diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index 67a23afc1f..b6bed6dcde 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -156,6 +156,7 @@ digraph_setlist({digraphlist})	Boolean	register multiple |digraph|s
 echoraw({expr})			none	output {expr} as-is
 empty({expr})			Number	|TRUE| if {expr} is empty
 environ()			Dict	return environment variables
+err_teapot()			Number	produce error 418
 escape({string}, {chars})	String	escape {chars} in {string} with '\'
 eval({string})			any	evaluate {string} into its value
 eventhandler()			Number	|TRUE| if inside an event handler
@@ -2203,6 +2204,15 @@ environ()						*environ()*
 		use this: >
 			:echo index(keys(environ()), 'HOME', 0, 1) != -1
 
+
+err_teapot([{expr}])					*err_teapot()*
+		Produce an error with number 418, needed for implementation of
+		RFC 2325.
+		If {expr} is present and it is TRUE error 503 is given,
+		indicating that coffee is temporarily not available.
+		If {expr} is present it must be a String.
+
+
 escape({string}, {chars})				*escape()*
 		Escape the characters in {chars} that occur in {string} with a
 		backslash.  Example: >
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 1fd10f71ff..c4275de837 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -9054,11 +9054,11 @@ A jump table for the options with a short description can be found at |Q_op|.
 	displayed when 'verbosefile' is set.
 
 						*'viewdir'* *'vdir'*
-'viewdir' 'vdir'	string	(default for Amiga and Win32:
-							 "$VIM/vimfiles/view",
-				 for Unix: "~/.vim/view",
-				 for macOS: "$VIM:vimfiles:view"
-				 for VMS: "sys$login:vimfiles/view")
+'viewdir' 'vdir'	string	(default for Amiga "home:vimfiles/view",
+					 for Win32: "$HOME/vimfiles/view",
+					 for Unix: "$HOME/.vim/view",
+					 for macOS: "$VIM/vimfiles/view"
+					 for VMS: "sys$login:vimfiles/view")
 			global
 			{not available when compiled without the |+mksession|
 			feature}
diff --git a/runtime/doc/terminal.txt b/runtime/doc/terminal.txt
index 7a82fcf185..f03570497d 100644
--- a/runtime/doc/terminal.txt
+++ b/runtime/doc/terminal.txt
@@ -1,4 +1,4 @@
-*terminal.txt*	For Vim version 9.0.  Last change: 2023 Jun 09
+*terminal.txt*	For Vim version 9.0.  Last change: 2023 Jun 28
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -1541,6 +1541,20 @@ If there is no g:termdebug_config you can use: >
 	let g:termdebug_popup = 0
 
 
+Change default signs ~
+							*termdebug_signs*
+Termdebug uses the last two characters of the breakpoint ID in the
+signcolumn to represent breakpoints. For example, breakpoint ID 133
+will be displayed as `33`.
+
+If you want to customize the breakpoint signs: >
+	let g:termdebug_config['sign'] = '>>'
+If there is no g:terminal_config yet you can use: >
+	let g:termdebug_config = {'sign': '>>'}
+
+After this, breakpoints will be displayed as `>>` in the signcolumn.
+
+
 Window toolbar ~
 							*termdebug_winbar*
 By default the Termdebug plugin creates a window toolbar if the mouse is
diff --git a/runtime/doc/usr_41.txt b/runtime/doc/usr_41.txt
index 12583e1b39..bc294e1c03 100644
--- a/runtime/doc/usr_41.txt
+++ b/runtime/doc/usr_41.txt
@@ -1232,6 +1232,7 @@ Inter-process communication:		    *channel-functions*
 	json_decode()		decode a JSON string to Vim types
 	js_encode()		encode an expression to a JSON string
 	js_decode()		decode a JSON string to Vim types
+	err_teapot()		give error 418 or 503
 
 Jobs:						*job-functions*
 	job_start()		start a job
diff --git a/runtime/filetype.vim b/runtime/filetype.vim
index c93ce5eaeb..cdeb556410 100644
--- a/runtime/filetype.vim
+++ b/runtime/filetype.vim
@@ -21,7 +21,7 @@ au BufNewFile,BufRead ?\+.orig,?\+.bak,?\+.old,?\+.new,?\+.dpkg-dist,?\+.dpkg-ol
 	\ exe "doau filetypedetect BufRead " . fnameescape(expand("<afile>:r"))
 au BufNewFile,BufRead *~
 	\ let s:name = expand("<afile>") |
-	\ let s:short = substitute(s:name, '\~$', '', '') |
+	\ let s:short = substitute(s:name, '\~\+$', '', '') |
 	\ if s:name != s:short && s:short != "" |
 	\   exe "doau filetypedetect BufRead " . fnameescape(s:short) |
 	\ endif |
@@ -266,11 +266,11 @@ au BufNewFile,BufRead */etc/blkid.tab,*/etc/blkid.tab.old   setf xml
 " BSDL
 au BufNewFile,BufRead *.bsd,*.bsdl			setf bsdl
 
-" Bazel (http://bazel.io)
+" Bazel (https://bazel.build) and Buck2 (https://buck2.build/)
 autocmd BufRead,BufNewFile *.bzl,*.bazel,WORKSPACE,WORKSPACE.bzlmod	setf bzl
 if has("fname_case")
-  " There is another check for BUILD further below.
-  autocmd BufRead,BufNewFile *.BUILD,BUILD		setf bzl
+  " There is another check for BUILD and BUCK further below.
+  autocmd BufRead,BufNewFile *.BUILD,BUILD,BUCK		setf bzl
 endif
 
 " Busted (Lua unit testing framework - configuration files)
@@ -1511,6 +1511,9 @@ au BufNewFile,BufRead *.pdf				setf pdf
 " PCMK - HAE - crm configure edit
 au BufNewFile,BufRead *.pcmk				setf pcmk
 
+" PEM (Privacy-Enhanced Mail)
+au BufNewFile,BufRead *.pem,*.cer,*.crt,*.csr		setf pem
+
 " Perl
 if has("fname_case")
   au BufNewFile,BufRead *.pl,*.PL			call dist#ft#FTpl()
@@ -1961,6 +1964,9 @@ au BufNewFile,BufRead .login,.cshrc,csh.cshrc,csh.login,csh.logout,*.csh,.alias
 au BufNewFile,BufRead *.zig			setf zig
 au BufNewFile,BufRead *.zir			setf zir
 
+" Zserio
+au BufNewFile,BufRead *.zs			setf zserio
+
 " Z-Shell script (patterns ending in a star further below)
 au BufNewFile,BufRead .zprofile,*/etc/zprofile,.zfbfmarks  setf zsh
 au BufNewFile,BufRead .zshrc,.zshenv,.zlogin,.zlogout,.zcompdump setf zsh
@@ -2602,9 +2608,9 @@ au BufNewFile,BufRead *asterisk*/*voicemail.conf* call s:StarSetf('asteriskvm')
 " Bazaar version control
 au BufNewFile,BufRead bzr_log.*			setf bzr
 
-" Bazel build file
+" Bazel and Buck2 build file
 if !has("fname_case")
-  au BufNewFile,BufRead *.BUILD,BUILD		setf bzl
+  au BufNewFile,BufRead *.BUILD,BUILD,BUCK	setf bzl
 endif
 
 " BIND zone
diff --git a/runtime/pack/dist/opt/termdebug/plugin/termdebug.vim b/runtime/pack/dist/opt/termdebug/plugin/termdebug.vim
index b43b8ab507..d053851024 100644
--- a/runtime/pack/dist/opt/termdebug/plugin/termdebug.vim
+++ b/runtime/pack/dist/opt/termdebug/plugin/termdebug.vim
@@ -2,7 +2,7 @@
 "
 " Author: Bram Moolenaar
 " Copyright: Vim license applies, see ":help license"
-" Last Change: 2022 Nov 10
+" Last Change: 2023 Jun 24
 "
 " WORK IN PROGRESS - The basics works stable, more to come
 " Note: In general you need at least GDB 7.12 because this provides the
@@ -81,6 +81,8 @@ func s:Breakpoint2SignNumber(id, subid)
   return s:break_id + a:id * 1000 + a:subid
 endfunction
 
+" Define or adjust the default highlighting, using background "new".
+" When the 'background' option is set then "old" has the old value.
 func s:Highlight(init, old, new)
   let default = a:init ? 'default ' : ''
   if a:new ==# 'light' && a:old !=# 'light'
@@ -90,9 +92,21 @@ func s:Highlight(init, old, new)
   endif
 endfunc
 
-call s:Highlight(1, '', &background)
-hi default debugBreakpoint term=reverse ctermbg=red guibg=red
-hi default debugBreakpointDisabled term=reverse ctermbg=gray guibg=gray
+" Define the default highlighting, using the current 'background' value.
+func s:InitHighlight()
+  call s:Highlight(1, '', &background)
+  hi default debugBreakpoint term=reverse ctermbg=red guibg=red
+  hi default debugBreakpointDisabled term=reverse ctermbg=gray guibg=gray
+endfunc
+
+" Setup an autocommand to redefine the default highlight when the colorscheme
+" is changed.
+func s:InitAutocmd()
+  augroup TermDebug
+    autocmd!
+    autocmd ColorScheme * call s:InitHighlight()
+  augroup END
+endfunc
 
 " Get the command to execute the debugger as a list, defaults to ["gdb"].
 func s:GetCommand()
@@ -588,14 +602,14 @@ func s:GdbOutCallback(channel, text)
     return
   endif
   if a:text =~ '^\^error,msg='
-    let text = s:DecodeMessage(a:text[11:])
+    let text = s:DecodeMessage(a:text[11:], v:false)
     if exists('s:evalexpr') && text =~ 'A syntax error in expression, near\|No symbol .* in current context'
       " Silently drop evaluation errors.
       unlet s:evalexpr
       return
     endif
   elseif a:text[0] == '~'
-    let text = s:DecodeMessage(a:text[1:])
+    let text = s:DecodeMessage(a:text[1:], v:false)
   else
     call s:CommOutput(a:channel, a:text)
     return
@@ -611,21 +625,20 @@ func s:GdbOutCallback(channel, text)
   call win_gotoid(curwinid)
 endfunc
 
-" Decode a message from gdb.  quotedText starts with a ", return the text up
+" Decode a message from gdb.  "quotedText" starts with a ", return the text up
 " to the next ", unescaping characters:
-" - remove line breaks
-" - change \\t to \t
+" - remove line breaks (unless "literal" is v:true)
+" - change \\t to \t (unless "literal" is v:true)
 " - change \0xhh to \xhh (disabled for now)
 " - change \ooo to octal
 " - change \\ to \
-func s:DecodeMessage(quotedText)
+func s:DecodeMessage(quotedText, literal)
   if a:quotedText[0] != '"'
     echoerr 'DecodeMessage(): missing quote in ' . a:quotedText
     return
   endif
-  return a:quotedText
-        \ ->substitute('^"\|".*\|\\n', '', 'g')
-        \ ->substitute('\\t', "\t", 'g')
+  let msg = a:quotedText
+        \ ->substitute('^"\|".*', '', 'g')
         " multi-byte characters arrive in octal form
         " NULL-values must be kept encoded as those break the string otherwise
         \ ->substitute('\\000', s:NullRepl, 'g')
@@ -637,6 +650,13 @@ func s:DecodeMessage(quotedText)
         " \ ->substitute('\\0x00', s:NullRepl, 'g')
         \ ->substitute('\\\\', '\', 'g')
         \ ->substitute(s:NullRepl, '\\000', 'g')
+  if !a:literal
+          return msg
+        \ ->substitute('\\t', "\t", 'g')
+        \ ->substitute('\\n', '', 'g')
+  else
+          return msg
+  endif
 endfunc
 const s:NullRepl = 'XXXNULLXXX'
 
@@ -645,7 +665,7 @@ func s:GetFullname(msg)
   if a:msg !~ 'fullname'
     return ''
   endif
-  let name = s:DecodeMessage(substitute(a:msg, '.*fullname=', '', ''))
+  let name = s:DecodeMessage(substitute(a:msg, '.*fullname=', '', ''), v:true)
   if has('win32') && name =~ ':\\\\'
     " sometimes the name arrives double-escaped
     let name = substitute(name, '\\\\', '\\', 'g')
@@ -658,7 +678,7 @@ func s:GetAsmAddr(msg)
   if a:msg !~ 'addr='
     return ''
   endif
-  let addr = s:DecodeMessage(substitute(a:msg, '.*addr=', '', ''))
+  let addr = s:DecodeMessage(substitute(a:msg, '.*addr=', '', ''), v:false)
   return addr
 endfunc
 
@@ -1381,9 +1401,19 @@ func s:CreateBreakpoint(id, subid, enabled)
     else
       let hiName = "debugBreakpoint"
     endif
+    let label = ''
+    if exists('g:termdebug_config')
+      let label = get(g:termdebug_config, 'sign', '')
+    endif
+    if label == ''
+      let label = substitute(nr, '\..*', '', '')
+      if strlen(label) > 2
+	let label = strpart(label, strlen(label) - 2)
+      endif
+    endif
     call sign_define('debugBreakpoint' .. nr,
-			    \ #{text: substitute(nr, '\..*', '', ''),
-			    \ texthl: hiName})
+				\ #{text: strpart(label, 0, 2), 
+				\ texthl: hiName})
   endif
 endfunc
 
@@ -1522,5 +1552,8 @@ func s:BufUnloaded()
   endfor
 endfunc
 
+call s:InitHighlight()
+call s:InitAutocmd()
+
 let &cpo = s:keepcpo
 unlet s:keepcpo
diff --git a/runtime/syntax/Makefile b/runtime/syntax/Makefile
index 4d0c88980b..c8a7f00232 100644
--- a/runtime/syntax/Makefile
+++ b/runtime/syntax/Makefile
@@ -1,7 +1,8 @@
 # Portable Makefile for running syntax tests.
 
