From 37dc9233a473dd6c3f54456ef9994d8f77c80211 Mon Sep 17 00:00:00 2001
From: Tristan Knight <admin@snappeh.com>
Date: Sat, 26 Oct 2024 15:33:10 +0100
Subject: [PATCH] fix: add shim for vim.lsp.util._str_byteindex() (#3338)

Will be removed in Nvim 0.11: https://github.com/neovim/neovim/pull/30915
---
 lua/telescope/builtin/__lsp.lua |  2 +-
 lua/telescope/utils.lua         | 12 ++++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/lua/telescope/builtin/__lsp.lua b/lua/telescope/builtin/__lsp.lua
index 662a6af..af79bcb 100644
--- a/lua/telescope/builtin/__lsp.lua
+++ b/lua/telescope/builtin/__lsp.lua
@@ -105,7 +105,7 @@ end
 ---@return lsp.Location
 local function item_to_location(item, offset_encoding)
   local line = item.lnum - 1
-  local character = vim.lsp.util._str_utfindex_enc(item.text, item.col, offset_encoding) - 1
+  local character = utils.str_byteindex(item.text, item.col, offset_encoding or "utf-16") - 1
   local uri
   if utils.is_uri(item.filename) then
     uri = item.filename
diff --git a/lua/telescope/utils.lua b/lua/telescope/utils.lua
index 145b7f3..d20dbbe 100644
--- a/lua/telescope/utils.lua
+++ b/lua/telescope/utils.lua
@@ -17,6 +17,18 @@ local utils = {}
 
 utils.iswin = vim.loop.os_uname().sysname == "Windows_NT"
 
+---@param s string
+---@param i number
+---@param encoding "utf-8" | "utf-16" | "utf-32"
+---@return integer
+utils.str_byteindex = function(s, i, encoding)
+  if vim.fn.has "nvim-0.11" == 1 then
+    return vim.str_byteindex(s, encoding, i, false)
+  else
+    return vim.lsp.util._str_byteindex_enc(s, i, encoding)
+  end
+end
+
 --TODO(clason): Remove when dropping support for Nvim 0.9
 utils.islist = vim.fn.has "nvim-0.10" == 1 and vim.islist or vim.tbl_islist
 local flatten = function(t)