feat(options): add 'eventignorewin' (#32152)

vim-patch:partial:9.1.1084: Unable to persistently ignore events in a window and its buffers

Problem:  Unable to persistently ignore events in a window and its buffers.
Solution: Add 'eventignorewin' option to ignore events in a window and buffer
          (Luuk van Baal)

Add the window-local 'eventignorewin' option that is analogous to
'eventignore', but applies to a certain window and its buffers. Identify
events that should be allowed in 'eventignorewin', adapt "auto_event"
and "event_tab" to encode this information. Window context is not passed
onto apply_autocmds_group(), and when to ignore an event is a bit
ambiguous when "buf" is not "curbuf", rather than a large refactor, only
ignore an event when all windows into "buf" are ignoring the event.

https://github.com/vim/vim/commit/b7147f8236c962cd74d1ce028d9106f1c449ea6c

vim-patch:9.1.1102: tests: Test_WinScrolled_Resized_eiw() uses wrong filename

Problem:  tests: Test_WinScrolled_Resized_eiw() uses wrong filename
          (Luuk van Baal, after v9.1.1084)
Solution: Rename the filename to something more unique

https://github.com/vim/vim/commit/bfc7719e48ffc365ee0a1bd1888120d26b6365f0

4 files changed, 115 insertions, 0 deletions

diff --git a/test/functional/legacy/autocmd_spec.lua b/test/functional/legacy/autocmd_spec.lua
index 4d82da6312..1071776b68 100644
--- a/test/functional/legacy/autocmd_spec.lua
+++ b/test/functional/legacy/autocmd_spec.lua
@@ -1,5 +1,6 @@
 local t = require('test.testutil')
 local n = require('test.functional.testnvim')()
+local Screen = require('test.functional.ui.screen')
 
 local clear = n.clear
 local write_file = t.write_file
@@ -40,3 +41,53 @@ it('no E440 in quickfix window when autocommand invalidates undo', function()
   feed('G')
   eq('', api.nvim_get_vvar('errmsg'))
 end)
+
+-- oldtest: Test_WinScrolled_Resized_eiw()
+it('WinScrolled and WinResized events can be ignored in a window', function()
+  local screen = Screen.new()
+  n.exec([[
+    call setline(1, ['foo']->repeat(32))
+    set eventignorewin=WinScrolled,WinResized
+    split
+    let [g:afile,g:resized,g:scrolled] = ['none',0,0]
+    au WinScrolled * let [g:afile,g:scrolled] = [expand('<afile>'),g:scrolled+1]
+    au WinResized * let [g:afile,g:resized] = [expand('<afile>'),g:resized+1]
+  ]])
+  feed('<C-W>-')
+  screen:expect([[
+    ^foo                                                  |
+    foo                                                  |*4
+    {3:[No Name] [+]                                        }|
+    foo                                                  |*6
+    {2:[No Name] [+]                                        }|
+                                                         |
+  ]])
+  feed(':echo g:afile g:resized g:scrolled<CR>')
+  screen:expect({ any = 'none 0 0.*' })
+  feed('G')
+  screen:expect([[
+    foo                                                  |*4
+    ^foo                                                  |
+    {3:[No Name] [+]                                        }|
+    foo                                                  |*6
+    {2:[No Name] [+]                                        }|
+    none 0 0                                             |
+  ]])
+  feed('gg')
+  screen:expect([[
+    ^foo                                                  |
+    foo                                                  |*4
+    {3:[No Name] [+]                                        }|
+    foo                                                  |*6
+    {2:[No Name] [+]                                        }|
+    none 0 0                                             |
+  ]])
+  feed(':echo g:afile g:resized g:scrolled')
+  screen:expect({ any = ':echo g:afile g:resized g:scrolled.*' })
+  feed('<CR>')
+  screen:expect({ any = 'none 0 0.*' })
+  feed(':set eventignorewin=<CR><C-W>w<C-W>+')
+  screen:expect({ any = ':set eventignorewin=.*' })
+  feed(':echo win_getid() g:afile g:resized g:scrolled<CR>')
+  screen:expect({ any = '1000 1001 1 1.*' })
+end)
diff --git a/test/old/testdir/gen_opt_test.vim b/test/old/testdir/gen_opt_test.vim
index f12ce8c7c4..64876ce318 100644
--- a/test/old/testdir/gen_opt_test.vim
+++ b/test/old/testdir/gen_opt_test.vim
@@ -220,6 +220,8 @@ let test_values = {
       "\ 'encoding': [['latin1'], ['xxx', '']],
       \ 'eventignore': [['', 'WinEnter', 'WinLeave,winenter', 'all,WinEnter'],
       \		['xxx']],
+      \ 'eventignorewin': [['', 'WinEnter', 'WinLeave,winenter', 'all,WinEnter'],
+      \		['xxx', 'WinNew']],
       \ 'fileencoding': [['', 'latin1', 'xxx'], []],
       \ 'fileformat': [['dos', 'unix', 'mac'], ['xxx']],
       \ 'fileformats': [['', 'dos', 'dos,unix'], ['xxx']],
diff --git a/test/old/testdir/test_autocmd.vim b/test/old/testdir/test_autocmd.vim
index d5f7c928de..701b0a17a4 100644
--- a/test/old/testdir/test_autocmd.vim
+++ b/test/old/testdir/test_autocmd.vim
@@ -4205,4 +4205,64 @@ func Test_OptionSet_cmdheight()
   set cmdheight& mouse& laststatus&
 endfunc
 
