Support set footer in preview window.

[gh-liu]

Is your feature request related to a problem? Please describe. Show full file path in the footer, or entry which does not contain file path but have buffer preview, like help_tags.

Describe the solution you'd like I do not know, I have tried hook of preview, but did not work.

Describe alternatives you've considered .

Additional context .

[jamestrew]

See related/duplicate: https://github.com/nvim-telescope/telescope.nvim/issues/2704

It's possible with custom configuration as suggested in the comment of the issue above but we're not in the position to add footers to the picker windows any time soon.