patch 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.

closes: #16530

Signed-off-by: Luuk van Baal <luukvbaal@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

Author: luukvbaal

runtime/doc/autocmd.txt

@@ -1,4 +1,4 @@
-*autocmd.txt*   For Vim version 9.1.  Last change: 2024 Dec 04
+*autocmd.txt*   For Vim version 9.1.  Last change: 2025 Feb 08
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -1992,6 +1992,9 @@ To disable autocommands for some time use the 'eventignore' option.  Note that
 this may cause unexpected behavior, make sure you restore 'eventignore'
 afterwards, using a |:try| block with |:finally|.
 
+To disable autocmds indefinitely in a specific window use the 'eventignorewin'
+option.  This can only be used to ignore window and buffer related events.
+
 							*:noautocmd* *:noa*
 To disable autocommands for just one command use the ":noautocmd" command
 modifier.  This will set 'eventignore' to "all" for the duration of the

runtime/doc/options.txt

@@ -1,4 +1,4 @@
-*options.txt*	For Vim version 9.1.  Last change: 2025 Feb 01
+*options.txt*	For Vim version 9.1.  Last change: 2025 Feb 08
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -3283,6 +3283,13 @@ A jump table for the options with a short description can be found at |Q_op|.
 	Otherwise this is a comma-separated list of event names.  Example: >
 	    :set ei=WinEnter,WinLeave
 <
+						*'eventignorewin'* *'eiw'*
+'eventignorewin' 'eiw'	string	(default "")
+			window-local
+	Similar to 'eventignore' but applies to a particular window and its
+	buffers, for which window and buffer related autocommands can be
+	ignored indefinitely without affecting the global 'eventignore'.
+
 				 *'expandtab'* *'et'* *'noexpandtab'* *'noet'*
 'expandtab' 'et'	boolean	(default off)
 			local to buffer

runtime/doc/quickref.txt

@@ -1,4 +1,4 @@
-*quickref.txt*  For Vim version 9.1.  Last change: 2024 Nov 02
+*quickref.txt*  For Vim version 9.1.  Last change: 2025 Feb 08
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -698,6 +698,7 @@ Short explanation of each option:		*option-list*
 'errorformat'	  'efm'     description of the lines in the error file
 'esckeys'	  'ek'	    recognize function keys in Insert mode
 'eventignore'	  'ei'	    autocommand events that are ignored
+'eventignorewin'  'eiw'     autocommand events that are ignored in a window
 'expandtab'	  'et'	    use spaces when <Tab> is inserted
 'exrc'		  'ex'	    read .vimrc and .exrc in the current directory
 'fileencoding'	  'fenc'    file encoding for multibyte text

runtime/doc/tags

@@ -230,6 +230,7 @@ $quote	eval.txt	/*$quote*
 'ef'	options.txt	/*'ef'*
 'efm'	options.txt	/*'efm'*
 'ei'	options.txt	/*'ei'*
+'eiw'	options.txt	/*'eiw'*
 'ek'	options.txt	/*'ek'*
 'emo'	options.txt	/*'emo'*
 'emoji'	options.txt	/*'emoji'*
@@ -248,6 +249,7 @@ $quote	eval.txt	/*$quote*
 'esckeys'	options.txt	/*'esckeys'*
 'et'	options.txt	/*'et'*
 'eventignore'	options.txt	/*'eventignore'*
+'eventignorewin'	options.txt	/*'eventignorewin'*
 'ex'	options.txt	/*'ex'*
 'expandtab'	options.txt	/*'expandtab'*
 'exrc'	options.txt	/*'exrc'*

runtime/doc/version9.txt

@@ -1,4 +1,4 @@
-*version9.txt*  For Vim version 9.1.  Last change: 2025 Feb 01
+*version9.txt*  For Vim version 9.1.  Last change: 2025 Feb 08
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -41696,6 +41696,7 @@ Options: ~
 
