feat: add some new items and make mappings easier

media/demo_script.lua

@@ -0,0 +1,47 @@
+local finders = require('telescope.finders')
+local previewers = require('telescope.previewers')
+local pickers = require('telescope.pickers')
+local sorters = require('telescope.sorters')
+
+-- Get all the items from v:oldfiles that are valid files
+local valid_oldfiles = vim.tbl_filter(function(val)
+  return 0 ~= vim.fn.filereadable(val)
+end, vim.v.oldfiles)
+
+-- print(vim.inspect(valid_oldfiles))
+-- => {
+--      "/home/tj/blah.txt",
+--      "/home/tj/another_dir/file.py",
+--      ...
+-- }
+
+-- Create a finder from a Lua list.
+local oldfiles_finder = finders.new_table(valid_oldfiles)
+
+-- Get a pre-defined sorter.
+--  Sorters return a "score" for each "Entry" found by a finder.
+--
+-- This sorter is optimized to best find files in a fuzzy manner.
+local oldfiles_sorter = sorters.get_fuzzy_file()
+
+-- Get a pre-defined previewer.
+--  Previewers take the currently selected entry,
+--  and put a preview of it in a floating window
+local oldfiles_previewer = previewers.cat
+
+-- Create and run a Picker.
+--  Pickers are the main entry point to telescope.
+--  They manage the interactions between:
+--      Finder,
+--      Sorter,
+--      Previewer
+--
+--  And provide the UI for the user.
+pickers.new {
+  prompt = 'Oldfiles',
+  finder = oldfiles_finder,
+  sorter = oldfiles_sorter,
+  previewer = oldfiles_previewer,
+}:find()
+
+