Adding initial support for running interactive commands

[mateuszr]

I looked at feature request #751 and I it seems to me that this is a recurring topic. I would give it a try. This is a straightforward implementation of running interactive command in fzf:

• we specify the command using -c param
• query is fed directly to the command
• the command is run every time the query changes (is rerun as-you-type)
• the list is fed with the new result of the command (and any current selection is gone)
  The speed is acceptable, even though we run a command multiple times.
  I've put some more observations in [Feature request] invoke ag interactively #751.

[andreyorst]

Thanks on working on this!

It would be nice if you could make args compatible with those that skim uses. As maintainer of fzf.kak I try to keep plugin generic and because skim uses pretty much the same args as fzf it was easy to support both tools with the same code.

Although if this adds too much complexity, then I'm more than OK to do this on plugin side :)

[mateuszr]

hey!
Actually they are the same: -c and alternatively --cmd, are exactly the same that skim uses. Or I missed something?

[andreyorst]

hey!
Actually they are the same: -c and alternatively --cmd, are exactly the same that skim uses. Or I missed something?

There's also -i in skim. https://github.com/lotabout/skim#interactive-mode

Maybe it's not necessary though.

[junegunn]

I'm taking a different approach in #1750, which I believe is more extensible and generic. It doesn't introduce a new "mode", instead, it builds upon the existing features.