Merge remote-tracking branch 'upstream/master' into aucmd_textputpostaucmd_textputpost

97 files changed, 1142 insertions, 359 deletions

diff --git a/runtime/ftplugin/aap.vim b/runtime/ftplugin/aap.vim
index b5065e5157..df839c99ae 100644
--- a/runtime/ftplugin/aap.vim
+++ b/runtime/ftplugin/aap.vim
@@ -1,7 +1,8 @@
 " Vim filetype plugin file
 " Language:	Aap recipe
-" Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last Change:	2021 Nov 14
+" Maintainer:	The Vim Project <https://github.com/vim/vim>
+" Last Change:	2023 Aug 10
+" Former Maintainer:	Bram Moolenaar <Bram@vim.org>
 
 " Only do this when not done yet for this buffer
 if exists("b:did_ftplugin")
diff --git a/runtime/ftplugin/abap.vim b/runtime/ftplugin/abap.vim
index 956b002ecd..61db8093fb 100644
--- a/runtime/ftplugin/abap.vim
+++ b/runtime/ftplugin/abap.vim
@@ -3,6 +3,7 @@
 " Author:	Steven Oliver <oliver.steven@gmail.com>
 " Copyright:	Copyright (c) 2013 Steven Oliver
 " License:	You may redistribute this under the same terms as Vim itself
+" Last Change:  2023 Aug 28 by Vim Project (undo_ftplugin)
 " --------------------------------------------------------------------------
 
 " Only do this when not done yet for this buffer
@@ -17,10 +18,13 @@ set cpo&vim
 setlocal softtabstop=2 shiftwidth=2
 setlocal suffixesadd=.abap
 
+let b:undo_ftplugin = "setl sts< sua< sw<"
+
 " Windows allows you to filter the open file dialog
 if has("gui_win32") && !exists("b:browsefilter")
   let b:browsefilter = "ABAP Source Files (*.abap)\t*.abap\n" .
                      \ "All Files (*.*)\t*.*\n"
+  let b:undo_ftplugin .= " | unlet! b:browsefilter"
 endif
 
 let &cpo = s:cpo_save
diff --git a/runtime/ftplugin/art.vim b/runtime/ftplugin/art.vim
index c501a992d8..41b02a94e5 100644
--- a/runtime/ftplugin/art.vim
+++ b/runtime/ftplugin/art.vim
@@ -3,6 +3,7 @@
 " Maintainer:    Dorai Sitaram <ds26@gte.com>
 " URL:		 http://www.ccs.neu.edu/~dorai/vimplugins/vimplugins.html
 " Last Change:   Apr 2, 2003
+"                2023 Aug 28 by Vim Project (undo_ftplugin)
 
 " Only do this when not done yet for this buffer
 if exists("b:did_ftplugin")
@@ -13,3 +14,5 @@ run ftplugin/lisp.vim
 
 setl lw-=if
 setl lw+=def-art-fun,deffacts,defglobal,defrule,defschema,for,schema,while
+
+let b:undo_ftplugin ..= " | setl lw<"
diff --git a/runtime/ftplugin/asm.vim b/runtime/ftplugin/asm.vim
index 0914bf634a..f6a92d57d7 100644
--- a/runtime/ftplugin/asm.vim
+++ b/runtime/ftplugin/asm.vim
@@ -1,11 +1,13 @@
 " Vim filetype plugin file
 " Language:	asm
 " Maintainer:	Colin Caine <cmcaine at the common googlemail domain>
-" Last Changed: 23 May 2020
+" Last Change:  23 May 2020
+" 		2023 Aug 28 by Vim Project (undo_ftplugin)
 
 if exists("b:did_ftplugin") | finish | endif
+let b:did_ftplugin = 1
 
 setl comments=:;,s1:/*,mb:*,ex:*/,://
 setl commentstring=;%s
 
-let b:did_ftplugin = 1
+let b:undo_ftplugin = "setl commentstring< comments<"
diff --git a/runtime/ftplugin/awk.vim b/runtime/ftplugin/awk.vim
index 1bca3ad3cf..40fe304cf4 100644
--- a/runtime/ftplugin/awk.vim
+++ b/runtime/ftplugin/awk.vim
@@ -37,11 +37,14 @@ if exists("g:awk_is_gawk")
     let b:undo_ftplugin .= " | setl fp<"
   endif
 
-  let path = system("gawk 'BEGIN { printf ENVIRON[\"AWKPATH\"] }'")
-  let path = substitute(path, '^\.\=:\|:\.\=$\|:\.\=:', ',,', 'g') " POSIX cwd
-  let path = substitute(path, ':', ',', 'g')
+  " Disabled by default for security reasons.
+  if dist#vim#IsSafeExecutable('awk', 'gawk')
+    let path = system("gawk 'BEGIN { printf ENVIRON[\"AWKPATH\"] }'")
+    let path = substitute(path, '^\.\=:\|:\.\=$\|:\.\=:', ',,', 'g') " POSIX cwd
+    let path = substitute(path, ':', ',', 'g')
 
