From ff039bb024ca0a8753c6591fa8cb98312090f739 Mon Sep 17 00:00:00 2001
From: Volodymyr Chernetskyi <19735328+chernetskyi@users.noreply.github.com>
Date: Tue, 15 Sep 2026 14:53:40 +0200
Subject: perf(hightlight): compute only bounds for non-blockwise highlights

Problem:
vim.hl.range() computes a segment for every selected line, then discards
all but the outer endpoints for characterwise and linewise highlights.
This makes highlighting large yanks and puts unnecessarily expensive.

Solution:
Use getregionpos() with bounds=true for these highlights. Also use bounds
in the keymap example that only needs the first and last selected lines.

AI-assisted
---
 runtime/lua/vim/keymap.lua | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'runtime/lua/vim/keymap.lua')

diff --git a/runtime/lua/vim/keymap.lua b/runtime/lua/vim/keymap.lua
index 7451f42ad4..061d3340fe 100644
--- a/runtime/lua/vim/keymap.lua
+++ b/runtime/lua/vim/keymap.lua
@@ -39,9 +39,10 @@ local keymap = {}
 ---     type = 'v',
 ---     exclusive = false,
 ---     eol = false,
+---     bounds = true,
 ---   })
 ---   local line1 = region[1][1][2]
----   local line2 = region[#region][1][2]
+---   local line2 = region[1][2][2]
 ---   vim.print({ line1, line2 })
 --- end)
 ---
-- 
cgit