The command @kbd{C-c .}@: (@code{comint-input-previous-argument}) (@code{comint-insert-previous-argument}) copies an individual argument from a previous command, like @kbd{@key{ESC} .} .}@: in Bash. Bash and @command{zsh}. The simplest use copies the last argument from the previous shell command. With a prefix argument @var{n}, it copies the @var{n}th argument instead. Repeating @kbd{C-c .} copies from an earlier shell command instead, commands, always using the same value of @var{n} (don't give a prefix argument when you repeat the @kbd{C-c .} command).