Update LSP sync patch.

16669.patch

@@ -1,19 +1,8 @@
-From 0500ace6e138c3fcbd15b951f6af76a45e80f0ab Mon Sep 17 00:00:00 2001
-From: Rishikesh Vaishnav <rishhvaishnav@gmail.com>
-Date: Wed, 15 Dec 2021 18:08:10 +0000
-Subject: [PATCH] fix(lsp): general fix/simplification of incremental sync
-
----
- runtime/lua/vim/lsp/sync.lua                  | 125 ++++----
- src/nvim/lua/stdlib.c                         |   4 +-
- .../plugin/lsp/incremental_sync_spec.lua      | 275 +++++++++++++++++-
- 3 files changed, 332 insertions(+), 72 deletions(-)
-
 diff --git a/runtime/lua/vim/lsp/sync.lua b/runtime/lua/vim/lsp/sync.lua
-index 5df2a4d144d2..ce3c8c1b2e5d 100644
+index 5df2a4d144d2..8d08d2763bdc 100644
 --- a/runtime/lua/vim/lsp/sync.lua
 +++ b/runtime/lua/vim/lsp/sync.lua
-@@ -93,30 +93,35 @@ end
+@@ -93,30 +93,38 @@ end
  -- utf-8 index and either the utf-16, or utf-32 index.
  ---@param line string the line to index into
  ---@param byte integer the byte idx
@@ -43,9 +32,11 @@ index 5df2a4d144d2..ce3c8c1b2e5d 100644
 -  if byte == 1 or #line == 0 then
 -    char = byte
 +
++  -- optimize for first byte case
++  if byte == 1 then
++    char = 1
    -- Called in the case of extending an empty line "" -> "a"
--  elseif byte == #line + 1 then
-+  if byte == #line + 1 then
+   elseif byte == #line + 1 then
      char = compute_line_length(line, offset_encoding) + 1
    else
 -    -- Modifying line, find the nearest utf codepoint
@@ -66,7 +57,7 @@ index 5df2a4d144d2..ce3c8c1b2e5d 100644
    return byte, char
  end
  
-@@ -157,18 +162,7 @@ local function compute_start_range(prev_lines, curr_lines, firstline, lastline,
+@@ -157,18 +165,7 @@ local function compute_start_range(prev_lines, curr_lines, firstline, lastline,
    end
  
    -- Convert byte to codepoint if applicable
@@ -86,7 +77,7 @@ index 5df2a4d144d2..ce3c8c1b2e5d 100644
  
    -- Return the start difference (shared for new and prev lines)
    return { line_idx = firstline, byte_idx = byte_idx, char_idx = char_idx }
-@@ -209,51 +203,48 @@ local function compute_end_range(prev_lines, curr_lines, start_range, firstline,
+@@ -209,51 +206,48 @@ local function compute_end_range(prev_lines, curr_lines, start_range, firstline,
    local prev_line_length = #prev_line
    local curr_line_length = #curr_line