feat: v1 options menu (#133)

Still has a bunch of improvements that can be done, but wanted to merge in some of the related changes.

* options parser

* wip: vimoptions finder

* feat: pre-populate ex-command line with `:set foo=`

* use options current value when populating command line

* fix: use result.raw_value to store original option value

* .

* options: Continue work on option finder

* [WIP]: Tue 27 Oct 2020 10:34:09 PM EDT

* [WIP]: Mon 02 Nov 2020 08:20:13 PM EST

* [WIP]: Mon 02 Nov 2020 09:04:23 PM EST

Co-authored-by: TJ DeVries <devries.timothyj@gmail.com>

lua/telescope/builtin.lua

@@ -24,14 +24,13 @@ if 2 > vim.o.report then
 end
 
 
--- TODO: Give some bonus weight to files we've picked before
--- TODO: Give some bonus weight to oldfiles
-
 local actions = require('telescope.actions')
 local finders = require('telescope.finders')
+local log = require('telescope.log')
 local make_entry = require('telescope.make_entry')
-local previewers = require('telescope.previewers')
+local path = require('telescope.path')
 local pickers = require('telescope.pickers')
+local previewers = require('telescope.previewers')
 local sorters = require('telescope.sorters')
 local utils = require('telescope.utils')
 
@@ -46,11 +45,17 @@ local builtin = {}
 builtin.git_files = function(opts)
   opts = opts or {}
 
+  local show_untracked = utils.get_default(opts.show_untracked, true)
+
   if opts.cwd then
     opts.cwd = vim.fn.expand(opts.cwd)
   else
     --- Find root of git directory and remove trailing newline characters
-    opts.cwd = string.gsub(vim.fn.system("git rev-parse --show-toplevel"), '[\n\r]+', '')
+    opts.cwd = vim.fn.systemlist("git rev-parse --show-toplevel")[1]
+
+    if not vim.fn.isdirectory(opts.cwd) then
+      error("Not a working directory for git_files:", opts.cwd)
+    end
   end
 
   -- By creating the entry maker after the cwd options,
@@ -60,7 +65,7 @@ builtin.git_files = function(opts)
   pickers.new(opts, {
     prompt_title = 'Git File',
     finder = finders.new_oneshot_job(
-      { "git", "ls-tree", "--full-tree", "-r", "--name-only", "HEAD" },
+      { "git", "ls-files", "--exclude-standard", "--cached", show_untracked and "--others" },
       opts
     ),
     previewer = previewers.cat.new(opts),
@@ -412,6 +417,72 @@ builtin.command_history = function(opts)
   }):find()
 end
 
+builtin.vim_options = function(opts)
+  opts = opts or {}
+
+  -- Load vim options.
+  local vim_opts = loadfile(utils.data_directory() .. path.separator .. 'options' .. path.separator .. 'options.lua')().options
+
+  pickers.new(opts, {
+      prompt = 'options',
+      finder = finders.new_table {
+        results = vim_opts,
+        entry_maker = make_entry.gen_from_vimoptions(opts),
+      },
+      -- TODO: previewer for Vim options
+      -- previewer = previewers.help.new(opts),
+      sorter = sorters.get_fzy_sorter(),
+      attach_mappings = function(prompt_bufnr, map)
+        local edit_option = function()
+          local selection = actions.get_selected_entry(prompt_bufnr)
+          local esc = ""
+
+
+          if vim.fn.mode() == "i" then
+            -- TODO: don't make this local
+            esc = vim.api.nvim_replace_termcodes("<esc>", true, false, true)
+          end
+
+          -- TODO: Make this actually work.
+
+          -- actions.close(prompt_bufnr)
+          -- vim.api.nvim_win_set_var(vim.fn.nvim_get_current_win(), "telescope", 1)
+          -- print(prompt_bufnr)
+          -- print(vim.fn.bufnr())
+          -- vim.cmd([[ autocmd BufEnter <buffer> ++nested ++once startinsert!]])
+          -- print(vim.fn.winheight(0))
+
+          -- local prompt_winnr = vim.fn.getbufinfo(prompt_bufnr)[1].windows[1]
+          -- print(prompt_winnr)
+
+          -- local float_opts = {}
+          -- float_opts.relative = "editor"
+          -- float_opts.anchor = "sw"
+          -- float_opts.focusable = false
+          -- float_opts.style = "minimal"
+          -- float_opts.row = vim.api.nvim_get_option("lines") - 2 -- TODO: include `cmdheight` and `laststatus` in this calculation
+          -- float_opts.col = 2
+          -- float_opts.height = 10
+          -- float_opts.width = string.len(selection.last_set_from)+15
+          -- local buf = vim.fn.nvim_create_buf(false, true)
+          -- vim.fn.nvim_buf_set_lines(buf, 0, 0, false, {"default value: abcdef", "last set from: " .. selection.last_set_from})
+          -- local status_win = vim.fn.nvim_open_win(buf, false, float_opts)
+          -- -- vim.api.nvim_win_set_option(status_win, "winblend", 100)
+          -- vim.api.nvim_win_set_option(status_win, "winhl", "Normal:PmenuSel")
+          -- -- vim.api.nvim_set_current_win(status_win)
+          -- vim.cmd[[redraw!]]
+          -- vim.cmd("autocmd CmdLineLeave : ++once echom 'beep'")
+          vim.api.nvim_feedkeys(string.format("%s:set %s=%s", esc, selection.name, selection.current_value), "m", true)
+        end
+
+        map('i', '<CR>', edit_option)
+        map('n', '<CR>', edit_option)
+
+        return true
+      end
+    }):find()
+end
+
 builtin.help_tags = function(opts)
   opts = opts or {}