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+" Vim script language tests
+" Author:	Servatius Brandt <Servatius.Brandt@fujitsu-siemens.com>
+" Last Change:	2004 Apr 03
+
+"-------------------------------------------------------------------------------
+" Test environment							    {{{1
+"-------------------------------------------------------------------------------
+
+
+" Adding new tests easily.						    {{{2
+"
+" Writing new tests is eased considerably with the following functions and
+" abbreviations (see "Commands for recording the execution path", "Automatic
+" argument generation").
+"
+" To get the abbreviations, execute the command
+"
+"    :let test49_set_env = 1 | source test49.vim
+"
+" To get them always (from src/testdir), put a line
+"
+"    au! BufRead test49.vim let test49_set_env = 1 | source test49.vim
+"
+" into the local .vimrc file in the src/testdir directory.
+"
+if exists("test49_set_env") && test49_set_env
+
+    " Automatic argument generation for the test environment commands.
+
+    function! Xsum()
+	let addend = substitute(getline("."), '^.*"\s*X:\s*\|^.*', '', "")
+	" Evaluate arithmetic expression.
+	if addend != ""
+	    exec "let g:Xsum = g:Xsum + " . addend
+	endif
+    endfunction
+
+    function! Xcheck()
+	let g:Xsum=0
+	?XpathINIT?,.call Xsum()
+	exec "norm A "
+	return g:Xsum
+    endfunction
+
+    iab Xcheck Xcheck<Space><C-R>=Xcheck()<CR><C-O>x
+
+    function! Xcomment(num)
+	let str = ""
+	let tabwidth = &sts ? &sts : &ts
+	let tabs = (48+tabwidth - a:num - virtcol(".")) / tabwidth
+	while tabs > 0
+	    let str = str . "\t"
+	    let tabs = tabs - 1
+	endwhile
+	let str = str . '" X:'
+	return str
+    endfunction
+
+    function! Xloop()
+	let back = line(".") . "|norm" . virtcol(".") . "|"
+	norm 0
+	let last = search('X\(loop\|path\)INIT\|Xloop\>', "bW")
+	exec back
+	let theline = getline(last)
+	if theline =~ 'X\(loop\|path\)INIT'
+	    let num = 1
+	else
+	    let num = 2 * substitute(theline, '.*Xloop\s*\(\d\+\).*', '\1', "")
+	endif
+	?X\(loop\|path\)INIT?
+	    \s/\(XloopINIT!\=\s*\d\+\s\+\)\@<=\(\d\+\)/\=2*submatch(2)/
+	exec back
+	exec "norm a "
+	return num . Xcomment(strlen(num))
+    endfunction
+
+    iab Xloop Xloop<Space><C-R>=Xloop()<CR><C-O>x
+
+    function! Xpath(loopinit)
+	let back = line(".") . "|norm" . virtcol(".") . "|"
+	norm 0
+	let last = search('XpathINIT\|Xpath\>\|XloopINIT', "bW")
+	exec back
+	let theline = getline(last)
+	if theline =~ 'XpathINIT'
+	    let num = 1
+	elseif theline =~ 'Xpath\>'
+	    let num = 2 * substitute(theline, '.*Xpath\s*\(\d\+\).*', '\1', "")
+	else
+	    let pattern = '.*XloopINIT!\=\s*\(\d\+\)\s*\(\d\+\).*'
+	    let num = substitute(theline, pattern, '\1', "")
+	    let factor = substitute(theline, pattern, '\2', "")
+	    " The "<C-O>x" from the "Xpath" iab and the character triggering its
+	    " expansion are in the input buffer.  Save and clear typeahead so
+	    " that it is not read away by the call to "input()" below.  Restore
+	    " afterwards.
+	    call inputsave()
+	    let loops = input("Number of iterations in previous loop? ")
+	    call inputrestore()
+	    while (loops > 0)
+		let num = num * factor
+		let loops = loops - 1
+	    endwhile
+	endif
+	exec "norm a "
+	if a:loopinit
+	    return num . " 1"
+	endif
+	return num . Xcomment(strlen(num))
+    endfunction
+
+    iab Xpath Xpath<Space><C-R>=Xpath(0)<CR><C-O>x
+    iab XloopINIT XloopINIT<Space><C-R>=Xpath(1)<CR><C-O>x
+
+    " Also useful (see ExtraVim below):
+    aug ExtraVim
+	au!
+	au  BufEnter <sfile> syn region ExtraVim
+		    \ start=+^if\s\+ExtraVim(.*)+ end=+^endif+
+		    \ transparent keepend
+	au  BufEnter <sfile> syn match ExtraComment /^"/
+		    \ contained containedin=ExtraVim
+	au  BufEnter <sfile> hi link ExtraComment vimComment
+    aug END
+
+    aug Xpath
+	au  BufEnter <sfile> syn keyword Xpath
+		    \ XpathINIT Xpath XloopINIT Xloop XloopNEXT Xcheck Xout
+	au  BufEnter <sfile> hi link Xpath Special
+    aug END
+
+    do BufEnter <sfile>
+
+    " Do not execute the tests when sourcing this file for getting the functions
+    " and abbreviations above, which are intended for easily adding new test
+    " cases; they are not needed for test execution.  Unlet the variable
+    " controlling this so that an explicit ":source" command for this file will
+    " execute the tests.
+    unlet test49_set_env
+    finish
+
+endif
+
+
+" Commands for recording the execution path.				    {{{2
+"
+" The Xpath/Xloop commands can be used for computing the eXecution path by
+" adding (different) powers of 2 from those script lines, for which the
+" execution should be checked.  Xloop provides different addends for each
+" execution of a loop.  Permittable values are 2^0 to 2^30, so that 31 execution
+" points (multiply counted inside loops) can be tested.
+"
+" Note that the arguments of the following commands can be generated
+" automatically, see below.
+"
+" Usage:								    {{{3
+"
+"   - Use XpathINIT at the beginning of the test.
+"
+"   - Use Xpath to check if a line is executed.
+"     Argument: power of 2 (decimal).
+"
+"   - To check multiple execution of loops use Xloop for automatically
+"     computing Xpath values:
+"
+"	- Use XloopINIT before the loop.
+"	  Two arguments:
+"		- the first Xpath value (power of 2) to be used (Xnext),
+"		- factor for computing a new Xnext value when reexecuting a loop
+"		  (by a ":continue" or ":endwhile"); this should be 2^n where
+"		  n is the number of Xloop commands inside the loop.
+"	  If XloopINIT! is used, the first execution of XloopNEXT is
+"	  a no-operation.
+"
+"       - Use Xloop inside the loop:
+"	  One argument:
+"		The argument and the Xnext value are multiplied to build the
+"		next Xpath value.  No new Xnext value is prepared.  The argument
+"		should be 2^(n-1) for the nth Xloop command inside the loop.
+"		If the loop has only one Xloop command, the argument can be
+"		ommitted (default: 1).
+"
+"	- Use XloopNEXT before ":continue" and ":endwhile".  This computes a new
+"	  Xnext value for the next execution of the loop by multiplying the old
+"	  one with the factor specified in the XloopINIT command.  No Argument.
+"	  Alternatively, when XloopINIT! is used, a single XloopNEXT at the
+"	  beginning of the loop can be used.
+"
+"     Nested loops are not supported.
+"
+"   - Use Xcheck at end of each test.  It prints the test number, the expected
+"     execution path value, the test result ("OK" or "FAIL"), and, if the tests
+"     fails, the actual execution path.
+"     One argument:
+"	    Expected Xpath/Xloop sum for the correct execution path.
+"	    In order that this value can be computed automatically, do the
+"	    following: For each line in the test with an Xpath and Xloop
+"	    command, add a comment starting with "X:" and specifying an
+"	    expression that evaluates to the value contributed by this line to
+"	    the correct execution path.  (For copying an Xpath argument of at
+"	    least two digits into the comment, press <C-P>.)  At the end of the
+"	    test, just type "Xcheck" and press <Esc>.
+"
+"   - In order to add additional information to the test output file, use the
+"     Xout command.  Argument(s) like ":echo".
+"
+" Automatic argument generation:					    {{{3
+"
+"   The arguments of the Xpath, XloopINIT, Xloop, and Xcheck commands can be
+"   generated automatically, so that new tests can easily be written without
+"   mental arithmetic.  The Xcheck argument is computed from the "X:" comments
+"   of the preceding Xpath and Xloop commands.  See the commands and
+"   abbreviations at the beginning of this file.
+"
+" Implementation:							    {{{3
+"     XpathINIT, Xpath, XloopINIT, Xloop, XloopNEXT, Xcheck, Xout.
+"
+" The variants for existing g:ExtraVimResult are needed when executing a script
+" in an extra Vim process, see ExtraVim below.
+
+" EXTRA_VIM_START - do not change or remove this line.
+
+com!		    XpathINIT	let g:Xpath = 0
+
+if exists("g:ExtraVimResult")
+    com! -count -bar    Xpath	exec "!echo <count> >>" . g:ExtraVimResult
+else
+    com! -count -bar    Xpath	let g:Xpath = g:Xpath + <count>
+endif
+
+com! -count -nargs=1 -bang
+		  \ XloopINIT	let g:Xnext = <count> |
+				    \ let g:Xfactor = <args> |
+				    \ let g:Xskip = strlen("<bang>")
+
+if exists("g:ExtraVimResult")
+    com! -count=1 -bar  Xloop	exec "!echo " . (g:Xnext * <count>) . " >>" .
+				    \ g:ExtraVimResult
+else
+    com! -count=1 -bar  Xloop	let g:Xpath = g:Xpath + g:Xnext * <count>
+endif
+
+com!		    XloopNEXT	let g:Xnext = g:Xnext *
+				    \ (g:Xskip ? 1 : g:Xfactor) |
+				    \ let g:Xskip = 0
+
+let @r = ""
+let Xtest = 1
+com! -count	    Xcheck	let Xresult = "*** Test " .
+				    \ (Xtest<10?"  ":Xtest<100?" ":"") .
+				    \ Xtest . ": " . (
+				    \ (Xpath==<count>) ? "OK (".Xpath.")" :
+					\ "FAIL (".Xpath." instead of <count>)"
+				    \ ) |
+				    \ let @R = Xresult . "\n" |
+				    \ echo Xresult |
+				    \ let Xtest = Xtest + 1
+
+if exists("g:ExtraVimResult")
+    com! -nargs=+    Xout	exec "exec \"!echo @R:'\" ."
+				    \ 'substitute(substitute("' . <args> .
+				    \ '", "' . "'" . '", ' . "'" . '&\\&&' . "'"
+				    \ . ', "g"), "\n", "@NL@", "g")'
+				    \ ". \"' >>\" . g:ExtraVimResult"
+else
+    com! -nargs=+    Xout	exec 'let @R = "--- Test ' .
+				    \ (g:Xtest<10?"  ":g:Xtest<100?" ":"") .
+				    \ g:Xtest . ": " .
+				    \ '" . substitute("' . <args> .
+				    \ '", "\n", "&\t      ", "g") . "\n"'
+endif
+
+" Switch off storing of lines for undoing changes.  Speeds things up a little.
+set undolevels=-1
+
+" EXTRA_VIM_STOP - do not change or remove this line.
+
+
+" ExtraVim() - Run a script file in an extra Vim process.		    {{{2
+"
+" This is useful for testing immediate abortion of the script processing due to
+" an error in a command dynamically enclosed by a :try/:tryend region or when an
+" exception is thrown but not caught or when an interrupt occurs.  It can also
+" be used for testing :finish.
+"
+" An interrupt location can be specified by an "INTERRUPT" comment.  A number
+" telling how often this location is reached (in a loop or in several function
+" calls) should be specified as argument.  When missing, once per script
+" invocation or function call is assumed.  INTERRUPT locations are tested by
+" setting a breakpoint in that line and using the ">quit" debug command when
+" the breakpoint is reached.  A function for which an INTERRUPT location is
+" specified must be defined before calling it (or executing it as a script by
+" using ExecAsScript below).
+"
+" This function is only called in normal modus ("g:ExtraVimResult" undefined).
+"
+" Tests to be executed as an extra script should be written as follows:
+"
+"	column 1			column 1
+"	|				|
+"	v				v
+"
+"	XpathINIT			XpathINIT
+"	if ExtraVim()			if ExtraVim()
+"	    ...				"   ...
+"	    ...				"   ...
+"	endif				endif
+"	Xcheck <number>			Xcheck <number>
+"
+" Double quotes in column 1 are removed before the script is executed.
+" They should be used if the test has unbalanced conditionals (:if/:endif,
+" :while:/endwhile, :try/:endtry) or for a line with a syntax error.  The
+" extra script may use Xpath, XloopINIT, Xloop, XloopNEXT, and Xout as usual.
+"
+" A file name may be specified as argument.  All messages of the extra Vim
+" process are then redirected to the file.  An existing file is overwritten.
+"
+let ExtraVimCount = 0
+let ExtraVimBase = expand("<sfile>")
+let ExtraVimTestEnv = ""
+"
+function! ExtraVim(...)
+    " Count how often this function is called.
+    let g:ExtraVimCount = g:ExtraVimCount + 1
+
+    " Disable folds to prevent that the ranges in the ":write" commands below
+    " are extended up to the end of a closed fold.  This also speeds things up
+    " considerably.
+    set nofoldenable
+
+    " Open a buffer for this test script and copy the test environment to
+    " a temporary file.  Take account of parts relevant for the extra script
+    " execution only.
+    let current_buffnr = bufnr("%")
+    execute "view +1" g:ExtraVimBase
+    if g:ExtraVimCount == 1
+	let g:ExtraVimTestEnv = tempname()
+	execute "/E" . "XTRA_VIM_START/+,/E" . "XTRA_VIM_STOP/-w"
+		    \ g:ExtraVimTestEnv "|']+"
+	execute "/E" . "XTRA_VIM_START/+,/E" . "XTRA_VIM_STOP/-w >>"
+		    \ g:ExtraVimTestEnv "|']+"
+	execute "/E" . "XTRA_VIM_START/+,/E" . "XTRA_VIM_STOP/-w >>"
+		    \ g:ExtraVimTestEnv "|']+"
+	execute "/E" . "XTRA_VIM_START/+,/E" . "XTRA_VIM_STOP/-w >>"
+		    \ g:ExtraVimTestEnv "|']+"
+    endif
+
+    " Start the extra Vim script with a ":source" command for the test
+    " environment.  The source line number where the extra script will be
+    " appended, needs to be passed as variable "ExtraVimBegin" to the script.
+    let extra_script = tempname()
+    exec "!echo 'source " . g:ExtraVimTestEnv . "' >" . extra_script
+    let extra_begin = 1
+
+    " Starting behind the test environment, skip over the first g:ExtraVimCount
+    " occurrences of "if ExtraVim()" and copy the following lines up to the
+    " matching "endif" to the extra Vim script.
+    execute "/E" . "ND_OF_TEST_ENVIRONMENT/"
+    exec 'norm ' . g:ExtraVimCount . '/^\s*if\s\+ExtraVim(.*)/+' . "\n"
+    execute ".,/^endif/-write >>" . extra_script
+
+    " Open a buffer for the extra Vim script, delete all ^", and write the
+    " script if was actually modified.
+    execute "edit +" . (extra_begin + 1) extra_script
+    ,$s/^"//e
+    update
+
+    " Count the INTERRUPTs and build the breakpoint and quit commands.
+    let breakpoints = ""
+    let debug_quits = ""
+    let in_func = 0
+    exec extra_begin
+    while search(
+	    \ '"\s*INTERRUPT\h\@!\|^\s*fu\%[nction]\>!\=\s*\%(\u\|s:\)\w*\s*(\|'
+	    \ . '^\s*\\\|^\s*endf\%[unction]\>\|'
+	    \ . '\%(^\s*fu\%[nction]!\=\s*\)\@<!\%(\u\|s:\)\w*\s*(\|'
+	    \ . 'ExecAsScript\s\+\%(\u\|s:\)\w*',
+	    \ "W") > 0
+	let theline = getline(".")
+	if theline =~ '^\s*fu'
+	    " Function definition.
+	    let in_func = 1
+	    let func_start = line(".")
+	    let func_name = substitute(theline,
+		\ '^\s*fu\%[nction]!\=\s*\(\%(\u\|s:\)\w*\).*', '\1', "")
+	    let func_conts = 0
+	elseif theline =~ '^\s*\\'
+	    if in_func
+		let func_conts = func_conts + 1
+	    endif
+	elseif theline =~ '^\s*endf'
+	    " End of function definition.
+	    let in_func = 0
+	else
+	    let finding = substitute(theline, '.*\(\%' . col(".") . 'c.*\)',
+		\ '\1', "")
+	    if finding =~ '^"\s*INTERRUPT\h\@!'
+		" Interrupt comment.  Compose as many quit commands as
+		" specified.
+		let cnt = substitute(finding,
+		    \ '^"\s*INTERRUPT\s*\(\d*\).*$', '\1', "")
+		let quits = ""
+		while cnt > 0
+		    " Use "\r" rather than "\n" to separate the quit commands.
+		    " "\r" is not interpreted as command separator by the ":!"
+		    " command below but works to separate commands in the
+		    " external vim.
+		    let quits = quits . "q\r"
+		    let cnt = cnt - 1
+		endwhile
+		if in_func
+		    " Add the function breakpoint and note the number of quits
+		    " to be used, if specified, or one for every call else.
+		    let breakpoints = breakpoints . " -c 'breakadd func " .
+			\ (line(".") - func_start - func_conts) . " " .
+			\ func_name . "'"
+		    if quits != ""
+			let debug_quits = debug_quits . quits
+		    elseif !exists("quits{func_name}")
+			let quits{func_name} = "q\r"
+		    else
+			let quits{func_name} = quits{func_name} . "q\r"
+		    endif
+		else
+		    " Add the file breakpoint and the quits to be used for it.
+		    let breakpoints = breakpoints . " -c 'breakadd file " .
+			\ line(".") . " " . extra_script . "'"
+		    if quits == ""
+			let quits = "q\r"
+		    endif
+		    let debug_quits = debug_quits . quits
+		endif
+	    else
+		" Add the quits to be used for calling the function or executing
+		" it as script file.
+		if finding =~ '^ExecAsScript'
+		    " Sourcing function as script.
+		    let finding = substitute(finding,
+			\ '^ExecAsScript\s\+\(\%(\u\|s:\)\w*\).*', '\1', "")
+		else
+		    " Function call.
+		    let finding = substitute(finding,
+			\ '^\(\%(\u\|s:\)\w*\).*', '\1', "")
+		endif
+		if exists("quits{finding}")
+		    let debug_quits = debug_quits . quits{finding}
+		endif
+	    endif
+	endif
+    endwhile
+
+    " Close the buffer for the script and create an (empty) resultfile.
+    bwipeout
+    let resultfile = tempname()
+    exec "!>" . resultfile
+
+    " Run the script in an extra vim.  Switch to extra modus by passing the
+    " resultfile in ExtraVimResult.  Redirect messages to the file specified as
+    " argument if any.  Use ":debuggreedy" so that the commands provided on the
+    " pipe are consumed at the debug prompt.  Use "-N" to enable command-line
+    " contiunation ("C" in 'cpo').  Add "nviminfo" to 'viminfo' to avoid
+    " messing up the user's viminfo file.
+    let redirect = a:0 ?
+	\ " -c 'au VimLeave * redir END' -c 'redir\\! >" . a:1 . "'" : ""
+    exec "!echo '" . debug_quits . "q' | ../vim -u NONE -N -Xes" . redirect .
+	\ " -c 'debuggreedy|set viminfo+=nviminfo'" .
+	\ " -c 'let ExtraVimBegin = " . extra_begin . "'" .
+	\ " -c 'let ExtraVimResult = \"" . resultfile . "\"'" . breakpoints .
+	\ " -S " . extra_script
+
+    " Build the resulting sum for resultfile and add it to g:Xpath.  Add Xout
+    " information provided by the extra Vim process to the test output.
+    let sum = 0
+    exec "edit" resultfile
+    let line = 1
+    while line <= line("$")
+	let theline = getline(line)
+	if theline =~ '^@R:'
+	    exec 'Xout "' . substitute(substitute(
+		\ escape(escape(theline, '"'), '\"'),
+		\ '^@R:', '', ""), '@NL@', "\n", "g") . '"'
+	else
+	    let sum = sum + getline(line)
+	endif
+	let line = line + 1
+    endwhile
+    bwipeout
+    let g:Xpath = g:Xpath + sum
+
+    " Delete the extra script and the resultfile.
+    call delete(extra_script)
+    call delete(resultfile)
+
+    " Switch back to the buffer that was active when this function was entered.
+    exec "buffer" current_buffnr
+
+    " Return 0.  This protects extra scripts from being run in the main Vim
+    " process.
