RCR 164: New interpreter switch

This is a legacy RCR from Ruby Garden, submitted by martindemello. Matz has declared these RCRs obsolete, and asked that their authors resubmit them in the new format.

It'd be useful to have a switch for the following implicit loop:

while gets

  print $_.instance_eval {
    ...
  }

end

This would help the common use pattern of piping a series of lines through a script.

Old:

ruby -n -e 'puts $_.split.join(" | ")'
ruby -p -e '$_ = $_.split.join(" | ") + "n"'

New:

ruby -j -e 'split.join(" | ") + "n"'
ruby -j -e 'split.join(" | ").newline"'

(RCR imported from old format)

(RCR imported from old format)

(RCR imported from old format)