new alias "edit" and "rename" options

[highflyer77]

@flashcode , as per your instruction of your request #518

"For the edition of aliases, please open a separate issue."

/alias should have an edit option.
That would allow the output to be viewed exactly like it was created and sending it to the input bar,
so that it could be more easily edited and ready for re-input (trigger has a similar feature),
but edit is a much better more sane option name (much easier for users to remember).

Additionally, /alias could also use a rename option (like /filter and /trigger has).

[flashcode]

If an option addreplace is added (see #657), then the edit option is not needed.

By the way you can already edit alias, with two ways:

1. /alias add <name> [TAB] (this will complete with the content of the alias)
2. /set alias.cmd.<name> [TAB] (see /set alias.*)

And OK for a rename option.

[highflyer77]

For me,

1. does not work, it just dumps the commands into the status bar. It might be the way I have my completion setup, probably, but I don't know?

So, not a solution for everybody.

2. works but seems "kludgy", I always just used /iset to do it, but still "kludgy", compared to just running:

/alias edit foo

[flashcode]

Hi,
It's possible to edit aliases with /fset and the rename option as been added in 4.0.0.
So I close this issue.