feat/hack: Add builtin.builtin

lua/telescope/builtin.lua

@@ -152,7 +152,7 @@ builtin.oldfiles = function(opts)
     finder = finders.new_table(vim.tbl_filter(function(val)
       return 0 ~= vim.fn.filereadable(val)
     end, vim.v.oldfiles)),
-    sorter = sorters.get_norcalli_sorter(),
+    sorter = sorters.get_fuzzy_file(),
     previewer = previewers.cat,
   }):find()
 end
@@ -178,4 +178,34 @@ builtin.command_history = function(opts)
   }):find()
 end
 
+-- TODO: What the heck should we do for accepting this.
+--  vim.fn.setreg("+", "nnoremap $TODO :lua require('telescope.builtin').<whatever>()<CR>")
+-- TODO: Can we just do the names instead?
+builtin.builtin = function(opts)
+  local objs = {}
+
+  for k, v in pairs(builtin) do
+    local debug_info = debug.getinfo(v)
+
+    table.insert(objs, {
+      vimgrep_str = k,
+      filename = string.sub(debug_info.source, 2),
+      lnum = debug_info.linedefined,
+      col = 0,
+
+      start = debug_info.linedefined,
+      finish = debug_info.lastlinedefined,
+    })
+  end
+
+  local entries = utils.quickfix_items_to_entries(objs)
+
+  pickers.new(opts, {
+    prompt    = 'Telescope Builtin',
+    finder    = finders.new_table(entries),
+    previewer = previewers.qflist,
+    sorter    = sorters.get_norcalli_sorter(),
+  }):find()
+end
+
 return builtin

lua/telescope/previewers.lua

@@ -193,7 +193,7 @@ previewers.qflist = previewers.new {
   setup = function()
     local command_string = "cat %s"
     if vim.fn.executable("bat") then
-      command_string = "bat %s --highlight-line %s -r %s:%s"
+      command_string = "bat %s --highlight-line %s -r %s:%s" .. bat_options
     end
 
     return {
@@ -209,9 +209,15 @@ previewers.qflist = previewers.new {
     local filename = entry.value.filename
     local lnum = entry.value.lnum
 
+    local start, finish
+    if entry.start and entry.finish then
+      start = entry.start
+      finish = entry.finish
+    else
       local context = math.floor(height / 2)
-    local start = math.max(0, lnum - context)
+      start = math.max(0, lnum - context)
-    local finish = lnum + context
+      finish = lnum + context
+    end
 
     vim.api.nvim_win_set_buf(status.preview_win, bufnr)
 

lua/telescope/sorters.lua

@@ -179,15 +179,13 @@ sorters.get_fuzzy_file = function(opts)
         tail_modifier = 2
       end
 
-      -- TODO: Copied from ashkan.
       local denominator = (
         (10 * match_count / #prompt_lower_ngrams)
         -- biases for shorter strings
-        -- TODO(ashkan): this can bias towards repeated finds of the same
-        -- subpattern with overlapping_ngrams
         + 3 * match_count * ngram_len / #line
         + consecutive_matches
         + N / (contains_string or (2 * #line))
+
         -- + 30/(c1 or 2*N)
 
         -- TODO: It might be possible that this too strongly correlates,

lua/telescope/utils.lua

@@ -51,9 +51,9 @@ utils.quickfix_items_to_entries = function(locations)
   local results = {}
 
   for _, entry in ipairs(locations) do
-    local vimgrep_str = string.format(
+    local vimgrep_str = entry.vimgrep_str or string.format(
       "%s:%s:%s: %s",
-      vim.fn.fnamemodify(entry.filename, ":."),
+      vim.fn.fnamemodify(entry.display_filename or entry.filename, ":."),
       entry.lnum,
       entry.col,
       entry.text
@@ -64,6 +64,9 @@ utils.quickfix_items_to_entries = function(locations)
       value = entry,
       ordinal = vimgrep_str,
       display = vimgrep_str,
+
+      start = entry.start,
+      finish = entry.finish,
     })
   end