New layout for outline view

[chemzqm]

Is your feature request related to a problem? Please describe.

Something like tagbar's replace the one of denite coc-symbols.

[liuchengxu]

Actually I have an unpublished plugin doing the exact thing. It's perfectly suitable for the data with hierarchical structure. I started this plugin with an intention of replacing tagbar since I'm not satisfied with it recently.

It utilizes many modern API(async, timer etc) and takes care of lots of details to obtain a decent user experience. But it's not stable yet. When it's ready, I'm happy to add coc-symbols support as well.

[chemzqm]

@liuchengxu looking forward to your extension.

I'm not going to add this in coc.nvim itself, but maybe use a gui to render outline view for easier navigation.

[liuchengxu]

Hello, I have published my plugin: vista.vim, which could provide a tagbar like viewer for coc.

Open the vista siderbar supported by coc via :Vista coc:

I use coc-rls in the screenshot above.

For more usage, please see the README of vista.vim.