+func Test_eventignorewin()
+  defer CleanUpTestAuGroup()
+  augroup testing
+    au WinEnter * :call add(g:evs, ["WinEnter", expand("<afile>")])
+    au WinLeave * :call add(g:evs, ["WinLeave", expand("<afile>")])
+    au BufWinEnter * :call add(g:evs, ["BufWinEnter", expand("<afile>")])
+  augroup END
+
+  let g:evs = []
+  set eventignorewin=WinLeave,WinEnter
+  split foo
+  call assert_equal([['BufWinEnter', 'foo']], g:evs)
+  set eventignorewin=all
+  edit bar
+  call assert_equal([['BufWinEnter', 'foo']], g:evs)
+  set eventignorewin=
+  wincmd w
+  call assert_equal([['BufWinEnter', 'foo'], ['WinLeave', 'bar']], g:evs)
+
+  only!
+  %bwipe!
+  set eventignorewin&
+  unlet g:evs
+endfunc
+
+func Test_WinScrolled_Resized_eiw()
+  CheckRunVimInTerminal
+
+  let lines =<< trim END
+    call setline(1, ['foo']->repeat(32))
+    set eventignorewin=WinScrolled,WinResized
+    split
+    let [g:afile,g:resized,g:scrolled] = ['none',0,0]
+    au WinScrolled * let [g:afile,g:scrolled] = [expand('<afile>'),g:scrolled+1]
+    au WinResized * let [g:afile,g:resized] = [expand('<afile>'),g:resized+1]
+  END
+  call writefile(lines, 'Xtest_winscrolled_eiw', 'D')
+  let buf = RunVimInTerminal('-S Xtest_winscrolled_eiw', {'rows': 10})
+
+  " Both windows are ignoring resize events
+  call term_sendkeys(buf, "\<C-W>-")
+  call TermWait(buf)
+  call term_sendkeys(buf, ":echo g:afile g:resized g:scrolled\<CR>")
+  call WaitForAssert({-> assert_equal('none 0 0', term_getline(buf, 10))}, 1000)
+
+  " And scroll events
+  call term_sendkeys(buf, "Ggg")
+  call TermWait(buf)
+  call term_sendkeys(buf, ":echo g:afile g:resized g:scrolled\<CR>")
+  call WaitForAssert({-> assert_equal('none 0 0', term_getline(buf, 10))}, 1000)
+
+  " Un-ignore events in second window, make first window current and resize
+  call term_sendkeys(buf, ":set eventignorewin=\<CR>\<C-W>w\<C-W>+")
+  call TermWait(buf)
+  call term_sendkeys(buf, ":echo win_getid() g:afile g:resized g:scrolled\<CR>")
+  call WaitForAssert({-> assert_equal('1000 1001 1 1', term_getline(buf, 10))}, 1000)
+
+  call StopVimInTerminal(buf)
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/test/old/testdir/test_options.vim b/test/old/testdir/test_options.vim
index 2479f0ca51..ce2d9ba05a 100644
--- a/test/old/testdir/test_options.vim
+++ b/test/old/testdir/test_options.vim
@@ -589,6 +589,7 @@ func Test_set_completion_string_values()
 
   " Other string options that queries the system rather than fixed enum names
   call assert_equal(['all', 'BufAdd'], getcompletion('set eventignore=', 'cmdline')[0:1])
+  call assert_equal(['WinLeave', 'WinResized', 'WinScrolled'], getcompletion('set eiw=', 'cmdline')[-3:-1])
   call assert_equal('latin1', getcompletion('set fileencodings=', 'cmdline')[1])
   " call assert_equal('top', getcompletion('set printoptions=', 'cmdline')[0])
   " call assert_equal('SpecialKey', getcompletion('set wincolor=', 'cmdline')[0])
@@ -2506,6 +2507,7 @@ func Test_string_option_revert_on_failure()
         \ ['eadirection', 'hor', 'a123'],
         \ ['encoding', 'utf-8', 'a123'],
         \ ['eventignore', 'TextYankPost', 'a123'],
+        \ ['eventignorewin', 'WinScrolled', 'a123'],
         \ ['fileencoding', 'utf-8', 'a123,'],
         \ ['fileformat', 'mac', 'a123'],
         \ ['fileformats', 'mac', 'a123'],