lcut.bash

lcut() {
  local input
  if [ -p /dev/stdin ]; then
    input=$(cat -)
  else
    input=$(cat $1)
    shift
  fi
  echo $input | perl -slane '@pairs = /(\w+=?(?:"[^"]*"|[^\s]*))/g;
@keys = split /\s+/, $args;
foreach $key (@keys) {
  foreach $pair (@pairs) {
    ($k, $v) = split /=/, $pair;
    print $pair if $key eq $k;
  }
}' -- -args="$*"
}

lfmt.bash

lfmt() {
  local input
  if [ -p /dev/stdin ]; then
    input=$(cat -)
  else
    input=$(cat "$@")
  fi
  echo $input | perl -pe 's/(\w+=?(?:"[^"]*"|[^\s]*))/\n$1/g'
}