def options(opt)
opt.on :ex, "Show the context of the last exception.", :optional => true, :as => Integer
opt.on :i, :in, "Show one or more entries from Pry's expression history.", :optional => true, :as => Range, :default => -5..-1
opt.on :s, :start, "Starting line (defaults to the first line).", :optional => true, :as => Integer
opt.on :e, :end, "Ending line (defaults to the last line).", :optional => true, :as => Integer
opt.on :l, 'line-numbers''line-numbers', "Show line numbers."
opt.on :t, :type, "The file type for syntax highlighting (e.g., 'ruby' or 'python').", true, :as => Symbol
opt.on :f, :flood, "Do not use a pager to view text longer than one screen."
end