-# Override this if needed, e.g. with ../../src/vim
-VIMPROG = vim
+# Override this if needed, the default assumes Vim was build in the src dir.
+#VIMPROG = vim
+VIMPROG = ../../src/vim
 
 # "runtime" relative to "runtime/syntax/testdir"
 VIMRUNTIME = ../..
@@ -13,15 +14,22 @@ VIMRUNTIME = ../..
 
 RUN_VIMTEST = VIMRUNTIME=$(VIMRUNTIME) $(VALGRIND) $(ENVVARS) ../$(VIMPROG) -f $(GUI_FLAG)
 
+# Uncomment this line for debugging
+# DEBUGLOG = --log testlog
+
 # Run the tests that didn't run yet or failed previously.
 # If a test succeeds a testdir/done/{name} file will be written.
 # If a test fails a testdir/failed/{name}.dump file will be written.
+# Progress and error messages can be found in "testdir/messages".
 test:
 	@# the "vimcmd" file is used by the screendump utils
 	@echo "../$(VIMPROG)" > testdir/vimcmd
 	@echo "$(RUN_VIMTEST)" >> testdir/vimcmd
-	VIMRUNTIME=$(VIMRUNTIME) $(VIMPROG) --clean --not-a-term -u testdir/runtest.vim
+	VIMRUNTIME=$(VIMRUNTIME) $(VIMPROG) --clean --not-a-term $(DEBUGLOG) -u testdir/runtest.vim
+	@# FIXME: Temporarily show the whole file to find out what goes wrong
+	@#tail -n 6 testdir/messages
+	@cat testdir/messages
 