 'completeitemalign'	Order of |complete-items| in Insert mode completion
 			popup
+'eventignorewin'	autocommand events that are ignored in a window
 'findfunc'		Vim function to obtain the results for a |:find|
 			command
 'messagesopt'		configure |:messages| and |hit-enter| prompt

runtime/optwin.vim

@@ -1,7 +1,7 @@
 " These commands create the option window.
 "
 " Maintainer:	The Vim Project <https://github.com/vim/vim>
-" Last Change:	2024 Dec 07
+" Last Change:	2025 Feb 08
 " Former Maintainer:	Bram Moolenaar <Bram@vim.org>
 
 " If there already is an option window, jump to that one.
@@ -1343,6 +1343,8 @@ call <SID>AddOption("virtualedit", gettext("when to use virtual editing: \"block
 call <SID>OptionG("ve", &ve)
 call <SID>AddOption("eventignore", gettext("list of autocommand events which are to be ignored"))
 call <SID>OptionG("ei", &ei)
+call <SID>AddOption("eventignorewin", gettext("list of autocommand events which are to be ignored in a window"))
+call <SID>OptionG("eiw", &eiw)
 call <SID>AddOption("loadplugins", gettext("load plugin scripts when starting up"))
 call <SID>BinOptionG("lpl", &lpl)
 call <SID>AddOption("exrc", gettext("enable reading .vimrc/.exrc/.gvimrc in the current directory"))

runtime/syntax/generator/gen_syntax_vim.vim

@@ -1,7 +1,7 @@
 " Vim syntax file generator
 " Language: Vim script
 " Maintainer: Hirohito Higashi (h_east)
-" Last Change: 2024 Feb 03
+" Last Change: 2025 Feb 08
 
 let s:keepcpo= &cpo
 set cpo&vim
@@ -378,14 +378,14 @@ function s:parse_vim_event(li)
 		new
 		exec 'read ' . file_name
 		norm! gg
-		exec '/^static keyvalue_T event_tab\[] = {$/+1;/^};$/-1yank'
+		exec '/^static keyvalue_T event_tab\[NUM_EVENTS] = {$/+1;/^};$/-1yank'
 		%delete _
 
 		put
 		g!/^\s*KEYVALUE_ENTRY(/d
 
 		for line in getline(1, line('$'))
-			let list = matchlist(line, '^\s*KEYVALUE_ENTRY(EVENT_\w\+,\s*"\(\w\+\)"')
+			let list = matchlist(line, '^\s*KEYVALUE_ENTRY(-\?EVENT_\w\+,\s*"\(\w\+\)"')
 			let item.name = list[1]
 			call add(a:li, copy(item))
 		endfor

runtime/syntax/vim.vim

@@ -2,7 +2,7 @@
 " Language:	   Vim script
 " Maintainer:	   Hirohito Higashi <h.east.727 ATMARK gmail.com>
 "	   Doug Kearns <dougkearns@gmail.com>
-" Last Change:	   2025 Feb 03
+" Last Change:	   2025 Feb 08
 " Former Maintainer: Charles E. Campbell
 
