# Copies the contents of a given file or stdin to the system or X Windows
# clipboard
#
# Usage: copyfile [<file>]
function copyfile {
  emulate -L zsh

  clipcopy "${1-}" || {
    echo "Usage: copyfile [<file>]"
    return 1
  }

  echo ${(%):-"%B${1:-/dev/stdin}%b copied to clipboard."}
}