+    return 0
+endfunction
+
+
+" ExtraVimThrowpoint() - Relative throwpoint in ExtraVim script		    {{{2
+"
+" Evaluates v:throwpoint and returns the throwpoint relativ to the beginning of
+" an ExtraVim script as passed by ExtraVim() in ExtraVimBegin.
+"
+" EXTRA_VIM_START - do not change or remove this line.
+function! ExtraVimThrowpoint()
+    if !exists("g:ExtraVimBegin")
+	Xout "ExtraVimThrowpoint() used outside ExtraVim() script."
+	return v:throwpoint
+    endif
+
+    if v:throwpoint =~ '^function\>'
+	return v:throwpoint
+    endif
+
+    return "line " .
+	\ (substitute(v:throwpoint, '.*, line ', '', "") - g:ExtraVimBegin) .
+	\ " of ExtraVim() script"
+endfunction
+" EXTRA_VIM_STOP - do not change or remove this line.
+
+
+" MakeScript() - Make a script file from a function.			    {{{2
+"
+" Create a script that consists of the body of the function a:funcname.
+" Replace any ":return" by a ":finish", any argument variable by a global
+" variable, and and every ":call" by a ":source" for the next following argument
+" in the variable argument list.  This function is useful if similar tests are
+" to be made for a ":return" from a function call or a ":finish" in a script
+" file.
+"
+" In order to execute a function specifying an INTERRUPT location (see ExtraVim)
+" as a script file, use ExecAsScript below.
+"
+" EXTRA_VIM_START - do not change or remove this line.
+function! MakeScript(funcname, ...)
+    let script = tempname()
+    execute "redir! >" . script
+    execute "function" a:funcname
+    redir END
+    execute "edit" script
+    " Delete the "function" and the "endfunction" lines.  Do not include the
+    " word "function" in the pattern since it might be translated if LANG is
+    " set.  When MakeScript() is being debugged, this deletes also the debugging
+    " output of its line 3 and 4.
+    exec '1,/.*' . a:funcname . '(.*)/d'
+    /^\d*\s*endfunction\>/,$d
+    %s/^\d*//e
+    %s/return/finish/e
+    %s/\<a:\(\h\w*\)/g:\1/ge
+    normal gg0
+    let cnt = 0
+    while search('\<call\s*\%(\u\|s:\)\w*\s*(.*)', 'W') > 0
+	let cnt = cnt + 1
+	s/\<call\s*\%(\u\|s:\)\w*\s*(.*)/\='source ' . a:{cnt}/
+    endwhile
+    g/^\s*$/d
+    write
+    bwipeout
+    return script
+endfunction
+" EXTRA_VIM_STOP - do not change or remove this line.
+
+
+" ExecAsScript - Source a temporary script made from a function.	    {{{2
+"
+" Make a temporary script file from the function a:funcname, ":source" it, and
+" delete it afterwards.
+"
+" When inside ":if ExtraVim()", add a file breakpoint for each INTERRUPT
+" location specified in the function.
+"
+" EXTRA_VIM_START - do not change or remove this line.
+function! ExecAsScript(funcname)
+    " Make a script from the function passed as argument.
+    let script = MakeScript(a:funcname)
+
+    " When running in an extra Vim process, add a file breakpoint for each
+    " function breakpoint set when the extra Vim process was invoked by
+    " ExtraVim().
+    if exists("g:ExtraVimResult")
+	let bplist = tempname()
+	execute "redir! >" . bplist
+	breaklist
+	redir END
+	execute "edit" bplist
+	" Get the line number from the function breakpoint.  Works also when
+	" LANG is set.
+	execute 'v/^\s*\d\+\s\+func\s\+' . a:funcname . '\s.*/d'
+	%s/^\s*\d\+\s\+func\s\+\%(\u\|s:\)\w*\s\D*\(\d*\).*/\1/e
+	let cnt = 0
+	while cnt < line("$")
+	    let cnt = cnt + 1
+	    if getline(cnt) != ""
+		execute "breakadd file" getline(cnt) script
+	    endif
+	endwhile
+	bwipeout!
+	call delete(bplist)
+    endif
+
+    " Source and delete the script.
+    exec "source" script
+    call delete(script)
+endfunction
+
+com! -nargs=1 -bar ExecAsScript call ExecAsScript(<f-args>)
+" EXTRA_VIM_STOP - do not change or remove this line.
+
+
+" END_OF_TEST_ENVIRONMENT - do not change or remove this line.
+
+
+"-------------------------------------------------------------------------------
+" Test 1:   :endwhile in function					    {{{1
+"
+"	    Detect if a broken loop is (incorrectly) reactivated by the
+"	    :endwhile.  Use a :return to prevent an endless loop, and make
+"	    this test first to get a meaningful result on an error before other
+"	    tests will hang.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! F()
+    Xpath 1					" X: 1
+    let first = 1
+    XloopINIT 2 8
+    while 1
+	Xloop 1					" X: 2	    + 0 * 16
+	if first
+	    Xloop 2				" X: 4	    + 0 * 32
+	    let first = 0
+	    XloopNEXT
+	    break
+	else
+	    Xloop 4				" X: 0	    + 0 * 64
+	    return
+	endif
+    endwhile
+endfunction
+
+call F()
+Xpath 128					" X: 128
+
+function! G()
+    Xpath 256					" X: 256    + 0 * 2048
+    let first = 1
+    XloopINIT 512 8
+    while 1
+	Xloop 1					" X: 512    + 0 * 4096
+	if first
+	    Xloop 2				" X: 1024   + 0 * 8192
+	    let first = 0
+	    XloopNEXT
+	    break
+	else
+	    Xloop 4				" X: 0	    + 0 * 16384
+	    return
+	endif
+	if 1	" unmatched :if
+    endwhile
+endfunction
+
+call G()
+Xpath 32768					" X: 32768
+
+Xcheck 34695
+
+" Leave F and G for execution as scripts in the next test.
+
+
+"-------------------------------------------------------------------------------
+" Test 2:   :endwhile in script						    {{{1
+"
+"	    Detect if a broken loop is (incorrectly) reactivated by the
+"	    :endwhile.  Use a :finish to prevent an endless loop, and place
+"	    this test before others that might hang to get a meaningful result
+"	    on an error.
+"
+"	    This test executes the bodies of the functions F and G from the
+"	    previous test as script files (:return replaced by :finish).
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+ExecAsScript F					" X: 1 + 2 + 4
+Xpath 128					" X: 128
+
+ExecAsScript G					" X: 256 + 512 + 1024
+Xpath 32768					" X: 32768
+
+unlet first
+delfunction F
+delfunction G
+
+Xcheck 34695
+
+
+"-------------------------------------------------------------------------------
+" Test 3:   :if, :elseif, :while, :continue, :break			    {{{1
+"-------------------------------------------------------------------------------
+
+XpathINIT
+if 1
+    Xpath 1					" X: 1
+    let loops = 3
+    XloopINIT 2 512
+    while loops > -1	    " main loop: loops == 3, 2, 1 (which breaks)
+	if loops <= 0
+	    let break_err = 1
+	    let loops = -1
+	else					"    3:  2:      1:
+	    Xloop 1				" X: 2 + 2*512 + 2*512*512
+	endif
+	if (loops == 2)
+	    while loops == 2 " dummy loop
+		Xloop 2				" X:     4*512
+		let loops = loops - 1
+		continue    " stop dummy loop
+		Xloop 4				" X:     0
+	    endwhile
+	    XloopNEXT
+	    continue	    " continue main loop
+	    Xloop 8				" X:     0
+	elseif (loops == 1)
+	    let p = 1
+	    while p	    " dummy loop
+		Xloop 16			" X:		 32*512*512
+		let p = 0
+		break	    " break dummy loop
+		Xloop 32			" X:		 0
+	    endwhile
+	    Xloop 64				" X:		 128*512*512
+	    unlet p
+	    break	    " break main loop
+	    Xloop 128				" X:		 0
+	endif
+	if (loops > 0)
+	    Xloop 256				" X: 512
+	endif
+	while loops == 3    " dummy loop
+	    let loops = loops - 1
+	endwhile	    " end dummy loop
+	XloopNEXT
+    endwhile		    " end main loop
+    Xpath 268435456				" X: 1024*512*512
+else
+    Xpath 536870912				" X: 0
+endif
+Xpath 1073741824				" X: 4096*512*512
+if exists("break_err")
+    " The Xpath command does not accept 2^31 (negative); add explicitly:
+    let Xpath = Xpath + 2147483648		" X: 0
+    unlet break_err
+endif
+
+unlet loops
+
+Xcheck 1384648195
+
+
+"-------------------------------------------------------------------------------
+" Test 4:   :return							    {{{1
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! F()
+    if 1
+	Xpath 1					" X: 1
+	let loops = 3
+	XloopINIT 2 16
+	while loops > 0				"    3:  2:     1:
+	    Xloop 1				" X: 2 + 2*16 + 0*16*16
+	    if (loops == 2)
+		Xloop 2				" X:     4*16
+		return
+		Xloop 4				" X:     0
+	    endif
+	    Xloop 8				" X: 16
+	    let loops = loops - 1
+	    XloopNEXT
+	endwhile
+	Xpath 8192				" X: 0
+    else
+	Xpath 16384				" X: 0
+    endif
+endfunction
+
+call F()
+Xpath 32768					" X: 8*16*16*16
+
+Xcheck 32883
+
+" Leave F for execution as a script in the next test.
+
+
+"-------------------------------------------------------------------------------
+" Test 5:   :finish							    {{{1
+"
+"	    This test executes the body of the function F from the previous test
+"	    as a script file (:return replaced by :finish).
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+ExecAsScript F					" X: 1 + 2 + 2*16 + 4*16 + 16
+Xpath 32768					" X: 32768
+
+unlet loops
+delfunction F
+
+Xcheck 32883
+
+
+"-------------------------------------------------------------------------------
+" Test 6:   Defining functions in :while loops				    {{{1
+"
+"	     Functions can be defined inside other functions.  An inner function
+"	     gets defined when the outer function is executed.  Functions may
+"	     also be defined inside while loops.  Expressions in braces for
+"	     defining the function name are allowed.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    " The command CALL collects the argument of all its invocations in "calls"
+    " when used from a function (that is, when the global variable "calls" needs
+    " the "g:" prefix).  This is to check that the function code is skipped when
+    " the function is defined.  For inner functions, do so only if the outer
+    " function is not being executed.
+    "
+    let calls = ""
+    com! -nargs=1 CALL
+		\ if !exists("calls") && !exists("outer") |
+		\ let g:calls = g:calls . <args> |
+		\ endif
+
+
+    XloopINIT! 1 16
+
+    let i = 0
+    while i < 3
+
+	XloopNEXT
+	let i = i + 1
+
+	if i == 1
+	    Xloop 1				" X: 1
+	    function! F1(arg)
+		CALL a:arg
+		let outer = 1
+
+		XloopINIT! 4096 4
+		let j = 0
+		while j < 1
+		    XloopNEXT
+		    Xloop 1			" X: 4096
+		    let j = j + 1
+		    function! G1(arg)
+			CALL a:arg
+		    endfunction
+		    Xloop 2			" X: 8192
+		endwhile
+	    endfunction
+	    Xloop 2				" X: 2
+
+	    continue
+	endif
+
+	Xloop 4					" X: 4 * (16 + 256)
+	function! F{i}(i, arg)
+	    CALL a:arg
+	    let outer = 1
+
+	    XloopINIT! 16384 4
+	    if a:i == 3
+		XloopNEXT
+		XloopNEXT
+		XloopNEXT
+	    endif
+	    let k = 0
+	    while k < 3
+		XloopNEXT
+		Xloop 1				" X: 16384*(1+4+16+64+256+1024)
+		let k = k + 1
+		function! G{a:i}{k}(arg)
+		    CALL a:arg
+		endfunction
+		Xloop 2				" X: 32768*(1+4+16+64+256+1024)
+	    endwhile
+	endfunction
+	Xloop 8					" X: 8 * (16 + 256)
+
+    endwhile
+
+    if exists("*G1")
+	Xpath 67108864				" X: 0
+    endif
+    if exists("*F1")
+	call F1("F1")
+	if exists("*G1")
+	    call G1("G1")
+	endif
+    endif
+
+    if exists("G21") || exists("G21") || exists("G21")
+	Xpath 134217728				" X: 0
+    endif
+    if exists("*F2")
+	call F2(2, "F2")
+	if exists("*G21")
+	    call G21("G21")
+	endif
+	if exists("*G22")
+	    call G22("G22")
+	endif
+	if exists("*G23")
+	    call G23("G23")
+	endif
+    endif
+
+    if exists("G31") || exists("G31") || exists("G31")
+	Xpath 268435456				" X: 0
+    endif
+    if exists("*F3")
+	call F3(3, "F3")
+	if exists("*G31")
+	    call G31("G31")
+	endif
+	if exists("*G32")
+	    call G32("G32")
+	endif
+	if exists("*G33")
+	    call G33("G33")
+	endif
+    endif
+
+    Xpath 536870912				" X: 536870912
+
+    if calls != "F1G1F2G21G22G23F3G31G32G33"
+	Xpath 1073741824			" X: 0
+	Xout "calls is" calls
+    endif
+
+    delfunction F1
+    delfunction G1
+    delfunction F2
+    delfunction G21
+    delfunction G22
+    delfunction G23
+    delfunction G31
+    delfunction G32
+    delfunction G33
+
+endif
+
+Xcheck 603978947
+
+
+"-------------------------------------------------------------------------------
+" Test 7:   Continuing on errors outside functions			    {{{1
+"
+"	    On an error outside a function, the script processing continues
+"	    at the line following the outermost :endif or :endwhile.  When not
+"	    inside an :if or :while, the script processing continues at the next
+"	    line.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if 1
+    Xpath 1					" X: 1
+    while 1
+	Xpath 2					" X: 2
+	asdf
+	Xpath 4					" X: 0
+	break
+    endwhile | Xpath 8				" X: 0
+    Xpath 16					" X: 0
+endif | Xpath 32				" X: 0
+Xpath 64					" X: 64
+
+while 1
+    Xpath 128					" X: 128
+    if 1
+	Xpath 256				" X: 256
+	asdf
+	Xpath 512				" X: 0
+    endif | Xpath 1024				" X: 0
+    Xpath 2048					" X: 0
+    break
+endwhile | Xpath 4096				" X: 0
+Xpath 8192					" X: 8192
+
+asdf
+Xpath 16384					" X: 16384
+
+asdf | Xpath 32768				" X: 0
+Xpath 65536					" X: 65536
+
+Xcheck 90563
+
+
+"-------------------------------------------------------------------------------
+" Test 8:   Aborting and continuing on errors inside functions		    {{{1
+"
+"	    On an error inside a function without the "abort" attribute, the
+"	    script processing continues at the next line (unless the error was
+"	    in a :return command).  On an error inside a function with the
+"	    "abort" attribute, the function is aborted and the script processing
+"	    continues after the function call; the value -1 is returned then.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! F()
+    if 1
+	Xpath 1					" X: 1
+	while 1
+	    Xpath 2				" X: 2
+	    asdf
+	    Xpath 4				" X: 4
+	    asdf | Xpath 8			" X: 0
+	    Xpath 16				" X: 16
+	    break
+	endwhile
+	Xpath 32				" X: 32
+    endif | Xpath 64				" X: 64
+    Xpath 128					" X: 128
+
+    while 1
+	Xpath 256				" X: 256
+	if 1
+	    Xpath 512				" X: 512
+	    asdf
+	    Xpath 1024				" X: 1024
+	    asdf | Xpath 2048			" X: 0
+	    Xpath 4096				" X: 4096
+	endif
+	Xpath 8192				" X: 8192
+	break
+    endwhile | Xpath 16384			" X: 16384
+    Xpath 32768					" X: 32768
+
+    return novar		" returns (default return value 0)
+    Xpath 65536					" X: 0
+    return 1			" not reached
+endfunction
+
+function! G() abort
+    if 1
+	Xpath 131072				" X: 131072
+	while 1
+	    Xpath 262144			" X: 262144
+	    asdf		" returns -1
+	    Xpath 524288			" X: 0
+	    break
+	endwhile
+	Xpath 1048576				" X: 0
+    endif | Xpath 2097152			" X: 0
+    Xpath Xpath 4194304				" X: 0
+
+    return -4			" not reached
+endfunction
+
+function! H() abort
+    while 1
+	Xpath 8388608				" X: 8388608
+	if 1
+	    Xpath 16777216			" X: 16777216
+	    asdf		" returns -1
+	    Xpath 33554432			" X: 0
+	endif
+	Xpath 67108864				" X: 0
+	break
+    endwhile | Xpath 134217728			" X: 0
+    Xpath 268435456				" X: 0
+
+    return -4			" not reached
+endfunction
+
+" Aborted functions (G and H) return -1.
+let sum = (F() + 1) - 4*G() - 8*H()
+Xpath 536870912					" X: 536870912
+if sum != 13
+    Xpath 1073741824				" X: 0
+    Xout "sum is" sum
+endif
+
+unlet sum
+delfunction F
+delfunction G
+delfunction H
+
+Xcheck 562493431
+
+
+"-------------------------------------------------------------------------------
+" Test 9:   Continuing after aborted functions				    {{{1
+"
+"	    When a function with the "abort" attribute is aborted due to an
+"	    error, the next function back in the call hierarchy without an
+"	    "abort" attribute continues; the value -1 is returned then.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! F() abort
+    Xpath 1					" X: 1
+    let result = G()	" not aborted
+    Xpath 2					" X: 2
+    if result != 2
+	Xpath 4					" X: 0
+    endif
+    return 1
+endfunction
+
+function! G()		" no abort attribute
+    Xpath 8					" X: 8
+    if H() != -1	" aborted
+	Xpath 16				" X: 0
+    endif
+    Xpath 32					" X: 32
+    return 2
+endfunction
+
+function! H() abort
+    Xpath 64					" X: 64
+    call I()		" aborted
+    Xpath 128					" X: 0
+    return 4
+endfunction
+
+function! I() abort
+    Xpath 256					" X: 256
+    asdf		" error
+    Xpath 512					" X: 0
+    return 8
+endfunction
+
+if F() != 1
+    Xpath 1024					" X: 0
+endif
+
+delfunction F
+delfunction G
+delfunction H
+delfunction I
+
+Xcheck 363
+
+
+"-------------------------------------------------------------------------------
+" Test 10:  :if, :elseif, :while argument parsing			    {{{1
+"
+"	    A '"' or '|' in an argument expression must not be mixed up with
+"	    a comment or a next command after a bar.  Parsing errors should
+"	    be recognized.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! MSG(enr, emsg)
+    let english = v:lang == "C" || v:lang =~ '^[Ee]n'
+    if a:enr == ""
+	Xout "TODO: Add message number for:" a:emsg
+	let v:errmsg = ":" . v:errmsg
+    endif
+    let match = 1
+    if v:errmsg !~ '^'.a:enr.':' || (english && v:errmsg !~ a:emsg)
+	let match = 0
+	if v:errmsg == ""
+	    Xout "Message missing."