 " DO NOT CHANGE DIRECTLY.
@@ -42,12 +42,12 @@ syn keyword vimStdPlugin contained	Arguments Asm Break Cfilter Clear Continue Di
 " vimOptions are caught only when contained in a vimSet {{{2
 " GEN_SYN_VIM: vimOption normal, START_STR='syn keyword vimOption contained', END_STR='skipwhite nextgroup=vimSetEqual,vimSetMod'
 syn keyword vimOption contained al aleph ari allowrevins ambw ambiwidth arab arabic arshape arabicshape acd autochdir ai autoindent ar autoread asd autoshelldir aw autowrite awa autowriteall bg background bs backspace bk backup bkc backupcopy bdir backupdir bex backupext bsk backupskip bdlay balloondelay beval ballooneval bevalterm balloonevalterm bexpr balloonexpr bo belloff bin binary bomb brk breakat bri breakindent briopt breakindentopt bsdir browsedir bh bufhidden bl buflisted bt buftype cmp casemap cdh cdhome cd cdpath cedit ccv charconvert cin cindent cink cinkeys cino cinoptions cinsd cinscopedecls cinw cinwords cb clipboard ch cmdheight cwh cmdwinheight cc colorcolumn co columns com comments cms commentstring cp compatible cpt complete cfu completefunc skipwhite nextgroup=vimSetEqual,vimSetMod
-syn keyword vimOption contained cia completeitemalign cot completeopt cpp completepopup csl completeslash cocu concealcursor cole conceallevel cf confirm ci copyindent cpo cpoptions cm cryptmethod cspc cscopepathcomp csprg cscopeprg csqf cscopequickfix csre cscoperelative cst cscopetag csto cscopetagorder csverb cscopeverbose crb cursorbind cuc cursorcolumn cul cursorline culopt cursorlineopt debug def define deco delcombine dict dictionary diff dex diffexpr dip diffopt dg digraph dir directory dy display ead eadirection ed edcompatible emo emoji enc encoding eof endoffile eol endofline ea equalalways ep equalprg eb errorbells ef errorfile efm errorformat ek esckeys ei eventignore et expandtab ex exrc fenc fileencoding fencs fileencodings ff fileformat ffs fileformats skipwhite nextgroup=vimSetEqual,vimSetMod
-syn keyword vimOption contained fic fileignorecase ft filetype fcs fillchars ffu findfunc fixeol fixendofline fcl foldclose fdc foldcolumn fen foldenable fde foldexpr fdi foldignore fdl foldlevel fdls foldlevelstart fmr foldmarker fdm foldmethod fml foldminlines fdn foldnestmax fdo foldopen fdt foldtext fex formatexpr flp formatlistpat fo formatoptions fp formatprg fs fsync gd gdefault gfm grepformat gp grepprg gcr guicursor gfn guifont gfs guifontset gfw guifontwide ghr guiheadroom gli guiligatures go guioptions guipty gtl guitablabel gtt guitabtooltip hf helpfile hh helpheight hlg helplang hid hidden hl highlight hi history hk hkmap hkp hkmapp hls hlsearch icon iconstring ic ignorecase imaf imactivatefunc imak imactivatekey imc imcmdline imd imdisable imi iminsert skipwhite nextgroup=vimSetEqual,vimSetMod
-syn keyword vimOption contained ims imsearch imsf imstatusfunc imst imstyle inc include inex includeexpr is incsearch inde indentexpr indk indentkeys inf infercase im insertmode isf isfname isi isident isk iskeyword isp isprint js joinspaces jop jumpoptions key kmp keymap km keymodel kpc keyprotocol kp keywordprg lmap langmap lm langmenu lnr langnoremap lrm langremap ls laststatus lz lazyredraw lbr linebreak lines lsp linespace lisp lop lispoptions lw lispwords list lcs listchars lpl loadplugins luadll magic mef makeef menc makeencoding mp makeprg mps matchpairs mat matchtime mco maxcombine mfd maxfuncdepth mmd maxmapdepth mm maxmem mmp maxmempattern mmt maxmemtot mis menuitems mopt messagesopt msm mkspellmem ml modeline mle modelineexpr mls modelines ma modifiable skipwhite nextgroup=vimSetEqual,vimSetMod
