From da3facb7eea92bd4082bb6ea12e0947580a63962 Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Thu, 8 Feb 2024 19:10:27 +0800
Subject: vim-patch:9.1.0083: Redrawing can be improved when deleting lines
 with 'number'

Problem:  Redrawing can be improved when inserting/deleting lines with 'number'.
Solution: Only redraw the number column of lines below changed lines.
          Add a test as this wasn't previously tested.
          (zeertzjq)

closes: vim/vim#13985

https://github.com/vim/vim/commit/ae07ebc04b0726e12b1af39d52e01d86ae79ef0a
---
 test/old/testdir/test_number.vim | 33 ++++++++++++++++++++++++++++-----
 1 file changed, 28 insertions(+), 5 deletions(-)

(limited to 'test/old/testdir')

diff --git a/test/old/testdir/test_number.vim b/test/old/testdir/test_number.vim
index 6ac3c4cfe4..b57c1ed2c5 100644
--- a/test/old/testdir/test_number.vim
+++ b/test/old/testdir/test_number.vim
@@ -146,8 +146,7 @@ func Test_number_with_linewrap1()
   call s:close_windows()
 endfunc
 
-" Pending: https://groups.google.com/forum/#!topic/vim_dev/tzNKP7EDWYI
-func XTest_number_with_linewrap2()
+func Test_number_with_linewrap2()
   call s:test_windows(3, 20)
   normal! 61ia
   setl number wrap
@@ -164,8 +163,7 @@ func XTest_number_with_linewrap2()
   call s:close_windows()
 endfunc
 
-" Pending: https://groups.google.com/forum/#!topic/vim_dev/tzNKP7EDWYI
-func XTest_number_with_linewrap3()
+func Test_number_with_linewrap3()
   call s:test_windows(4, 20)
   normal! 81ia
   setl number wrap
@@ -174,7 +172,7 @@ func XTest_number_with_linewrap3()
   call s:validate_cursor()
   let lines = s:screen_lines(1, 4)
   let expect = [
-\ "aaaaaaaa",
+\ "<<<aaaaa",
 \ "aaaaaaaa",
 \ "aaaaaaaa",
 \ "a       ",
@@ -349,6 +347,31 @@ func Test_relativenumber_callback()
   call StopVimInTerminal(buf)
 endfunc
 
+" Test that line numbers below inserted/deleted lines are updated.
+func Test_number_insert_delete_lines()
+  CheckScreendump
+
+  let lines =<< trim END
+      call setline(1, range(1, 7))
+      set number
+      call cursor(2, 1)
+  END
+  call writefile(lines, 'Xnumber_insert_delete_lines', 'D')
+
+  let buf = RunVimInTerminal('-S Xnumber_insert_delete_lines', #{rows: 8})
+  call VerifyScreenDump(buf, 'Test_number_insert_delete_lines_1', {})
+  call term_sendkeys(buf, "dd")
+  call VerifyScreenDump(buf, 'Test_number_insert_delete_lines_2', {})
+  call term_sendkeys(buf, "P")
+  call VerifyScreenDump(buf, 'Test_number_insert_delete_lines_1', {})
+  call term_sendkeys(buf, "2dd")
+  call VerifyScreenDump(buf, 'Test_number_insert_delete_lines_3', {})
+  call term_sendkeys(buf, "P")
+  call VerifyScreenDump(buf, 'Test_number_insert_delete_lines_1', {})
+
+  call StopVimInTerminal(buf)
+endfunc
+
 " Test for displaying line numbers with 'rightleft'
 func Test_number_rightleft()
   CheckFeature rightleft
-- 
cgit