 
 clean testclean:
-	rm -f testdir/failed/* testdir/done/* testdir/vimcmd
+	rm -f testdir/failed/* testdir/done/* testdir/vimcmd testdir/messages
diff --git a/runtime/syntax/testdir/dumps/sh_01_00.dump b/runtime/syntax/testdir/dumps/sh_01_00.dump
new file mode 100644
index 0000000000..f38aff0dbf
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_01_00.dump
@@ -0,0 +1,20 @@
+>#+0#0000e05#ffffff0|!| |/|b|i|n|/|d|a|s|h| +0#0000000&@62
+|e+0#af5f00255&|x|p|o|r|t| +0#0000000&|`+0#e000e06&|e+0#af5f00255&|c|h|o| +0#e000002&|'+0#af5f00255&|A+0#e000002&|=|B|'+0#af5f00255&|`+0#e000e06&| +0#0000000&@55
+|p+0#af5f00255&|r|i|n|t|e|n|v| +0#0000000&|A| @64
+|e+0#af5f00255&|c|h|o| +0#e000002&|a| |`+0#e000e06&|#+0#0000e05&|f|o@1|`+0#e000e06&| +0#0000000&|b| @59
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|i+0#0000000&|s|_|d|a|s|h|:| |1|,| |i|s|_|p|o|s|i|x|:| |1|,| |i|s|_|s|h|:| |1|,| @22|1|,|1| @10|A|l@1| 
diff --git a/runtime/syntax/testdir/dumps/sh_01_99.dump b/runtime/syntax/testdir/dumps/sh_01_99.dump
new file mode 100644
index 0000000000..687677ed05
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_01_99.dump
@@ -0,0 +1,20 @@
+|#+0#0000e05#ffffff0|!| |/|b|i|n|/|d|a|s|h| +0#0000000&@62
+|e+0#af5f00255&|x|p|o|r|t| +0#0000000&|`+0#e000e06&|e+0#af5f00255&|c|h|o| +0#e000002&|'+0#af5f00255&|A+0#e000002&|=|B|'+0#af5f00255&|`+0#e000e06&| +0#0000000&@55
+|p+0#af5f00255&|r|i|n|t|e|n|v| +0#0000000&|A| @64
+>e+0#af5f00255&|c|h|o| +0#e000002&|a| |`+0#e000e06&|#+0#0000e05&|f|o@1|`+0#e000e06&| +0#0000000&|b| @59
+|~+0#4040ff13&| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|~| @73
+|:+0#0000000&|r|e|d|r|a|w| @49|4|,|1| @10|A|l@1| 
diff --git a/runtime/syntax/testdir/dumps/sh_02_00.dump b/runtime/syntax/testdir/dumps/sh_02_00.dump
new file mode 100644
index 0000000000..e752cc04cf
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_02_00.dump
@@ -0,0 +1,20 @@
+>#+0#0000e05#ffffff0|!| |/|b|i|n|/|k|s|h| +0#0000000&@63
+|#+0#0000e05&| |s|h|2| +0#0000000&@69
+|#+0#0000e05&| @1|J|u|l| |2|8|,| |2|0|1|8|:| |i|n|t|r|o|d|u|c|e|d| |s|h|C|o|m@1|a|n|d|S|u|b|B|Q|,| |w|h|i|c|h| |i|s| |*|n|o|t|*| |i|n|c|l|u|d|e|d| |i|n| |a| |s|h
+|S|u|b|C|o|m@1|a|n|d|L|i|s|t| |(|s|o| |i|t|s| |n|o|t| |r|e|c|u|r|s|i|v|e|)| +0#0000000&@37
+|c+0#00e0e07&@2|=+0#0000000&|`+0#e000e06&|e+0#af5f00255&|c|h|o| +0#e000002&|"+0#af5f00255&|t+0#e000002&|e|s|t|"+0#af5f00255&|`+0#e000e06&| +0#0000000&@57
+@8|c+0#00e0e07&@2|=+0#0000000&|`+0#e000e06&|e+0#af5f00255&|c|h|o| +0#e000002&|"+0#af5f00255&|t+0#e000002&|e|s|t|"+0#af5f00255&|`+0#e000e06&| +0#0000000&@49
+@75
+|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@65
+|c+0#af5f00255&|a|s|e| +0#0000000&|$+0#e000e06&|V|A|R| +0#0000000&|i+0#af5f00255&|n| +0#0000000&@62
+|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@65
+@8|x|||y|||z|)+0#af5f00255&| +0#0000000&|e+0#af5f00255&|c|h|o| +0#e000002&|x|y|z| |;+0#af5f00255&@1| +0#0000000&@48
+|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@65
+@8|a|||b|||c|)+0#af5f00255&| +0#0000000&|e+0#af5f00255&|c|h|o| +0#e000002&|a|b|c| |;+0#af5f00255&@1| +0#0000000&@48
+|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@65
+|e+0#af5f00255&|s|a|c| +0#0000000&@70
+@75
+|#+0#0000e05&| |J|u|l| |2|6|,| |2|0|1|8|:| |w|h|y| |i|s|n|'|t| |`|.@1|`| |b|e|i|n|g| |t|e|r|m|i|n|a|t|e|d| |p|r|o|p|e|r|l|y|?| +0#0000000&@17
+|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@65
+|c+0#af5f00255&|a|s|e| +0#0000000&|"+0#af5f00255&|$+0#e000e06&|a@2|"+0#af5f00255&| +0#0000000&|i+0#af5f00255&|n| +0#0000000&@60
+|i|s|_|k|o|r|n|s|h|e|l@1|:| |1|,| @40|1|,|1| @10|T|o|p| 
diff --git a/runtime/syntax/testdir/dumps/sh_02_01.dump b/runtime/syntax/testdir/dumps/sh_02_01.dump
new file mode 100644
index 0000000000..20930c8a13
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_02_01.dump
@@ -0,0 +1,20 @@
+|e+0#af5f00255#ffffff0|s|a|c| +0#0000000&@70
+@75
+|#+0#0000e05&| |J|u|l| |2|6|,| |2|0|1|8|:| |w|h|y| |i|s|n|'|t| |`|.@1|`| |b|e|i|n|g| |t|e|r|m|i|n|a|t|e|d| |p|r|o|p|e|r|l|y|?| +0#0000000&@17
+|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@65
+|c+0#af5f00255&|a|s|e| +0#0000000&|"+0#af5f00255&|$+0#e000e06&|a@2|"+0#af5f00255&| +0#0000000&|i+0#af5f00255&|n| +0#0000000&@60
+>#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@65
+@8|b@2|)+0#af5f00255&| +0#0000000&@1|c+0#00e0e07&@2|=+0#0000000&|`+0#e000e06&|e+0#af5f00255&|c|h|o| +0#e000002&|$+0#e000e06&|d@2||+0#af5f00255&|c+0#e000e06&|u|t| |-|b|4|-|`| +0#0000000&@36
+@8|e+0#af5f00255&|c|h|o| +0#e000002&|"+0#af5f00255&|t+0#e000002&|e|s|t|"+0#af5f00255&| +0#0000000&@55
+|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@65
+@8|;+0#af5f00255&@1| +0#0000000&@64
+|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@65
+@8|e+0#af5f00255&|s|a|c| +0#0000000&@62
+|#+0#0000e05&| |c|o|m@1|e|n|t| +0#0000000&@65
+@75
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diff --git a/runtime/syntax/testdir/dumps/sh_02_99.dump b/runtime/syntax/testdir/dumps/sh_02_99.dump
new file mode 100644
index 0000000000..a9902dddd9
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_02_99.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_03_00.dump b/runtime/syntax/testdir/dumps/sh_03_00.dump
new file mode 100644
index 0000000000..59eca0921e
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diff --git a/runtime/syntax/testdir/dumps/sh_03_01.dump b/runtime/syntax/testdir/dumps/sh_03_01.dump
new file mode 100644
index 0000000000..1dc4664c28
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_03_01.dump
@@ -0,0 +1,20 @@
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diff --git a/runtime/syntax/testdir/dumps/sh_03_99.dump b/runtime/syntax/testdir/dumps/sh_03_99.dump
new file mode 100644
index 0000000000..3d796c6ecd
--- /dev/null
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diff --git a/runtime/syntax/testdir/dumps/sh_04_00.dump b/runtime/syntax/testdir/dumps/sh_04_00.dump
new file mode 100644
index 0000000000..48289913a9
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_04_00.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_04_01.dump b/runtime/syntax/testdir/dumps/sh_04_01.dump
new file mode 100644
index 0000000000..5a0ebe8f89
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diff --git a/runtime/syntax/testdir/dumps/sh_04_99.dump b/runtime/syntax/testdir/dumps/sh_04_99.dump
new file mode 100644
index 0000000000..54ea81a564
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diff --git a/runtime/syntax/testdir/dumps/sh_05_00.dump b/runtime/syntax/testdir/dumps/sh_05_00.dump
new file mode 100644
index 0000000000..73164f0033
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diff --git a/runtime/syntax/testdir/dumps/sh_05_01.dump b/runtime/syntax/testdir/dumps/sh_05_01.dump
new file mode 100644
index 0000000000..83500539aa
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_05_01.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_05_02.dump b/runtime/syntax/testdir/dumps/sh_05_02.dump
new file mode 100644
index 0000000000..d4e7f9a498
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diff --git a/runtime/syntax/testdir/dumps/sh_05_03.dump b/runtime/syntax/testdir/dumps/sh_05_03.dump
new file mode 100644
index 0000000000..2e369d8d0d
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diff --git a/runtime/syntax/testdir/dumps/sh_05_04.dump b/runtime/syntax/testdir/dumps/sh_05_04.dump
new file mode 100644
index 0000000000..27c821a599
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diff --git a/runtime/syntax/testdir/dumps/sh_05_05.dump b/runtime/syntax/testdir/dumps/sh_05_05.dump
new file mode 100644
index 0000000000..1eb02297f3
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new file mode 100644
index 0000000000..46c4de0aa1
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diff --git a/runtime/syntax/testdir/dumps/sh_05_07.dump b/runtime/syntax/testdir/dumps/sh_05_07.dump
new file mode 100644
index 0000000000..e1dc4ed40c
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diff --git a/runtime/syntax/testdir/dumps/sh_05_08.dump b/runtime/syntax/testdir/dumps/sh_05_08.dump
new file mode 100644
index 0000000000..dc77a9f9e1
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diff --git a/runtime/syntax/testdir/dumps/sh_05_09.dump b/runtime/syntax/testdir/dumps/sh_05_09.dump
new file mode 100644
index 0000000000..944d7e3d5d
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diff --git a/runtime/syntax/testdir/dumps/sh_05_10.dump b/runtime/syntax/testdir/dumps/sh_05_10.dump
new file mode 100644
index 0000000000..43639c8116
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diff --git a/runtime/syntax/testdir/dumps/sh_05_11.dump b/runtime/syntax/testdir/dumps/sh_05_11.dump
new file mode 100644
index 0000000000..2ba00e31e3
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new file mode 100644
index 0000000000..2300b7d22b
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diff --git a/runtime/syntax/testdir/dumps/sh_05_13.dump b/runtime/syntax/testdir/dumps/sh_05_13.dump
new file mode 100644
index 0000000000..71e0e78b1f
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new file mode 100644
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new file mode 100644
index 0000000000..c9abc7cc32
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diff --git a/runtime/syntax/testdir/dumps/sh_05_16.dump b/runtime/syntax/testdir/dumps/sh_05_16.dump
new file mode 100644
index 0000000000..198e0b7b13
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diff --git a/runtime/syntax/testdir/dumps/sh_05_17.dump b/runtime/syntax/testdir/dumps/sh_05_17.dump
new file mode 100644
index 0000000000..b282e4d39f
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diff --git a/runtime/syntax/testdir/dumps/sh_05_18.dump b/runtime/syntax/testdir/dumps/sh_05_18.dump
new file mode 100644
index 0000000000..ef1e618e37
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diff --git a/runtime/syntax/testdir/dumps/sh_05_19.dump b/runtime/syntax/testdir/dumps/sh_05_19.dump
new file mode 100644
index 0000000000..05b9e3dc11
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diff --git a/runtime/syntax/testdir/dumps/sh_05_20.dump b/runtime/syntax/testdir/dumps/sh_05_20.dump
new file mode 100644
index 0000000000..5316887459
--- /dev/null
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diff --git a/runtime/syntax/testdir/dumps/sh_05_99.dump b/runtime/syntax/testdir/dumps/sh_05_99.dump
new file mode 100644
index 0000000000..c3d20b5ec2
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+++ b/runtime/syntax/testdir/dumps/sh_05_99.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_06_00.dump b/runtime/syntax/testdir/dumps/sh_06_00.dump
new file mode 100644
index 0000000000..c037b751ee
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_06_00.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_06_01.dump b/runtime/syntax/testdir/dumps/sh_06_01.dump
new file mode 100644
index 0000000000..e71380e847
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_06_01.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_06_02.dump b/runtime/syntax/testdir/dumps/sh_06_02.dump
new file mode 100644
index 0000000000..029ba130f9
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_06_02.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_06_03.dump b/runtime/syntax/testdir/dumps/sh_06_03.dump
new file mode 100644
index 0000000000..2f22cdefc7
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_06_03.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_06_99.dump b/runtime/syntax/testdir/dumps/sh_06_99.dump
new file mode 100644
index 0000000000..b347aad60d
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_06_99.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_07_00.dump b/runtime/syntax/testdir/dumps/sh_07_00.dump
new file mode 100644
index 0000000000..bf02a6073f
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diff --git a/runtime/syntax/testdir/dumps/sh_07_01.dump b/runtime/syntax/testdir/dumps/sh_07_01.dump
new file mode 100644
index 0000000000..07b0693e9b
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diff --git a/runtime/syntax/testdir/dumps/sh_07_02.dump b/runtime/syntax/testdir/dumps/sh_07_02.dump
new file mode 100644
index 0000000000..8e36dde750
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diff --git a/runtime/syntax/testdir/dumps/sh_07_03.dump b/runtime/syntax/testdir/dumps/sh_07_03.dump
new file mode 100644
index 0000000000..4c8ba62930
--- /dev/null
+++ b/runtime/syntax/testdir/dumps/sh_07_03.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_07_04.dump b/runtime/syntax/testdir/dumps/sh_07_04.dump
new file mode 100644
index 0000000000..21c8738f89
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+++ b/runtime/syntax/testdir/dumps/sh_07_04.dump
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diff --git a/runtime/syntax/testdir/dumps/sh_07_99.dump b/runtime/syntax/testdir/dumps/sh_07_99.dump
new file mode 100644
index 0000000000..777c568a25
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diff --git a/runtime/syntax/testdir/dumps/sh_08_00.dump b/runtime/syntax/testdir/dumps/sh_08_00.dump
new file mode 100644
index 0000000000..9be018a85d
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diff --git a/runtime/syntax/testdir/dumps/sh_08_01.dump b/runtime/syntax/testdir/dumps/sh_08_01.dump
new file mode 100644
index 0000000000..45758ccc6e
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new file mode 100644
index 0000000000..b3289ec5af
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diff --git a/runtime/syntax/testdir/dumps/sh_08_03.dump b/runtime/syntax/testdir/dumps/sh_08_03.dump
new file mode 100644
index 0000000000..08ebadf511
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diff --git a/runtime/syntax/testdir/dumps/sh_08_04.dump b/runtime/syntax/testdir/dumps/sh_08_04.dump
new file mode 100644
index 0000000000..6f77aaf92e
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diff --git a/runtime/syntax/testdir/dumps/sh_08_99.dump b/runtime/syntax/testdir/dumps/sh_08_99.dump
new file mode 100644
index 0000000000..26007b1925
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new file mode 100644
index 0000000000..8a51f39460
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diff --git a/runtime/syntax/testdir/dumps/sh_09_99.dump b/runtime/syntax/testdir/dumps/sh_09_99.dump
new file mode 100644
index 0000000000..b97cfa3955
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+|(+0#e000e06&| |c+0#af5f00255&|d| +0#e000e06&|$|{|1|:+0#af5f00255&|-|.+0#0000000&|}+0#e000e06&| |;+0#af5f00255&| +0#e000e06&|$|p|w|d| |)| +0#0000000&||| |s+0#af5f00255&|e|d| +0#0000000&|-+0#e000e06&|e| +0#0000000&|'+0#af5f00255&|s+0#e000002&|!|$|!|/|!|'+0#af5f00255&| +0#0000000&|-+0#e000e06&|e| +0#0000000&|'+0#af5f00255&|s+0#e000002&|!|/@1|*|$|!|/|!|'+0#af5f00255&| +0#0000000&@20
+|(+0#e000e06&| |c+0#af5f00255&|d| +0#e000e06&|;+0#af5f00255&| +0#e000e06&|$|p|w|d| |)| +0#0000000&||| |w|c| |-+0#e000e06&|c| +0#0000000&@53
+|(+0#e000e06&| |c+0#af5f00255&|d| +0#e000e06&|$|{|1|:+0#af5f00255&|+|.+0#0000000&|}+0#e000e06&| |;+0#af5f00255&| +0#e000e06&|$|p|w|d| |)| +0#0000000&||| |w|c| |-+0#e000e06&|c| +0#0000000&@45
+|(+0#e000e06&| |c+0#af5f00255&|d| +0#e000e06&|;+0#af5f00255&| +0#e000e06&|$|p|w|d| |)| +0#0000000&||| |w|c| |-+0#e000e06&|c| +0#0000000&@53
+|(+0#e000e06&| |c+0#af5f00255&|d| +0#e000e06&|$|{|1|:+0#af5f00255&|=|.+0#0000000&|}+0#e000e06&| |;+0#af5f00255&| +0#e000e06&|$|p|w|d| |)| +0#0000000&||| |w|c| |-+0#e000e06&|c| +0#0000000&@45
+|(+0#e000e06&| |c+0#af5f00255&|d| +0#e000e06&|;+0#af5f00255&| +0#e000e06&|$|p|w|d| |)| +0#0000000&||| |w|c| |-+0#e000e06&|c| +0#0000000&@53
+|(+0#e000e06&| |c+0#af5f00255&|d| +0#e000e06&|$|{|1|:+0#af5f00255&|?|}+0#e000e06&| @1|;+0#af5f00255&| +0#e000e06&|$|p|w|d| |)| +0#0000000&||| |w|c| |-+0#e000e06&|c| +0#0000000&@45
+|(+0#e000e06&| |c+0#af5f00255&|d| +0#e000e06&|;+0#af5f00255&| +0#e000e06&|$|p|w|d| |)| +0#0000000&||| |w|c| |-+0#e000e06&|c| +0#0000000&@53
+|(+0#e000e06&| |c+0#af5f00255&|d| +0#e000e06&|$|H|O|M|E| |;+0#af5f00255&| +0#e000e06&|$|p|w|d| |)| +0#0000000&||| |w|c| |-+0#e000e06&|c| +0#0000000&@47
+|(+0#e000e06&| |c+0#af5f00255&|d| +0#e000e06&|$|{|H|O|M|E|}| |;+0#af5f00255&| +0#e000e06&|$|p|w|d| |)| +0#0000000&||| |w|c| |-+0#e000e06&|c| +0#0000000&@45
+|(+0#e000e06&| |c+0#af5f00255&|d| +0#e000e06&|$|{|H|O|M|E|}| |)| +0#0000000&||| |w|c| |-+0#e000e06&|c| +0#0000000&@52
+|(|(+0#e000e06&|n+0#00e0e07&|=+0#0000000&|1+0#e000002&|+|2|)+0#e000e06&|)+0#ffffff16#ff404010| +0#0000000#ffffff0@65
+>l+0#af5f00255&|e|t| +0#0000000&|n+0#00e0e07&|=+0#0000000&|1+0#e000002&|++0#0000000&|2+0#e000002&| +0#0000000&@65
+|:|r|e|d|r|a|w| @49|1|9|,|1| @9|A|l@1| 
diff --git a/runtime/syntax/testdir/input/sh_01.sh b/runtime/syntax/testdir/input/sh_01.sh
new file mode 100644
index 0000000000..bd27c99bde
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_01.sh
@@ -0,0 +1,4 @@
+#! /bin/dash
+export `echo 'A=B'`
+printenv A
+echo a `#foo` b
diff --git a/runtime/syntax/testdir/input/sh_02.sh b/runtime/syntax/testdir/input/sh_02.sh
new file mode 100644
index 0000000000..81d5613e1d
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_02.sh
@@ -0,0 +1,30 @@
+#! /bin/ksh
+# sh2
+#  Jul 28, 2018: introduced shCommandSubBQ, which is *not* included in a shSubCommandList (so its not recursive)
+ccc=`echo "test"`
+	ccc=`echo "test"`
+
+# comment
+case $VAR in
+# comment
+	x|y|z) echo xyz ;;
+# comment
+	a|b|c) echo abc ;;
+# comment
+esac
+
+# Jul 26, 2018: why isn't `..` being terminated properly?
+# comment
+case "$aaa" in
+# comment
+  	bbb)  ccc=`echo $ddd|cut -b4-`
+	echo "test"
+# comment
+	;;
+# comment
+	esac
+# comment
+
+echo   $VAR abc
+export $VAR abc
+set    $VAR abc
diff --git a/runtime/syntax/testdir/input/sh_03.sh b/runtime/syntax/testdir/input/sh_03.sh
new file mode 100644
index 0000000000..8dd6dab9c3
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_03.sh
@@ -0,0 +1,33 @@
+#!/bin/ksh
+#  Test variable modifiers
+# Variable=value
+Variable='value'
+Variable="value"
+VariableA="pat1xxpat2"
+VariableB="pat2xxpat1"
+echo ${#}
+echo ${#VariableA}
+echo ${VariableA#pat1}
+echo ${VariableA##pat1}
+echo ${VariableB%pat1}
+echo ${VariableB%%pat1}
+
+# This gets marked as an error
+Variable=${VariableB:+${VariableC:=eng}}	# :+ seems to work for ksh as well as bash
+Variable=${VariableB:-${VariableC:-eng}}	# :- is ksh and bash
+
+# This is OK
+Variable='${VariableB:+${VariableC:=eng}}'
+Variable='${VariableB:-${VariableC:-eng}}'
+Variable="${VariableB:+${VariableC:=eng}}"	# :+ seems to work for ksh as well as bash
+Variable="${VariableB:-${VariableC:-eng}}"  # :- is ksh and bash
+
+# These are OK
+: ${VariableB:-${VariableC:-eng}}
+: "${VariableB:-${VariableC:-eng}}"
+: '${VariableB:-${VariableC:-eng}}'
+
+# Another test
+Variable=${VariableB:-${VariableC:-${VariableD:-${VariableE:=eng}}}}
+       :        ${VariableB:=${VariableC:-${VariableD:-${VariableE:=eng}}}}
+
diff --git a/runtime/syntax/testdir/input/sh_04.sh b/runtime/syntax/testdir/input/sh_04.sh
new file mode 100644
index 0000000000..e9ec5fedb7
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_04.sh
@@ -0,0 +1,27 @@
+#!/bin/dash
+# sh4
+Variable=${VariableB:-{VariableC}}
+Variable=${VariableB:-${VariableC:-{Var3:=eng}}}
+
+# This gets marked as an error while its ok
+Variable=${VariableB:-${VariableC:-{Var3:=eng}}}
+Variable=${VariableB:=${VariableC:={Var3:=${Var4:-eng}}}}
+Variable=${VariableB:=${VariableC:={Var3:=${Var4:-${Var5:-eng}}}}}
+Variable=${VariableB:=${VariableC:={Var3:=${Var4:-${Var5:-$Var6}}}}}
+
+# These are OK
+Variable="${VariableB:-${VariableC:-{Var3:=eng}}}"
+Variable="${VariableB:=${VariableC:={Var3:=${Var4:-eng}}}}"
+
+# This gets marked as an error too
+: ${VariableB:-${VariableC:-{Var3:=eng}}}
+: ${VariableB:=${VariableC:={Var3:=${Var4:-eng}}}}
+
+# This is OK
+: ${VariableB:-${VariableC:-eng}}
+: "${VariableB:-${VariableC:-eng}}"
+
+# First line is OK except its missing a closing "}",
+# so second line should have some error highlighting
+Variable=${VariableB:=${VariableC:={Var3:=${Var4:-eng}}}
+Variable=${VariableB:-${VariableC:-{Var3:=eng}}
diff --git a/runtime/syntax/testdir/input/sh_05.sh b/runtime/syntax/testdir/input/sh_05.sh
new file mode 100644
index 0000000000..87381e12ea
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_05.sh
@@ -0,0 +1,373 @@
+#!/bin/dash -x
+# sh5
+# Note that this is special for sh. ksh will be an extra file later.
+# Note too, that sh and ksh allow ${var:-sub} as well as ${var-sub}!
+# The ':' is optional!
+
+# This all should be OK
+# Case 0a
+[ -t 0 ] && date
+Variable1=value1
+Variable2='value2'
+Variable3="value3"
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 0b
+[ -t 0 ] && echo "\ndate"
+Variable1=$HOME
+Variable2='$HOME'
+Variable3="$HOME"
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 0c
+[ -t 0 ] && echo "\ndate"
+Variable1=$HOME$SHELL
+Variable2=$HOME.$SHELL
+Variable3=$HOME.$SHELL+$HOME-$SHELL/$HOME
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 0d
+[ -t 0 ] && echo "\ndate"
+Variable1=`date`
+Variable2=`id -ng`
+Variable3=`id -ng | wc -c`
+echo "$Variable1" "$Variable2" "$Variable3"
+
+################################################################################
+#
+# Case 1a with constants
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:=eng1}
+Variable2=${VariableA:-eng2}
+Variable3=${VariableA:?eng3}
+Variable3=${VariableA:+eng3}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 1b with constants in single quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:='eng1'}
+Variable2=${VariableA:-'eng2'}
+Variable3=${VariableA:?'eng3'}
+Variable3=${VariableA:+'eng3'}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 1c with constants in double quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:="eng1"}
+Variable2=${VariableA:-"eng2"}
+Variable3=${VariableA:?"eng3"}
+Variable3=${VariableA:+"eng3"}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 1d: constants but missing colons
+Variable1=${VariableA=eng1}
+Variable2=${VariableA-eng2}
+Variable3=${VariableA?eng3}
+Variable3=${VariableA+eng3}
+Variable1=${VariableA='eng1'}
+Variable2=${VariableA-'eng2'}
+Variable3=${VariableA?'eng3'}
+Variable3=${VariableA+'eng3'}
+Variable1=${VariableA="eng1"}
+Variable2=${VariableA-"eng2"}
+Variable3=${VariableA?"eng3"}
+Variable3=${VariableA+"eng3"}
+
+# Case 2a with a variable
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:=$HOME}
+Variable2=${VariableA:-$HOME}
+Variable3=${VariableA:?$HOME}
+Variable3=${VariableA:+$HOME}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 2b with a variable in single quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:='$HOME'}
+Variable2=${VariableA:-'$HOME'}
+Variable3=${VariableA:?'$HOME'}
+Variable3=${VariableA:+'$HOME'}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 2c with a variable in double quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:="$HOME"}
+Variable2=${VariableA:-"$HOME"}
+Variable3=${VariableA:?"$HOME"}
+Variable3=${VariableA:+"$HOME"}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 3a with a command substitution
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:=`date`}
+Variable2=${VariableA:-`date`}
+Variable3=${VariableA:?`date`}
+Variable3=${VariableA:+`date`}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 3b with a command + option substitution
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:=`id -ng`}
+Variable2=${VariableA:-`id -ng`}
+Variable3=${VariableA:?`id -ng`}
+Variable3=${VariableA:+`id -ng`}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 3c with a command + pipe substitution
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:=`id -ng | wc -c`}
+Variable2=${VariableA:-`id -ng | wc -c`}
+Variable3=${VariableA:?`id -ng | wc -c`}
+Variable3=${VariableA:+`id -ng | wc -c`}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+################################################################################
+#
+# The same with one nestet ${} level
+# Case 1a with constants
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:=eng1}}
+Variable2=${VariableA:-${VarB:-eng2}}
+Variable3=${VariableA:-${VarB:?eng3}}
+Variable3=${VariableA:-${VarB:+eng3}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 1b with constants in single quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:='eng1'}}
+Variable2=${VariableA:-${VarB:-'eng2'}}
+Variable3=${VariableA:-${VarB:?'eng3'}}
+Variable3=${VariableA:-${VarB:+'eng3'}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 1c with constants in double quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:="eng1"}}
+Variable2=${VariableA:-${VarB:-"eng2"}}
+Variable3=${VariableA:-${VarB:?"eng3"}}
+Variable3=${VariableA:-${VarB:+"eng3"}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 2a with a variable
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:=$HOME}}
+Variable2=${VariableA:-${VarB:-$HOME}}
+Variable3=${VariableA:-${VarB:?$HOME}}
+Variable3=${VariableA:-${VarB:+$HOME}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 2b with a variable in single quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:='$HOME'}}
+Variable2=${VariableA:-${VarB:-'$HOME'}}
+Variable3=${VariableA:-${VarB:?'$HOME'}}
+Variable3=${VariableA:-${VarB:+'$HOME'}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 2c with a variable in double quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:="$HOME"}}
+Variable2=${VariableA:-${VarB:-"$HOME"}}
+Variable3=${VariableA:-${VarB:?"$HOME"}}
+Variable3=${VariableA:-${VarB:+"$HOME"}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 3a with a command substitution
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:=`date`}}
+Variable2=${VariableA:-${VarB:-`date`}}
+Variable3=${VariableA:-${VarB:?`date`}}
+Variable3=${VariableA:-${VarB:+`date`}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 3b with a command + option substitution
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:=`id -ng`}}
+Variable2=${VariableA:-${VarB:-`id -ng`}}
+Variable3=${VariableA:-${VarB:?`id -ng`}}
+Variable3=${VariableA:-${VarB:+`id -ng`}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 3c with a command + pipe substitution
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:=`id -ng | wc -c`}}
+Variable2=${VariableA:-${VarB:-`id -ng | wc -c`}}
+Variable3=${VariableA:-${VarB:?`id -ng | wc -c`}}
+Variable3=${VariableA:-${VarB:+`id -ng | wc -c`}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+################################################################################
+#
+# The same with two nestet ${} level
+# Case 1a with constants
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:=eng1}}}
+Variable2=${VariableA:-${VarB:-${VarC:-eng2}}}
+Variable3=${VariableA:-${VarB:-${VarC:?eng3}}}
+Variable3=${VariableA:-${VarB:-${VarC:+eng3}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 1b with constants in single quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:='eng1'}}}
+Variable2=${VariableA:-${VarB:-${VarC:-'eng2'}}}
+Variable3=${VariableA:-${VarB:-${VarC:?'eng3'}}}
+Variable3=${VariableA:-${VarB:-${VarC:+'eng3'}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 1c with constants in double quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:="eng1"}}}
+Variable2=${VariableA:-${VarB:-${VarC:-"eng2"}}}
+Variable3=${VariableA:-${VarB:-${VarC:?"eng3"}}}
+Variable3=${VariableA:-${VarB:-${VarC:+"eng3"}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 2a with a variable
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:=$HOME}}}
+Variable2=${VariableA:-${VarB:-${VarC:-$HOME}}}
+Variable3=${VariableA:-${VarB:-${VarC:?$HOME}}}
+Variable3=${VariableA:-${VarB:-${VarC:+$HOME}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 2b with a variable in single quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:='$HOME'}}}
+Variable2=${VariableA:-${VarB:-${VarC:-'$HOME'}}}
+Variable3=${VariableA:-${VarB:-${VarC:?'$HOME'}}}
+Variable3=${VariableA:-${VarB:-${VarC:+'$HOME'}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 2c with a variable in double quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:="$HOME"}}}
+Variable2=${VariableA:-${VarB:-${VarC:-"$HOME"}}}
+Variable3=${VariableA:-${VarB:-${VarC:?"$HOME"}}}
+Variable3=${VariableA:-${VarB:-${VarC:?"$HOME"}}}
+Variable3=${VariableA:-${VarB:-${VarC:+"$HOME"}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 3a with a command substitution
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:=`date`}}}
+Variable2=${VariableA:-${VarB:-${VarC:-`date`}}}
+Variable3=${VariableA:-${VarB:-${VarC:?`date`}}}
+Variable3=${VariableA:-${VarB:-${VarC:+`date`}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 3b with a command + option substitution
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:=`id -ng`}}}
+Variable2=${VariableA:-${VarB:-${VarC:-`id -ng`}}}
+Variable3=${VariableA:-${VarB:-${VarC:?`id -ng`}}}
+Variable3=${VariableA:-${VarB:-${VarC:+`id -ng`}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 3c with a command + pipe substitution
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:=`id -ng | wc -c`}}}
+Variable2=${VariableA:-${VarB:-${VarC:-`id -ng | wc -c`}}}
+Variable3=${VariableA:-${VarB:-${VarC:?`id -ng | wc -c`}}}
+Variable3=${VariableA:-${VarB:-${VarC:+`id -ng | wc -c`}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+
+################################################################################
+#
+# The same with three nestet ${} level
+# Case 1a with constants
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:-${VarD:=eng1}}}}
+Variable2=${VariableA:-${VarB:-${VarC:-${VarD:-eng2}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:?eng3}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:+eng3}}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 1b with constants in single quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:-${VarD:='eng1'}}}}
+Variable2=${VariableA:-${VarB:-${VarC:-${VarD:-'eng2'}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:?'eng3'}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:+'eng3'}}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 1c with constants in double quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:-${VarD:="eng1"}}}}
+Variable2=${VariableA:-${VarB:-${VarC:-${VarD:-"eng2"}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:?"eng3"}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:+"eng3"}}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 2a with a variable
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:-${VarD:=$HOME}}}}
+Variable2=${VariableA:-${VarB:-${VarC:-${VarD:-$HOME}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:?$HOME}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:+$HOME}}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 2b with a variable in single quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:-${VarD:='$HOME'}}}}
+Variable2=${VariableA:-${VarB:-${VarC:-${VarD:-'$HOME'}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:?'$HOME'}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:+'$HOME'}}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 2c with a variable in double quotes
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:-${VarD:="$HOME"}}}}
+Variable2=${VariableA:-${VarB:-${VarC:-${VarD:-"$HOME"}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:?"$HOME"}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:+"$HOME"}}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 3a with a command substitution
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:-${VarD:=`date`}}}}
+Variable2=${VariableA:-${VarB:-${VarC:-${VarD:-`date`}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:?`date`}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:+`date`}}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 3b with a command + option substitution
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:-${VarD:=`id -ng`}}}}
+Variable2=${VariableA:-${VarB:-${VarC:-${VarD:-`id -ng`}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:?`id -ng`}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:+`id -ng`}}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+# Case 3c with a command + pipe substitution
+[ -t 0 ] && echo "\ndate"
+Variable1=${VariableA:-${VarB:-${VarC:-${VarD:=`id -ng | wc -c`}}}}
+Variable2=${VariableA:-${VarB:-${VarC:-${VarD:-`id -ng | wc -c`}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:?`id -ng | wc -c`}}}}
+Variable3=${VariableA:-${VarB:-${VarC:-${VarD:+`id -ng | wc -c`}}}}
+echo "$Variable1" "$Variable2" "$Variable3"
+
+
+################################################################################
+#
+# This is also allowed:
+Variable1=${VariableA-${VarB-${VarC-${VarD=`id -ng | wc -c`}}}}
+
+################################################################################
+#
+# All cases with ${Var:?} which works for the sh:
+Variable4=${Variable4:?}
+Variable4=${Variable4:?OK}
+Variable4=${Variable4:?`date`}
+Variable4=${Variable4:?'an OK string'}
+Variable4=${Variable4:?"an OK string"}
+Variable4=${Variable4:?$HOME$SHELL}
+Variable4=${Variable4:?$HOME:$SHELL}
+
+# All cases with ${Var:?} which works also for ksh:
+Variable4=${Variable4:?This is OK}
+Variable4=${Variable4:?This is OK, too: `date`}
+
+# What happens with ${#identifier[*]}:
+Variable5=${#identifier[*]}
diff --git a/runtime/syntax/testdir/input/sh_06.sh b/runtime/syntax/testdir/input/sh_06.sh
new file mode 100644
index 0000000000..cec6cc30af
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_06.sh
@@ -0,0 +1,71 @@
+#!/bin/ksh
+# Shall we debug this script? If so, remove the '#' before '#DebugScript=set'
+DebugScript=set
+
+# Show that we are busy.
+[ -t 0 ] && echo "Please wait ... \c" >`tty`
+
+################################################################################
+#
+# Display some Help
+#
+Usage () {
+
+# does this comment work?
+VariableName="${BasicConfigName}_*"
+
+# Echo some ksh special variables
+echo "CDPATH="${CDPATH}
+
+# Get also a short description of the backuptype/method
+eval BackupMethod=\$mess09${BackupType}B
+
+case $BackupType in
+  3)   DefaultDevice=$MountDevice    ;;
+  1|2) DefaultDevice=$TapeDrive      ;;
+esac
+
+# If we have more the 53 characters in the variables below split them up
+# into several lines and add 3 tabs before them
+for Variable in DefaultExclude DefaultFindOption DoNotBackupList
+do
+    eval VarValue=\$$Variable
+    VarValue=`echo $VarValue | FoldS 53 | sed "2,\\$s/^/$Tab$Tab$Tab/"`
+    eval $Variable=\$VarValue
+done
+
+echo "
+Usage:  $ScriptName [-Options]
+
+Options List:
+        -v              The current version of '$ScriptName'
+        -h  | -H | ?    Display this list
+
+"
+
+} # End of Usage
+
+
+################################################################################
+#
+# Create a backup using fbackup/frecover
+#
+ExecuteFbackup () { # TESTING
+
+[ "$DebugScript" ]    && set -x || set +x
+
+cd $cwd
+
+} # End of ExecuteFbackup
+
+
+################################################################################
+# main ### main ### main ### main ### main ### main ### main ### main ### main #
+################################################################################
+#
+# Here is the heart of this script:
+#
+Usage
+
+# And exit
+Exit $Result
diff --git a/runtime/syntax/testdir/input/sh_07.sh b/runtime/syntax/testdir/input/sh_07.sh
new file mode 100644
index 0000000000..0e74227bc1
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_07.sh
@@ -0,0 +1,93 @@
+#!/bin/dash
+# Test file to test 'for do done' loops.
+# You can start this script like: $0 {-ne -gt -le ...} (all numeric operators 
+# are allowed!
+
+# All this works and should be OK
+
+################################################################################
+#
+# For loop without 'in list'. Uses $1 $2 ... This is a special case!
+# This 'for Var, do, done' is a very handy solution AND no real replacement 
+# available!
+#
+Function1 () {
+
+echo "Function1: for loop inside a function:\t\c"
+[ "$*" ] || echo "none\c"
+
+for Var
+do
+    [ 1 $Var 2 ] && echo "OK \c" || echo "no \c"
+done
+echo
+
+} # End of Function1
+
+################################################################################
+#
+# For loop with 'in list' $*
+#
+Function2 () {
+
+echo "Function2: for loop inside a function:\t\c"
+for Var in $*
+do
+    [ 1 $Var 2 ] && echo "OK \c" || echo "no \c"
+done ; echo
+
+} # End of Function2
+
+################################################################################
+#
+# For loop with 'in list' $@. Works the same way as $*
+#
+Function3 () {
+
+echo "Function3: for loop inside a function:\t\c"
+for Var in $@
+do
+    [ 1 $Var 2 ] && echo "OK \c" || echo "no \c"
+done ; echo
+
+} # End of Function3
+
+################################################################################
+#
+# For loop with 'in list' "$@". Special case. Works like "$1" "$2" ...
+#
+Function4 () {
+
+echo "Function4: for loop inside a function:\t\c"
+for Var in "$@"
+do
+    [ 1 $Var 2 ] && echo "OK \c" || echo "no \c"
+done ; echo
+
+} # End of Function4
+
+
+################################################################################
+# main ### main ### main ### main ### main ### main ### main ### main ### main #
+################################################################################
+#
+# Here is the heart of this script:
+#
+echo "Processing the following command line arguements: ${*:-none}"
+echo "Script:    for loop outside a function:\t\c"
+for Var
+do
+    [ 1 $Var 2 ] && echo "OK \c" || echo "no \c"
+done ; echo
+
+# Same as function calls
+Function1 -eq -ne -gt -ge -le -lt
+Function2 -eq -ne -gt -ge -le -lt
+Function3 -eq -ne -gt -ge -le -lt
+Function4 -eq -ne -gt -ge -le -lt '-ge 1 -a 2 -ge'
+
+# Now the same call like Function4 but with Function1
+Function1 -eq -ne -gt -ge -le -lt '-ge 1 -a 2 -ge'
+Function1
+
+exit $?
diff --git a/runtime/syntax/testdir/input/sh_08.sh b/runtime/syntax/testdir/input/sh_08.sh
new file mode 100644
index 0000000000..2b80d43ba6
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_08.sh
@@ -0,0 +1,82 @@
+#!/bin/ksh -p
+
+# Note that this is special test file for ksh. sh is an extra file.
+# Note too, that this file contains ONLY things which works for ksh BUT NOT
+# for sh
+
+# This all should be OK
+
+# Several keywords without any quotes!
+# Case 1a. Several Constants 
+[ -t 0 ] && date
+Variable1=${VariableA:-This is a Text}
+Variable2=${VariableA:=This is a Text}
+Variable3=${VariableA:?This is a Text}
+echo "$Variable1" ; echo "$Variable2" ; echo "$Variable3"
+
+# Case 1b. Variable and Constant
+[ -t 0 ] && echo "\n`date`" && unset VariableA
+Variable1=${VariableA:-$HOME This is a Text}
+Variable2=${VariableA:=$HOME This is a Text}
+Variable3=${VariableA:?$HOME This is a Text}
+echo "$Variable1" ; echo "$Variable2" ; echo "$Variable3"
+
+# Case 1c. Constant and Variable
+[ -t 0 ] && echo "\n`date`" && unset VariableA
+Variable1=${VariableA:-This is a Text in $HOME}
+Variable2=${VariableA:=This is a Text in $HOME}
+Variable3=${VariableA:+This is a Text in $HOME}       #! :+ is bash-only, error here expected
+Variable1=${VariableA:-This is a Text in $HOME too}
+Variable2=${VariableA:=This is a Text in $HOME too}
+Variable3=${VariableA:+This is a Text in $HOME too}
+echo "$Variable1" ; echo "$Variable2" ; echo "$Variable3"
+
+# Case 1d. More Variables and Constants. Starting with a Variable.
+[ -t 0 ] && echo "\n`date`" && unset VariableA
+Variable1=${VariableA:-$SHELL}
+Variable1=${VariableA:-$SHELL This is a Text in $HOME}
+Variable2=${VariableA:=$SHELL This is a Text in $HOME}
+Variable3=${VariableA:+$SHELL This is a Text in $HOME}
+echo "$Variable1" ; echo "$Variable2" ; echo "$Variable3"
+
+# Case 1e. More Constants and Variables. Starting with a Constant.
+[ -t 0 ] && echo "\n`date`" && unset VariableA
+Variable1=${VariableA:-"This is a Text in $HOME $SHELL"}
+Variable1=${VariableA:-This is a Text in $HOME $SHELL}
+Variable2=${VariableA:=This is a Text in $HOME $SHELL}
+Variable3=${VariableA:+This is a Text in $HOME $SHELL}
+echo "$Variable1" ; echo "$Variable2" ; echo "$Variable3"
+
+# Case 1x. The same with ':'
+[ -t 0 ] && echo "\n`date`" && unset VariableA
+: ${VariableA:-This is a Text}
+: ${VariableA:-$HOME This is a Text}
+: ${VariableA:-This is a Text in $HOME}
+: ${VariableA:-$SHELL This is a Text in $HOME}
+: ${VariableA:-This is a Text in $HOME $SHELL}
+
+# Case 1y. The same with ':' and without the ':' in the parameter substitution
+[ -t 0 ] && echo "\n`date`" && unset VariableA
+: ${VariableA-This is a Text}
+: ${VariableA-$HOME This is a Text}
+: ${VariableA-This is a Text in $HOME}
+: ${VariableA-$SHELL This is a Text in $HOME}
+: ${VariableA-This is a Text in $HOME $SHELL}
+
+################################################################################
+#
+# This are valid usages for ${Var:?} in ksh!
+#
+Variable4=${Variable4:?This is an Error Message}
+Variable4=${Variable4:?This is an Error Message from `date`}
+
+: ${Variable4:?This is an Error Message}
+: ${Variable4:?This is an Error Message from `date`}
+
+exit $?
+
+# Michael Soulier
+if [ $# -ne 1 ]; then
+	echo whatever
+	exit 1
+fi
diff --git a/runtime/syntax/testdir/input/sh_09.sh b/runtime/syntax/testdir/input/sh_09.sh
new file mode 100644
index 0000000000..e736e06b64
--- /dev/null
+++ b/runtime/syntax/testdir/input/sh_09.sh
@@ -0,0 +1,19 @@
+#!/bin/dash
+# Test file for vim the check () subshells
+( cd ; $pwd ) | wc -c
+( cd $1 ; $pwd ) | wc -c
+( cd ${1} ; $pwd ) | wc -c
+( cd ; $pwd ) | wc -c
+( cd ${1:-.} ; $pwd ) | sed -e 's!$!/!' -e 's!//*$!/!'
+( cd ; $pwd ) | wc -c
+( cd ${1:+.} ; $pwd ) | wc -c
+( cd ; $pwd ) | wc -c
+( cd ${1:=.} ; $pwd ) | wc -c
+( cd ; $pwd ) | wc -c
+( cd ${1:?}  ; $pwd ) | wc -c
+( cd ; $pwd ) | wc -c
+( cd $HOME ; $pwd ) | wc -c
+( cd ${HOME} ; $pwd ) | wc -c
+( cd ${HOME} ) | wc -c
+((n=1+2))
+let n=1+2
diff --git a/runtime/syntax/testdir/runtest.vim b/runtime/syntax/testdir/runtest.vim
index d57341d226..2603a52da0 100644
--- a/runtime/syntax/testdir/runtest.vim
+++ b/runtime/syntax/testdir/runtest.vim
@@ -5,28 +5,63 @@
 " Only do this with the +eval feature
 if 1
 
