From 67056529281efabb41050b9840ce5649a7e6e7a3 Mon Sep 17 00:00:00 2001
From: rover <pathfinder2013@126.com>
Date: Sun, 1 Jan 2017 21:14:50 +0800
Subject: vim-patch:7.4.2019

Problem:    When ignoring case utf_fold() may consume a lot of time.
Solution:   Optimize for ASCII.

https://github.com/vim/vim/commit/c4a927ca8dc383190d5df2cacd3f966698b6190c
---
 src/nvim/mbyte.c   | 4 ++++
 src/nvim/version.c | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/nvim/mbyte.c b/src/nvim/mbyte.c
index 2ecd86974e..e8b1131767 100644
--- a/src/nvim/mbyte.c
+++ b/src/nvim/mbyte.c
@@ -1315,6 +1315,10 @@ static int utf_convert(int a, const convertStruct *const table, size_t n_items)
  */
 int utf_fold(int a)
 {
+  if (a < 0x80) {
+    // be fast for ASCII
+    return a >= 0x41 && a <= 0x5a ? a + 32 : a;
+  }
   return utf_convert(a, foldCase, ARRAY_SIZE(foldCase));
 }
 
diff --git a/src/nvim/version.c b/src/nvim/version.c
index be17b6775a..9ad40cddd2 100644
--- a/src/nvim/version.c
+++ b/src/nvim/version.c
@@ -421,7 +421,7 @@ static int included_patches[] = {
   // 2022,
   // 2021,
   // 2020 NA
-  // 2019,
+  2019,
   // 2018,
   // 2017,
   // 2016 NA
-- 
cgit