+	else
+	    let v:errmsg = escape(v:errmsg, '"')
+	    Xout "Unexpected message:" v:errmsg
+	endif
+    endif
+    return match
+endfunction
+
+if 1 || strlen("\"") | Xpath 1			" X: 1
+    Xpath 2					" X: 2
+endif
+Xpath 4						" X: 4
+
+if 0
+elseif 1 || strlen("\"") | Xpath 8		" X: 8
+    Xpath 16					" X: 16
+endif
+Xpath 32					" X: 32
+
+while 1 || strlen("\"") | Xpath 64		" X: 64
+    Xpath 128					" X: 128
+    break
+endwhile
+Xpath 256					" X: 256
+
+let v:errmsg = ""
+if 1 ||| strlen("\"") | Xpath 512		" X: 0
+    Xpath 1024					" X: 0
+endif
+Xpath 2048					" X: 2048
+if !MSG('E15', "Invalid expression")
+    Xpath 4096					" X: 0
+endif
+
+let v:errmsg = ""
+if 0
+elseif 1 ||| strlen("\"") | Xpath 8192		" X: 0
+    Xpath 16384					" X: 0
+endif
+Xpath 32768					" X: 32768
+if !MSG('E15', "Invalid expression")
+    Xpath 65536					" X: 0
+endif
+
+let v:errmsg = ""
+while 1 ||| strlen("\"") | Xpath 131072		" X: 0
+    Xpath 262144				" X: 0
+    break
+endwhile
+Xpath 524288					" X: 524288
+if !MSG('E15', "Invalid expression")
+    Xpath 1048576				" X: 0
+endif
+
+delfunction MSG
+
+Xcheck 559615
+
+
+"-------------------------------------------------------------------------------
+" Test 11:  :if, :elseif, :while argument evaluation after abort	    {{{1
+"
+"	    When code is skipped over due to an error, the boolean argument to
+"	    an :if, :elseif, or :while must not be evaluated.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let calls = 0
+
+function! P(num)
+    let g:calls = g:calls + a:num   " side effect on call
+    return 0
+endfunction
+
+if 1
+    Xpath 1					" X: 1
+    asdf		" error
+    Xpath 2					" X: 0
+    if P(1)		" should not be called
+	Xpath 4					" X: 0
+    elseif !P(2)	" should not be called
+	Xpath 8					" X: 0
+    else
+	Xpath 16				" X: 0
+    endif
+    Xpath 32					" X: 0
+    while P(4)		" should not be called
+	Xpath 64				" X: 0
+    endwhile
+    Xpath 128					" X: 0
+endif
+
+if calls % 2
+    Xpath 256					" X: 0
+endif
+if (calls/2) % 2
+    Xpath 512					" X: 0
+endif
+if (calls/4) % 2
+    Xpath 1024					" X: 0
+endif
+Xpath 2048					" X: 2048
+
+unlet calls
+delfunction P
+
+Xcheck 2049
+
+
+"-------------------------------------------------------------------------------
+" Test 12:  Expressions in braces in skipped code			    {{{1
+"
+"	    In code skipped over due to an error or inactive conditional,
+"	    an expression in braces as part of a variable or function name
+"	    should not be evaluated.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+XloopINIT 1 8
+
+function! NULL()
+    Xloop 1					" X: 0
+    return 0
+endfunction
+
+function! ZERO()
+    Xloop 2					" X: 0
+    return 0
+endfunction
+
+function! F0()
+    Xloop 4					" X: 0
+endfunction
+
+function! F1(arg)
+    Xpath 4096					" X: 0
+endfunction
+
+let V0 = 1
+
+Xpath 8192					" X: 8192
+echo 0 ? F{NULL() + V{ZERO()}}() : 1
+XloopNEXT
+
+Xpath 16384					" X: 16384
+if 0
+    Xpath 32768					" X: 0
+    call F{NULL() + V{ZERO()}}()
+endif
+XloopNEXT
+
+Xpath 65536					" X: 65536
+if 1
+    asdf		" error
+    Xpath 131072				" X: 0
+    call F1(F{NULL() + V{ZERO()}}())
+endif
+XloopNEXT
+
+Xpath 262144					" X: 262144
+if 1
+    asdf		" error
+    Xpath 524288				" X: 0
+    call F{NULL() + V{ZERO()}}()
+endif
+
+Xcheck 352256
+
+
+"-------------------------------------------------------------------------------
+" Test 13:  Failure in argument evaluation for :while			    {{{1
+"
+"	    A failure in the expression evaluation for the condition of a :while
+"	    causes the whole :while loop until the matching :endwhile being
+"	    ignored.  Continuation is at the next following line.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+Xpath 1						" X: 1
+while asdf
+    Xpath 2					" X: 0
+    while 1
+	Xpath 4					" X: 0
+	break
+    endwhile
+    Xpath 8					" X: 0
+    break
+endwhile
+Xpath 16					" X: 16
+
+while asdf | Xpath 32 | endwhile | Xpath 64	" X: 0
+Xpath 128					" X: 128
+
+Xcheck 145
+
+
+"-------------------------------------------------------------------------------
+" Test 14:  Failure in argument evaluation for :if			    {{{1
+"
+"	    A failure in the expression evaluation for the condition of an :if
+"	    does not cause the corresponding :else or :endif being matched to
+"	    a previous :if/:elseif.  Neither of both branches of the failed :if
+"	    are executed.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+XloopINIT 1 256
+
+function! F()
+    Xloop 1					" X: 1	    + 256 * 1
+    let x = 0
+    if x		" false
+	Xloop 2					" X: 0	    + 256 * 0
+    elseif !x		" always true
+	Xloop 4					" X: 4	    + 256 * 4
+	let x = 1
+	if g:boolvar	" possibly undefined
+	    Xloop 8				" X: 8	    + 256 * 0
+	else
+	    Xloop 16				" X: 0	    + 256 * 0
+	endif
+	Xloop 32				" X: 32	    + 256 * 32
+    elseif x		" never executed
+	Xloop 64				" X: 0	    + 256 * 0
+    endif
+    Xloop 128					" X: 128    + 256 * 128
+endfunction
+
+let boolvar = 1
+call F()
+
+XloopNEXT
+unlet boolvar
+call F()
+
+delfunction F
+
+Xcheck 42413
+
+
+"-------------------------------------------------------------------------------
+" Test 15:  Failure in argument evaluation for :if (bar)		    {{{1
+"
+"	    Like previous test, except that the failing :if ... | ... | :endif
+"	    is in a single line.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+XloopINIT 1 256
+
+function! F()
+    Xloop 1					" X: 1	    + 256 * 1
+    let x = 0
+    if x		" false
+	Xloop 2					" X: 0	    + 256 * 0
+    elseif !x		" always true
+	Xloop 4					" X: 4	    + 256 * 4
+	let x = 1
+	if g:boolvar | Xloop 8 | else | Xloop 16 | endif    " X: 8
+	Xloop 32				" X: 32	    + 256 * 32
+    elseif x		" never executed
+	Xloop 64				" X: 0	    + 256 * 0
+    endif
+    Xloop 128					" X: 128    + 256 * 128
+endfunction
+
+let boolvar = 1
+call F()
+
+XloopNEXT
+unlet boolvar
+call F()
+
+delfunction F
+
+Xcheck 42413
+
+
+"-------------------------------------------------------------------------------
+" Test 16:  Double :else or :elseif after :else				    {{{1
+"
+"	    Multiple :elses or an :elseif after an :else are forbidden.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! F() abort
+    if 0
+	Xpath 1					" X: 0
+    else
+	Xpath 2					" X: 2
+    else		" aborts function
+	Xpath 4					" X: 0
+    endif
+endfunction
+
+function! G() abort
+    if 0
+	Xpath 8					" X: 0
+    else
+	Xpath 16				" X: 16
+    elseif 1		" aborts function
+	Xpath 32				" X: 0
+    else
+	Xpath 64				" X: 0
+    endif
+endfunction
+
+function! H() abort
+    if 0
+	Xpath 128				" X: 0
+    elseif 0
+	Xpath 256				" X: 0
+    else
+	Xpath 512				" X: 512
+    else		" aborts function
+	Xpath 1024				" X: 0
+    endif
+endfunction
+
+function! I() abort
+    if 0
+	Xpath 2048				" X: 0
+    elseif 0
+	Xpath 4096				" X: 0
+    else
+	Xpath 8192				" X: 8192
+    elseif 1		" aborts function
+	Xpath 16384				" X: 0
+    else
+	Xpath 32768				" X: 0
+    endif
+endfunction
+
+call F()
+call G()
+call H()
+call I()
+
+delfunction F
+delfunction G
+delfunction H
+delfunction I
+
+Xcheck 8722
+
+
+"-------------------------------------------------------------------------------
+" Test 17:  Nesting of unmatched :if or :endif inside a :while		    {{{1
+"
+"	    The :while/:endwhile takes precedence in nesting over an unclosed
+"	    :if or an unopened :endif.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! MSG(enr, emsg)
+    let english = v:lang == "C" || v:lang =~ '^[Ee]n'
+    if a:enr == ""
+	Xout "TODO: Add message number for:" a:emsg
+	let v:errmsg = ":" . v:errmsg
+    endif
+    let match = 1
+    if v:errmsg !~ '^'.a:enr.':' || (english && v:errmsg !~ a:emsg)
+	let match = 0
+	if v:errmsg == ""
+	    Xout "Message missing."
+	else
+	    let v:errmsg = escape(v:errmsg, '"')
+	    Xout "Unexpected message:" v:errmsg
+	endif
+    endif
+    return match
+endfunction
+
+let messages = ""
+
+" While loops inside a function are continued on error.
+function! F()
+    let v:errmsg = ""
+    XloopINIT 1 16
+    let loops = 3
+    while loops > 0
+	let loops = loops - 1			"    2:  1:     0:
+	Xloop 1					" X: 1 + 1*16 + 1*16*16
+	if (loops == 1)
+	    Xloop 2				" X:     2*16
+	    XloopNEXT
+	    continue
+	elseif (loops == 0)
+	    Xloop 4				" X:		4*16*16
+	    break
+	elseif 1
+	    Xloop 8				" X: 8
+	    XloopNEXT
+	" endif missing!
+    endwhile	" :endwhile after :if 1
+    Xpath 4096					" X: 16*16*16
+    if MSG('E171', "Missing :endif")
+	let g:messages = g:messages . "A"
+    endif
+
+    let v:errmsg = ""
+    XloopINIT! 8192 4
+    let loops = 2
+    while loops > 0				"    2:     1:
+	XloopNEXT
+	let loops = loops - 1
+	Xloop 1					" X: 8192 + 8192*4
+	if 0
+	    Xloop 2				" X: 0
+	" endif missing
+    endwhile	" :endwhile after :if 0
+    Xpath 131072				" X: 8192*4*4
+    if MSG('E171', "Missing :endif")
+	let g:messages = g:messages . "B"
+    endif
+
+    let v:errmsg = ""
+    XloopINIT 262144 4
+    let loops = 2
+    while loops > 0				"    2:     1:
+	let loops = loops - 1
+	Xloop 1					" X: 262144 + 262144 * 4
+	" if missing!
+	endif	" :endif without :if in while
+	Xloop 2					" X: 524288 + 524288 * 4
+	XloopNEXT
+    endwhile
+    Xpath 4194304				" X: 262144*4*4
+    if MSG('E580', ":endif without :if")
+	let g:messages = g:messages . "C"
+    endif
+endfunction
+
+call F()
+
+" Error continuation outside a function is at the outermost :endwhile or :endif.
+let v:errmsg = ""
+XloopINIT! 8388608 4
+let loops = 2
+while loops > 0					"    2:		1:
+    XloopNEXT
+    let loops = loops - 1
+    Xloop 1					" X: 8388608 + 0 * 4
+    if 0
+	Xloop 2					" X: 0
+    " endif missing! Following :endwhile fails.
+endwhile | Xpath 134217728			" X: 0
+Xpath 268435456					" X: 2*8388608*4*4
+if MSG('E171', "Missing :endif")
+    let messages = g:messages . "D"
+endif
+
+if messages != "ABCD"
+    Xpath 536870912				" X: 0
+    Xout "messages is" messages "instead of ABCD"
+endif
+
+unlet loops messages
+delfunction F
+delfunction MSG
+
+Xcheck 285127993
+
+
+"-------------------------------------------------------------------------------
+" Test 18:  Interrupt (Ctrl-C pressed)					    {{{1
+"
+"	    On an interrupt, the script processing is terminated immediately.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+    if 1
+	Xpath 1					" X: 1
+	while 1
+	    Xpath 2				" X: 2
+	    if 1
+		Xpath 4				" X: 4
+		"INTERRUPT
+		Xpath 8				" X: 0
+		break
+		finish
+	    endif | Xpath 16			" X: 0
+	    Xpath 32				" X: 0
+	endwhile | Xpath 64			" X: 0
+	Xpath 128				" X: 0
+    endif | Xpath 256				" X: 0
+    Xpath 512					" X: 0
+endif
+
+if ExtraVim()
+    try
+	Xpath 1024				" X: 1024
+	"INTERRUPT
+	Xpath 2048				" X: 0
+    endtry | Xpath 4096				" X: 0
+    Xpath 8192					" X: 0
+endif
+
+if ExtraVim()
+    function! F()
+	if 1
+	    Xpath 16384				" X: 16384
+	    while 1
+		Xpath 32768			" X: 32768
+		if 1
+		    Xpath 65536			" X: 65536
+		    "INTERRUPT
+		    Xpath 131072		" X: 0
+		    break
+		    return
+		endif | Xpath 262144		" X: 0
+		Xpath Xpath 524288		" X: 0
+	    endwhile | Xpath 1048576		" X: 0
+	    Xpath Xpath 2097152			" X: 0
+	endif | Xpath Xpath 4194304		" X: 0
+	Xpath Xpath 8388608			" X: 0
+    endfunction
+
+    call F() | Xpath 16777216			" X: 0
+    Xpath 33554432				" X: 0
+endif
+
+if ExtraVim()
+    function! G()
+	try
+	    Xpath 67108864			" X: 67108864
+	    "INTERRUPT
+	    Xpath 134217728			" X: 0
+	endtry | Xpath 268435456		" X: 0
+	Xpath 536870912				" X: 0
+    endfunction
+
+    call G() | Xpath 1073741824			" X: 0
+    " The Xpath command does not accept 2^31 (negative); display explicitly:
+    exec "!echo 2147483648 >>" . g:ExtraVimResult
+						" X: 0
+endif
+
+Xcheck 67224583
+
+
+"-------------------------------------------------------------------------------
+" Test 19:  Aborting on errors inside :try/:endtry			    {{{1
+"
+"	    An error in a command dynamically enclosed in a :try/:endtry region
+"	    aborts script processing immediately.  It does not matter whether
+"	    the failing command is outside or inside a function and whether a
+"	    function has an "abort" attribute.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+    function! F() abort
+	Xpath 1					" X: 1
+	asdf
+	Xpath 2					" X: 0
+    endfunction
+
+    try
+	Xpath 4					" X: 4
+	call F()
+	Xpath 8					" X: 0
+    endtry | Xpath 16				" X: 0
+    Xpath 32					" X: 0
+endif
+
+if ExtraVim()
+    function! G()
+	Xpath 64				" X: 64
+	asdf
+	Xpath 128				" X: 0
+    endfunction
+
+    try
+	Xpath 256				" X: 256
+	call G()
+	Xpath 512				" X: 0
+    endtry | Xpath 1024				" X: 0
+    Xpath 2048					" X: 0
+endif
+
+if ExtraVim()
+    try
+	Xpath 4096				" X: 4096
+	asdf
+	Xpath 8192				" X: 0
+    endtry | Xpath 16384			" X: 0
+    Xpath 32768					" X: 0
+endif
+
+if ExtraVim()
+    if 1
+	try
+	    Xpath 65536				" X: 65536
+	    asdf
+	    Xpath 131072			" X: 0
+	endtry | Xpath 262144			" X: 0
+    endif | Xpath 524288			" X: 0
+    Xpath 1048576				" X: 0
+endif
+
+if ExtraVim()
+    let p = 1
+    while p
+	let p = 0
+	try
+	    Xpath 2097152			" X: 2097152
+	    asdf
+	    Xpath 4194304			" X: 0
+	endtry | Xpath 8388608			" X: 0
+    endwhile | Xpath 16777216			" X: 0
+    Xpath 33554432				" X: 0
+endif
+
+if ExtraVim()
+    let p = 1
+    while p
+	let p = 0
+"	try
+	    Xpath 67108864			" X: 67108864
+    endwhile | Xpath 134217728			" X: 0
+    Xpath 268435456				" X: 0
+endif
+
+Xcheck 69275973
+"-------------------------------------------------------------------------------
+" Test 20:  Aborting on errors after :try/:endtry			    {{{1
+"
+"	    When an error occurs after the last active :try/:endtry region has
+"	    been left, termination behavior is as if no :try/:endtry has been
+"	    seen.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+    let p = 1
+    while p
+	let p = 0
+	try
+	    Xpath 1				" X: 1
+	endtry
+	asdf
+    endwhile | Xpath 2				" X: 0
+    Xpath 4					" X: 4
+endif
+
+if ExtraVim()
+    while 1
+	try
+	    Xpath 8				" X: 8
+	    break
+	    Xpath 16				" X: 0
+	endtry
+    endwhile
+    Xpath 32					" X: 32
+    asdf
+    Xpath 64					" X: 64
+endif
+
+if ExtraVim()
+    while 1
+	try
+	    Xpath 128				" X: 128
+	    break
+	    Xpath 256				" X: 0
+	finally
+	    Xpath 512				" X: 512
+	endtry
+    endwhile
+    Xpath 1024					" X: 1024
+    asdf
+    Xpath 2048					" X: 2048
+endif
+
+if ExtraVim()
+    while 1
+	try
+	    Xpath 4096				" X: 4096
+	finally
+	    Xpath 8192				" X: 8192
+	    break
+	    Xpath 16384				" X: 0
+	endtry
+    endwhile
+    Xpath 32768					" X: 32768
+    asdf
+    Xpath 65536					" X: 65536
+endif
+
+if ExtraVim()
+    let p = 1
+    while p
+	let p = 0
+	try
+	    Xpath 131072			" X: 131072
+	    continue
+	    Xpath 262144			" X: 0
+	endtry
+    endwhile
+    Xpath 524288				" X: 524288
+    asdf
+    Xpath 1048576				" X: 1048576
+endif
+
+if ExtraVim()
+    let p = 1
+    while p
+	let p = 0
+	try
+	    Xpath 2097152			" X: 2097152
+	    continue
+	    Xpath 4194304			" X: 0
+	finally
+	    Xpath 8388608			" X: 8388608
+	endtry
+    endwhile
+    Xpath 16777216				" X: 16777216
+    asdf
+    Xpath 33554432				" X: 33554432
+endif
+
+if ExtraVim()
+    let p = 1
+    while p
+	let p = 0
+	try
+	    Xpath 67108864			" X: 67108864
+	finally
+	    Xpath 134217728			" X: 134217728
+	    continue
+	    Xpath 268435456			" X: 0
+	endtry
+    endwhile
+    Xpath 536870912				" X: 536870912
+    asdf
+    Xpath 1073741824				" X: 1073741824
+endif
+
+Xcheck 1874575085
+
+
+"-------------------------------------------------------------------------------
+" Test 21:  :finally for :try after :continue/:break/:return/:finish	    {{{1
+"
+"	    If a :try conditional stays inactive due to a preceding :continue,
+"	    :break, :return, or :finish, its :finally clause should not be
+"	    executed.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+    function F()
+	let loops = 2
+	XloopINIT! 1 256
+	while loops > 0
+	    XloopNEXT
+	    let loops = loops - 1
+	    try
+		if loops == 1
+		    Xloop 1			" X: 1
+		    continue
+		    Xloop 2			" X: 0
+		elseif loops == 0
+		    Xloop 4			" X: 4*256
+		    break
+		    Xloop 8			" X: 0
+		endif
+
+		try		" inactive
+		    Xloop 16			" X: 0
+		finally
+		    Xloop 32			" X: 0
+		endtry
+	    finally
+		Xloop 64			" X: 64 + 64*256
+	    endtry
+	    Xloop 128				" X: 0
+	endwhile
+
+	try
+	    Xpath 65536				" X: 65536
+	    return
+	    Xpath 131072			" X: 0
+	    try		    " inactive
+		Xpath 262144			" X: 0
+	    finally
+		Xpath 524288			" X: 0
+	    endtry
+	finally
+	    Xpath 1048576			" X: 1048576
+	endtry
+	Xpath 2097152				" X: 0
+    endfunction
+
+    try
+	Xpath 4194304				" X: 4194304
+	call F()
+	Xpath 8388608				" X: 8388608
+	finish
+	Xpath 16777216				" X: 0
+	try		" inactive
+	    Xpath 33554432			" X: 0
+	finally
+	    Xpath 67108864			" X: 0
+	endtry
+    finally
+	Xpath 134217728				" X: 134217728
+    endtry
+    Xpath 268435456				" X: 0
+endif
+
+Xcheck 147932225
+
+
+"-------------------------------------------------------------------------------
+" Test 22:  :finally for a :try after an error/interrupt/:throw		    {{{1
+"
+"	    If a :try conditional stays inactive due to a preceding error or
+"	    interrupt or :throw, its :finally clause should not be executed.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+    function! Error()
+	try
+	    asdf    " aborting error, triggering error exception
+	endtry
+    endfunction
+
+    Xpath 1					" X: 1
+    call Error()
+    Xpath 2					" X: 0
+
+    if 1	" not active due to error
+	try	" not active since :if inactive
+	    Xpath 4				" X: 0
+	finally
+	    Xpath 8				" X: 0
+	endtry
+    endif
+
+    try		" not active due to error
+	Xpath 16				" X: 0
+    finally
+	Xpath 32				" X: 0
+    endtry
+endif
+
+if ExtraVim()
+    function! Interrupt()
+	try
+	    "INTERRUPT	" triggering interrupt exception
+	endtry
+    endfunction
+
+    Xpath 64					" X: 64
+    call Interrupt()
+    Xpath 128					" X: 0
+
+    if 1	" not active due to interrupt
+	try	" not active since :if inactive
+	    Xpath 256				" X: 0
+	finally
+	    Xpath 512				" X: 0
+	endtry
+    endif
+
+    try		" not active due to interrupt
+	Xpath 1024				" X: 0
+    finally
+	Xpath 2048				" X: 0
+    endtry
+endif
+
+if ExtraVim()
+    function! Throw()
+	throw "xyz"
+    endfunction
+
+    Xpath 4096					" X: 4096
+    call Throw()
+    Xpath 8192					" X: 0
+
+    if 1	" not active due to :throw
+	try	" not active since :if inactive
+	    Xpath 16384				" X: 0
+	finally
+	    Xpath 32768				" X: 0
+	endtry
+    endif
+
+    try		" not active due to :throw
+	Xpath 65536				" X: 0
+    finally
+	Xpath 131072				" X: 0
+    endtry
+endif
+
+Xcheck 4161
+
+
+"-------------------------------------------------------------------------------
+" Test 23:  :catch clauses for a :try after a :throw			    {{{1
+"
+"	    If a :try conditional stays inactive due to a preceding :throw,
+"	    none of its :catch clauses should be executed.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+    try
+	Xpath 1					" X: 1
+	throw "xyz"
+	Xpath 2					" X: 0
+
+	if 1	" not active due to :throw
+	    try	" not active since :if inactive
+		Xpath 4				" X: 0
+	    catch /xyz/
+		Xpath 8				" X: 0
+	    endtry
+	endif
+    catch /xyz/
+	Xpath 16				" X: 16
+    endtry
+
+    Xpath 32					" X: 32
+    throw "abc"
+    Xpath 64					" X: 0
+
+    try		" not active due to :throw
+	Xpath 128				" X: 0
+    catch /abc/
+	Xpath 256				" X: 0
+    endtry
+endif
+
+Xcheck 49
+
+
+"-------------------------------------------------------------------------------
+" Test 24:  :endtry for a :try after a :throw				    {{{1
+"
+"	    If a :try conditional stays inactive due to a preceding :throw,
+"	    its :endtry should not rethrow the exception to the next surrounding
+"	    active :try conditional.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+    try			" try 1
+	try		" try 2
+	    Xpath 1				" X: 1
+	    throw "xyz"	" makes try 2 inactive
+	    Xpath 2				" X: 0
+
+	    try		" try 3
+		Xpath 4				" X: 0
+	    endtry	" no rethrow to try 1
+	catch /xyz/	" should catch although try 2 inactive
+	    Xpath 8				" X: 8
+	endtry
+    catch /xyz/		" try 1 active, but exception already caught
+	Xpath 16				" X: 0
+    endtry
+    Xpath 32					" X: 32
+endif
+
+Xcheck 41
+
+
+"-------------------------------------------------------------------------------
+" Test 25:  Executing :finally clauses on normal control flow		    {{{1
+"
+"	    Control flow in a :try conditional should always fall through to its
+"	    :finally clause.  A :finally clause of a :try conditional inside an
+"	    inactive conditional should never be executed.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! F()
+    let loops = 3
+    XloopINIT 1 256
+    while loops > 0				"     3:   2:       1:
+	Xloop 1					" X:  1 +  1*256 + 1*256*256
+	if loops >= 2
+	    try
+		Xloop 2				" X:  2 +  2*256
+		if loops == 2
+		    try
+			Xloop 4			" X:       4*256
+		    finally
+			Xloop 8			" X:       8*256
+		    endtry
+		endif
+	    finally
+		Xloop 16			" X: 16 + 16*256
+		if loops == 2
+		    try
+			Xloop 32		" X:      32*256
+		    finally
+			Xloop 64		" X:      64*256
+		    endtry
+		endif
+	    endtry
+	endif
+	Xloop 128				" X: 128 + 128*256 + 128*256*256
+	let loops = loops - 1
+	XloopNEXT
+    endwhile
+    Xpath 16777216				" X: 16777216
+endfunction
+
+if 1
+    try
+	Xpath 33554432				" X: 33554432
+	call F()
+	Xpath 67108864				" X: 67108864
+    finally
+	Xpath 134217728				" X: 134217728
+    endtry
+else
+    try
+	Xpath 268435456				" X: 0
+    finally
+	Xpath 536870912				" X: 0
+    endtry
+endif
+
+delfunction F
+
+Xcheck 260177811
+
+
+"-------------------------------------------------------------------------------
+" Test 26:  Executing :finally clauses after :continue or :break	    {{{1
+"
+"	    For a :continue or :break dynamically enclosed in a :try/:endtry
+"	    region inside the next surrounding :while/:endwhile, if the
+"	    :continue/:break is before the :finally, the :finally clause is
+"	    executed first.  If the :continue/:break is after the :finally, the
+"	    :finally clause is broken (like an :if/:endif region).