-let cwd = getcwd()
-if cwd !~ '[/\\]runtime[/\\]syntax\>'
-  echoerr 'Current directory must be "runtime/syntax"'
-  qall
+" Remember the directory where we started.  Will change to "testdir" below.
+let syntaxDir = getcwd()
+
+let s:messagesFname = fnameescape(syntaxDir .. '/testdir/messages')
+
+let s:messages = []
+
+" Add one message to the list of messages
+func Message(msg)
+  echomsg a:msg
+  call add(s:messages, a:msg)
+endfunc
+
+" Report a fatal message and exit
+func Fatal(msg)
+  echoerr a:msg
+  call AppendMessages(a:msg)
+  qall!
+endfunc
+
+" Append s:messages to the messages file and make it empty.
+func AppendMessages(header)
+  exe 'split ' .. s:messagesFname
+  call append(line('$'), '')
+  call append(line('$'), a:header)
+  call append(line('$'), s:messages)
+  let s:messages = []
+  wq
+endfunc
+
+" Relevant messages are written to the "messages" file.
+" If the file already exists it is appended to.
+exe 'split ' .. s:messagesFname
+call append(line('$'), repeat('=-', 70))
+call append(line('$'), '')
+let s:test_run_message = 'Test run on ' .. strftime("%Y %b %d %H:%M:%S")
+call append(line('$'), s:test_run_message)
+wq
+
+if syntaxDir !~ '[/\\]runtime[/\\]syntax\>'
+  call Fatal('Current directory must be "runtime/syntax"')
 endif
 if !isdirectory('testdir')
-  echoerr '"testdir" directory not found'
-  qall
+  call Fatal('"testdir" directory not found')
 endif
 
