While I'd appreciate that facility too, it seems... even-more-fanciful, as one tool would need to somehow incorporate all the logic and quirks of all supported commands, including ones which could be very destructive if anything went wrong.

Kind of like positing a master `dry-run` command as opposed to different commands implementing `--dry-run` arguments.

I did muck around with using "sed" to process the "man" output to find a relevant long option in a one-liner, so it wouldn't be too difficult to implement.

I did something like this:

  _command="sed" _option="n"
  man -- "${_command}" | sed --quiet --expression  "s/^       -${_option}.*, //p"