Feature request: history-word-search-*?

The `history-token` functions search the list of previously used arguments as they were passed to executed commands. This is great! There is one use-case, though, where I keep thinking "maybe there could be a better way":

in history:
`ansible-playbook all.yml --limit first-host,second-host,third-host`

later:
`$ ansible-playbook all.yml --limit sec` + `history-token-search-backward`
result:
`$ ansible-playbook all.yml --limit first-host,second-host,third-host`

What happens: the argument `first-host,second-host,third-host` is auto completed. This is great for auto completing _arguments_, but not _partial arguments_, which is what I frequently need, too. So I propose

new:
`$ ansible-playbook all.yml --limit sec` + `history-word-search-backward`
result:
`$ ansible-playbook all.yml --limit second-host`

also:
`$ ansible-playbook all.yml --limit third-host,sec` + `history-word-search-backward`
result:
`$ ansible-playbook all.yml --limit third-host,second-host`