 " Use the script for source code screendump testing.  It sources other scripts,
 " therefore we must "cd" there.
 cd ../../src/testdir
 source screendump.vim
-exe 'cd ' .. fnameescape(cwd)
+exe 'cd ' .. fnameescape(syntaxDir)
 
 " For these tests we need to be able to run terminal Vim with 256 colors.  On
 " MS-Windows the console only has 16 colors and the GUI can't run in a
 " terminal.
 if !CanRunVimInTerminal()
-  echomsg 'Cannot make screendumps, aborting'
-  qall
+  call Fatal('Cannot make screendumps, aborting')
 endif
 
 cd testdir
@@ -50,8 +85,10 @@ func HandleSwapExists()
   endif
 endfunc
 
-
-let failed_count = 0
+let ok_count = 0
+let failed_tests = []
+let skipped_count = 0
+let MAX_FAILED_COUNT = 5
 for fname in glob('input/*.*', 1, 1)
   if fname =~ '\~$'
     " backup file, skip
@@ -59,57 +96,151 @@ for fname in glob('input/*.*', 1, 1)
   endif
 
   let linecount = readfile(fname)->len()
-  let root = substitute(fname, 'input[/\\]\(.*\)\..*', '\1', '')
+  let root = fnamemodify(fname, ':t:r')
+  let filetype = substitute(root, '\([^_.]*\)[_.].*', '\1', '')
+  let failed_root = 'failed/' .. root
 
-  " Execute the test if the "done" file does not exist of when the input file
+  " Execute the test if the "done" file does not exist or when the input file
   " is newer.
   let in_time = getftime(fname)
   let out_time = getftime('done/' .. root)
   if out_time < 0 || in_time > out_time
-    for dumpname in glob('failed/' .. root .. '_\d*\.dump', 1, 1)
+    call ch_log('running tests for: ' .. fname)
+
+    for dumpname in glob(failed_root .. '_\d*\.dump', 1, 1)
       call delete(dumpname)
     endfor
     call delete('done/' .. root)
 
     let lines =<< trim END
       syntax on
+
+      " extra info for shell variables
+      func ShellInfo()
+	let msg = ''
+	for [key, val] in items(b:)
+	  if key =~ '^is_'
+	    let msg ..= key .. ': ' .. val .. ', '
+	  endif
+	endfor
+	if msg != ''
+	  echomsg msg
+	endif
+      endfunc
+
+      au! SwapExists * call HandleSwapExists()
+      func HandleSwapExists()
+	" Ignore finding a swap file for the test input, the user might be
+	" editing it and that's OK.
+	if expand('<afile>') =~ 'input[/\\].*\..*'
+	  let v:swapchoice = 'e'
+	endif
+      endfunc
     END
     call writefile(lines, 'Xtestscript')
-    let buf = RunVimInTerminal('-S Xtestscript ' .. fname, {})
 
-    " Screendump at the start of the file: root_00.dump
-    let fail = VerifyScreenDump(buf, root .. '_00', {})
+    " close all but the last window
+    while winnr('$') > 1
+      close
+    endwhile
+
+    " Redraw to make sure that messages are cleared and there is enough space
+    " for the terminal window.
+    redraw
+
+    let buf = RunVimInTerminal('-S Xtestscript', {})
+    " edit the file only after catching the SwapExists event
+    call term_sendkeys(buf, ":edit " .. fname .. "\<CR>")
 
-    " Make a Screendump every 18 lines of the file: root_NN.dump
+    if filetype == 'sh'
+      call term_sendkeys(buf, ":call ShellInfo()\<CR>")
+    endif
+
+    " Screendump at the start of the file: failed/root_00.dump
+    let root_00 = root .. '_00'
+    call ch_log('First screendump for ' .. fname .. ': failed/' .. root_00 .. '.dump')
+    let fail = VerifyScreenDump(buf, root_00, {})
+
+    " clear the shell info if there are not enough lines to cause a scroll
+    if filetype == 'sh' && linecount <= 19
+      call term_sendkeys(buf, ":redraw\<CR>")
+    endif
+
+    " Make a Screendump every 18 lines of the file: failed/root_NN.dump
     let topline = 1
     let nr = 1
     while linecount - topline > 20
       let topline += 18
       call term_sendkeys(buf, printf("%dGzt", topline))
-      let fail += VerifyScreenDump(buf, root .. printf('_%02d', nr), {})
+      let root_next = root .. printf('_%02d', nr)
+      call ch_log('Next screendump for ' .. fname .. ': failed/' .. root_next .. '.dump')
+      let fail += VerifyScreenDump(buf, root_next, {})
       let nr += 1
     endwhile
 
-    " Screendump at the end of the file: root_99.dump
+    " Screendump at the end of the file: failed/root_99.dump
     call term_sendkeys(buf, 'Gzb')
-    let fail += VerifyScreenDump(buf, root .. '_99', {})
+    let root_last = root .. '_99'
+    call ch_log('Last screendump for ' .. fname .. ': failed/' .. root_last .. '.dump')
+    let fail += VerifyScreenDump(buf, root_last, {})
 
     call StopVimInTerminal(buf)
     call delete('Xtestscript')
 
+    " redraw here to avoid the following messages to get mixed up with screen
+    " output.
+    redraw
+
+    " Add any assert errors to s:messages.
+    if len(v:errors) > 0
+      call extend(s:messages, v:errors)
+      " Echo the errors here, in case the script aborts or the "messages" file
+      " is not displayed later.
+      echomsg v:errors
+      let v:errors = []
+      let fail += 1
+    endif
+
     if fail == 0
-      call writefile(['OK'], 'done/' . root)
-      echo "Test " . root . " OK\n"
+      call Message("Test " .. root .. " OK")
+
+      call writefile(['OK'], 'done/' .. root)
+
+      let ok_count += 1
     else
-      let failed_count += 1
+      call Message("Test " .. root .. " FAILED")
+
+      call delete('done/' .. root)
+
+      eval failed_tests->add(root)
+      if len(failed_tests) > MAX_FAILED_COUNT
+	call Message('')
+	call Message('Too many errors, aborting')
+      endif
     endif
+  else
+    call Message("Test " .. root .. " skipped")
+    let skipped_count += 1
+  endif
+
+  " Append messages to the file "testdir/messages"
+  call AppendMessages('Input file ' .. fname .. ':')
+
+  if len(failed_tests) > MAX_FAILED_COUNT
+    break
   endif
 endfor
 
 " Matching "if 1" at the start.
 endif
 
-if failed_count > 0
+call Message(s:test_run_message)
+call Message('OK: ' .. ok_count)
+call Message('FAILED: ' .. len(failed_tests) .. ': ' .. string(failed_tests))
+call Message('skipped: ' .. skipped_count)
+call AppendMessages('== SUMMARY ==')
+
+if len(failed_tests) > 0
   " have make report an error
   cquit
 endif
diff --git a/src/Makefile b/src/Makefile
index 0ed097fb47..70d15f0d20 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -2351,8 +2351,8 @@ installruntime: installrtbase installmacros installpack installtutor installspel
 # Also install most of the other runtime files.
 installrtbase: $(HELPSOURCE)/vim.1 $(DEST_VIM) $(VIMTARGET) $(DEST_RT) \
 		$(DEST_HELP) $(DEST_PRINT) $(DEST_COL) \
-		$(DEST_SYN) $(DEST_SYN)/shared $(DEST_IND) \
-		$(DEST_FTP) $(DEST_AUTO) $(DEST_AUTO)/dist $(DEST_AUTO)/xml \
+		$(DEST_SYN) $(DEST_SYN)/shared $(DEST_IND) $(DEST_FTP) \
+		$(DEST_AUTO) $(DEST_AUTO)/dist $(DEST_AUTO)/xml $(DEST_AUTO)/zig \
 		$(DEST_IMPORT) $(DEST_IMPORT)/dist \
 		$(DEST_PLUG) $(DEST_TUTOR) $(DEST_SPELL) $(DEST_COMP)
 	-$(SHELL) ./installman.sh install $(DEST_MAN) "" $(INSTALLMANARGS)
@@ -2436,6 +2436,8 @@ installrtbase: $(HELPSOURCE)/vim.1 $(DEST_VIM) $(VIMTARGET) $(DEST_RT) \
 	cd $(DEST_AUTO)/dist; chmod $(HELPMOD) *.vim
 	cd $(AUTOSOURCE)/xml; $(INSTALL_DATA) *.vim $(DEST_AUTO)/xml
 	cd $(DEST_AUTO)/xml; chmod $(HELPMOD) *.vim
+	cd $(AUTOSOURCE)/zig; $(INSTALL_DATA) *.vim $(DEST_AUTO)/zig
+	cd $(DEST_AUTO)/zig; chmod $(HELPMOD) *.vim
 # install the standard import files
 	cd $(IMPORTSOURCE)/dist; $(INSTALL_DATA) *.vim $(DEST_IMPORT)/dist
 	cd $(DEST_IMPORT)/dist; chmod $(HELPMOD) *.vim
@@ -2675,7 +2677,7 @@ $(DESTDIR)$(exec_prefix) $(DEST_BIN) \
 		$(DEST_IND) $(DEST_FTP) \
 		$(DEST_LANG) $(DEST_KMAP) $(DEST_COMP) $(DEST_MACRO) \
 		$(DEST_PACK) $(DEST_TOOLS) $(DEST_TUTOR) $(DEST_SPELL) \
-		$(DEST_AUTO) $(DEST_AUTO)/dist $(DEST_AUTO)/xml \
+		$(DEST_AUTO) $(DEST_AUTO)/dist $(DEST_AUTO)/xml $(DEST_AUTO)/zig \
 		$(DEST_IMPORT) $(DEST_IMPORT)/dist $(DEST_PLUG):
 	$(MKDIR_P) $@
 	-chmod $(DIRMOD) $@
@@ -2864,10 +2866,10 @@ uninstall_runtime:
 	-rmdir $(DEST_SYN) $(DEST_IND)
 	-rm -rf $(DEST_FTP)/*.vim $(DEST_FTP)/README.txt $(DEST_FTP)/logtalk.dict
 	-rm -f $(DEST_AUTO)/*.vim $(DEST_AUTO)/README.txt
-	-rm -f $(DEST_AUTO)/dist/*.vim $(DEST_AUTO)/xml/*.vim
+	-rm -f $(DEST_AUTO)/dist/*.vim $(DEST_AUTO)/xml/*.vim $(DEST_AUTO)/zig/*.vim
 	-rm -f $(DEST_IMPORT)/dist/*.vim
 	-rm -f $(DEST_PLUG)/*.vim $(DEST_PLUG)/README.txt
-	-rmdir $(DEST_FTP) $(DEST_AUTO)/dist $(DEST_AUTO)/xml $(DEST_AUTO)
+	-rmdir $(DEST_FTP) $(DEST_AUTO)/dist $(DEST_AUTO)/xml $(DEST_AUTO)/zig $(DEST_AUTO)
 	-rmdir $(DEST_IMPORT)/dist $(DEST_IMPORT)
 	-rmdir $(DEST_PLUG) $(DEST_RT)
 #	This will fail when other Vim versions are installed, no worries.
diff --git a/src/autocmd.c b/src/autocmd.c
index c3b2519d2a..c7348e4b13 100644
--- a/src/autocmd.c
+++ b/src/autocmd.c
@@ -2019,7 +2019,6 @@ apply_autocmds_group(
     int		did_save_redobuff = FALSE;
     save_redo_T	save_redo;
     int		save_KeyTyped = KeyTyped;
-    int		save_did_emsg;
     ESTACK_CHECK_DECLARATION;
 
