From 1d40ab5ccda6be3680fd809d34d93366b11c4ef8 Mon Sep 17 00:00:00 2001
From: Simon Hauser <Simon-Hauser@outlook.de>
Date: Tue, 29 Dec 2020 21:05:59 +0100
Subject: feat: All buffer previewers are now async and more config options
 (#354)

Configure preview window with:
autocmd User TelescopePreviewerLoaded setlocal wrap
autocmd User TelescopePreviewerLoaded setlocal number

file_maker example: Use regex highlighting for certain filetype like `*min.js` because they slow
down things with treesitter highlighter. Just a snippet for tests. We will do an extension :)

local previewers = require('telescope.previewers')
local putils = require('telescope.previewers.utils')
local pfiletype = require('plenary.filetype')

local _bad = { '.*%.min%.js' }
local bad_files = function(filepath)
  for _, v in ipairs(_bad) do
    if filepath:match(v) then
      return true
    end
  end

  return false
end

local new_maker = function(filepath, bufnr, bufname, use_ft_detect, callback)
  if use_ft_detect == nil then use_ft_detect = true end

  if bad_files(filepath) then
    previewers.buffer_previewer_maker(filepath, bufnr, bufname, false, callback)
    local ft = pfiletype.detect(filepath)
    putils.regex_highlighter(bufnr, ft)
  else
    previewers.buffer_previewer_maker(filepath, bufnr, bufname, use_ft_detect, callback)
  end
end

require('telescope').setup {
  defaults = {
    buffer_previewer_maker = new_maker,
  }
}
---
 lua/telescope/config.lua | 1 +
 1 file changed, 1 insertion(+)

(limited to 'lua/telescope/config.lua')

diff --git a/lua/telescope/config.lua b/lua/telescope/config.lua
index de01fbd..eb527eb 100644
--- a/lua/telescope/config.lua
+++ b/lua/telescope/config.lua
@@ -96,6 +96,7 @@ function config.set_defaults(defaults)
   set("file_previewer", function(...) return require('telescope.previewers').cat.new(...) end)
   set("grep_previewer", function(...) return require('telescope.previewers').vimgrep.new(...) end)
   set("qflist_previewer", function(...) return require('telescope.previewers').qflist.new(...) end)
+  set("buffer_previewer_maker", function(...) return require('telescope.previewers').buffer_previewer_maker(...) end)
 end
 
 function config.clear_defaults()
-- 
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