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+try
+    let loops = 3
+    XloopINIT! 1 32
+    while loops > 0
+	XloopNEXT
+	try
+	    try
+		if loops == 2			"    3:   2:     1:
+		    Xloop 1			" X:      1*32
+		    let loops = loops - 1
+		    continue
+		elseif loops == 1
+		    Xloop 2			" X:		 2*32*32
+		    break
+		    finish
+		endif
+		Xloop 4				" X: 4
+	    endtry
+	finally
+	    Xloop 8				" X: 8  + 8*32 + 8*32*32
+	endtry
+	Xloop 16				" X: 16
+	let loops = loops - 1
+    endwhile
+    Xpath 32768					" X: 32768
+finally
+    Xpath 65536					" X: 65536
+    let loops = 3
+    XloopINIT 131072 16
+    while loops > 0
+	try
+	finally
+	    try
+		if loops == 2
+		    Xloop 1			" X: 131072*16
+		    let loops = loops - 1
+		    XloopNEXT
+		    continue
+		elseif loops == 1
+		    Xloop 2			" X: 131072*2*16*16
+		    break
+		    finish
+		endif
+	    endtry
+	    Xloop 4				" X: 131072*4
+	endtry
+	Xloop 8					" X: 131072*8
+	let loops = loops - 1
+	XloopNEXT
+    endwhile
+    Xpath 536870912				" X: 536870912
+endtry
+Xpath 1073741824				" X: 1073741824
+
+unlet loops
+
+Xcheck 1681500476
+
+
+"-------------------------------------------------------------------------------
+" Test 27:  Executing :finally clauses after :return			    {{{1
+"
+"	    For a :return command dynamically enclosed in a :try/:endtry region,
+"	    :finally clauses are executed and the called function is ended.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! F()
+    try
+	Xpath 1					" X: 1
+	try
+	    Xpath 2				" X: 2
+	    return
+	    Xpath 4				" X: 0
+	finally
+	    Xpath 8				" X: 8
+	endtry
+	Xpath 16				" X: 0
+    finally
+	Xpath 32				" X: 32
+    endtry
+    Xpath 64					" X: 0
+endfunction
+
+function! G()
+    try
+	Xpath 128				" X: 128
+	return
+	Xpath 256				" X: 0
+    finally
+	Xpath 512				" X: 512
+	call F()
+	Xpath 1024				" X: 1024
+    endtry
+    Xpath 2048					" X: 0
+endfunction
+
+function! H()
+    try
+	Xpath 4096				" X: 4096
+	call G()
+	Xpath 8192				" X: 8192
+    finally
+	Xpath 16384				" X: 16384
+	return
+	Xpath 32768				" X: 0
+    endtry
+    Xpath 65536					" X: 0
+endfunction
+
+try
+    Xpath 131072				" X: 131072
+    call H()
+    Xpath 262144				" X: 262144
+finally
+    Xpath 524288				" X: 524288
+endtry
+Xpath 1048576					" X: 1048576
+
+Xcheck 1996459
+
+" Leave F, G, and H for execution as scripts in the next test.
+
+
+"-------------------------------------------------------------------------------
+" Test 28:  Executing :finally clauses after :finish			    {{{1
+"
+"	    For a :finish command dynamically enclosed in a :try/:endtry region,
+"	    :finally clauses are executed and the sourced file is finished.
+"
+"	    This test executes the bodies of the functions F, G, and H from the
+"	    previous test as script files (:return replaced by :finish).
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let scriptF = MakeScript("F")			" X: 1 + 2 + 8 + 32
+let scriptG = MakeScript("G", scriptF)		" X: 128 + 512 + 1024
+let scriptH = MakeScript("H", scriptG)		" X: 4096 + 8192 + 16384
+
+try
+    Xpath 131072				" X: 131072
+    exec "source" scriptH
+    Xpath 262144				" X: 262144
+finally
+    Xpath 524288				" X: 524288
+endtry
+Xpath 1048576					" X: 1048576
+
+call delete(scriptF)
+call delete(scriptG)
+call delete(scriptH)
+unlet scriptF scriptG scriptH
+delfunction F
+delfunction G
+delfunction H
+
+Xcheck 1996459
+
+
+"-------------------------------------------------------------------------------
+" Test 29:  Executing :finally clauses on errors			    {{{1
+"
+"	    After an error in a command dynamically enclosed in a :try/:endtry
+"	    region, :finally clauses are executed and the script processing is
+"	    terminated.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+    function! F()
+	while 1
+	    try
+		Xpath 1				" X: 1
+		while 1
+		    try
+			Xpath 2			" X: 2
+			asdf	    " error
+			Xpath 4			" X: 0
+		    finally
+			Xpath 8			" X: 8
+		    endtry | Xpath 16		" X: 0
+		    Xpath 32			" X: 0
+		    break
+		endwhile
+		Xpath 64			" X: 0
+	    finally
+		Xpath 128			" X: 128
+	    endtry | Xpath 256			" X: 0
+	    Xpath 512				" X: 0
+	    break
+	endwhile
+	Xpath 1024				" X: 0
+    endfunction
+
+    while 1
+	try
+	    Xpath 2048				" X: 2048
+	    while 1
+		call F()
+		Xpath 4096			" X: 0
+		break
+	    endwhile  | Xpath 8192		" X: 0
+	    Xpath 16384				" X: 0
+	finally
+	    Xpath 32768				" X: 32768
+	endtry | Xpath 65536			" X: 0
+    endwhile | Xpath 131072			" X: 0
+    Xpath 262144				" X: 0
+endif
+
+if ExtraVim()
+    function! G() abort
+	if 1
+	    try
+		Xpath 524288			" X: 524288
+		asdf	    " error
+		Xpath 1048576			" X: 0
+	    finally
+		Xpath 2097152			" X: 2097152
+	    endtry | Xpath 4194304		" X: 0
+	endif | Xpath 8388608			" X: 0
+	Xpath 16777216				" X: 0
+    endfunction
+
+    if 1
+	try
+	    Xpath 33554432			" X: 33554432
+	    call G()
+	    Xpath 67108864			" X: 0
+	finally
+	    Xpath 134217728			" X: 134217728
+	endtry | Xpath 268435456		" X: 0
+    endif | Xpath 536870912			" X: 0
+    Xpath 1073741824				" X: 0
+endif
+
+Xcheck 170428555
+
+
+"-------------------------------------------------------------------------------
+" Test 30:  Executing :finally clauses on interrupt			    {{{1
+"
+"	    After an interrupt in a command dynamically enclosed in
+"	    a :try/:endtry region, :finally clauses are executed and the
+"	    script processing is terminated.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+    XloopINIT 1 16
+
+    function! F()
+	try
+	    Xloop 1				" X: 1 + 1*16
+	    "INTERRUPT
+	    Xloop 2				" X: 0
+	finally
+	    Xloop 4				" X: 4 + 4*16
+	endtry
+	Xloop 8					" X: 0
+    endfunction
+
+    try
+	Xpath 256				" X: 256
+	try
+	    Xpath 512				" X: 512
+	    "INTERRUPT
+	    Xpath 1024				" X: 0
+	finally
+	    Xpath 2048				" X: 2048
+	    try
+		Xpath 4096			" X: 4096
+		try
+		    Xpath 8192			" X: 8192
+		finally
+		    Xpath 16384			" X: 16384
+		    try
+			Xpath 32768		" X: 32768
+			"INTERRUPT
+			Xpath 65536		" X: 0
+		    endtry
+		    Xpath 131072		" X: 0
+		endtry
+		Xpath 262144			" X: 0
+	    endtry
+	    Xpath 524288			" X: 0
+	endtry
+	Xpath 1048576				" X: 0
+    finally
+	Xpath 2097152				" X: 2097152
+	try
+	    Xpath 4194304			" X: 4194304
+	    call F()
+	    Xpath 8388608			" X: 0
+	finally
+	    Xpath 16777216			" X: 16777216
+	    try
+		Xpath 33554432			" X: 33554432
+		XloopNEXT
+		ExecAsScript F
+		Xpath 67108864			" X: 0
+	    finally
+		Xpath 134217728			" X: 134217728
+	    endtry
+	    Xpath 268435456			" X: 0
+	endtry
+	Xpath 536870912				" X: 0
+    endtry
+    Xpath 1073741824				" X: 0
+endif
+
+Xcheck 190905173
+
+
+"-------------------------------------------------------------------------------
+" Test 31:  Executing :finally clauses after :throw			    {{{1
+"
+"	    After a :throw dynamically enclosed in a :try/:endtry region,
+"	    :finally clauses are executed and the script processing is
+"	    terminated.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+    XloopINIT 1 16
+
+    function! F()
+	try
+	    Xloop 1				" X: 1 + 1*16
+	    throw "exception"
+	    Xloop 2				" X: 0
+	finally
+	    Xloop 4				" X: 4 + 4*16
+	endtry
+	Xloop 8					" X: 0
+    endfunction
+
+    try
+	Xpath 256				" X: 256
+	try
+	    Xpath 512				" X: 512
+	    throw "exception"
+	    Xpath 1024				" X: 0
+	finally
+	    Xpath 2048				" X: 2048
+	    try
+		Xpath 4096			" X: 4096
+		try
+		    Xpath 8192			" X: 8192
+		finally
+		    Xpath 16384			" X: 16384
+		    try
+			Xpath 32768		" X: 32768
+			throw "exception"
+			Xpath 65536		" X: 0
+		    endtry
+		    Xpath 131072		" X: 0
+		endtry
+		Xpath 262144			" X: 0
+	    endtry
+	    Xpath 524288			" X: 0
+	endtry
+	Xpath 1048576				" X: 0
+    finally
+	Xpath 2097152				" X: 2097152
+	try
+	    Xpath 4194304			" X: 4194304
+	    call F()
+	    Xpath 8388608			" X: 0
+	finally
+	    Xpath 16777216			" X: 16777216
+	    try
+		Xpath 33554432			" X: 33554432
+		XloopNEXT
+		ExecAsScript F
+		Xpath 67108864			" X: 0
+	    finally
+		Xpath 134217728			" X: 134217728
+	    endtry
+	    Xpath 268435456			" X: 0
+	endtry
+	Xpath 536870912				" X: 0
+    endtry
+    Xpath 1073741824				" X: 0
+endif
+
+Xcheck 190905173
+
+
+"-------------------------------------------------------------------------------
+" Test 32:  Remembering the :return value on :finally			    {{{1
+"
+"	    If a :finally clause is executed due to a :return specifying
+"	    a value, this is the value visible to the caller if not overwritten
+"	    by a new :return in the :finally clause.  A :return without a value
+"	    in the :finally clause overwrites with value 0.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! F()
+    try
+	Xpath 1					" X: 1
+	try
+	    Xpath 2				" X: 2
+	    return "ABCD"
+	    Xpath 4				" X: 0
+	finally
+	    Xpath 8				" X: 8
+	endtry
+	Xpath 16				" X: 0
+    finally
+	Xpath 32				" X: 32
+    endtry
+    Xpath 64					" X: 0
+endfunction
+
+function! G()
+    try
+	Xpath 128				" X: 128
+	return 8
+	Xpath 256				" X: 0
+    finally
+	Xpath 512				" X: 512
+	return 16 + strlen(F())
+	Xpath 1024				" X: 0
+    endtry
+    Xpath 2048					" X: 0
+endfunction
+
+function! H()
+    try
+	Xpath 4096				" X: 4096
+	return 32
+	Xpath 8192				" X: 0
+    finally
+	Xpath 16384				" X: 16384
+	return
+	Xpath 32768				" X: 0
+    endtry
+    Xpath 65536					" X: 0
+endfunction
+
+function! I()
+    try
+	Xpath 131072				" X: 131072
+    finally
+	Xpath 262144				" X: 262144
+	return G() + H() + 64
+	Xpath 524288				" X: 0
+    endtry
+    Xpath 1048576				" X: 0
+endfunction
+
+let retcode = I()
+Xpath 2097152					" X: 2097152
+
+if retcode < 0
+    Xpath 4194304				" X: 0
+endif
+if retcode % 4
+    Xpath 8388608				" X: 0
+endif
+if (retcode/4) % 2
+    Xpath 16777216				" X: 16777216
+endif
+if (retcode/8) % 2
+    Xpath 33554432				" X: 0
+endif
+if (retcode/16) % 2
+    Xpath 67108864				" X: 67108864
+endif
+if (retcode/32) % 2
+    Xpath 134217728				" X: 0
+endif
+if (retcode/64) % 2
+    Xpath 268435456				" X: 268435456
+endif
+if retcode/128
+    Xpath 536870912				" X: 0
+endif
+
+unlet retcode
+delfunction F
+delfunction G
+delfunction H
+delfunction I
+
+Xcheck 354833067
+
+
+"-------------------------------------------------------------------------------
+" Test 33:  :return under :execute or user command and :finally		    {{{1
+"
+"	    A :return command may be executed under an ":execute" or from
+"	    a user command.  Executing of :finally clauses and passing through
+"	    the return code works also then.