     /*
@@ -2311,12 +2310,14 @@ apply_autocmds_group(
 	else
 	    check_lnums_nested(TRUE);
 
-	save_did_emsg = did_emsg;
+	int save_did_emsg = did_emsg;
+	int save_ex_pressedreturn = get_pressedreturn();
 
 	do_cmdline(NULL, getnextac, (void *)&patcmd,
 				     DOCMD_NOWAIT|DOCMD_VERBOSE|DOCMD_REPEAT);
 
 	did_emsg += save_did_emsg;
+	set_pressedreturn(save_ex_pressedreturn);
 
 	if (nesting == 1)
 	    // restore cursor and topline, unless they were changed
diff --git a/src/buffer.c b/src/buffer.c
index 047f37b8b8..b32fb82b04 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -502,7 +502,7 @@ can_unload_buffer(buf_T *buf)
  * It can be:
  * 0			buffer becomes hidden
  * DOBUF_UNLOAD		buffer is unloaded
- * DOBUF_DELETE		buffer is unloaded and removed from buffer list
+ * DOBUF_DEL		buffer is unloaded and removed from buffer list
  * DOBUF_WIPE		buffer is unloaded and really deleted
  * DOBUF_WIPE_REUSE	idem, and add to buf_reuse list
  * When doing all but the first one on the current buffer, the caller should
@@ -5118,14 +5118,6 @@ build_stl_str_hl(
 	    STRMOVE(s + 1, p);
 	    *s = '<';
 
-	    // Fill up for half a double-wide character.
-	    while (++width < maxwidth)
-	    {
-		s = s + STRLEN(s);
-		MB_CHAR2BYTES(fillchar, s);
-		*s = NUL;
-	    }
-
 	    --n;	// count the '<'
 	    for (; l < itemcnt; l++)
 	    {
@@ -5134,6 +5126,14 @@ build_stl_str_hl(
 		else
 		    stl_items[l].stl_start = s;
 	    }
+
+	    // Fill up for half a double-wide character.
+	    while (++width < maxwidth)
+	    {
+		s = s + STRLEN(s);
+		MB_CHAR2BYTES(fillchar, s);
+		*s = NUL;
+	    }
 	}
 	width = maxwidth;
     }
diff --git a/src/crypt.c b/src/crypt.c
index daa608ae68..9f0f68a2d4 100644
--- a/src/crypt.c
+++ b/src/crypt.c
@@ -1267,6 +1267,13 @@ crypt_sodium_buffer_decode(
 }
 
 # if defined(FEAT_SODIUM) || defined(PROTO)
+    void
+crypt_sodium_lock_key(char_u *key)
+{
+    if (sodium_init() >= 0)
+	sodium_mlock(key, STRLEN(key));
+}
+
     int
 crypt_sodium_munlock(void *const addr, const size_t len)
 {
diff --git a/src/errors.h b/src/errors.h
index 1c0c5416f1..fcd5487d9c 100644
--- a/src/errors.h
+++ b/src/errors.h
@@ -1038,6 +1038,8 @@ EXTERN char e_missing_argument_str[]
 	INIT(= N_("E417: Missing argument: %s"));
 EXTERN char e_illegal_value_str[]
 	INIT(= N_("E418: Illegal value: %s"));
+EXTERN char e_im_a_teapot[]
+	INIT(= N_("E418: I'm a teapot"));
 EXTERN char e_fg_color_unknown[]
 	INIT(= N_("E419: FG color unknown"));
 EXTERN char e_bg_color_unknown[]
@@ -1271,6 +1273,8 @@ EXTERN char e_is_not_file_or_writable_device[]
 	INIT(= N_("is not a file or writable device"));
 EXTERN char e_str_is_not_file_or_writable_device[]
 	INIT(= N_("E503: \"%s\" is not a file or writable device"));
+EXTERN char e_coffee_currently_not_available[]
+	INIT(= N_("E503: Coffee is currently not available"));
 	// E504
 EXTERN char e_is_read_only_cannot_override_W_in_cpoptions[]
 	INIT(= N_("is read-only (cannot override: \"W\" in 'cpoptions')"));
diff --git a/src/evalfunc.c b/src/evalfunc.c
index 6d4b72f4dc..cb0c557269 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -45,6 +45,7 @@ static void f_did_filetype(typval_T *argvars, typval_T *rettv);
 static void f_echoraw(typval_T *argvars, typval_T *rettv);
 static void f_empty(typval_T *argvars, typval_T *rettv);
 static void f_environ(typval_T *argvars, typval_T *rettv);
+static void f_err_teapot(typval_T *argvars, typval_T *rettv);
 static void f_escape(typval_T *argvars, typval_T *rettv);
 static void f_eval(typval_T *argvars, typval_T *rettv);
 static void f_eventhandler(typval_T *argvars, typval_T *rettv);
@@ -1880,6 +1881,8 @@ static funcentry_T global_functions[] =
 			ret_number_bool,    f_empty},
     {"environ",		0, 0, 0,	    NULL,
 			ret_dict_string,    f_environ},
+    {"err_teapot",	0, 1, 0,	    NULL,
+			ret_number_bool,    f_err_teapot},
     {"escape",		2, 2, FEARG_1,	    arg2_string,
 			ret_string,	    f_escape},
     {"eval",		1, 1, FEARG_1,	    arg1_string,
@@ -2223,7 +2226,7 @@ static funcentry_T global_functions[] =
     {"matchend",	2, 4, FEARG_1,	    arg24_match_func,
 			ret_number,	    f_matchend},
     {"matchfuzzy",	2, 3, FEARG_1,	    arg3_list_string_dict,
-			ret_list_string,    f_matchfuzzy},
+			ret_list_any,	    f_matchfuzzy},
     {"matchfuzzypos",	2, 3, FEARG_1,	    arg3_list_string_dict,
 			ret_list_any,	    f_matchfuzzypos},
     {"matchlist",	2, 4, FEARG_1,	    arg24_match_func,
@@ -3925,6 +3928,33 @@ f_environ(typval_T *argvars UNUSED, typval_T *rettv)
 #endif
 }
 
+/*
+ * "err_teapot()" function
+ */
+    static void
+f_err_teapot(typval_T *argvars, typval_T *rettv UNUSED)
+{
+    if (argvars[0].v_type != VAR_UNKNOWN)
+    {
+	if (argvars[0].v_type == VAR_STRING)
+	{
+	    char_u *s = tv_get_string_strict(&argvars[0]);
+	    if (s == NULL || *skipwhite(s) == NUL)
+		return;
+	}
+
+	int err = FALSE;
+	int do_503 = eval_expr_to_bool(&argvars[0], &err);
+	if (!err && do_503)
+	{
+	    emsg(_(e_coffee_currently_not_available));
+	    return;
+	}
+    }
+
+    emsg(_(e_im_a_teapot));
+}
+
 /*
  * "escape({string}, {chars})" function
  */
@@ -6494,6 +6524,14 @@ f_has(typval_T *argvars, typval_T *rettv)
 		1
 #else
 		0
+#endif
+		},
+	{":tearoff",
+// same #ifdef as used for ex_tearoff().
+#if defined(FEAT_GUI_MSWIN) && defined(FEAT_MENU) && defined(FEAT_TEAROFF)
+		1
+#else
+		0
 #endif
 		},
 	{NULL, 0}
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index 2cd1696c1a..3581ab6187 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -9856,7 +9856,6 @@ is_loclist_cmd(int cmdidx)
 }
 #endif
 
-#if defined(FEAT_TIMERS) || defined(PROTO)
     int
 get_pressedreturn(void)
 {
@@ -9868,4 +9867,3 @@ set_pressedreturn(int val)
 {
      ex_pressedreturn = val;
 }
-#endif
diff --git a/src/memline.c b/src/memline.c
index 46e7d8a796..cf2dc8c312 100644
--- a/src/memline.c
+++ b/src/memline.c
@@ -424,6 +424,24 @@ ml_open(buf_T *buf)
 }
 
 #if defined(FEAT_CRYPT) || defined(PROTO)
+/*
+ * Swapfile encryption is not supported by XChaCha20.  If this crypt method is
+ * used then disable the swapfile, to avoid plain text being written to disk,
+ * and return TRUE.
+ * Otherwise return FALSE.
+ */
+    static int
+crypt_may_close_swapfile(buf_T *buf, char_u *key, int method)
+{
+    if (crypt_method_is_sodium(method) && *key != NUL)
+    {
+	mf_close_file(buf, TRUE);
+	buf->b_p_swf = FALSE;
+	return TRUE;
+    }
+    return FALSE;
+}
+
 /*
  * Prepare encryption for "buf" for the current key and method.
  */
@@ -440,11 +458,10 @@ ml_set_mfp_crypt(buf_T *buf)
 	// Generate a seed and store it in the memfile.
 	sha2_seed(buf->b_ml.ml_mfp->mf_seed, MF_SEED_LEN, NULL, 0);
     }
-#ifdef FEAT_SODIUM
+# ifdef FEAT_SODIUM
     else if (crypt_method_is_sodium(method_nr))
-	crypt_sodium_randombytes_buf(buf->b_ml.ml_mfp->mf_seed,
-		MF_SEED_LEN);
-#endif
+	crypt_sodium_randombytes_buf(buf->b_ml.ml_mfp->mf_seed, MF_SEED_LEN);
+# endif
 }
 
 /*
@@ -501,16 +518,10 @@ ml_set_crypt_key(
 	return;  // no memfile yet, nothing to do
     old_method = crypt_method_nr_from_name(old_cm);
 
-    // Swapfile encryption is not supported by XChaCha20, therefore disable the
-    // swapfile to avoid plain text being written to disk.
-    if (crypt_method_is_sodium(crypt_get_method_nr(buf))
-						       && *buf->b_p_key != NUL)
-    {
-	// close the swapfile
-	mf_close_file(buf, TRUE);
-	buf->b_p_swf = FALSE;
+#ifdef FEAT_CRYPT
+    if (crypt_may_close_swapfile(buf, buf->b_p_key, crypt_get_method_nr(buf)))
 	return;
-    }
+#endif
 
     // First make sure the swapfile is in a consistent state, using the old
     // key and method.
@@ -2494,6 +2505,12 @@ ml_sync_all(int check_file, int check_char)
 		|| buf->b_ml.ml_mfp->mf_fd < 0)
 	    continue;			    // no file
 
+#ifdef FEAT_CRYPT
+	if (crypt_may_close_swapfile(buf, buf->b_p_key,
+						     crypt_get_method_nr(buf)))
+	    continue;
+#endif
+
 	ml_flush_line(buf);		    // flush buffered line
 					    // flush locked block
 	(void)ml_find_line(buf, (linenr_T)0, ML_FLUSH);
@@ -2551,6 +2568,10 @@ ml_preserve(buf_T *buf, int message)
 	    emsg(_(e_cannot_preserve_there_is_no_swap_file));
 	return;
     }
+#ifdef FEAT_CRYPT
+    if (crypt_may_close_swapfile(buf, buf->b_p_key, crypt_get_method_nr(buf)))
+	return;
+#endif
 
     // We only want to stop when interrupted here, not when interrupted
     // before.
@@ -3626,7 +3647,7 @@ adjust_text_props_for_delete(
     int		idx;
     int		line_start;
     long	line_size;
-    int		this_props_len;
+    int		this_props_len = 0;
     char_u	*text;
     size_t	textlen;
     int		found;
@@ -5571,6 +5592,9 @@ ml_crypt_prepare(memfile_T *mfp, off_T offset, int reading)
     if (*key == NUL)
 	return NULL;
 
+    if (crypt_may_close_swapfile(buf, key, method_nr))
+	return NULL;
+
     if (method_nr == CRYPT_M_ZIP)
     {
 	// For PKzip: Append the offset to the key, so that we use a different
diff --git a/src/move.c b/src/move.c
index ea7d380056..22c37ce285 100644
--- a/src/move.c
+++ b/src/move.c
@@ -2591,17 +2591,20 @@ scroll_cursor_bot(int min_scroll, int set_topbot)
 					(curwin, curwin->w_topline, FALSE);
 	    int skip_lines = 0;
 	    int width1 = curwin->w_width - curwin_col_off();
-	    int width2 = width1 + curwin_col_off2();
-	    // similar formula is used in curs_columns()
-	    if (curwin->w_skipcol > width1)
-		skip_lines += (curwin->w_skipcol - width1) / width2 + 1;
-	    else if (curwin->w_skipcol > 0)
-		skip_lines = 1;
-
-	    top_plines -= skip_lines;
-	    if (top_plines > curwin->w_height)
+	    if (width1 > 0)
 	    {
-		scrolled += (top_plines - curwin->w_height);
+		int width2 = width1 + curwin_col_off2();
+		// similar formula is used in curs_columns()
+		if (curwin->w_skipcol > width1)
+		    skip_lines += (curwin->w_skipcol - width1) / width2 + 1;
+		else if (curwin->w_skipcol > 0)
+		    skip_lines = 1;
+
+		top_plines -= skip_lines;
+		if (top_plines > curwin->w_height)
+		{
+		    scrolled += (top_plines - curwin->w_height);
+		}
 	    }
 	}
     }
diff --git a/src/option.c b/src/option.c
index ca00772b8d..25dc0a810a 100644
--- a/src/option.c
+++ b/src/option.c
@@ -2153,10 +2153,14 @@ do_set_option_numeric(
 	    ((flags & P_VI_DEF) || cp_val) ? VI_DEFAULT : VIM_DEFAULT];
     else if (nextchar == '<')
     {
-	// For 'undolevels' NO_LOCAL_UNDOLEVEL means to
-	// use the global value.
 	if ((long *)varp == &curbuf->b_p_ul && opt_flags == OPT_LOCAL)
+	    // for 'undolevels' NO_LOCAL_UNDOLEVEL means using the global value
 	    value = NO_LOCAL_UNDOLEVEL;
+	else if (opt_flags == OPT_LOCAL
+		    && ((long *)varp == &curwin->w_p_siso
+		     || (long *)varp == &curwin->w_p_so))
+	    // for 'scrolloff'/'sidescrolloff' -1 means using the global value
+	    value = -1;
 	else
 	    value = *(long *)get_varp_scope(&(options[opt_idx]), OPT_GLOBAL);
     }
diff --git a/src/optionstr.c b/src/optionstr.c
index 64efbd883d..032c24009c 100644
--- a/src/optionstr.c
+++ b/src/optionstr.c
@@ -1180,6 +1180,10 @@ did_set_cryptkey(optset_T *args)
 		*curbuf->b_p_cm == NUL ? p_cm : curbuf->b_p_cm);
 	changed_internal();
     }
+# ifdef FEAT_SODIUM
+    if (crypt_method_is_sodium(crypt_get_method_nr(curbuf)))
+       crypt_sodium_lock_key(args->os_newval.string);
+# endif
 
     return NULL;
 }
diff --git a/src/os_amiga.h b/src/os_amiga.h
index 57417137a0..080b01637e 100644
--- a/src/os_amiga.h
+++ b/src/os_amiga.h
@@ -199,7 +199,7 @@ typedef long off_t;
 #endif
 
