From 7e2b75760f1723c44bf69951dad2cb8da92aa213 Mon Sep 17 00:00:00 2001
From: zeertzjq <zeertzjq@outlook.com>
Date: Tue, 11 Mar 2025 06:54:17 +0800
Subject: vim-patch:9.1.1193: Unnecessary use of STRCAT() in au_event_disable()
 (#32829)

Problem:  Unnecessary use of STRCAT() in au_event_disable().  STRCAT()
          seeks to the end of new_ei, but here the end is already known.
Solution: Use STRCPY() and add p_ei_len to new_ei.  Also fix a typo in a
          comment.  Add a test that 'eventignore' works in :argdo
          (zeertzjq).

closes: vim/vim#16844

https://github.com/vim/vim/commit/969e11a18b145241dc0ab39fc1be7ed814655dfc

Cherry-pick p_ei_len from patch 9.1.0256.
---
 test/old/testdir/test_arglist.vim | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'test')

diff --git a/test/old/testdir/test_arglist.vim b/test/old/testdir/test_arglist.vim
index 952b121aed..9c4d4bb715 100644
--- a/test/old/testdir/test_arglist.vim
+++ b/test/old/testdir/test_arglist.vim
@@ -555,9 +555,34 @@ endfunc
 func Test_argdo()
   next! Xa.c Xb.c Xc.c
   new
+
+  let g:bufenter = 0
+  let g:bufleave = 0
+  autocmd BufEnter * let g:bufenter += 1
+  autocmd BufLeave * let g:bufleave += 1
+
+  let l = []
+  argdo call add(l, expand('%'))
+  call assert_equal(['Xa.c', 'Xb.c', 'Xc.c'], l)
+  call assert_equal(3, g:bufenter)
+  call assert_equal(3, g:bufleave)
+
+  let g:bufenter = 0
+  let g:bufleave = 0
+
+  set eventignore=BufEnter,BufLeave
   let l = []
   argdo call add(l, expand('%'))
   call assert_equal(['Xa.c', 'Xb.c', 'Xc.c'], l)
+  call assert_equal(0, g:bufenter)
+  call assert_equal(0, g:bufleave)
+  call assert_equal('BufEnter,BufLeave', &eventignore)
+  set eventignore&
+
+  autocmd! BufEnter
+  autocmd! BufLeave
+  unlet g:bufenter
+  unlet g:bufleave
   bwipe Xa.c Xb.c Xc.c
 endfunc
 
-- 
cgit