+"-------------------------------------------------------------------------------
+XpathINIT
+
+command! -nargs=? RETURN
+    \ try | return <args> | finally | return <args> * 2 | endtry
+
+function! F()
+    try
+	RETURN 8
+	Xpath 1					" X: 0
+    finally
+	Xpath 2					" X: 2
+    endtry
+    Xpath 4					" X: 0
+endfunction
+
+function! G()
+    try
+	RETURN 32
+	Xpath 8					" X: 0
+    finally
+	Xpath 16				" X: 16
+	RETURN 128
+	Xpath 32				" X: 0
+    endtry
+    Xpath 64					" X: 0
+endfunction
+
+function! H()
+    try
+	execute "try | return 512 | finally | return 1024 | endtry"
+	Xpath 128				" X: 0
+    finally
+	Xpath 256				" X: 256
+    endtry
+    Xpath 512					" X: 0
+endfunction
+
+function! I()
+    try
+	execute "try | return 2048 | finally | return 4096 | endtry"
+	Xpath 1024				" X: 0
+    finally
+	Xpath 2048				" X: 2048
+	execute "try | return 8192 | finally | return 16384 | endtry"
+	Xpath 4096				" X: 0
+    endtry
+    Xpath 8192					" X: 0
+endfunction
+
+function! J()
+    try
+	RETURN 32768
+	Xpath 16384				" X: 0
+    finally
+	Xpath 32768				" X: 32768
+	return
+	Xpath 65536				" X: 0
+    endtry
+    Xpath 131072				" X: 0
+endfunction
+
+function! K()
+    try
+	execute "try | return 131072 | finally | return 262144 | endtry"
+	Xpath 262144				" X: 0
+    finally
+	Xpath 524288				" X: 524288
+	execute "try | return 524288 | finally | return | endtry"
+	Xpath 1048576				" X: 0
+    endtry
+    Xpath 2097152				" X: 0
+endfunction
+
+function! L()
+    try
+	return
+	Xpath 4194304				" X: 0
+    finally
+	Xpath 8388608				" X: 8388608
+	RETURN 1048576
+	Xpath 16777216				" X: 0
+    endtry
+    Xpath 33554432				" X: 0
+endfunction
+
+function! M()
+    try
+	return
+	Xpath 67108864				" X: 0
+    finally
+	Xpath 134217728				" X: 134217728
+	execute "try | return 4194304 | finally | return 8388608 | endtry"
+	Xpath 268435456				" X: 0
+    endtry
+    Xpath 536870912				" X: 0
+endfunction
+
+function! N()
+    RETURN 16777216
+endfunction
+
+function! O()
+    execute "try | return 67108864 | finally | return 134217728 | endtry"
+endfunction
+
+let sum	     = F() + G() + H()  + I()   + J() + K() + L()     + M()
+let expected = 16  + 256 + 1024 + 16384 + 0   + 0   + 2097152 + 8388608
+let sum	     = sum      + N()      + O()
+let expected = expected + 33554432 + 134217728
+
+if sum == expected
+    Xout "sum = " . sum . " (ok)"
+else
+    Xout "sum = " . sum . ", expected: " . expected
+endif
+
+Xpath 1073741824				" X: 1073741824
+
+if sum != expected
+    " The Xpath command does not accept 2^31 (negative); add explicitly:
+    let Xpath = Xpath + 2147483648		" X: 0
+endif
+
+unlet sum expected
+delfunction F
+delfunction G
+delfunction H
+delfunction I
+delfunction J
+delfunction K
+delfunction L
+delfunction M
+delfunction N
+delfunction O
+
+Xcheck 1216907538
+
+
+"-------------------------------------------------------------------------------
+" Test 34:  :finally reason discarded by :continue			    {{{1
+"
+"	    When a :finally clause is executed due to a :continue, :break,
+"	    :return, :finish, error, interrupt or :throw, the jump reason is
+"	    discarded by a :continue in the finally clause.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    XloopINIT! 1 8
+
+    function! C(jump)
+	XloopNEXT
+	let loop = 0
+	while loop < 2
+	    let loop = loop + 1
+	    if loop == 1
+		try
+		    if a:jump == "continue"
+			continue
+		    elseif a:jump == "break"
+			break
+		    elseif a:jump == "return" || a:jump == "finish"
+			return
+		    elseif a:jump == "error"
+			asdf
+		    elseif a:jump == "interrupt"
+			"INTERRUPT
+			let dummy = 0
+		    elseif a:jump == "throw"
+			throw "abc"
+		    endif
+		finally
+		    continue	" discards jump that caused the :finally
+		    Xloop 1		" X: 0
+		endtry
+		Xloop 2			" X: 0
+	    elseif loop == 2
+		Xloop 4			" X: 4*(1+8+64+512+4096+32768+262144)
+	    endif
+	endwhile
+    endfunction
+
+    call C("continue")
+    Xpath 2097152				" X: 2097152
+    call C("break")
+    Xpath 4194304				" X: 4194304
+    call C("return")
+    Xpath 8388608				" X: 8388608
+    let g:jump = "finish"
+    ExecAsScript C
+    unlet g:jump
+    Xpath 16777216				" X: 16777216
+    try
+	call C("error")
+	Xpath 33554432				" X: 33554432
+    finally
+	Xpath 67108864				" X: 67108864
+	try
+	    call C("interrupt")
+	    Xpath 134217728			" X: 134217728
+	finally
+	    Xpath 268435456			" X: 268435456
+	    call C("throw")
+	    Xpath 536870912			" X: 536870912
+	endtry
+    endtry
+    Xpath 1073741824				" X: 1073741824
+
+    delfunction C
+
+endif
+
+Xcheck 2146584868
+
+
+"-------------------------------------------------------------------------------
+" Test 35:  :finally reason discarded by :break				    {{{1
+"
+"	    When a :finally clause is executed due to a :continue, :break,
+"	    :return, :finish, error, interrupt or :throw, the jump reason is
+"	    discarded by a :break in the finally clause.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    XloopINIT! 1 8
+
+    function! B(jump)
+	XloopNEXT
+	let loop = 0
+	while loop < 2
+	    let loop = loop + 1
+	    if loop == 1
+		try
+		    if a:jump == "continue"
+			continue
+		    elseif a:jump == "break"
+			break
+		    elseif a:jump == "return" || a:jump == "finish"
+			return
+		    elseif a:jump == "error"
+			asdf
+		    elseif a:jump == "interrupt"
+			"INTERRUPT
+			let dummy = 0
+		    elseif a:jump == "throw"
+			throw "abc"
+		    endif
+		finally
+		    break	" discards jump that caused the :finally
+		    Xloop 1		" X: 0
+		endtry
+	    elseif loop == 2
+		Xloop 2			" X: 0
+	    endif
+	endwhile
+	Xloop 4				" X: 4*(1+8+64+512+4096+32768+262144)
+    endfunction
+
+    call B("continue")
+    Xpath 2097152				" X: 2097152
+    call B("break")
+    Xpath 4194304				" X: 4194304
+    call B("return")
+    Xpath 8388608				" X: 8388608
+    let g:jump = "finish"
+    ExecAsScript B
+    unlet g:jump
+    Xpath 16777216				" X: 16777216
+    try
+	call B("error")
+	Xpath 33554432				" X: 33554432
+    finally
+	Xpath 67108864				" X: 67108864
+	try
+	    call B("interrupt")
+	    Xpath 134217728			" X: 134217728
+	finally
+	    Xpath 268435456			" X: 268435456
+	    call B("throw")
+	    Xpath 536870912			" X: 536870912
+	endtry
+    endtry
+    Xpath 1073741824				" X: 1073741824
+
+    delfunction B
+
+endif
+
+Xcheck 2146584868
+
+
+"-------------------------------------------------------------------------------
+" Test 36:  :finally reason discarded by :return			    {{{1
+"
+"	    When a :finally clause is executed due to a :continue, :break,
+"	    :return, :finish, error, interrupt or :throw, the jump reason is
+"	    discarded by a :return in the finally clause.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    XloopINIT! 1 8
+
+    function! R(jump, retval) abort
+	XloopNEXT
+	let loop = 0
+	while loop < 2
+	    let loop = loop + 1
+	    if loop == 1
+		try
+		    if a:jump == "continue"
+			continue
+		    elseif a:jump == "break"
+			break
+		    elseif a:jump == "return"
+			return
+		    elseif a:jump == "error"
+			asdf
+		    elseif a:jump == "interrupt"
+			"INTERRUPT
+			let dummy = 0
+		    elseif a:jump == "throw"
+			throw "abc"
+		    endif
+		finally
+		    return a:retval	" discards jump that caused the :finally
+		    Xloop 1			" X: 0
+		endtry
+	    elseif loop == 2
+		Xloop 2				" X: 0
+	    endif
+	endwhile
+	Xloop 4					" X: 0
+    endfunction
+
+    let sum =  -R("continue", -8)
+    Xpath 2097152				" X: 2097152
+    let sum = sum - R("break", -16)
+    Xpath 4194304				" X: 4194304
+    let sum = sum - R("return", -32)
+    Xpath 8388608				" X: 8388608
+    try
+	let sum = sum - R("error", -64)
+	Xpath 16777216				" X: 16777216
+    finally
+	Xpath 33554432				" X: 33554432
+	try
+	    let sum = sum - R("interrupt", -128)
+	    Xpath 67108864			" X: 67108864
+	finally
+	    Xpath 134217728			" X: 134217728
+	    let sum = sum - R("throw", -256)
+	    Xpath 268435456			" X: 268435456
+	endtry
+    endtry
+    Xpath 536870912				" X: 536870912
+
+    let expected = 8 + 16 + 32 + 64 + 128 + 256
+    if sum != expected
+	Xpath 1073741824			" X: 0
+	Xout "sum =" . sum . ", expected: " . expected
+    endif
+
+    unlet sum expected
+    delfunction R
+
+endif
+
+Xcheck 1071644672
+
+
+"-------------------------------------------------------------------------------
+" Test 37:  :finally reason discarded by :finish			    {{{1
+"
+"	    When a :finally clause is executed due to a :continue, :break,
+"	    :return, :finish, error, interrupt or :throw, the jump reason is
+"	    discarded by a :finish in the finally clause.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    XloopINIT! 1 8
+
+    function! F(jump)	" not executed as function, transformed to a script
+	XloopNEXT
+	let loop = 0
+	while loop < 2
+	    let loop = loop + 1
+	    if loop == 1
+		try
+		    if a:jump == "continue"
+			continue
+		    elseif a:jump == "break"
+			break
+		    elseif a:jump == "finish"
+			finish
+		    elseif a:jump == "error"
+			asdf
+		    elseif a:jump == "interrupt"
+			"INTERRUPT
+			let dummy = 0
+		    elseif a:jump == "throw"
+			throw "abc"
+		    endif
+		finally
+		    finish	" discards jump that caused the :finally
+		    Xloop 1			" X: 0
+		endtry
+	    elseif loop == 2
+		Xloop 2				" X: 0
+	    endif
+	endwhile
+	Xloop 4					" X: 0
+    endfunction
+
+    let scriptF = MakeScript("F")
+    delfunction F
+
+    let g:jump = "continue"
+    exec "source" scriptF
+    Xpath 2097152				" X: 2097152
+    let g:jump = "break"
+    exec "source" scriptF
+    Xpath 4194304				" X: 4194304
+    let g:jump = "finish"
+    exec "source" scriptF
+    Xpath 8388608				" X: 8388608
+    try
+	let g:jump = "error"
+	exec "source" scriptF
+	Xpath 16777216				" X: 16777216
+    finally
+	Xpath 33554432				" X: 33554432
+	try
+	    let g:jump = "interrupt"
+	    exec "source" scriptF
+	    Xpath 67108864			" X: 67108864
+	finally
+	    Xpath 134217728			" X: 134217728
+	    try
+		let g:jump = "throw"
+		exec "source" scriptF
+		Xpath 268435456			" X: 268435456
+	    finally
+		Xpath 536870912			" X: 536870912
+	    endtry
+	endtry
+    endtry
+    unlet g:jump
+
+    call delete(scriptF)
+    unlet scriptF
+
+endif
+
+Xcheck 1071644672
+
+
+"-------------------------------------------------------------------------------
+" Test 38:  :finally reason discarded by an error			    {{{1
+"
+"	    When a :finally clause is executed due to a :continue, :break,
+"	    :return, :finish, error, interrupt or :throw, the jump reason is
+"	    discarded by an error in the finally clause.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    XloopINIT! 1 4
+
+    function! E(jump)
+	XloopNEXT
+	let loop = 0
+	while loop < 2
+	    let loop = loop + 1
+	    if loop == 1
+		try
+		    if a:jump == "continue"
+			continue
+		    elseif a:jump == "break"
+			break
+		    elseif a:jump == "return" || a:jump == "finish"
+			return
+		    elseif a:jump == "error"
+			asdf
+		    elseif a:jump == "interrupt"
+			"INTERRUPT
+			let dummy = 0
+		    elseif a:jump == "throw"
+			throw "abc"
+		    endif
+		finally
+		    asdf	" error; discards jump that caused the :finally
+		endtry
+	    elseif loop == 2
+		Xloop 1				" X: 0
+	    endif
+	endwhile
+	Xloop 2					" X: 0
+    endfunction
+
+    try
+	Xpath 16384				" X: 16384
+	call E("continue")
+	Xpath 32768				" X: 0
+    finally
+	try
+	    Xpath 65536				" X: 65536
+	    call E("break")
+	    Xpath 131072			" X: 0
+	finally
+	    try
+		Xpath 262144			" X: 262144
+		call E("return")
+		Xpath 524288			" X: 0
+	    finally
+		try
+		    Xpath 1048576		" X: 1048576
+		    let g:jump = "finish"
+		    ExecAsScript E
+		    Xpath 2097152		" X: 0
+		finally
+		    unlet g:jump
+		    try
+			Xpath 4194304		" X: 4194304
+			call E("error")
+			Xpath 8388608		" X: 0
+		    finally
+			try
+			    Xpath 16777216	" X: 16777216
+			    call E("interrupt")
+			    Xpath 33554432	" X: 0
+			finally
+			    try
+				Xpath 67108864	" X: 67108864
+				call E("throw")
+				Xpath 134217728	" X: 0
+			    finally
+				Xpath 268435456	" X: 268435456
+				delfunction E
+			    endtry
+			endtry
+		    endtry
+		endtry
+	    endtry
+	endtry
+    endtry
+    Xpath 536870912				" X: 0
+
+endif
+
+Xcheck 357908480
+
+
+"-------------------------------------------------------------------------------
+" Test 39:  :finally reason discarded by an interrupt			    {{{1
+"
+"	    When a :finally clause is executed due to a :continue, :break,
+"	    :return, :finish, error, interrupt or :throw, the jump reason is
+"	    discarded by an interrupt in the finally clause.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    XloopINIT! 1 4
+
+    function! I(jump)
+	XloopNEXT
+	let loop = 0
+	while loop < 2
+	    let loop = loop + 1
+	    if loop == 1
+		try
+		    if a:jump == "continue"
+			continue
+		    elseif a:jump == "break"
+			break
+		    elseif a:jump == "return" || a:jump == "finish"
+			return
+		    elseif a:jump == "error"
+			asdf
+		    elseif a:jump == "interrupt"
+			"INTERRUPT
+			let dummy = 0
+		    elseif a:jump == "throw"
+			throw "abc"
+		    endif
+		finally
+		    "INTERRUPT - discards jump that caused the :finally
+		    let dummy = 0
+		endtry
+	    elseif loop == 2
+		Xloop 1				" X: 0
+	    endif
+	endwhile
+	Xloop 2					" X: 0
+    endfunction
+
+    try
+	Xpath 16384				" X: 16384
+	call I("continue")
+	Xpath 32768				" X: 0
+    finally
+	try
+	    Xpath 65536				" X: 65536
+	    call I("break")
+	    Xpath 131072			" X: 0
+	finally
+	    try
+		Xpath 262144			" X: 262144
+		call I("return")
+		Xpath 524288			" X: 0
+	    finally
+		try
+		    Xpath 1048576		" X: 1048576
+		    let g:jump = "finish"
+		    ExecAsScript I
+		    Xpath 2097152		" X: 0
+		finally
+		    unlet g:jump
+		    try
+			Xpath 4194304		" X: 4194304
+			call I("error")
+			Xpath 8388608		" X: 0
+		    finally
+			try
+			    Xpath 16777216	" X: 16777216
+			    call I("interrupt")
+			    Xpath 33554432	" X: 0
+			finally
+			    try
+				Xpath 67108864	" X: 67108864
+				call I("throw")
+				Xpath 134217728	" X: 0
+			    finally
+				Xpath 268435456	" X: 268435456
+				delfunction I
+			    endtry
+			endtry
+		    endtry
+		endtry
+	    endtry
+	endtry
+    endtry
+    Xpath 536870912				" X: 0
+
+endif
+
+Xcheck 357908480
+
+
+"-------------------------------------------------------------------------------
+" Test 40:  :finally reason discarded by :throw				    {{{1
+"
+"	    When a :finally clause is executed due to a :continue, :break,
+"	    :return, :finish, error, interrupt or :throw, the jump reason is
+"	    discarded by a :throw in the finally clause.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    XloopINIT! 1 4
+
+    function! T(jump)
+	XloopNEXT
+	let loop = 0
+	while loop < 2
+	    let loop = loop + 1
+	    if loop == 1
+		try
+		    if a:jump == "continue"
+			continue
+		    elseif a:jump == "break"
+			break
+		    elseif a:jump == "return" || a:jump == "finish"
+			return
+		    elseif a:jump == "error"
+			asdf
+		    elseif a:jump == "interrupt"
+			"INTERRUPT
+			let dummy = 0
+		    elseif a:jump == "throw"
+			throw "abc"
+		    endif
+		finally
+		    throw "xyz"	" discards jump that caused the :finally
+		endtry
+	    elseif loop == 2
+		Xloop 1				" X: 0
+	    endif
+	endwhile
+	Xloop 2					" X: 0
+    endfunction
+
+    try
+	Xpath 16384				" X: 16384
+	call T("continue")
+	Xpath 32768				" X: 0
+    finally
+	try
+	    Xpath 65536				" X: 65536
+	    call T("break")
+	    Xpath 131072			" X: 0
+	finally
+	    try
+		Xpath 262144			" X: 262144
+		call T("return")
+		Xpath 524288			" X: 0
+	    finally
+		try
+		    Xpath 1048576		" X: 1048576
+		    let g:jump = "finish"
+		    ExecAsScript T
+		    Xpath 2097152		" X: 0
+		finally
+		    unlet g:jump
+		    try
+			Xpath 4194304		" X: 4194304
+			call T("error")
+			Xpath 8388608		" X: 0
+		    finally
+			try
+			    Xpath 16777216	" X: 16777216
+			    call T("interrupt")
+			    Xpath 33554432	" X: 0
+			finally
+			    try
+				Xpath 67108864	" X: 67108864
+				call T("throw")
+				Xpath 134217728	" X: 0
+			    finally
+				Xpath 268435456	" X: 268435456
+				delfunction T
+			    endtry
+			endtry
+		    endtry
+		endtry
+	    endtry
+	endtry
+    endtry
+    Xpath 536870912				" X: 0
+
+endif
+
+Xcheck 357908480
+
+
+"-------------------------------------------------------------------------------
+" Test 41:  Skipped :throw finding next command				    {{{1
+"
+"	    A :throw in an inactive conditional must not hide a following
+"	    command.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! F()
+    Xpath 1					" X: 1
+    if 0 | throw "never" | endif | Xpath 2	" X: 2
+    Xpath 4					" X: 4
+endfunction
+
+function! G()
+    Xpath 8					    " X: 8
+    while 0 | throw "never" | endwhile | Xpath 16   " X: 16
+    Xpath 32					    " X: 32
+endfunction
+
+function H()
+    Xpath 64						    " X: 64
+    if 0 | try | throw "never" | endtry | endif | Xpath 128 " X: 128
+    Xpath 256						    " X: 256
+endfunction
+
+Xpath 512					" X: 512
+
+try
+    Xpath 1024					" X: 1024
+    call F()
+    Xpath 2048					" X: 2048
+catch /.*/
+    Xpath 4096					" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+Xpath 8192					" X: 8192
+
+try
+    Xpath 16384					" X: 16384
+    call G()
+    Xpath 32768					" X: 32768
+catch /.*/
+    Xpath 65536					" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+Xpath 131072					" X: 131072
+
+try
+    Xpath 262144				" X: 262144
+    call H()
+    Xpath 524288				" X: 524288
+catch /.*/
+    Xpath 1048576				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+Xpath 2097152					" X: 2097152
+
+delfunction F
+delfunction G
+delfunction H
+
+Xcheck 3076095
+
+
+"-------------------------------------------------------------------------------
+" Test 42:  Catching number and string exceptions			    {{{1
+"
+"	    When a number is thrown, it is converted to a string exception.
+"	    Numbers and strings may be caught by specifying a regular exception
+"	    as argument to the :catch command.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+try
+
+    try
+	Xpath 1					" X: 1
+	throw 4711
+	Xpath 2					" X: 0
+    catch /4711/
+	Xpath 4					" X: 4
+    endtry
+
+    try
+	Xpath 8					" X: 8
+	throw 4711
+	Xpath 16				" X: 0
+    catch /^4711$/
+	Xpath 32				" X: 32
+    endtry
+
+    try
+	Xpath 64				" X: 64
+	throw 4711
+	Xpath 128				" X: 0
+    catch /\d/
+	Xpath 256				" X: 256
+    endtry
+
+    try
+	Xpath 512				" X: 512
+	throw 4711
+	Xpath 1024				" X: 0
+    catch /^\d\+$/
+	Xpath 2048				" X: 2048
+    endtry
+
+    try
+	Xpath 4096				" X: 4096
+	throw "arrgh"
+	Xpath 8192				" X: 0
+    catch /arrgh/
+	Xpath 16384				" X: 16384
+    endtry
+
+    try
+	Xpath 32768				" X: 32768
+	throw "arrgh"
+	Xpath 65536				" X: 0
+    catch /^arrgh$/
+	Xpath 131072				" X: 131072
+    endtry
+
+    try
+	Xpath 262144				" X: 262144
+	throw "arrgh"
+	Xpath 524288				" X: 0
+    catch /\l/
+	Xpath 1048576				" X: 1048576
+    endtry
+
+    try
+	Xpath 2097152				" X: 2097152
+	throw "arrgh"
+	Xpath 4194304				" X: 0
+    catch /^\l\+$/
+	Xpath 8388608				" X: 8388608
+    endtry
+
+    try
+	try
+	    Xpath 16777216			" X: 16777216
+	    throw "ARRGH"
+	    Xpath 33554432			" X: 0
+	catch /^arrgh$/
+	    Xpath 67108864			" X: 0
+	endtry
+    catch /^\carrgh$/
+	Xpath 134217728				" X: 134217728
+    endtry
+
+    try
+	Xpath 268435456				" X: 268435456
+	throw ""
+	Xpath 536870912				" X: 0
+    catch /^$/
+	Xpath 1073741824			" X: 1073741824
+    endtry
+
+catch /.*/
+    " The Xpath command does not accept 2^31 (negative); add explicitly:
+    let Xpath = Xpath + 2147483648		" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+Xcheck 1505155949
+
+
+"-------------------------------------------------------------------------------
+" Test 43:  Selecting the correct :catch clause				    {{{1
+"
+"	    When an exception is thrown and there are multiple :catch clauses,
+"	    the first matching one is taken.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+XloopINIT 1 1024
+let loops = 3
+while loops > 0
+    try
+	if loops == 3
+	    Xloop 1				" X: 1
+	    throw "a"
+	    Xloop 2				" X: 0
+	elseif loops == 2
+	    Xloop 4				" X: 4*1024
+	    throw "ab"
+	    Xloop 8				" X: 0
+	elseif loops == 1
+	    Xloop 16				" X: 16*1024*1024
+	    throw "abc"
+	    Xloop 32				" X: 0
+	endif
+    catch /abc/
+	Xloop 64				" X: 64*1024*1024
+    catch /ab/
+	Xloop 128				" X: 128*1024
+    catch /.*/
+	Xloop 256				" X: 256
+    catch /a/
+	Xloop 512				" X: 0
+    endtry
+
+    let loops = loops - 1
+    XloopNEXT
+endwhile
+Xpath 1073741824				" X: 1073741824
+
+unlet loops
+
+Xcheck 1157763329
+
+
+"-------------------------------------------------------------------------------
+" Test 44:  Missing or empty :catch patterns				    {{{1
+"
+"	    A missing or empty :catch pattern means the same as /.*/, that is,
+"	    catches everything.  To catch only empty exceptions, /^$/ must be
+"	    used.  A :catch with missing, empty, or /.*/ argument also works
+"	    when followed by another command separated by a bar on the same
+"	    line.  :catch patterns cannot be specified between ||.  But other
+"	    pattern separators can be used instead of //.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+try
+    try
+	Xpath 1					" X: 1
+	throw ""
+    catch /^$/
+	Xpath 2					" X: 2
+    endtry
+
+    try
+	Xpath 4					" X: 4
+	throw ""
+    catch /.*/
+	Xpath 8					" X: 8
+    endtry
+
+    try
+	Xpath 16				" X: 16
+	throw ""
+    catch //
+	Xpath 32				" X: 32
+    endtry
+
+    try
+	Xpath 64				" X: 64
+	throw ""
+    catch
+	Xpath 128				" X: 128
+    endtry
+
+    try
+	Xpath 256				" X: 256
+	throw "oops"
+    catch /^$/
+	Xpath 512				" X: 0
+    catch /.*/
+	Xpath 1024				" X: 1024
+    endtry
+
+    try
+	Xpath 2048				" X: 2048
+	throw "arrgh"
+    catch /^$/
+	Xpath 4096				" X: 0
+    catch //
+	Xpath 8192				" X: 8192
+    endtry
+
+    try
+	Xpath 16384				" X: 16384
+	throw "brrr"
+    catch /^$/
+	Xpath 32768				" X: 0
+    catch
+	Xpath 65536				" X: 65536
+    endtry
+
+    try | Xpath 131072 | throw "x" | catch /.*/ | Xpath 262144 | endtry
+						" X: 131072 + 262144
+
+    try | Xpath 524288 | throw "y" | catch // | Xpath 1048576 | endtry
+						" X: 524288 + 1048576
+
+    while 1
+	try
+	    let caught = 0
+	    let v:errmsg = ""
+	    " Extra try level:  if ":catch" without arguments below raises
+	    " a syntax error because it misinterprets the "Xpath" as a pattern,
+	    " let it be caught by the ":catch /.*/" below.
