[FEATURE] Execute previous commands

[danthe1st]

Is your feature request related to a problem? Please describe.
It is very useful to access previous commands in a shell without going back to the whole line.

Describe the solution you'd like
In many shells, there is a built-in !! which represents the last executing command. For example, when running sudo !! after apt update, it runs sudo apt update. Just executing !! runs the last command again.
Similarly, those shells allow writing ! followed by text and it then executes the last command that starts with that text (e.g. sudo !apt runs sudo apt update)

Describe alternatives you've considered
It would also be possible to use a different character but that would be surprising to people who used other shells before.

Additional context
This should work in scripts as well as in interactive mode (like any syntax feature).
It should also work inside variable substitutions, function calls etc.

[gsayson]

Considering that ! already represents EMBES (exclamation-mark builtin escape syntax; see docs/error-index.md error 01), should we just provide some form of special handling for the !! case?

I doubt that there would be an executable on the path named !.

Also, how would we handle it if there was no previous command executed before (!! is the first command in the history)?

[SaHHiiLL]

should we just provide some form of special handling for the !! case?

Yes.

I doubt that there would be an executable on the path named !.

Well, you doubt that but it is entirely possible to make an executable with the name !.

Also, how would we handle it if there was no previous command executed before (!! is the first command in the history)?

just error out in that case, I don't see a reason why it should be any different.
here's an example of when I cleared my .zsh_histroy and ran !!

[gsayson]

... it is entirely possible to make an executable with the name !.

Yeah, but there's an insanely low chance that a user will install an executable named ! and put it on ?PATH?.
Anyways, I'll just assign error code 02 to !! having no command to run.

I'll aim to close this by 0.3.0.

[danthe1st]

It should be possible to still execute executables starting with !. One possibility would be to quote it (e.g. '!a' or '/bin/!a').