From 99a89934d0ddf96fa2e646065eb9f3c089551e8e Mon Sep 17 00:00:00 2001
From: juliancoffee <lightdarkdaughter@gmail.com>
Date: Thu, 17 Apr 2025 21:21:29 +0300
Subject: [PATCH] Force eval treesitter

+ Actually display the errors
---
 lua/telescope/builtin/__files.lua | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/lua/telescope/builtin/__files.lua b/lua/telescope/builtin/__files.lua
index 27b8d1c927..d0f7636de8 100644
--- a/lua/telescope/builtin/__files.lua
+++ b/lua/telescope/builtin/__files.lua
@@ -423,7 +423,8 @@ files.treesitter = function(opts)
   end
 
   local parsers = require "nvim-treesitter.parsers"
-  if not parsers.has_parser(parsers.get_buf_lang(opts.bufnr)) then
+  local lang = parsers.get_buf_lang(opts.bufnr)
+  if not parsers.has_parser(lang) then
     utils.notify("builtin.treesitter", {
       msg = "No parser for the current buffer",
       level = "ERROR",
@@ -431,6 +432,11 @@ files.treesitter = function(opts)
     return
   end
 
+  -- force evaluation, don't wait for it to lazily load
+  local parser = vim.treesitter.get_parser(opts.bufnr, lang)
+  ---@diagnostic disable-next-line: need-check-nil
+  parser:parse()
+
   local ts_locals = require "nvim-treesitter.locals"
   local results = {}
   for _, definition in ipairs(ts_locals.get_definitions(opts.bufnr)) do
@@ -441,16 +447,23 @@ files.treesitter = function(opts)
     end
   end
 
-  results = utils.filter_symbols(results, opts)
   if vim.tbl_isempty(results) then
-    -- error message already printed in `utils.filter_symbols`
+    utils.notify("builtin.treesitter", {
+      msg = "Parser provided no results",
+      level = "ERROR",
+    })
     return
   end
 
+  results = utils.filter_symbols(results, opts)
+
   if vim.tbl_isempty(results) then
+    utils.notify("builtin.treesitter", {
+      msg = "Parser gave results, but we filtered them all away",
+      level = "ERROR",
+    })
     return
   end
-
   pickers
     .new(opts, {
       prompt_title = "Treesitter Symbols",