+	    try
+		try | Xpath 2097152 | throw "z" | catch | Xpath 4194304 | :
+		endtry				" X: 2097152 + 4194304
+	    endtry
+	catch /.*/
+	    let caught = 1
+	    Xout v:exception "in" v:throwpoint
+	finally
+	    if $VIMNOERRTHROW && v:errmsg != ""
+		Xout v:errmsg
+	    endif
+	    if caught || $VIMNOERRTHROW && v:errmsg != ""
+		Xpath 8388608				" X: 0
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+
+    let cologne = 4711
+    try
+	try
+	    Xpath 16777216			" X: 16777216
+	    throw "throw cologne"
+	" Next lines catches all and throws 4711:
+	catch |throw cologne|
+	    Xpath 33554432			" X: 0
+	endtry
+    catch /4711/
+	Xpath 67108864				" X: 67108864
+    endtry
+
+    try
+	Xpath 134217728				" X: 134217728
+	throw "plus"
+    catch +plus+
+	Xpath 268435456				" X: 268435456
+    endtry
+
+    Xpath 536870912				" X: 536870912
+catch /.*/
+    Xpath 1073741824				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+unlet! caught cologne
+
+Xcheck 1031761407
+
+
+"-------------------------------------------------------------------------------
+" Test 45:  Catching exceptions from nested :try blocks			    {{{1
+"
+"	    When :try blocks are nested, an exception is caught by the innermost
+"	    try conditional that has a matching :catch clause.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+XloopINIT 1 1024
+let loops = 3
+while loops > 0
+    try
+	try
+	    try
+		try
+		    if loops == 3
+			Xloop 1			" X: 1
+			throw "a"
+			Xloop 2			" X: 0
+		    elseif loops == 2
+			Xloop 4			" X: 4*1024
+			throw "ab"
+			Xloop 8			" X: 0
+		    elseif loops == 1
+			Xloop 16		" X: 16*1024*1024
+			throw "abc"
+			Xloop 32		" X: 0
+		    endif
+		catch /abc/
+		    Xloop 64			" X: 64*1024*1024
+		endtry
+	    catch /ab/
+		Xloop 128			" X: 128*1024
+	    endtry
+	catch /.*/
+	    Xloop 256				" X: 256
+	endtry
+    catch /a/
+	Xloop 512				" X: 0
+    endtry
+
+    let loops = loops - 1
+    XloopNEXT
+endwhile
+Xpath 1073741824				" X: 1073741824
+
+unlet loops
+
+Xcheck 1157763329
+
+
+"-------------------------------------------------------------------------------
+" Test 46:  Executing :finally after a :throw in nested :try		    {{{1
+"
+"	    When an exception is thrown from within nested :try blocks, the
+"	    :finally clauses of the non-catching try conditionals should be
+"	    executed before the matching :catch of the next surrounding :try
+"	    gets the control.  If this also has a :finally clause, it is
+"	    executed afterwards.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let sum = 0
+
+try
+    Xpath 1					" X: 1
+    try
+	Xpath 2					" X: 2
+	try
+	    Xpath 4				" X: 4
+	    try
+		Xpath 8				" X: 8
+		throw "ABC"
+		Xpath 16			" X: 0
+	    catch /xyz/
+		Xpath 32			" X: 0
+	    finally
+		Xpath 64			" X: 64
+		if sum != 0
+		    Xpath 128			" X: 0
+		endif
+		let sum = sum + 1
+	    endtry
+	    Xpath 256				" X: 0
+	catch /123/
+	    Xpath 512				" X: 0
+	catch /321/
+	    Xpath 1024				" X: 0
+	finally
+	    Xpath 2048				" X: 2048
+	    if sum != 1
+		Xpath 4096			" X: 0
+	    endif
+	    let sum = sum + 2
+	endtry
+	Xpath 8192				" X: 0
+    finally
+	Xpath 16384				" X: 16384
+	if sum != 3
+	    Xpath 32768				" X: 0
+	endif
+	let sum = sum + 4
+    endtry
+    Xpath 65536					" X: 0
+catch /ABC/
+    Xpath 131072				" X: 131072
+    if sum != 7
+	Xpath 262144				" X: 0
+    endif
+    let sum = sum + 8
+finally
+    Xpath 524288				" X: 524288
+    if sum != 15
+	Xpath 1048576				" X: 0
+    endif
+    let sum = sum + 16
+endtry
+Xpath 65536					" X: 65536
+if sum != 31
+    Xpath 131072				" X: 0
+endif
+
+unlet sum
+
+Xcheck 739407
+
+
+"-------------------------------------------------------------------------------
+" Test 47:  Throwing exceptions from a :catch clause			    {{{1
+"
+"	    When an exception is thrown from a :catch clause, it should not be
+"	    caught by a :catch of the same :try conditional.  After executing
+"	    the :finally clause (if present), surrounding try conditionals
+"	    should be checked for a matching :catch.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+Xpath 1						" X: 1
+try
+    Xpath 2					" X: 2
+    try
+	Xpath 4					" X: 4
+	try
+	    Xpath 8				" X: 8
+	    throw "x1"
+	    Xpath 16				" X: 0
+	catch /x1/
+	    Xpath 32				" X: 32
+	    try
+		Xpath 64			" X: 64
+		throw "x2"
+		Xpath 128			" X: 0
+	    catch /x1/
+		Xpath 256			" X: 0
+	    catch /x2/
+		Xpath 512			" X: 512
+		try
+		    Xpath 1024			" X: 1024
+		    throw "x3"
+		    Xpath 2048			" X: 0
+		catch /x1/
+		    Xpath 4096			" X: 0
+		catch /x2/
+		    Xpath 8192			" X: 0
+		finally
+		    Xpath 16384			" X: 16384
+		endtry
+		Xpath 32768			" X: 0
+	    catch /x3/
+		Xpath 65536			" X: 0
+	    endtry
+	    Xpath 131072			" X: 0
+	catch /x1/
+	    Xpath 262144			" X: 0
+	catch /x2/
+	    Xpath 524288			" X: 0
+	catch /x3/
+	    Xpath 1048576			" X: 0
+	finally
+	    Xpath 2097152			" X: 2097152
+	endtry
+	Xpath 4194304				" X: 0
+    catch /x1/
+	Xpath 8388608				" X: 0
+    catch /x2/
+	Xpath 16777216				" X: 0
+    catch /x3/
+	Xpath 33554432				" X: 33554432
+    endtry
+    Xpath 67108864				" X: 67108864
+catch /.*/
+    Xpath 134217728				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+Xpath 268435456					" X: 268435456
+
+Xcheck 371213935
+
+
+"-------------------------------------------------------------------------------
+" Test 48:  Throwing exceptions from a :finally clause			    {{{1
+"
+"	    When an exception is thrown from a :finally clause, it should not be
+"	    caught by a :catch of the same :try conditional.  Surrounding try
+"	    conditionals should be checked for a matching :catch.  A previously
+"	    thrown exception is discarded.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+try
+
+    try
+	try
+	    Xpath 1				" X: 1
+	catch /x1/
+	    Xpath 2				" X: 0
+	finally
+	    Xpath 4				" X: 4
+	    throw "x1"
+	    Xpath 8				" X: 0
+	endtry
+	Xpath 16				" X: 0
+    catch /x1/
+	Xpath 32				" X: 32
+    endtry
+    Xpath 64					" X: 64
+
+    try
+	try
+	    Xpath 128				" X: 128
+	    throw "x2"
+	    Xpath 256				" X: 0
+	catch /x2/
+	    Xpath 512				" X: 512
+	catch /x3/
+	    Xpath 1024				" X: 0
+	finally
+	    Xpath 2048				" X: 2048
+	    throw "x3"
+	    Xpath 4096				" X: 0
+	endtry
+	Xpath 8192				" X: 0
+    catch /x2/
+	Xpath 16384				" X: 0
+    catch /x3/
+	Xpath 32768				" X: 32768
+    endtry
+    Xpath 65536					" X: 65536
+
+    try
+	try
+	    try
+		Xpath 131072			" X: 131072
+		throw "x4"
+		Xpath 262144			" X: 0
+	    catch /x5/
+		Xpath 524288			" X: 0
+	    finally
+		Xpath 1048576			" X: 1048576
+		throw "x5"	" discards "x4"
+		Xpath 2097152			" X: 0
+	    endtry
+	    Xpath 4194304			" X: 0
+	catch /x4/
+	    Xpath 8388608			" X: 0
+	finally
+	    Xpath 16777216			" X: 16777216
+	endtry
+	Xpath 33554432				" X: 0
+    catch /x5/
+	Xpath 67108864				" X: 67108864
+    endtry
+    Xpath 134217728				" X: 134217728
+
+catch /.*/
+    Xpath 268435456				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+Xpath 536870912					" X: 536870912
+
+Xcheck 756255461
+
+
+"-------------------------------------------------------------------------------
+" Test 49:  Throwing exceptions accross functions			    {{{1
+"
+"	    When an exception is thrown but not caught inside a function, the
+"	    caller is checked for a matching :catch clause.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! C()
+    try
+	Xpath 1					" X: 1
+	throw "arrgh"
+	Xpath 2					" X: 0
+    catch /arrgh/
+	Xpath 4					" X: 4
+    endtry
+    Xpath 8					" X: 8
+endfunction
+
+XloopINIT! 16 16
+
+function! T1()
+    XloopNEXT
+    try
+	Xloop 1					" X: 16 + 16*16
+	throw "arrgh"
+	Xloop 2					" X: 0
+    finally
+	Xloop 4					" X: 64 + 64*16
+    endtry
+    Xloop 8					" X: 0
+endfunction
+
+function! T2()
+    try
+	Xpath 4096				" X: 4096
+	call T1()
+	Xpath 8192				" X: 0
+    finally
+	Xpath 16384				" X: 16384
+    endtry
+    Xpath 32768					" X: 0
+endfunction
+
+try
+    Xpath 65536					" X: 65536
+    call C()	" throw and catch
+    Xpath 131072				" X: 131072
+catch /.*/
+    Xpath 262144				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+try
+    Xpath 524288				" X: 524288
+    call T1()  " throw, one level
+    Xpath 1048576				" X: 0
+catch /arrgh/
+    Xpath 2097152				" X: 2097152
+catch /.*/
+    Xpath 4194304				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+try
+    Xpath 8388608				" X: 8388608
+    call T2()	" throw, two levels
+    Xpath 16777216				" X: 0
+catch /arrgh/
+    Xpath 33554432				" X: 33554432
+catch /.*/
+    Xpath 67108864				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+Xpath 134217728					" X: 134217728
+
+Xcheck 179000669
+
+" Leave C, T1, and T2 for execution as scripts in the next test.
+
+
+"-------------------------------------------------------------------------------
+" Test 50:  Throwing exceptions accross script files			    {{{1
+"
+"	    When an exception is thrown but not caught inside a script file,
+"	    the sourcing script or function is checked for a matching :catch
+"	    clause.
+"
+"	    This test executes the bodies of the functions C, T1, and T2 from
+"	    the previous test as script files (:return replaced by :finish).
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let scriptC = MakeScript("C")			" X: 1 + 4 + 8
+delfunction C
+
+XloopINIT! 16 16
+
+let scriptT1 = MakeScript("T1")			" X: 16 + 64 + 16*16 + 64*16
+delfunction T1
+
+let scriptT2 = MakeScript("T2", scriptT1)	" X: 4096 + 16384
+delfunction T2
+
+function! F()
+    try
+	Xpath 65536				" X: 65536
+	exec "source" g:scriptC
+	Xpath 131072				" X: 131072
+    catch /.*/
+	Xpath 262144				" X: 0
+	Xout v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 524288				" X: 524288
+	exec "source" g:scriptT1
+	Xpath 1048576				" X: 0
+    catch /arrgh/
+	Xpath 2097152				" X: 2097152
+    catch /.*/
+	Xpath 4194304				" X: 0
+	Xout v:exception "in" v:throwpoint
+    endtry
+endfunction
+
+try
+    Xpath 8388608				" X: 8388608
+    call F()
+    Xpath 16777216				" X: 16777216
+    exec "source" scriptT2
+    Xpath 33554432				" X: 0
+catch /arrgh/
+    Xpath 67108864				" X: 67108864
+catch /.*/
+    Xpath 134217728				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+Xpath 268435456					" X: 268435456
+
+call delete(scriptC)
+call delete(scriptT1)
+call delete(scriptT2)
+unlet scriptC scriptT1 scriptT2
+delfunction F
+
+Xcheck 363550045
+
+
+"-------------------------------------------------------------------------------
+" Test 51:  Throwing exceptions accross :execute and user commands	    {{{1
+"
+"	    A :throw command may be executed under an ":execute" or from
+"	    a user command.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+command! -nargs=? THROW1    throw <args> | throw 1
+command! -nargs=? THROW2    try | throw <args> | endtry | throw 2
+command! -nargs=? THROW3    try | throw 3 | catch /3/ | throw <args> | endtry
+command! -nargs=? THROW4    try | throw 4 | finally   | throw <args> | endtry
+
+try
+
+    try
+	try
+	    Xpath 1				" X: 1
+	    THROW1 "A"
+	catch /A/
+	    Xpath 2				" X: 2
+	endtry
+    catch /1/
+	Xpath 4					" X: 0
+    endtry
+
+    try
+	try
+	    Xpath 8				" X: 8
+	    THROW2 "B"
+	catch /B/
+	    Xpath 16				" X: 16
+	endtry
+    catch /2/
+	Xpath 32				" X: 0
+    endtry
+
+    try
+	try
+	    Xpath 64				" X: 64
+	    THROW3 "C"
+	catch /C/
+	    Xpath 128				" X: 128
+	endtry
+    catch /3/
+	Xpath 256				" X: 0
+    endtry
+
+    try
+	try
+	    Xpath 512				" X: 512
+	    THROW4 "D"
+	catch /D/
+	    Xpath 1024				" X: 1024
+	endtry
+    catch /4/
+	Xpath 2048				" X: 0
+    endtry
+
+    try
+	try
+	    Xpath 4096				" X: 4096
+	    execute 'throw "E" | throw 5'
+	catch /E/
+	    Xpath 8192				" X: 8192
+	endtry
+    catch /5/
+	Xpath 16384				" X: 0
+    endtry
+
+    try
+	try
+	    Xpath 32768				" X: 32768
+	    execute 'try | throw "F" | endtry | throw 6'
+	catch /F/
+	    Xpath 65536				" X: 65536
+	endtry
+    catch /6/
+	Xpath 131072				" X: 0
+    endtry
+
+    try
+	try
+	    Xpath 262144			" X: 262144
+	    execute'try | throw 7 | catch /7/ | throw "G" | endtry'
+	catch /G/
+	    Xpath 524288			" X: 524288
+	endtry
+    catch /7/
+	Xpath 1048576				" X: 0
+    endtry
+
+    try
+	try
+	    Xpath 2097152			" X: 2097152
+	    execute 'try | throw 8 | finally   | throw "H" | endtry'
+	catch /H/
+	    Xpath 4194304			" X: 4194304
+	endtry
+    catch /8/
+	Xpath 8388608				" X: 0
+    endtry
+
+catch /.*/
+    Xpath 16777216				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+Xpath 33554432					" X: 33554432
+
+delcommand THROW1
+delcommand THROW2
+delcommand THROW3
+delcommand THROW4
+
+Xcheck 40744667
+
+
+"-------------------------------------------------------------------------------
+" Test 52:  Uncaught exceptions						    {{{1
+"
+"	    When an exception is thrown but not caught, an error message is
+"	    displayed when the script is terminated.  In case of an interrupt
+"	    or error exception, the normal interrupt or error message(s) are
+"	    displayed.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let msgfile = tempname()
+
+function! MESSAGES(...)
+    try
+	exec "edit" g:msgfile
+    catch /^Vim(edit):/
+	return 0
+    endtry
+
+    let english = v:lang == "C" || v:lang =~ '^[Ee]n'
+    let match = 1
+    norm gg
+
+    let num = a:0 / 2
+    let cnt = 1
+    while cnt <= num
+	let enr = a:{2*cnt - 1}
+	let emsg= a:{2*cnt}
+	let cnt = cnt + 1
+
+	if enr == ""
+	    Xout "TODO: Add message number for:" emsg
+	elseif enr == "INT"
+	    let enr = ""
+	endif
+	if enr == "" && !english
+	    continue
+	endif
+	let pattern = (enr != "") ? enr . ':.*' : ''
+	if english
+	    let pattern = pattern . emsg
+	endif
+	if !search(pattern, "W")
+	    let match = 0
+	    Xout "No match for:" pattern
+	endif
+	norm $
+    endwhile
+
+    bwipeout!
+    return match
+endfunction
+
+if ExtraVim(msgfile)
+    Xpath 1					" X: 1
+    throw "arrgh"
+endif
+
+Xpath 2						" X: 2
+if !MESSAGES('E605', "Exception not caught")
+    Xpath 4					" X: 0
+endif
+
+if ExtraVim(msgfile)
+    try
+	Xpath 8					" X: 8
+	throw "oops"
+    catch /arrgh/
+	Xpath 16				" X: 0
+    endtry
+    Xpath 32					" X: 0
+endif
+
+Xpath 64					" X: 64
+if !MESSAGES('E605', "Exception not caught")
+    Xpath 128					" X: 0
+endif
+
+if ExtraVim(msgfile)
+    function! T()
+	throw "brrr"
+    endfunction
+
+    try
+	Xpath 256				" X: 256
+	throw "arrgh"
+    catch /.*/
+	Xpath 512				" X: 512
+	call T()
+    endtry
+    Xpath 1024					" X: 0
+endif
+
+Xpath 2048					" X: 2048
+if !MESSAGES('E605', "Exception not caught")
+    Xpath 4096					" X: 0
+endif
+
+if ExtraVim(msgfile)
+    try
+	Xpath 8192				" X: 8192
+	throw "arrgh"
+    finally
+	Xpath 16384				" X: 16384
+	throw "brrr"
+    endtry
+    Xpath 32768					" X: 0
+endif
+
+Xpath 65536					" X: 65536
+if !MESSAGES('E605', "Exception not caught")
+    Xpath 131072				" X: 0
+endif
+
+if ExtraVim(msgfile)
+    try
+	Xpath 262144				" X: 262144
+	"INTERRUPT
+    endtry
+    Xpath 524288				" X: 0
+endif
+
+Xpath 1048576					" X: 1048576
+if !MESSAGES('INT', "Interrupted")
+    Xpath 2097152				" X: 0
+endif
+
+if ExtraVim(msgfile)
+    try
+	Xpath 4194304				" X: 4194304
+	let x = novar	" error E121/E15; exception: E121
+    catch /E15:/	" should not catch
+	Xpath 8388608				" X: 0
+    endtry
+    Xpath 16777216				" X: 0
+endif
+
+Xpath 33554432					" X: 33554432
+if !MESSAGES('E121', "Undefined variable", 'E15', "Invalid expression")
+    Xpath 67108864				" X: 0
+endif
+
+if ExtraVim(msgfile)
+    try
+	Xpath 134217728				" X: 134217728
+"	unlet novar #	" error E108/E488; exception: E488
+    catch /E108:/	" should not catch
+	Xpath 268435456				" X: 0
+    endtry
+    Xpath 536870912				" X: 0
+endif
+
+Xpath 1073741824				" X: 1073741824
+if !MESSAGES('E108', "No such variable", 'E488', "Trailing characters")
+    " The Xpath command does not accept 2^31 (negative); add explicitly:
+    let Xpath = Xpath + 2147483648		" X: 0
+endif
+
+call delete(msgfile)
+unlet msgfile
+
+Xcheck 1247112011
+
+" Leave MESSAGES() for the next tests.