 #ifndef DFLT_VDIR
-# define DFLT_VDIR	"$VIM/vimfiles/view"	// default for 'viewdir'
+# define DFLT_VDIR	"home:vimfiles/view"	// default for 'viewdir'
 #endif
 
 #ifndef DFLT_MAXMEM
diff --git a/src/os_dos.h b/src/os_dos.h
index f1fcbe6b79..f53434824e 100644
--- a/src/os_dos.h
+++ b/src/os_dos.h
@@ -97,7 +97,7 @@
 #endif
 
 #ifndef DFLT_VDIR
-# define DFLT_VDIR	"$VIM/vimfiles/view"	// default for 'viewdir'
+# define DFLT_VDIR	"$HOME/vimfiles/view"	// default for 'viewdir'
 #endif
 
 #ifndef DFLT_DIR
@@ -105,7 +105,7 @@
 #endif
 
 #define DFLT_ERRORFILE		"errors.err"
-#define DFLT_RUNTIMEPATH	"$HOME/vimfiles,$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after,$HOME/vimfiles/after"
+#define DFLT_RUNTIMEPATH	"$HOME/vimfiles,$VIM/vimfiles,$VIMRUNTIME,$HOME/vimfiles/after,$VIM/vimfiles/after"
 #define CLEAN_RUNTIMEPATH	"$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after"
 
 #define CASE_INSENSITIVE_FILENAME   // ignore case when comparing file names
diff --git a/src/os_unix.c b/src/os_unix.c
index 8f1115a90e..4c3ed15cdd 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -444,7 +444,12 @@ resize_func(int check_only)
     if (check_only)
 	return do_resize;
     while (do_resize)
+    {
+#ifdef FEAT_EVAL
+	ch_log(NULL, "calling handle_resize() in resize_func()");
+#endif
 	handle_resize();
+    }
     return FALSE;
 }
 
@@ -4172,6 +4177,9 @@ mch_get_shellsize(void)
 	{
 	    columns = ws.ws_col;
 	    rows = ws.ws_row;
+#  ifdef FEAT_EVAL
+	    ch_log(NULL, "Got size with TIOCGWINSZ: %ld x %ld", columns, rows);
+#  endif
 	}
     }
 # else // TIOCGWINSZ
@@ -4187,6 +4195,9 @@ mch_get_shellsize(void)
 	{
 	    columns = ts.ts_cols;
 	    rows = ts.ts_lines;
+#  ifdef FEAT_EVAL
+	    ch_log(NULL, "Got size with TIOCGSIZE: %ld x %ld", columns, rows);
+#  endif
 	}
     }
 #  endif // TIOCGSIZE
@@ -4200,9 +4211,19 @@ mch_get_shellsize(void)
     if (columns == 0 || rows == 0 || vim_strchr(p_cpo, CPO_TSIZE) != NULL)
     {
 	if ((p = (char_u *)getenv("LINES")))
+	{
 	    rows = atoi((char *)p);
+#  ifdef FEAT_EVAL
+	    ch_log(NULL, "Got 'lines' from $LINES: %ld", rows);
+#  endif
+	}
 	if ((p = (char_u *)getenv("COLUMNS")))
+	{
 	    columns = atoi((char *)p);
+#  ifdef FEAT_EVAL
+	    ch_log(NULL, "Got 'columns' from $COLUMNS: %ld", columns);
+#  endif
+	}
     }
 
 #ifdef HAVE_TGETENT
@@ -4210,7 +4231,12 @@ mch_get_shellsize(void)
      * 3. try reading "co" and "li" entries from termcap
      */
     if (columns == 0 || rows == 0)
+    {
 	getlinecol(&columns, &rows);
+# ifdef FEAT_EVAL
+	ch_log(NULL, "Got size from termcap: %ld x %ld", columns, rows);
+# endif
+    }
 #endif
 
     /*
@@ -4247,16 +4273,14 @@ mch_report_winsize(int fd, int rows, int cols)
     ws.ws_xpixel = cols * 5;
     ws.ws_ypixel = rows * 10;
     retval = ioctl(tty_fd, TIOCSWINSZ, &ws);
-    ch_log(NULL, "ioctl(TIOCSWINSZ) %s",
-	    retval == 0 ? "success" : "failed");
+    ch_log(NULL, "ioctl(TIOCSWINSZ) %s", retval == 0 ? "success" : "failed");
 # elif defined(TIOCSSIZE)
     struct ttysize ts;
 
     ts.ts_cols = cols;
     ts.ts_lines = rows;
     retval = ioctl(tty_fd, TIOCSSIZE, &ts);
-    ch_log(NULL, "ioctl(TIOCSSIZE) %s",
-	    retval == 0 ? "success" : "failed");
+    ch_log(NULL, "ioctl(TIOCSSIZE) %s", retval == 0 ? "success" : "failed");
 # endif
     if (tty_fd != fd)
 	close(tty_fd);
@@ -6528,7 +6552,12 @@ RealWaitForChar(int fd, long msec, int *check_for_gpm UNUSED, int *interrupted)
 	    // Check whether window has been resized, EINTR may be caused by
 	    // SIGWINCH.
 	    if (do_resize)
+	    {
+#  ifdef FEAT_EVAL
+		ch_log(NULL, "calling handle_resize() in RealWaitForChar()");
+#  endif
 		handle_resize();
+	    }
 
 	    // Interrupted by a signal, need to try again.  We ignore msec
 	    // here, because we do want to check even after a timeout if
diff --git a/src/proto/crypt.pro b/src/proto/crypt.pro
index d599238593..e3ef693c72 100644
--- a/src/proto/crypt.pro
+++ b/src/proto/crypt.pro
@@ -26,6 +26,7 @@ void crypt_check_swapfile_curbuf(void);
 void crypt_check_current_method(void);
 char_u *crypt_get_key(int store, int twice);
 void crypt_append_msg(buf_T *buf);
+void crypt_sodium_lock_key(char_u *key);
 int crypt_sodium_munlock(void *const addr, const size_t len);
 void crypt_sodium_randombytes_buf(void *const buf, const size_t size);
 int crypt_sodium_init(void);
diff --git a/src/testdir/dumps/Test_smoothscroll_zero_bot.dump b/src/testdir/dumps/Test_smoothscroll_zero_bot.dump
new file mode 100644
index 0000000000..c0b716fb86
--- /dev/null
+++ b/src/testdir/dumps/Test_smoothscroll_zero_bot.dump
@@ -0,0 +1,19 @@
+| +0#af5f00255#ffffff0||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+|@+0#4040ff13&||+1#0000000&| +0&&@72
+>@+0#4040ff13&||+1#0000000&| +0&&@72
+|<+3&&| |[+1&&|N|o| |N|a|m|e|]| |[|+|]| @59
+| +0&&@74
diff --git a/src/testdir/runtest.vim b/src/testdir/runtest.vim
index fbc2ae0c9e..5581ad2484 100644
--- a/src/testdir/runtest.vim
+++ b/src/testdir/runtest.vim
@@ -92,6 +92,9 @@ set shellslash
 " Common with all tests on all systems.
 source setup.vim
 
+" Needed for RunningWithValgrind().
+source shared.vim
+
 " For consistency run all tests with 'nocompatible' set.
 " This also enables use of line continuation.
 set nocp viminfo+=nviminfo
@@ -219,12 +222,18 @@ unlet name
 func TestTimeout(id)
   split test.log
   call append(line('$'), '')
-  call append(line('$'), 'Test timed out: ' .. g:testfunc)
+
+  let text = 'Test timed out: ' .. g:testfunc
+  if g:timeout_start > 0
+    let text ..= strftime(' after %s seconds', localtime() - g:timeout_start)
+  endif
+  call append(line('$'), text)
   write
-  call add(v:errors, 'Test timed out: ' . g:testfunc)
+  call add(v:errors, text)
 
   cquit! 42
 endfunc
+let g:timeout_start = 0
 
 func RunTheTest(test)
   let prefix = ''
@@ -237,7 +246,9 @@ func RunTheTest(test)
   if has('timers')
     " No test should take longer than 30 seconds.  If it takes longer we
     " assume we are stuck and need to break out.
-    let test_timeout_timer = timer_start(30000, 'TestTimeout')
+    let test_timeout_timer =
+          \ timer_start(RunningWithValgrind() ? 50000 : 30000, 'TestTimeout')
+    let g:timeout_start = localtime()
   endif
 
   " Avoid stopping at the "hit enter" prompt
@@ -307,6 +318,7 @@ func RunTheTest(test)
 
   if has('timers')
     call timer_stop(test_timeout_timer)
+    let g:timeout_start = 0
   endif
 
   " Clear any autocommands and put back the catch-all for SwapExists.
@@ -371,7 +383,7 @@ func RunTheTest(test)
 
   " close any split windows
   while winnr('$') > 1
-    bwipe!
+    noswapfile bwipe!
   endwhile
 
   " May be editing some buffer, wipe it out.  Then we may end up in another
diff --git a/src/testdir/setup.vim b/src/testdir/setup.vim
index ca94bae275..0e5088ad24 100644
--- a/src/testdir/setup.vim
+++ b/src/testdir/setup.vim
@@ -30,6 +30,10 @@ if 1
   " Avoid storing shell history.
   let $HISTFILE = ""
 
+  " Have current $HOME available as $ORIGHOME.  $HOME is used for option
+  " defaults before we get here, and test_mksession checks that.
+  let $ORIGHOME = $HOME
+
   " Make sure $HOME does not get read or written.
   " It must exist, gnome tries to create $HOME/.gnome2
   let $HOME = getcwd() . '/XfakeHOME'
diff --git a/src/testdir/test_crypt.vim b/src/testdir/test_crypt.vim
index cb94c183e4..8f1041449c 100644
--- a/src/testdir/test_crypt.vim
+++ b/src/testdir/test_crypt.vim
@@ -22,11 +22,11 @@ endif
 
 func Common_head_only(text)
   " This was crashing Vim
-  split Xtest.txt
+  split Xtest_head.txt
   call setline(1, a:text)
   wq
-  call feedkeys(":split Xtest.txt\<CR>foobar\<CR>", "tx")
-  call delete('Xtest.txt')
+  call feedkeys(":split Xtest_head.txt\<CR>foobar\<CR>", "tx")
+  call delete('Xtest_head.txt')
   call assert_match('VimCrypt', getline(1))
   bwipe!
 endfunc
@@ -49,7 +49,7 @@ func Crypt_uncrypt(method)
   " If the blowfish test fails 'cryptmethod' will be 'zip' now.
   call assert_equal(a:method, &cryptmethod)
 
-  split Xtest.txt
+  split Xtest_uncrypt.txt
   let text =<< trim END
   01234567890123456789012345678901234567,
   line 2  foo bar blah,
@@ -60,11 +60,11 @@ func Crypt_uncrypt(method)
   call assert_equal('*****', &key)
   w!
   bwipe!
-  call feedkeys(":split Xtest.txt\<CR>foobar\<CR>", 'xt')
+  call feedkeys(":split Xtest_uncrypt.txt\<CR>foobar\<CR>", 'xt')
   call assert_equal(text, getline(1, 3))
   set key= cryptmethod&
   bwipe!
-  call delete('Xtest.txt')
+  call delete('Xtest_uncrypt.txt')
 endfunc
 
 func Test_crypt_zip()
@@ -105,7 +105,7 @@ func Test_crypt_sodium_v2_startup()
   exe buf .. 'bwipe!'
   call assert_true(filereadable('Xfoo'))
 
-  let buf = RunVimInTerminal('--cmd "set ch=3 cm=xchacha20v2 key=foo" Xfoo', #{rows: 10})
+  let buf = RunVimInTerminal('--cmd "set ch=3 cm=xchacha20v2 key=foo" Xfoo', #{wait_for_ruler: 0, rows: 10})
   call g:TermWait(buf, g:RunningWithValgrind() ? 1000 : 50)
   call StopVimInTerminal(buf)
 
@@ -113,17 +113,17 @@ func Test_crypt_sodium_v2_startup()
 endfunc
 
 func Uncrypt_stable(method, crypted_text, key, uncrypted_text)
-  split Xtest.txt
+  split Xtest_stable.txt
   set bin noeol key= fenc=latin1
   exe "set cryptmethod=" . a:method
   call setline(1, a:crypted_text)
   w!
   bwipe!
   set nobin
-  call feedkeys(":split Xtest.txt\<CR>" . a:key . "\<CR>", 'xt')
+  call feedkeys(":split Xtest_stable.txt\<CR>" . a:key . "\<CR>", 'xt')
   call assert_equal(a:uncrypted_text, getline(1, len(a:uncrypted_text)))
   bwipe!
-  call delete('Xtest.txt')
+  call delete('Xtest_stable.txt')
   set key=
 endfunc
 
@@ -132,13 +132,13 @@ func Uncrypt_stable_xxd(method, hex, key, uncrypted_text, verbose)
     throw 'Skipped: xxd program missing'
   endif
   " use xxd to write the binary content
-  call system(s:xxd_cmd .. ' -r >Xtest.txt', a:hex)
+  call system(s:xxd_cmd .. ' -r >Xtest_stable_xxd.txt', a:hex)
   let cmd = (a:verbose ? ':verbose' : '') ..
-        \ ":split Xtest.txt\<CR>" . a:key . "\<CR>"
+        \ ":split Xtest_stable_xxd.txt\<CR>" . a:key . "\<CR>"
   call feedkeys(cmd, 'xt')
   call assert_equal(a:uncrypted_text, getline(1, len(a:uncrypted_text)))
   bwipe!
-  call delete('Xtest.txt')
+  call delete('Xtest_stable_xxd.txt')
   set key=
 endfunc
 
@@ -354,7 +354,7 @@ endfunc
 func Test_crypt_key_mismatch()
   set cryptmethod=blowfish
 
-  split Xtest.txt
+  split Xtest_mismatch.txt
   call setline(1, 'nothing')
   call feedkeys(":X\<CR>foobar\<CR>nothing\<CR>", 'xt')
   call assert_match("Keys don't match!", execute(':2messages'))
@@ -392,4 +392,24 @@ func Test_crypt_set_key_changes_buffer()
   call delete('Xtest1.txt')
 endfunc
 
+func Test_crypt_set_key_segfault()
+  CheckFeature sodium
+
+  defer delete('Xtest2.txt')
+  new Xtest2.txt
+  call setline(1, 'nothing')
+  set cryptmethod=xchacha20
+  set key=foobar
+  w
+  new Xtest3
+  put ='other content'
+  setl modified
+  sil! preserve
+  bwipe!
+
+  set cryptmethod&
+  set key=
+  bwipe!
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_ex_mode.vim b/src/testdir/test_ex_mode.vim
index d03ec8f2d8..59c28f3836 100644
--- a/src/testdir/test_ex_mode.vim
+++ b/src/testdir/test_ex_mode.vim
@@ -239,6 +239,12 @@ func Test_ex_mode_errors()
 
   au! CmdLineEnter
   delfunc ExEnterFunc
+
+  au CmdlineEnter * :
+  call feedkeys("gQecho 1\r", 'xt')
+
+  au! CmdlineEnter
+
   quit
 endfunc
 