-  let &l:path = path
+    let &l:path = path
+  endif
   let b:undo_ftplugin .= " | setl inc< path<"
 endif
 
diff --git a/runtime/ftplugin/bash.vim b/runtime/ftplugin/bash.vim
index 7bd9787b6c..7be1eca2a9 100644
--- a/runtime/ftplugin/bash.vim
+++ b/runtime/ftplugin/bash.vim
@@ -1,7 +1,7 @@
 " Vim filetype plugin file
 " Language:	bash
-" Maintainer:	Bram Moolenaar
-" Last Changed: 2019 Jan 12
+" Maintainer:	The Vim Project <https://github.com/vim/vim>
+" Last Changed: 2023 Aug 13
 "
 " This is not a real filetype plugin.  It allows for someone to set 'filetype'
 " to "bash" in the modeline, and gets the effect of filetype "sh" with
diff --git a/runtime/ftplugin/btm.vim b/runtime/ftplugin/btm.vim
index d3dc5b75f5..1c2c68599d 100644
--- a/runtime/ftplugin/btm.vim
+++ b/runtime/ftplugin/btm.vim
@@ -1,7 +1,8 @@
 " Vim filetype plugin file
 " Language:	BTM
-" Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last Change:	2004 Jul 06
+" Maintainer:	The Vim Project <https://github.com/vim/vim>
+" Last Change:	2023 Aug 10
+" Former Maintainer:	Bram Moolenaar <Bram@vim.org>
 
 " Only do this when not done yet for this buffer
 if exists("b:did_ftplugin")
diff --git a/runtime/ftplugin/bzl.vim b/runtime/ftplugin/bzl.vim
index 8ab876e9d6..716b3890b1 100644
--- a/runtime/ftplugin/bzl.vim
+++ b/runtime/ftplugin/bzl.vim
@@ -2,6 +2,7 @@
 " Language:	Bazel (http://bazel.io)
 " Maintainer:	David Barnett (https://github.com/google/vim-ft-bzl)
 " Last Change:	2021 Jan 19
+" 		2023 Aug 28 by Vim Project (undo_ftplugin)
 
 ""
 " @section Introduction, intro
@@ -41,6 +42,9 @@ let &l:tabstop = s:save_tabstop
 
 setlocal formatoptions-=t
 
+" Initially defined in the python ftplugin sourced above
+let b:undo_ftplugin .= " | setlocal fo<"
+
 " Make gf work with imports in BUILD files.
 setlocal includeexpr=substitute(v:fname,'//','','')
 
@@ -48,6 +52,7 @@ setlocal includeexpr=substitute(v:fname,'//','','')
 if get(g:, 'ft_bzl_fold', 0)
   setlocal foldmethod=syntax
   setlocal foldtext=BzlFoldText()
+  let b:undo_ftplugin .= " | setlocal fdm< fdt<"
 endif
 
 if exists('*BzlFoldText')
diff --git a/runtime/ftplugin/c.lua b/runtime/ftplugin/c.lua
new file mode 100644
index 0000000000..0ddbf09470
--- /dev/null
+++ b/runtime/ftplugin/c.lua
@@ -0,0 +1,14 @@
+-- These are the default option values in Vim, but not in Nvim, so must be set explicitly.
+vim.bo.commentstring = '/*%s*/'
+vim.bo.define = '^\\s*#\\s*define'
+vim.bo.include = '^\\s*#\\s*include'
+
+if vim.fn.isdirectory('/usr/include') == 1 then
+  vim.cmd([[
+    setlocal path^=/usr/include
+    setlocal path-=.
+    setlocal path^=.
+  ]])
+end
+
+vim.b.undo_ftplugin = vim.b.undo_ftplugin .. '|setl path<'
diff --git a/runtime/ftplugin/c.vim b/runtime/ftplugin/c.vim
index cfaf26f66c..83fb9ead68 100644
--- a/runtime/ftplugin/c.vim
+++ b/runtime/ftplugin/c.vim
@@ -1,7 +1,8 @@
 " Vim filetype plugin file
 " Language:	C
-" Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last Change:	2022 Apr 08
+" Maintainer:	The Vim Project <https://github.com/vim/vim>
+" Last Change:	2023 Aug 10
+" Former Maintainer:	Bram Moolenaar <Bram@vim.org>
 