+
+
+"-------------------------------------------------------------------------------
+" Test 53:  Nesting errors: :endif/:else/:elseif			    {{{1
+"
+"	    For nesting errors of :if conditionals the correct error messages
+"	    should be given.
+"
+"	    This test reuses the function MESSAGES() from the previous test.
+"	    This functions checks the messages in g:msgfile.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let msgfile = tempname()
+
+if ExtraVim(msgfile)
+"   endif
+endif
+if MESSAGES('E580', ":endif without :if")
+    Xpath 1					" X: 1
+endif
+
+if ExtraVim(msgfile)
+"   while 1
+"       endif
+"   endwhile
+endif
+if MESSAGES('E580', ":endif without :if")
+    Xpath 2					" X: 2
+endif
+
+if ExtraVim(msgfile)
+"   try
+"   finally
+"       endif
+"   endtry
+endif
+if MESSAGES('E580', ":endif without :if")
+    Xpath 4					" X: 4
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       endif
+"   endtry
+endif
+if MESSAGES('E580', ":endif without :if")
+    Xpath 8					" X: 8
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       throw "a"
+"   catch /a/
+"       endif
+"   endtry
+endif
+if MESSAGES('E580', ":endif without :if")
+    Xpath 16					" X: 16
+endif
+
+if ExtraVim(msgfile)
+"   else
+endif
+if MESSAGES('E581', ":else without :if")
+    Xpath 32					" X: 32
+endif
+
+if ExtraVim(msgfile)
+"   while 1
+"       else
+"   endwhile
+endif
+if MESSAGES('E581', ":else without :if")
+    Xpath 64					" X: 64
+endif
+
+if ExtraVim(msgfile)
+"   try
+"   finally
+"       else
+"   endtry
+endif
+if MESSAGES('E581', ":else without :if")
+    Xpath 128					" X: 128
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       else
+"   endtry
+endif
+if MESSAGES('E581', ":else without :if")
+    Xpath 256					" X: 256
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       throw "a"
+"   catch /a/
+"       else
+"   endtry
+endif
+if MESSAGES('E581', ":else without :if")
+    Xpath 512					" X: 512
+endif
+
+if ExtraVim(msgfile)
+"   elseif
+endif
+if MESSAGES('E582', ":elseif without :if")
+    Xpath 1024					" X: 1024
+endif
+
+if ExtraVim(msgfile)
+"   while 1
+"       elseif
+"   endwhile
+endif
+if MESSAGES('E582', ":elseif without :if")
+    Xpath 2048					" X: 2048
+endif
+
+if ExtraVim(msgfile)
+"   try
+"   finally
+"       elseif
+"   endtry
+endif
+if MESSAGES('E582', ":elseif without :if")
+    Xpath 4096					" X: 4096
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       elseif
+"   endtry
+endif
+if MESSAGES('E582', ":elseif without :if")
+    Xpath 8192					" X: 8192
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       throw "a"
+"   catch /a/
+"       elseif
+"   endtry
+endif
+if MESSAGES('E582', ":elseif without :if")
+    Xpath 16384					" X: 16384
+endif
+
+if ExtraVim(msgfile)
+"   if 1
+"   else
+"   else
+"   endif
+endif
+if MESSAGES('E583', "multiple :else")
+    Xpath 32768					" X: 32768
+endif
+
+if ExtraVim(msgfile)
+"   if 1
+"   else
+"   elseif 1
+"   endif
+endif
+if MESSAGES('E584', ":elseif after :else")
+    Xpath 65536					" X: 65536
+endif
+
+call delete(msgfile)
+unlet msgfile
+
+Xcheck 131071
+
+" Leave MESSAGES() for the next test.
+
+
+"-------------------------------------------------------------------------------
+" Test 54:  Nesting errors: :while/:endwhile				    {{{1
+"
+"	    For nesting errors of :while conditionals the correct error messages
+"	    should be given.
+"
+"	    This test reuses the function MESSAGES() from the previous test.
+"	    This functions checks the messages in g:msgfile.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let msgfile = tempname()
+
+if ExtraVim(msgfile)
+"   endwhile
+endif
+if MESSAGES('E588', ":endwhile without :while")
+    Xpath 1					" X: 1
+endif
+
+if ExtraVim(msgfile)
+"   if 1
+"       endwhile
+"   endif
+endif
+if MESSAGES('E588', ":endwhile without :while")
+    Xpath 2					" X: 2
+endif
+
+if ExtraVim(msgfile)
+"   while 1
+"       if 1
+"   endwhile
+endif
+if MESSAGES('E171', "Missing :endif")
+    Xpath 4					" X: 4
+endif
+
+if ExtraVim(msgfile)
+"   try
+"   finally
+"       endwhile
+"   endtry
+endif
+if MESSAGES('E588', ":endwhile without :while")
+    Xpath 8					" X: 8
+endif
+
+if ExtraVim(msgfile)
+"   while 1
+"       try
+"       finally
+"   endwhile
+endif
+if MESSAGES('E600', "Missing :endtry")
+    Xpath 16					" X: 16
+endif
+
+if ExtraVim(msgfile)
+"   while 1
+"       if 1
+"	    try
+"	    finally
+"   endwhile
+endif
+if MESSAGES('E600', "Missing :endtry")
+    Xpath 32					" X: 32
+endif
+
+if ExtraVim(msgfile)
+"   while 1
+"       try
+"       finally
+"	    if 1
+"   endwhile
+endif
+if MESSAGES('E171', "Missing :endif")
+    Xpath 64					" X: 64
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       endwhile
+"   endtry
+endif
+if MESSAGES('E588', ":endwhile without :while")
+    Xpath 128					" X: 128
+endif
+
+if ExtraVim(msgfile)
+"   while 1
+"       try
+"	    endwhile
+"       endtry
+"   endwhile
+endif
+if MESSAGES('E588', ":endwhile without :while")
+    Xpath 256					" X: 256
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       throw "a"
+"   catch /a/
+"       endwhile
+"   endtry
+endif
+if MESSAGES('E588', ":endwhile without :while")
+    Xpath 512					" X: 512
+endif
+
+if ExtraVim(msgfile)
+"   while 1
+"       try
+"	    throw "a"
+"	catch /a/
+"	    endwhile
+"       endtry
+"   endwhile
+endif
+if MESSAGES('E588', ":endwhile without :while")
+    Xpath 1024					" X: 1024
+endif
+
+
+call delete(msgfile)
+unlet msgfile
+
+Xcheck 2047
+
+" Leave MESSAGES() for the next test.
+
+
+"-------------------------------------------------------------------------------
+" Test 55:  Nesting errors: :continue/:break				    {{{1
+"
+"	    For nesting errors of :continue and :break commands the correct
+"	    error messages should be given.
+"
+"	    This test reuses the function MESSAGES() from the previous test.
+"	    This functions checks the messages in g:msgfile.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let msgfile = tempname()
+
+if ExtraVim(msgfile)
+"   continue
+endif
+if MESSAGES('E586', ":continue without :while")
+    Xpath 1					" X: 1
+endif
+
+if ExtraVim(msgfile)
+"   if 1
+"       continue
+"   endif
+endif
+if MESSAGES('E586', ":continue without :while")
+    Xpath 2					" X: 2
+endif
+
+if ExtraVim(msgfile)
+"   try
+"   finally
+"       continue
+"   endtry
+endif
+if MESSAGES('E586', ":continue without :while")
+    Xpath 4					" X: 4
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       continue
+"   endtry
+endif
+if MESSAGES('E586', ":continue without :while")
+    Xpath 8					" X: 8
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       throw "a"
+"   catch /a/
+"       continue
+"   endtry
+endif
+if MESSAGES('E586', ":continue without :while")
+    Xpath 16					" X: 16
+endif
+
+if ExtraVim(msgfile)
+"   break
+endif
+if MESSAGES('E587', ":break without :while")
+    Xpath 32					" X: 32
+endif
+
+if ExtraVim(msgfile)
+"   if 1
+"       break
+"   endif
+endif
+if MESSAGES('E587', ":break without :while")
+    Xpath 64					" X: 64
+endif
+
+if ExtraVim(msgfile)
+"   try
+"   finally
+"       break
+"   endtry
+endif
+if MESSAGES('E587', ":break without :while")
+    Xpath 128					" X: 128
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       break
+"   endtry
+endif
+if MESSAGES('E587', ":break without :while")
+    Xpath 256					" X: 256
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       throw "a"
+"   catch /a/
+"       break
+"   endtry
+endif
+if MESSAGES('E587', ":break without :while")
+    Xpath 512					" X: 512
+endif
+
+call delete(msgfile)
+unlet msgfile
+
+Xcheck 1023
+
+" Leave MESSAGES() for the next test.
+
+
+"-------------------------------------------------------------------------------
+" Test 56:  Nesting errors: :endtry					    {{{1
+"
+"	    For nesting errors of :try conditionals the correct error messages
+"	    should be given.
+"
+"	    This test reuses the function MESSAGES() from the previous test.
+"	    This functions checks the messages in g:msgfile.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let msgfile = tempname()
+
+if ExtraVim(msgfile)
+"   endtry
+endif
+if MESSAGES('E602', ":endtry without :try")
+    Xpath 1					" X: 1
+endif
+
+if ExtraVim(msgfile)
+"   if 1
+"       endtry
+"   endif
+endif
+if MESSAGES('E602', ":endtry without :try")
+    Xpath 2					" X: 2
+endif
+
+if ExtraVim(msgfile)
+"   while 1
+"       endtry
+"   endwhile
+endif
+if MESSAGES('E602', ":endtry without :try")
+    Xpath 4					" X: 4
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       if 1
+"   endtry
+endif
+if MESSAGES('E171', "Missing :endif")
+    Xpath 8					" X: 8
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       while 1
+"   endtry
+endif
+if MESSAGES('E170', "Missing :endwhile")
+    Xpath 16					" X: 16
+endif
+
+if ExtraVim(msgfile)
+"   try
+"   finally
+"       if 1
+"   endtry
+endif
+if MESSAGES('E171', "Missing :endif")
+    Xpath 32					" X: 32
+endif
+
+if ExtraVim(msgfile)
+"   try
+"   finally
+"       while 1
+"   endtry
+endif
+if MESSAGES('E170', "Missing :endwhile")
+    Xpath 64					" X: 64
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       throw "a"
+"   catch /a/
+"       if 1
+"   endtry
+endif
+if MESSAGES('E171', "Missing :endif")
+    Xpath 128					" X: 128
+endif
+
+if ExtraVim(msgfile)
+"   try
+"       throw "a"
+"   catch /a/
+"       while 1
+"   endtry
+endif
+if MESSAGES('E170', "Missing :endwhile")
+    Xpath 256					" X: 256
+endif
+
+call delete(msgfile)
+unlet msgfile
+
+delfunction MESSAGES
+
+Xcheck 511
+
+
+"-------------------------------------------------------------------------------
+" Test 57:  v:exception and v:throwpoint for user exceptions		    {{{1
+"
+"	    v:exception evaluates to the value of the exception that was caught
+"	    most recently and is not finished.  (A caught exception is finished
+"	    when the next ":catch", ":finally", or ":endtry" is reached.)
+"	    v:throwpoint evaluates to the script/function name and line number
+"	    where that exception has been thrown.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! FuncException()
+    let g:exception = v:exception
+endfunction
+
+function! FuncThrowpoint()
+    let g:throwpoint = v:throwpoint
+endfunction
+
+let scriptException  = MakeScript("FuncException")
+let scriptThrowPoint = MakeScript("FuncThrowpoint")
+
+command! CmdException  let g:exception  = v:exception
+command! CmdThrowpoint let g:throwpoint = v:throwpoint
+
+XloopINIT! 1 2
+
+function! CHECK(n, exception, throwname, throwline)
+    XloopNEXT
+    let error = 0
+    if v:exception != a:exception
+	Xout a:n.": v:exception is" v:exception "instead of" a:exception
+	let error = 1
+    endif
+    if v:throwpoint !~ a:throwname
+	let name = escape(a:throwname, '\')
+	Xout a:n.": v:throwpoint (".v:throwpoint.") does not match" name
+	let error = 1
+    endif
+    if v:throwpoint !~ a:throwline
+	let line = escape(a:throwline, '\')
+	Xout a:n.": v:throwpoint (".v:throwpoint.") does not match" line
+	let error = 1
+    endif
+    if error
+	Xloop 1					" X: 0
+    endif
+endfunction
+
+function! T(arg, line)
+    if a:line == 2
+	throw a:arg		" in line 2
+    elseif a:line == 4
+	throw a:arg		" in line 4
+    elseif a:line == 6
+	throw a:arg		" in line 6
+    elseif a:line == 8
+	throw a:arg		" in line 8
+    endif
+endfunction
+
+function! G(arg, line)
+    call T(a:arg, a:line)
+endfunction
+
+function! F(arg, line)
+    call G(a:arg, a:line)
+endfunction
+
+let scriptT = MakeScript("T")
+let scriptG = MakeScript("G", scriptT)
+let scriptF = MakeScript("F", scriptG)
+
+try
+    Xpath 32768					" X: 32768
+    call F("oops", 2)
+catch /.*/
+    Xpath 65536					" X: 65536
+    let exception  = v:exception
+    let throwpoint = v:throwpoint
+    call CHECK(1, "oops", '\<F\.\.G\.\.T\>', '\<2\>')
+    exec "let exception  = v:exception"
+    exec "let throwpoint = v:throwpoint"
+    call CHECK(2, "oops", '\<F\.\.G\.\.T\>', '\<2\>')
+    CmdException
+    CmdThrowpoint
+    call CHECK(3, "oops", '\<F\.\.G\.\.T\>', '\<2\>')
+    call FuncException()
+    call FuncThrowpoint()
+    call CHECK(4, "oops", '\<F\.\.G\.\.T\>', '\<2\>')
+    exec "source" scriptException
+    exec "source" scriptThrowPoint
+    call CHECK(5, "oops", '\<F\.\.G\.\.T\>', '\<2\>')
+    try
+	Xpath 131072				" X: 131072
+	call G("arrgh", 4)
+    catch /.*/
+	Xpath 262144				" X: 262144
+	let exception  = v:exception
+	let throwpoint = v:throwpoint
+	call CHECK(6, "arrgh", '\<G\.\.T\>', '\<4\>')
+	try
+	    Xpath 524288			" X: 524288
+	    let g:arg = "autsch"
+	    let g:line = 6
+	    exec "source" scriptF
+	catch /.*/
+	    Xpath 1048576			" X: 1048576
+	    let exception  = v:exception
+	    let throwpoint = v:throwpoint
+	    " Symbolic links in tempname()s are not resolved, whereas resolving
+	    " is done for v:throwpoint.  Resolve the temporary file name for
+	    " scriptT, so that it can be matched against v:throwpoint.
+	    call CHECK(7, "autsch", resolve(scriptT), '\<6\>')
+	finally
+	    Xpath 2097152			" X: 2097152
+	    let exception  = v:exception
+	    let throwpoint = v:throwpoint
+	    call CHECK(8, "arrgh", '\<G\.\.T\>', '\<4\>')
+	    try
+		Xpath 4194304			" X: 4194304
+		let g:arg = "brrrr"
+		let g:line = 8
+		exec "source" scriptG
+	    catch /.*/
+		Xpath 8388608			" X: 8388608
+		let exception  = v:exception
+		let throwpoint = v:throwpoint
+		" Resolve scriptT for matching it against v:throwpoint.
+		call CHECK(9, "brrrr", resolve(scriptT), '\<8\>')
+	    finally
+		Xpath 16777216			" X: 16777216
+		let exception  = v:exception
+		let throwpoint = v:throwpoint
+		call CHECK(10, "arrgh", '\<G\.\.T\>', '\<4\>')
+	    endtry
+	    Xpath 33554432			" X: 33554432
+	    let exception  = v:exception
+	    let throwpoint = v:throwpoint
+	    call CHECK(11, "arrgh", '\<G\.\.T\>', '\<4\>')
+	endtry
+	Xpath 67108864				" X: 67108864
+	let exception  = v:exception
+	let throwpoint = v:throwpoint
+	call CHECK(12, "arrgh", '\<G\.\.T\>', '\<4\>')
+    finally
+	Xpath 134217728				" X: 134217728
+	let exception  = v:exception
+	let throwpoint = v:throwpoint
+	call CHECK(13, "oops", '\<F\.\.G\.\.T\>', '\<2\>')
+    endtry
+    Xpath 268435456				" X: 268435456
+    let exception  = v:exception
+    let throwpoint = v:throwpoint
+    call CHECK(14, "oops", '\<F\.\.G\.\.T\>', '\<2\>')
+finally
+    Xpath 536870912				" X: 536870912
+    let exception  = v:exception
+    let throwpoint = v:throwpoint
+    call CHECK(15, "", '^$', '^$')
+endtry
+
+Xpath 1073741824				" X: 1073741824
+
+unlet exception throwpoint
+delfunction FuncException
+delfunction FuncThrowpoint
+call delete(scriptException)
+call delete(scriptThrowPoint)
+unlet scriptException scriptThrowPoint
+delcommand CmdException
+delcommand CmdThrowpoint
+delfunction T
+delfunction G
+delfunction F
+call delete(scriptT)
+call delete(scriptG)
+call delete(scriptF)
+unlet scriptT scriptG scriptF
+
+Xcheck 2147450880
+
+
+"-------------------------------------------------------------------------------
+"
+" Test 58:  v:exception and v:throwpoint for error/interrupt exceptions	    {{{1
+"
+"	    v:exception and v:throwpoint work also for error and interrupt
+"	    exceptions.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    function! T(line)
+	if a:line == 2
+	    delfunction T		" error (function in use) in line 2
+	elseif a:line == 4
+	    let dummy = 0		" INTERRUPT1 - interrupt in line 4
+	endif
+    endfunction
+
+    while 1
+	try
+	    Xpath 1				" X: 1
+	    let caught = 0
+	    call T(2)
+	catch /.*/
+	    let caught = 1
+	    if v:exception !~ 'Vim(delfunction):'
+		Xpath 2				" X: 0
+	    endif
+	    if v:throwpoint !~ '\<T\>'
+		Xpath 4				" X: 0
+	    endif
+	    if v:throwpoint !~ '\<2\>'
+		Xpath 8				" X: 0
+	    endif
+	finally
+	    Xpath 16				" X: 16
+	    if caught || $VIMNOERRTHROW
+		Xpath 32			" X: 32
+	    endif
+	    if v:exception != ""
+		Xpath 64			" X: 0
+	    endif
+	    if v:throwpoint != ""
+		Xpath 128			" X: 0
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+
+    Xpath 256					" X: 256
+    if v:exception != ""
+	Xpath 512				" X: 0
+    endif
+    if v:throwpoint != ""
+	Xpath 1024				" X: 0
+    endif
+
+    while 1
+	try
+	    Xpath 2048				" X: 2048
+	    let caught = 0
+	    call T(4)
+	catch /.*/
+	    let caught = 1
+	    if v:exception != 'Vim:Interrupt'
+		Xpath 4096			" X: 0
+	    endif
+	    if v:throwpoint !~ '\<T\>'
+		Xpath 8192			" X: 0
+	    endif
+	    if v:throwpoint !~ '\<4\>'
+		Xpath 16384			" X: 0
+	    endif
+	finally
+	    Xpath 32768				" X: 32768
+	    if caught || $VIMNOINTTHROW
+		Xpath 65536			" X: 65536
+	    endif
+	    if v:exception != ""
+		Xpath 131072			" X: 0
+	    endif
+	    if v:throwpoint != ""
+		Xpath 262144			" X: 0
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+
+    Xpath 524288				" X: 524288
+    if v:exception != ""
+	Xpath 1048576				" X: 0
+    endif
+    if v:throwpoint != ""
+	Xpath 2097152				" X: 0
+    endif
+
+endif
+
+Xcheck 624945
+
+
+"-------------------------------------------------------------------------------
+"
+" Test 59:  v:exception and v:throwpoint when discarding exceptions	    {{{1
+"
+"	    When a :catch clause is left by a ":break" etc or an error or
+"	    interrupt exception, v:exception and v:throwpoint are reset.  They
+"	    are not affected by an exception that is discarded before being
+"	    caught.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    XloopINIT! 1 2
+
+    let sfile = expand("<sfile>")
+
+    function! LineNumber()
+	return substitute(substitute(v:throwpoint, g:sfile, '', ""),
+	    \ '\D*\(\d*\).*', '\1', "")
+    endfunction
+
+    command! -nargs=1 SetLineNumber
+	\ try | throw "line" | catch /.*/ | let <args> =  LineNumber() | endtry
+
+    " Check v:exception/v:throwpoint against second/fourth parameter if
+    " specified, check for being empty else.
