Parses the argument array args, according to the pattern s, to retrieve the single character command line options from it. If s is 'xy:' an option '-x' without an option argument is searched, and an option '-y foo' with an option argument ('foo').
An option hash is returned with all found options set to true or the found option argument.
# File lib/spruz/go.rb, line 12 def go(s, args = ARGV) b,v = s.scan(%r(.)(:?)/).inject([{},{}]) { |t,(o,a)| a = a == ':' t[a ? 1 : 0][o] = a ? nil : false t } while a = args.shift a !~ %r\A-(.+)/ and args.unshift a and break p = $1 until p == '' o = p.slice!(0, 1) if v.key?(o) v[o] = if p == '' then args.shift or break 1 else p end break elsif b.key?(o) b[o] = true else args.unshift a break 1 end end and break end b.merge(v) end