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fix(builtin.treesitter) Force eval treesitter #3449

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fix(builtin.treesitter) Force eval treesitter #3449

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21 changes: 17 additions & 4 deletions lua/telescope/builtin/__files.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -423,14 +423,20 @@ 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",
})
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
Expand All @@ -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",
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