 " Only do this when not done yet for this buffer
 if exists("b:did_ftplugin")
diff --git a/runtime/ftplugin/calender.lua b/runtime/ftplugin/calender.lua
new file mode 100644
index 0000000000..b4e68148f5
--- /dev/null
+++ b/runtime/ftplugin/calender.lua
@@ -0,0 +1 @@
+vim.bo.commentstring = '/*%s*/'
diff --git a/runtime/ftplugin/changelog.vim b/runtime/ftplugin/changelog.vim
index e9df63f8c9..ab73949be5 100644
--- a/runtime/ftplugin/changelog.vim
+++ b/runtime/ftplugin/changelog.vim
@@ -55,13 +55,19 @@ if &filetype == 'changelog'
     elseif $EMAIL_ADDRESS != ""
       return $EMAIL_ADDRESS
     endif
+    let s:default_login = 'unknown'
 
-    let login = s:login()
+    " Disabled by default for security reasons.
+    if dist#vim#IsSafeExecutable('changelog', 'whoami')
+      let login = s:login()
+    else
+      let login = s:default_login
+    endif
     return printf('%s <%s@%s>', s:name(login), login, s:hostname())
   endfunction
 
   function! s:login()
-    return s:trimmed_system_with_default('whoami', 'unknown')
+    return s:trimmed_system_with_default('whoami', s:default_login)
   endfunction
 
   function! s:trimmed_system_with_default(command, default)
@@ -71,7 +77,7 @@ if &filetype == 'changelog'
   function! s:system_with_default(command, default)
     let output = system(a:command)
     if v:shell_error
-      return default
+      return a:default
     endif
     return output
   endfunction
diff --git a/runtime/ftplugin/checkhealth.vim b/runtime/ftplugin/checkhealth.vim
index 62a1970b4a..4b530e6f7c 100644
--- a/runtime/ftplugin/checkhealth.vim
+++ b/runtime/ftplugin/checkhealth.vim
@@ -9,6 +9,9 @@ endif
 runtime! ftplugin/help.vim
 
 setlocal wrap breakindent linebreak
+setlocal foldexpr=getline(v:lnum-1)=~'^=\\{78}$'?'>1':(getline(v:lnum)=~'^=\\{78}'?0:'=')
+setlocal foldmethod=expr
+setlocal foldtext=v:lua.require('vim.health').foldtext()
 let &l:iskeyword='!-~,^*,^|,^",192-255'
 
 if exists("b:undo_ftplugin")
diff --git a/runtime/ftplugin/corn.vim b/runtime/ftplugin/corn.vim
new file mode 100644
index 0000000000..2259442229
--- /dev/null
+++ b/runtime/ftplugin/corn.vim
@@ -0,0 +1,18 @@
+" Vim filetype plugin
+" Language:         Corn
+" Original Author:  Jake Stanger (mail@jstanger.dev) 
+" License:          MIT
+" Last Change:      2023 May 28
+
+if exists('b:did_ftplugin')
+  finish
+endif
+let b:did_ftplugin = 1
+
+setlocal formatoptions-=t
+
+" Set comment (formatting) related options.
+setlocal commentstring=//\ %s comments=:// 
+
+" Let Vim know how to disable the plug-in.
+let b:undo_ftplugin = 'setlocal commentstring< comments< formatoptions<'
diff --git a/runtime/ftplugin/cpp.vim b/runtime/ftplugin/cpp.vim
index 58c4e4b24a..cb425aa8e7 100644
--- a/runtime/ftplugin/cpp.vim
+++ b/runtime/ftplugin/cpp.vim
@@ -1,7 +1,8 @@
 " Vim filetype plugin file
 " Language:	C++
-" Maintainer:	Bram Moolenaar <Bram@vim.org>
-" Last Change:	2020 Jul 26
+" Maintainer:	The Vim Project <https://github.com/vim/vim>
+" Last Change:	2023 Aug 10
+" Former Maintainer:	Bram Moolenaar <Bram@vim.org>
 
 " Only do this when not done yet for this buffer
 if exists("b:did_ftplugin")
diff --git a/runtime/ftplugin/cs.lua b/runtime/ftplugin/cs.lua
new file mode 100644
index 0000000000..b4e68148f5
--- /dev/null
+++ b/runtime/ftplugin/cs.lua
@@ -0,0 +1 @@
+vim.bo.commentstring = '/*%s*/'
diff --git a/runtime/ftplugin/csh.vim b/runtime/ftplugin/csh.vim
index ca5da5a8b9..2feec57bb2 100644
--- a/runtime/ftplugin/csh.vim
+++ b/runtime/ftplugin/csh.vim
@@ -3,9 +3,11 @@
 " Maintainer:		Doug Kearns <dougkearns@gmail.com>
 " Previous Maintainer:	Dan Sharp
 " Co