") } p.group(:group1) { p.on("-c", "C") } puts p.help ... -b B -a A -c C ...
@see OptionParser