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index 41b9106136..e2f2f045bb 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -1,5 +1,16 @@
 " Test :setfiletype
 
+func Test_backup_strip()
+  filetype on
+  let fname = 'Xdetect.js~~~~~~~~~~~'
+  call writefile(['one', 'two', 'three'], fname, 'D')
+  exe 'edit ' .. fname
+  call assert_equal('javascript', &filetype)
+
+  bwipe!
+  filetype off
+endfunc
+
 func Test_detection()
   filetype on
   augroup filetypedetect
@@ -495,6 +506,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     pccts: ['file.g'],
     pcmk: ['file.pcmk'],
     pdf: ['file.pdf'],
+    pem: ['file.pem', 'file.cer', 'file.crt', 'file.csr'],
     perl: ['file.plx', 'file.al', 'file.psgi', 'gitolite.rc', '.gitolite.rc', 'example.gitolite.rc', '.latexmkrc', 'latexmkrc'],
     pf: ['pf.conf'],
     pfmain: ['main.cf', 'main.cf.proto'],
@@ -590,7 +602,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     services: ['/etc/services', 'any/etc/services'],
     setserial: ['/etc/serial.conf', 'any/etc/serial.conf'],
     sexplib: ['file.sexp'],
-    sh: ['.bashrc', 'file.bash', '/usr/share/doc/bash-completion/filter.sh', '/etc/udev/cdsymlinks.conf', 'any/etc/udev/cdsymlinks.conf'],
+    sh: ['.bashrc', '.bash_profile', '.bash-profile', '.bash_logout', '.bash-logout', '.bash_aliases', '.bash-aliases', '/tmp/bash-fc-3Ozjlw', '/tmp/bash-fc.3Ozjlw', 'PKGBUILD', 'APKBUILD', 'file.bash', '/usr/share/doc/bash-completion/filter.sh', '/etc/udev/cdsymlinks.conf', 'any/etc/udev/cdsymlinks.conf'],
     sieve: ['file.siv', 'file.sieve'],
     sil: ['file.sil'],
     simula: ['file.sim'],
@@ -790,6 +802,7 @@ def s:GetFilenameChecks(): dict<list<string>>
     zimbu: ['file.zu'],
     zimbutempl: ['file.zut'],
     zir: ['file.zir'],
+    zserio: ['file.zs'],
     zsh: ['.zprofile', '/etc/zprofile', '.zfbfmarks', 'file.zsh',
           '.zcompdump', '.zlogin', '.zlogout', '.zshenv', '.zshrc',
           '.zcompdump-file', '.zlog', '.zlog-file', '.zsh', '.zsh-file',
@@ -802,7 +815,7 @@ enddef
 def s:GetFilenameCaseChecks(): dict<list<string>>
   return {
     modula2: ['file.DEF'],
-    bzl: ['file.BUILD', 'BUILD'],
+    bzl: ['file.BUILD', 'BUILD', 'BUCK'],
   }
 enddef
 
diff --git a/src/testdir/test_functions.vim b/src/testdir/test_functions.vim
index a17c19e179..750c4a2bf1 100644
--- a/src/testdir/test_functions.vim
+++ b/src/testdir/test_functions.vim
@@ -30,10 +30,13 @@ func Test_has()
     call assert_equal(1, or(has('ttyin'), 1))
     call assert_equal(0, and(has('ttyout'), 0))
     call assert_equal(1, has('multi_byte_encoding'))
+    call assert_equal(0, has(':tearoff'))
   endif
   call assert_equal(1, has('vcon', 1))
   call assert_equal(1, has('mouse_gpm_enabled', 1))
 
+  call assert_equal(has('gui_win32') && has('menu'), has(':tearoff'))
+
   call assert_equal(0, has('nonexistent'))
   call assert_equal(0, has('nonexistent', 1))
 
@@ -86,6 +89,17 @@ func Test_empty()
   call assert_fails("call empty(test_unknown())", ['E340:', 'E685:'])
 endfunc
 
+func Test_err_teapot()
+  call assert_fails('call err_teapot()', "E418: I'm a teapot")
+  call assert_fails('call err_teapot(0)', "E418: I'm a teapot")
+  call assert_fails('call err_teapot(v:false)', "E418: I'm a teapot")
+
+  call assert_fails('call err_teapot("1")', "E503: Coffee is currently not available")
+  call assert_fails('call err_teapot(v:true)', "E503: Coffee is currently not available")
+  let expr = 1
+  call assert_fails('call err_teapot(expr)', "E503: Coffee is currently not available")
+endfunc
+
 func Test_test_void()
   call assert_fails('echo 1 == test_void()', 'E1031:')
   call assert_fails('echo 1.0 == test_void()', 'E1031:')
diff --git a/src/testdir/test_mksession.vim b/src/testdir/test_mksession.vim
index 1ce5a28f5e..aa291821ec 100644
--- a/src/testdir/test_mksession.vim
+++ b/src/testdir/test_mksession.vim
@@ -1262,4 +1262,18 @@ func Test_mkview_manual_fold()
   bw!
 endfunc
 
+" Test default 'viewdir' value
+func Test_mkview_default_home()
+  if has('win32')
+    " use escape() to handle backslash path separators
+    call assert_match('^' .. escape($ORIGHOME, '\') .. '/vimfiles', &viewdir)
+  elseif has('unix')
+    call assert_match('^' .. $ORIGHOME .. '/.vim', &viewdir)
+  elseif has('amiga')
+    call assert_match('^home:vimfiles', &viewdir)
+  elseif has('mac')
+    call assert_match('^' .. $VIM .. '/vimfiles', &viewdir)
+  endif
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_options.vim b/src/testdir/test_options.vim
index d49fa9bcef..63c2f9f78a 100644
--- a/src/testdir/test_options.vim
+++ b/src/testdir/test_options.vim
@@ -954,12 +954,16 @@ func Test_local_scrolloff()
   wincmd w
   call assert_equal(5, &so)
   wincmd w
+  call assert_equal(3, &so)
   setlocal so<
   call assert_equal(5, &so)
+  setglob so=8
+  call assert_equal(8, &so)
+  call assert_equal(-1, &l:so)
   setlocal so=0
   call assert_equal(0, &so)
   setlocal so=-1
-  call assert_equal(5, &so)
+  call assert_equal(8, &so)
 
   call assert_equal(7, &siso)
   setlocal siso=3
@@ -967,12 +971,16 @@ func Test_local_scrolloff()
   wincmd w
   call assert_equal(7, &siso)
   wincmd w
+  call assert_equal(3, &siso)
   setlocal siso<
   call assert_equal(7, &siso)
+  setglob siso=4
+  call assert_equal(4, &siso)
+  call assert_equal(-1, &l:siso)
   setlocal siso=0
   call assert_equal(0, &siso)
   setlocal siso=-1
-  call assert_equal(7, &siso)
+  call assert_equal(4, &siso)
 
   close
   set so&
diff --git a/src/testdir/test_scroll_opt.vim b/src/testdir/test_scroll_opt.vim
index 460416665d..81670cdd7a 100644
--- a/src/testdir/test_scroll_opt.vim
+++ b/src/testdir/test_scroll_opt.vim
@@ -833,4 +833,26 @@ func Test_smoothscroll_multi_skipcol()
   call StopVimInTerminal(buf)
 endfunc
 
+" this was dividing by zero bug in scroll_cursor_bot
+func Test_smoothscroll_zero_width_scroll_cursor_bot()
+  CheckScreendump
+
+  let lines =<< trim END
+      silent normal yy
+      silent normal 19p
+      set cpoptions+=n
+      vsplit
+      vertical resize 0
+      set foldcolumn=1
+      set number
+      set smoothscroll
+      silent normal 20G
+  END
+  call writefile(lines, 'XSmoothScrollZeroBot', 'D')
+  let buf = RunVimInTerminal('-u NONE -S XSmoothScrollZeroBot', #{rows: 19})
+  call VerifyScreenDump(buf, 'Test_smoothscroll_zero_bot', {})
+
+  call StopVimInTerminal(buf)
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_tabline.vim b/src/testdir/test_tabline.vim
index 09adf2f68f..3cba2aab47 100644
--- a/src/testdir/test_tabline.vim
+++ b/src/testdir/test_tabline.vim
@@ -133,7 +133,7 @@ func Test_tabline_empty_group()
   tabnew
   redraw!
 
-  tabclose
+  bw!
   set tabline=
 endfunc
 
@@ -202,4 +202,28 @@ func Test_tabline_showcmd()
   call StopVimInTerminal(buf)
 endfunc
 
+func TruncTabLine()
+  return '%1T口口%2Ta' .. repeat('b', &columns - 4) .. '%999X%#TabLine#c'
+endfunc
+
+" Test 'tabline' with truncated double-width label at the start.
+func Test_tabline_truncated_double_width()
+  tabnew
+  redraw
+  call assert_match('X$', Screenline(1))
+  let attr_TabLineFill = screenattr(1, &columns - 1)
+  let attr_TabLine = screenattr(1, &columns)
+  call assert_notequal(attr_TabLine, attr_TabLineFill)
+
+  set tabline=%!TruncTabLine()
+  redraw
+  call assert_equal('<a' .. repeat('b', &columns - 4) .. 'c', Screenline(1))
+  call assert_equal(attr_TabLineFill, screenattr(1, &columns - 2))
+  call assert_equal(attr_TabLine, screenattr(1, &columns - 1))
+  call assert_equal(attr_TabLine, screenattr(1, &columns))
+
+  bw!
+  set tabline=
+endfunc
+
 " vim: shiftwidth=2 sts=2 expandtab
diff --git a/src/testdir/test_vim9_builtin.vim b/src/testdir/test_vim9_builtin.vim
index b76db7d635..23a68358cb 100644
--- a/src/testdir/test_vim9_builtin.vim
+++ b/src/testdir/test_vim9_builtin.vim
@@ -2821,6 +2821,15 @@ def Test_matchfuzzy()
   v9.CheckDefAndScriptFailure(['matchfuzzy([], 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
   v9.CheckDefAndScriptFailure(['matchfuzzy([], "a", [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 3'])
   matchfuzzy(['abc', 'xyz'], '')->assert_equal([])
+  var lines =<< trim END
+    var items = [{name: 'xyz', id: 1}, {name: 'def', id: 2},
+                 {name: 'abc', id: 3}]
+    var l: list<dict<any>> = matchfuzzy(items, 'abc', {key: 'name'})
+    assert_equal([{name: 'abc', id: 3}], l)
+    var k: list<string> = matchfuzzy(['one', 'two', 'who'], 'o')
+    assert_equal(['one', 'two', 'who'], k)
+  END
+  v9.CheckDefAndScriptSuccess(lines)
 enddef
 
 def Test_matchfuzzypos()
@@ -2828,6 +2837,15 @@ def Test_matchfuzzypos()
   v9.CheckDefAndScriptFailure(['matchfuzzypos([], 1)'], ['E1013: Argument 2: type mismatch, expected string but got number', 'E1174: String required for argument 2'])
   v9.CheckDefAndScriptFailure(['matchfuzzypos([], "a", [])'], ['E1013: Argument 3: type mismatch, expected dict<any> but got list<unknown>', 'E1206: Dictionary required for argument 3'])
   matchfuzzypos(['abc', 'xyz'], '')->assert_equal([[], [], []])
+  var lines =<< trim END
+    var items = [{name: 'xyz', id: 1}, {name: 'def', id: 2},
+                 {name: 'abc', id: 3}]
+    var l: list<dict<any>> = matchfuzzypos(items, 'abc', {key: 'name'})[0]
+    assert_equal([{name: 'abc', id: 3}], l)
+    var k: list<string> = matchfuzzypos(['one', 'two', 'who'], 'o')[0]
+    assert_equal(['one', 'two', 'who'], k)
+  END
+  v9.CheckDefAndScriptSuccess(lines)
 enddef
 
 def Test_matchlist()
diff --git a/src/testdir/test_vim9_class.vim b/src/testdir/test_vim9_class.vim
index 00b843206e..f1acdf38ef 100644
--- a/src/testdir/test_vim9_class.vim
+++ b/src/testdir/test_vim9_class.vim
@@ -838,6 +838,23 @@ def Test_class_member()
   END
   v9.CheckScriptSuccess(lines)
 
+  # using static class member twice
+  lines =<< trim END
+      vim9script
+
+      class HTML
+        static author: string = 'John Doe'
+
+        static def MacroSubstitute(s: string): string
+          return substitute(s, '{{author}}', author, 'gi')
+        enddef
+      endclass
+
+      assert_equal('some text', HTML.MacroSubstitute('some text'))
+      assert_equal('some text', HTML.MacroSubstitute('some text'))
+  END
+  v9.CheckScriptSuccess(lines)
+
   # access private member in lambda
   lines =<< trim END
       vim9script
diff --git a/src/version.c b/src/version.c
index 6cc406e71b..81ac53d048 100644
--- a/src/version.c
+++ b/src/version.c
@@ -710,6 +710,78 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1676,
+/**/
+    1675,
+/**/
+    1674,
+/**/
+    1673,
+/**/
+    1672,
+/**/
+    1671,
+/**/
+    1670,
+/**/
+    1669,
+/**/
+    1668,
+/**/
+    1667,
+/**/
+    1666,
+/**/
+    1665,
+/**/
+    1664,
+/**/
+    1663,
+/**/
+    1662,
+/**/
+    1661,
+/**/
+    1660,
+/**/
+    1659,
+/**/
+    1658,
+/**/
+    1657,
+/**/
+    1656,
+/**/
+    1655,
+/**/
+    1654,
+/**/
+    1653,
+/**/
+    1652,
+/**/
+    1651,
+/**/
+    1650,
+/**/
+    1649,
+/**/
+    1648,
+/**/
+    1647,
+/**/
+    1646,
+/**/
+    1645,
+/**/
+    1644,
+/**/
+    1643,
+/**/
+    1642,
+/**/
+    1641,
 /**/
     1640,
 /**/
diff --git a/src/vim9execute.c b/src/vim9execute.c
index 921e2ca053..eb663a1096 100644
--- a/src/vim9execute.c
+++ b/src/vim9execute.c
@@ -3967,8 +3967,8 @@ exec_instructions(ectx_T *ectx)
 		    if (GA_GROW_FAILS(&ectx->ec_stack, 1))
 			goto theend;
 		    classmember_T *cm = &iptr->isn_arg.classmember;
-		    *STACK_TV_BOT(0) =
-				    cm->cm_class->class_members_tv[cm->cm_idx];
+		    copy_tv(cm->cm_class->class_members_tv + cm->cm_idx,
+							      STACK_TV_BOT(0));
 		    ++ectx->ec_stack.ga_len;
 		}
 		break;