-syn keyword vimOption contained mod modified more mouse mousef mousefocus mh mousehide mousem mousemodel mousemev mousemoveevent mouses mouseshape mouset mousetime mzq mzquantum mzschemedll mzschemegcdll nf nrformats nu number nuw numberwidth ofu omnifunc odev opendevice opfunc operatorfunc pp packpath para paragraphs paste pt pastetoggle pex patchexpr pm patchmode pa path perldll pi preserveindent pvh previewheight pvp previewpopup pvw previewwindow pdev printdevice penc printencoding pexpr printexpr pfn printfont pheader printheader pmbcs printmbcharset pmbfn printmbfont popt printoptions prompt ph pumheight pw pumwidth pythondll pythonhome pythonthreedll pythonthreehome pyx pyxversion qftf quickfixtextfunc qe quoteescape ro readonly rdt redrawtime re regexpengine skipwhite nextgroup=vimSetEqual,vimSetMod
-syn keyword vimOption contained rnu relativenumber remap rop renderoptions report rs restorescreen ri revins rl rightleft rlc rightleftcmd rubydll ru ruler ruf rulerformat rtp runtimepath scr scroll scb scrollbind scf scrollfocus sj scrolljump so scrolloff sbo scrollopt sect sections secure sel selection slm selectmode ssop sessionoptions sh shell shcf shellcmdflag sp shellpipe shq shellquote srr shellredir ssl shellslash stmp shelltemp st shelltype sxe shellxescape sxq shellxquote sr shiftround sw shiftwidth shm shortmess sn shortname sbr showbreak sc showcmd sloc showcmdloc sft showfulltag sm showmatch smd showmode stal showtabline ss sidescroll siso sidescrolloff scl signcolumn scs smartcase si smartindent sta smarttab sms smoothscroll sts softtabstop spell skipwhite nextgroup=vimSetEqual,vimSetMod
-syn keyword vimOption contained spc spellcapcheck spf spellfile spl spelllang spo spelloptions sps spellsuggest sb splitbelow spk splitkeep spr splitright sol startofline stl statusline su suffixes sua suffixesadd swf swapfile sws swapsync swb switchbuf smc synmaxcol syn syntax tcl tabclose tal tabline tpm tabpagemax ts tabstop tbs tagbsearch tc tagcase tfu tagfunc tl taglength tr tagrelative tag tags tgst tagstack tcldll term tbidi termbidi tenc termencoding tgc termguicolors twk termwinkey twsl termwinscroll tws termwinsize twt termwintype terse ta textauto tx textmode tw textwidth tsr thesaurus tsrfu thesaurusfunc top tildeop to timeout tm timeoutlen title titlelen titleold titlestring tb toolbar tbis toolbariconsize ttimeout ttm ttimeoutlen tbi ttybuiltin skipwhite nextgroup=vimSetEqual,vimSetMod
+syn keyword vimOption contained cia completeitemalign cot completeopt cpp completepopup csl completeslash cocu concealcursor cole conceallevel cf confirm ci copyindent cpo cpoptions cm cryptmethod cspc cscopepathcomp csprg cscopeprg csqf cscopequickfix csre cscoperelative cst cscopetag csto cscopetagorder csverb cscopeverbose crb cursorbind cuc cursorcolumn cul cursorline culopt cursorlineopt debug def define deco delcombine dict dictionary diff dex diffexpr dip diffopt dg digraph dir directory dy display ead eadirection ed edcompatible emo emoji enc encoding eof endoffile eol endofline ea equalalways ep equalprg eb errorbells ef errorfile efm errorformat ek esckeys ei eventignore eiw eventignorewin et expandtab ex exrc fenc fileencoding fencs fileencodings ff fileformat skipwhite nextgroup=vimSetEqual,vimSetMod
+syn keyword vimOption contained ffs fileformats fic fileignorecase ft filetype fcs fillchars ffu findfunc fixeol fixendofline fcl foldclose fdc foldcolumn fen foldenable fde foldexpr fdi foldignore fdl foldlevel fdls foldlevelstart fmr foldmarker fdm foldmethod fml foldminlines fdn foldnestmax fdo foldopen fdt foldtext fex formatexpr flp formatlistpat fo formatoptions fp formatprg fs fsync gd gdefault gfm grepformat gp grepprg gcr guicursor gfn guifont gfs guifontset gfw guifontwide ghr guiheadroom gli guiligatures go guioptions guipty gtl guitablabel gtt guitabtooltip hf helpfile hh helpheight hlg helplang hid hidden hl highlight hi history hk hkmap hkp hkmapp hls hlsearch icon iconstring ic ignorecase imaf imactivatefunc imak imactivatekey imc imcmdline imd imdisable skipwhite nextgroup=vimSetEqual,vimSetMod
