Make completions scroll to top of list

[blink1073]

Fixes #1876.

[goanpeca]

Love this 👍

[ccordoba12]

This is really cool!! Thanks @blink1073!!

Could we also narrow down the completion list to only show those items that match the completion text?

[goanpeca]

How easy/hard would it be to make the code completion more attractive (like pycharm)... would it be too much work to have an icon for private methods... constants.. classes... methods, special python methods (__init__etc..)??

[ccordoba12]

That info is provided by Jedi (Unfortunately, I don't know if by Rope too). Maybe @blink1073 could submit a new PR implementing that too? ;-)

[goanpeca]

Please @blink1073, it would be something more aesthetic but would make the completion look so much better!!!

[blink1073]

@ccordoba12, counter proposal: what if I implemented fuzzy logic and only show the completions from the original list that contain the entered characters?

A quick look shows that we can access this from the rope completion proposals. Completions could be returned as (completion, type) tuples with associated icons. I don't mind implementing the logic, but I do not want to get into the icon business. I'll start another issue for discussion on that.

[ccordoba12]

@ccordoba12, counter proposal: what if I implemented fuzzy logic and only show the completions from the original list that contain the entered characters?

I don't like fuzzy logic that much, but it could be cool to have it.

But let's leave it for another PR. This one is simple enough and solves precisely what it wants to accomplish.