Support Autocompletion

[odnoletkov]

It would be great to Tab-complete possible paths on the command line. I had a quick look at the implementation and it seems to be a rather hard feature to add though.

[mogelbrod]

Tab completion would be cool! It requires additional complexity in terms of creating and caching a potentially large tree structure in Vim, something I'm sure will increase the already too lengthy execution time.

I haven't dived into custom completions in Vim yet so I can't promise this anytime soon, but feel free to take a stab at it - even a non-working snippet can be helpful if I end up implementing it myself 👍