+syn keyword vimOption contained imi iminsert ims imsearch imsf imstatusfunc imst imstyle inc include inex includeexpr is incsearch inde indentexpr indk indentkeys inf infercase im insertmode isf isfname isi isident isk iskeyword isp isprint js joinspaces jop jumpoptions key kmp keymap km keymodel kpc keyprotocol kp keywordprg lmap langmap lm langmenu lnr langnoremap lrm langremap ls laststatus lz lazyredraw lbr linebreak lines lsp linespace lisp lop lispoptions lw lispwords list lcs listchars lpl loadplugins luadll magic mef makeef menc makeencoding mp makeprg mps matchpairs mat matchtime mco maxcombine mfd maxfuncdepth mmd maxmapdepth mm maxmem mmp maxmempattern mmt maxmemtot mis menuitems mopt messagesopt msm mkspellmem ml modeline mle modelineexpr mls modelines skipwhite nextgroup=vimSetEqual,vimSetMod
+syn keyword vimOption contained ma modifiable mod modified more mouse mousef mousefocus mh mousehide mousem mousemodel mousemev mousemoveevent mouses mouseshape mouset mousetime mzq mzquantum mzschemedll mzschemegcdll nf nrformats nu number nuw numberwidth ofu omnifunc odev opendevice opfunc operatorfunc pp packpath para paragraphs paste pt pastetoggle pex patchexpr pm patchmode pa path perldll pi preserveindent pvh previewheight pvp previewpopup pvw previewwindow pdev printdevice penc printencoding pexpr printexpr pfn printfont pheader printheader pmbcs printmbcharset pmbfn printmbfont popt printoptions prompt ph pumheight pw pumwidth pythondll pythonhome pythonthreedll pythonthreehome pyx pyxversion qftf quickfixtextfunc qe quoteescape ro readonly rdt redrawtime skipwhite nextgroup=vimSetEqual,vimSetMod
+syn keyword vimOption contained re regexpengine rnu relativenumber remap rop renderoptions report rs restorescreen ri revins rl rightleft rlc rightleftcmd rubydll ru ruler ruf rulerformat rtp runtimepath scr scroll scb scrollbind scf scrollfocus sj scrolljump so scrolloff sbo scrollopt sect sections secure sel selection slm selectmode ssop sessionoptions sh shell shcf shellcmdflag sp shellpipe shq shellquote srr shellredir ssl shellslash stmp shelltemp st shelltype sxe shellxescape sxq shellxquote sr shiftround sw shiftwidth shm shortmess sn shortname sbr showbreak sc showcmd sloc showcmdloc sft showfulltag sm showmatch smd showmode stal showtabline ss sidescroll siso sidescrolloff scl signcolumn scs smartcase si smartindent sta smarttab sms smoothscroll sts softtabstop skipwhite nextgroup=vimSetEqual,vimSetMod
+syn keyword vimOption contained spell spc spellcapcheck spf spellfile spl spelllang spo spelloptions sps spellsuggest sb splitbelow spk splitkeep spr splitright sol startofline stl statusline su suffixes sua suffixesadd swf swapfile sws swapsync swb switchbuf smc synmaxcol syn syntax tcl tabclose tal tabline tpm tabpagemax ts tabstop tbs tagbsearch tc tagcase tfu tagfunc tl taglength tr tagrelative tag tags tgst tagstack tcldll term tbidi termbidi tenc termencoding tgc termguicolors twk termwinkey twsl termwinscroll tws termwinsize twt termwintype terse ta textauto tx textmode tw textwidth tsr thesaurus tsrfu thesaurusfunc top tildeop to timeout tm timeoutlen title titlelen titleold titlestring tb toolbar tbis toolbariconsize ttimeout ttm ttimeoutlen tbi ttybuiltin skipwhite nextgroup=vimSetEqual,vimSetMod
 syn keyword vimOption contained tf ttyfast ttym ttymouse tsl ttyscroll tty ttytype udir undodir udf undofile ul undolevels ur undoreload uc updatecount ut updatetime vsts varsofttabstop vts vartabstop vbs verbose vfile verbosefile vdir viewdir vop viewoptions vi viminfo vif viminfofile ve virtualedit vb visualbell warn wiv weirdinvert ww whichwrap wc wildchar wcm wildcharm wig wildignore wic wildignorecase wmnu wildmenu wim wildmode wop wildoptions wak winaltkeys wcr wincolor wi window wfb winfixbuf wfh winfixheight wfw winfixwidth wh winheight wmh winminheight wmw winminwidth winptydll wiw winwidth wrap wm wrapmargin ws wrapscan write wa writeany wb writebackup wd writedelay xtermcodes skipwhite nextgroup=vimSetEqual,vimSetMod
 
 " vimOptions: These are the turn-off setting variants {{{2