Telescope Preview

[semi710]

How to enable this to work in preview window of other programs like telescope

[jheroy]

Any progress?

[karb94]

Planned but not much progress yet

[karb94]

Unfortunately, for this to work out of the box with the default telescope buffer previewers I need Telescope to allow Neoscroll to replace their default scroll_fn() function. I opened a PR for this purpose.

The scroll_fn() function can be passed to custom previewers but not to the default ones so without this PR I can only create custom previewers with smooth scrolling but I doubt many people would use even if they are otherwise identical to the default ones. Here is a working example:

local builtin = require("telescope.builtin")
local previewers = require("telescope.previewers")
local from_entry = require("telescope.from_entry")
local conf = require("telescope.config").values
local neoscroll = require('neoscroll')

local my_previewer = function(opts)
  return previewers.new_buffer_previewer({
    scroll_fn = neoscroll.telescope_scroll_fn,
    define_preview = function(self, entry)
      local p = from_entry.path(entry, true, false)
      if p == nil or p == "" then
        return
      end
      conf.buffer_previewer_maker(p, self.state.bufnr, {
        bufname = self.state.bufname,
        winid = self.state.winid,
        preview = opts.preview,
        file_encoding = opts.file_encoding,
      })
    end,
  })
end

local function my_picker(opts)
  local opts = opts or {}
  opts.previewer = my_previewer(opts)
  builtin.buffers(opts)
end

my_picker()