+    function! CHECK(n, ...)
+	XloopNEXT
+	let exception = a:0 != 0 ? a:1 : ""	" second parameter (optional)
+	let emsg      = a:0 != 0 ? a:2 : ""	" third parameter (optional)
+	let line      = a:0 != 0 ? a:3 : 0	" fourth parameter (optional)
+	let error = 0
+	if emsg != ""
+	    " exception is the error number, emsg the english error message text
+	    if exception !~ '^E\d\+$'
+		Xout "TODO: Add message number for:" emsg
+	    elseif v:lang == "C" || v:lang =~ '^[Ee]n'
+		if exception == "E492" && emsg == "Not an editor command"
+		    let exception = '^Vim:' . exception . ': ' . emsg
+		else
+		    let exception = '^Vim(\a\+):' . exception . ': ' . emsg
+		endif
+	    else
+		if exception == "E492"
+		    let exception = '^Vim:' . exception
+		else
+		    let exception = '^Vim(\a\+):' . exception
+		endif
+	    endif
+	endif
+	if exception == "" && v:exception != ""
+	    Xout a:n.": v:exception is set:" v:exception
+	    let error = 1
+	elseif exception != "" && v:exception !~ exception
+	    Xout a:n.": v:exception (".v:exception.") does not match" exception
+	    let error = 1
+	endif
+	if line == 0 && v:throwpoint != ""
+	    Xout a:n.": v:throwpoint is set:" v:throwpoint
+	    let error = 1
+	elseif line != 0 && v:throwpoint !~ '\<' . line . '\>'
+	    Xout a:n.": v:throwpoint (".v:throwpoint.") does not match" line
+	    let error = 1
+	endif
+	if !error
+	    Xloop 1				" X: 2097151
+	endif
+    endfunction
+
+    while 1
+	try
+	    throw "x1"
+	catch /.*/
+	    break
+	endtry
+    endwhile
+    call CHECK(1)
+
+    while 1
+	try
+	    throw "x2"
+	catch /.*/
+	    break
+	finally
+	    call CHECK(2)
+	endtry
+	break
+    endwhile
+    call CHECK(3)
+
+    while 1
+	try
+	    let errcaught = 0
+	    try
+		try
+		    throw "x3"
+		catch /.*/
+		    SetLineNumber line_before_error
+		    asdf
+		endtry
+	    catch /.*/
+		let errcaught = 1
+		call CHECK(4, 'E492', "Not an editor command",
+		    \ line_before_error + 1)
+	    endtry
+	finally
+	    if !errcaught && $VIMNOERRTHROW
+		call CHECK(4)
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+    call CHECK(5)
+
+    Xpath 2097152				" X: 2097152
+
+    while 1
+	try
+	    let intcaught = 0
+	    try
+		try
+		    throw "x4"
+		catch /.*/
+		    SetLineNumber two_lines_before_interrupt
+		    "INTERRUPT
+		    let dummy = 0
+		endtry
+	    catch /.*/
+		let intcaught = 1
+		call CHECK(6, "Vim:Interrupt", '',
+		    \ two_lines_before_interrupt + 2)
+	    endtry
+	finally
+	    if !intcaught && $VIMNOINTTHROW
+		call CHECK(6)
+	    endif
+	    break		" discard interrupt for $VIMNOINTTHROW
+	endtry
+    endwhile
+    call CHECK(7)
+
+    Xpath 4194304				" X: 4194304
+
+    while 1
+	try
+	    let errcaught = 0
+	    try
+		try
+"		    if 1
+			SetLineNumber line_before_throw
+			throw "x5"
+		    " missing endif
+		catch /.*/
+		    Xpath 8388608			" X: 0
+		endtry
+	    catch /.*/
+		let errcaught = 1
+		call CHECK(8, 'E171', "Missing :endif", line_before_throw + 3)
+	    endtry
+	finally
+	    if !errcaught && $VIMNOERRTHROW
+		call CHECK(8)
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+    call CHECK(9)
+
+    Xpath 16777216				" X: 16777216
+
+    try
+	while 1
+	    try
+		throw "x6"
+	    finally
+		break
+	    endtry
+	    break
+	endwhile
+    catch /.*/
+	Xpath 33554432				" X: 0
+    endtry
+    call CHECK(10)
+
+    try
+	while 1
+	    try
+		throw "x7"
+	    finally
+		break
+	    endtry
+	    break
+	endwhile
+    catch /.*/
+	Xpath 67108864				" X: 0
+    finally
+	call CHECK(11)
+    endtry
+    call CHECK(12)
+
+    while 1
+	try
+	    let errcaught = 0
+	    try
+		try
+		    throw "x8"
+		finally
+		    SetLineNumber line_before_error
+		    asdf
+		endtry
+	    catch /.*/
+		let errcaught = 1
+		call CHECK(13, 'E492', "Not an editor command",
+		    \ line_before_error + 1)
+	    endtry
+	finally
+	    if !errcaught && $VIMNOERRTHROW
+		call CHECK(13)
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+    call CHECK(14)
+
+    Xpath 134217728				" X: 134217728
+
+    while 1
+	try
+	    let intcaught = 0
+	    try
+		try
+		    throw "x9"
+		finally
+		    SetLineNumber two_lines_before_interrupt
+		    "INTERRUPT
+		endtry
+	    catch /.*/
+		let intcaught = 1
+		call CHECK(15, "Vim:Interrupt", '',
+		    \ two_lines_before_interrupt + 2)
+	    endtry
+	finally
+	    if !intcaught && $VIMNOINTTHROW
+		call CHECK(15)
+	    endif
+	    break		" discard interrupt for $VIMNOINTTHROW
+	endtry
+    endwhile
+    call CHECK(16)
+
+    Xpath 268435456				" X: 268435456
+
+    while 1
+	try
+	    let errcaught = 0
+	    try
+		try
+"		    if 1
+			SetLineNumber line_before_throw
+			throw "x10"
+		    " missing endif
+		finally
+		    call CHECK(17)
+		endtry
+	    catch /.*/
+		let errcaught = 1
+		call CHECK(18, 'E171', "Missing :endif", line_before_throw + 3)
+	    endtry
+	finally
+	    if !errcaught && $VIMNOERRTHROW
+		call CHECK(18)
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+    call CHECK(19)
+
+    Xpath 536870912				" X: 536870912
+
+    while 1
+	try
+	    let errcaught = 0
+	    try
+		try
+"		    if 1
+			SetLineNumber line_before_throw
+			throw "x11"
+		    " missing endif
+		endtry
+	    catch /.*/
+		let errcaught = 1
+		call CHECK(20, 'E171', "Missing :endif", line_before_throw + 3)
+	    endtry
+	finally
+	    if !errcaught && $VIMNOERRTHROW
+		call CHECK(20)
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+    call CHECK(21)
+
+    Xpath 1073741824				" X: 1073741824
+
+endif
+
+Xcheck 2038431743
+
+
+"-------------------------------------------------------------------------------
+"
+" Test 60:  (Re)throwing v:exception; :echoerr.				    {{{1
+"
+"	    A user exception can be rethrown after catching by throwing
+"	    v:exception.  An error or interrupt exception cannot be rethrown
+"	    because Vim exceptions cannot be faked.  A Vim exception using the
+"	    value of v:exception can, however, be triggered by the :echoerr
+"	    command.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+try
+    try
+	Xpath 1					" X: 1
+	throw "oops"
+    catch /oops/
+	Xpath 2					" X: 2
+	throw v:exception	" rethrow user exception
+    catch /.*/
+	Xpath 4					" X: 0
+    endtry
+catch /^oops$/			" catches rethrown user exception
+    Xpath 8					" X: 8
+catch /.*/
+    Xpath 16					" X: 0
+endtry
+
+function! F()
+    try
+	let caught = 0
+	try
+	    Xpath 32				" X: 32
+	    write /n/o/n/w/r/i/t/a/b/l/e/_/f/i/l/e
+	    Xpath 64				" X: 0
+	    Xout "did_emsg was reset before executing " .
+		\ "BufWritePost autocommands."
+	catch /^Vim(write):/
+	    let caught = 1
+	    throw v:exception	" throw error: cannot fake Vim exception
+	catch /.*/
+	    Xpath 128				" X: 0
+	finally
+	    Xpath 256				" X: 256
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 512			" X: 0
+	    endif
+	endtry
+    catch /^Vim(throw):/	" catches throw error
+	let caught = caught + 1
+    catch /.*/
+	Xpath 1024				" X: 0
+    finally
+	Xpath 2048				" X: 2048
+	if caught != 2
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 4096			" X: 0
+	    elseif caught
+		Xpath 8192			" X: 0
+	    endif
+	    return		| " discard error for $VIMNOERRTHROW
+	endif
+    endtry
+endfunction
+
+call F()
+delfunction F
+
+function! G()
+    try
+	let caught = 0
+	try
+	    Xpath 16384				" X: 16384
+	    asdf
+	catch /^Vim/		" catch error exception
+	    let caught = 1
+	    " Trigger Vim error exception with value specified after :echoerr
+	    let value = substitute(v:exception, '^Vim\((.*)\)\=:', '', "")
+	    echoerr value
+	catch /.*/
+	    Xpath 32768				" X: 0
+	finally
+	    Xpath 65536				" X: 65536
+	    if !caught
+		if !$VIMNOERRTHROW
+		    Xpath 131072		" X: 0
+		else
+		    let value = "Error"
+		    echoerr value
+		endif
+	    endif
+	endtry
+    catch /^Vim(echoerr):/
+	let caught = caught + 1
+	if v:exception !~ value
+	    Xpath 262144			" X: 0
+	endif
+    catch /.*/
+	Xpath 524288				" X: 0
+    finally
+	Xpath 1048576				" X: 1048576
+	if caught != 2
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 2097152			" X: 0
+	    elseif caught
+		Xpath 4194304			" X: 0
+	    endif
+	    return		| " discard error for $VIMNOERRTHROW
+	endif
+    endtry
+endfunction
+
+call G()
+delfunction G
+
+unlet! value caught
+
+if ExtraVim()
+    try
+	let errcaught = 0
+	try
+	    Xpath 8388608			" X: 8388608
+	    let intcaught = 0
+	    "INTERRUPT
+	catch /^Vim:/		" catch interrupt exception
+	    let intcaught = 1
+	    " Trigger Vim error exception with value specified after :echoerr
+	    echoerr substitute(v:exception, '^Vim\((.*)\)\=:', '', "")
+	catch /.*/
+	    Xpath 16777216			" X: 0
+	finally
+	    Xpath 33554432			" X: 33554432
+	    if !intcaught
+		if !$VIMNOINTTHROW
+		    Xpath 67108864		" X: 0
+		else
+		    echoerr "Interrupt"
+		endif
+	    endif
+	endtry
+    catch /^Vim(echoerr):/
+	let errcaught = 1
+	if v:exception !~ "Interrupt"
+	    Xpath 134217728			" X: 0
+	endif
+    finally
+	Xpath 268435456				" X: 268435456
+	if !errcaught && !$VIMNOERRTHROW
+	    Xpath 536870912			" X: 0
+	endif
+    endtry
+endif
+
+Xcheck 311511339
+
+
+"-------------------------------------------------------------------------------
+" Test 61:  Catching interrupt exceptions				    {{{1
+"
+"	    When an interrupt occurs inside a :try/:endtry region, an
+"	    interrupt exception is thrown and can be caught.  Its value is
+"	    "Vim:Interrupt".  If the interrupt occurs after an error or a :throw
+"	    but before a matching :catch is reached, all following :catches of
+"	    that try block are ignored, but the interrupt exception can be
+"	    caught by the next surrounding try conditional.  An interrupt is
+"	    ignored when there is a previous interrupt that has not been caught
+"	    or causes a :finally clause to be executed.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    while 1
+	try
+	    try
+		Xpath 1				" X: 1
+		let caught = 0
+		"INTERRUPT
+		Xpath 2				" X: 0
+	    catch /^Vim:Interrupt$/
+		let caught = 1
+	    finally
+		Xpath 4				" X: 4
+		if caught || $VIMNOINTTHROW
+		    Xpath 8			" X: 8
+		endif
+	    endtry
+	catch /.*/
+	    Xpath 16				" X: 0
+	    Xout v:exception "in" v:throwpoint
+	finally
+	    break		" discard interrupt for $VIMNOINTTHROW
+	endtry
+    endwhile
+
+    while 1
+	try
+	    try
+		let caught = 0
+		try
+		    Xpath 32			" X: 32
+		    asdf
+		    Xpath 64			" X: 0
+		catch /do_not_catch/
+		    Xpath 128			" X: 0
+		catch /.*/	"INTERRUPT - throw interrupt if !$VIMNOERRTHROW
+		    Xpath 256			" X: 0
+		catch /.*/
+		    Xpath 512			" X: 0
+		finally		"INTERRUPT - throw interrupt if $VIMNOERRTHROW
+		    Xpath 1024			" X: 1024
+		endtry
+	    catch /^Vim:Interrupt$/
+		let caught = 1
+	    finally
+		Xpath 2048			" X: 2048
+		if caught || $VIMNOINTTHROW
+		    Xpath 4096			" X: 4096
+		endif
+	    endtry
+	catch /.*/
+	    Xpath 8192				" X: 0
+	    Xout v:exception "in" v:throwpoint
+	finally
+	    break		" discard interrupt for $VIMNOINTTHROW
+	endtry
+    endwhile
+
+    while 1
+	try
+	    try
+		let caught = 0
+		try
+		    Xpath 16384			" X: 16384
+		    throw "x"
+		    Xpath 32768			" X: 0
+		catch /do_not_catch/
+		    Xpath 65536			" X: 0
+		catch /x/	"INTERRUPT
+		    Xpath 131072		" X: 0
+		catch /.*/
+		    Xpath 262144		" X: 0
+		endtry
+	    catch /^Vim:Interrupt$/
+		let caught = 1
+	    finally
+		Xpath 524288			" X: 524288
+		if caught || $VIMNOINTTHROW
+		    Xpath 1048576		" X: 1048576
+		endif
+	    endtry
+	catch /.*/
+	    Xpath 2097152			" X: 0
+	    Xout v:exception "in" v:throwpoint
+	finally
+	    break		" discard interrupt for $VIMNOINTTHROW
+	endtry
+    endwhile
+
+    while 1
+	try
+	    let caught = 0
+	    try
+		Xpath 4194304			" X: 4194304
+		"INTERRUPT
+		Xpath 8388608			" X: 0
+	    catch /do_not_catch/ "INTERRUPT
+		Xpath 16777216			" X: 0
+	    catch /^Vim:Interrupt$/
+		let caught = 1
+	    finally
+		Xpath 33554432			" X: 33554432
+		if caught || $VIMNOINTTHROW
+		    Xpath 67108864		" X: 67108864
+		endif
+	    endtry
+	catch /.*/
+	    Xpath 134217728			" X: 0
+	    Xout v:exception "in" v:throwpoint
+	finally
+	    break		" discard interrupt for $VIMNOINTTHROW
+	endtry
+    endwhile
+
+    Xpath 268435456				" X: 268435456
+
+endif
+
+Xcheck 374889517
+
+
+"-------------------------------------------------------------------------------
+" Test 62:  Catching error exceptions					    {{{1
+"
+"	    An error inside a :try/:endtry region is converted to an exception
+"	    and can be caught.  The error exception has a "Vim(cmdname):" prefix
+"	    where cmdname is the name of the failing command, or a "Vim:" prefix
+"	    if no command name is known.  The "Vim" prefixes cannot be faked.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! MSG(enr, emsg)
+    let english = v:lang == "C" || v:lang =~ '^[Ee]n'
+    if a:enr == ""
+	Xout "TODO: Add message number for:" a:emsg
+	let v:errmsg = ":" . v:errmsg
+    endif
+    let match = 1
+    if v:errmsg !~ '^'.a:enr.':' || (english && v:errmsg !~ a:emsg)
+	let match = 0
+	if v:errmsg == ""
+	    Xout "Message missing."
+	else
+	    let v:errmsg = escape(v:errmsg, '"')
+	    Xout "Unexpected message:" v:errmsg
+	endif
+    endif
+    return match
+endfunction
+
+while 1
+    try
+	try
+	    let caught = 0
+	    unlet novar
+	catch /^Vim(unlet):/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim(unlet):', '', "")
+	finally
+	    Xpath 1				" X: 1
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 2				" X: 0
+	    endif
+	    if !MSG('E108', "No such variable")
+		Xpath 4				" X: 0
+	    endif
+	endtry
+    catch /.*/
+	Xpath 8					" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+while 1
+    try
+	try
+	    let caught = 0
+	    throw novar			" error in :throw
+	catch /^Vim(throw):/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim(throw):', '', "")
+	finally
+	    Xpath 16				" X: 16
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 32			" X: 0
+	    endif
+	    if caught ? !MSG('E121', "Undefined variable")
+			\ : !MSG('E15', "Invalid expression")
+		Xpath 64			" X: 0
+	    endif
+	endtry
+    catch /.*/
+	Xpath 128				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+while 1
+    try
+	try
+	    let caught = 0
+	    throw "Vim:faked"		" error: cannot fake Vim exception
+	catch /^Vim(throw):/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim(throw):', '', "")
+	finally
+	    Xpath 256				" X: 256
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 512			" X: 0
+	    endif
+	    if !MSG('E608', "Cannot :throw exceptions with 'Vim' prefix")
+		Xpath 1024			" X: 0
+	    endif
+	endtry
+    catch /.*/
+	Xpath 2048				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+function! F()
+    while 1
+    " Missing :endwhile
+endfunction
+
+while 1
+    try
+	try
+	    let caught = 0
+	    call F()
+	catch /^Vim(endfunction):/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim(endfunction):', '', "")
+	finally
+	    Xpath 4096				" X: 4096
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 8192			" X: 0
+	    endif
+	    if !MSG('E170', "Missing :endwhile")
+		Xpath 16384			" X: 0
+	    endif
+	endtry
+    catch /.*/
+	Xpath 32768				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+while 1
+    try
+	try
+	    let caught = 0
+	    ExecAsScript F
+	catch /^Vim:/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim:', '', "")
+	finally
+	    Xpath 65536				" X: 65536
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 131072			" X: 0
+	    endif
+	    if !MSG('E170', "Missing :endwhile")
+		Xpath 262144			" X: 0
+	    endif
+	endtry
+    catch /.*/
+	Xpath 524288				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+function! G()
+    call G()
+endfunction
+
+while 1
+    try
+	let mfd_save = &mfd
+	set mfd=3
+	try
+	    let caught = 0
+	    call G()
+	catch /^Vim(call):/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim(call):', '', "")
+	finally
+	    Xpath 1048576			" X: 1048576
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 2097152			" X: 0
+	    endif
+	    if !MSG('E132', "Function call depth is higher than 'maxfuncdepth'")
+		Xpath 4194304			" X: 0
+	    endif
+	endtry
+    catch /.*/
+	Xpath 8388608				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	let &mfd = mfd_save
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+function! H()
+    return H()
+endfunction
+
+while 1
+    try
+	let mfd_save = &mfd
+	set mfd=3
+	try
+	    let caught = 0
+	    call H()
+	catch /^Vim(return):/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim(return):', '', "")
+	finally
+	    Xpath 16777216			" X: 16777216
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 33554432			" X: 0
+	    endif
+	    if !MSG('E132', "Function call depth is higher than 'maxfuncdepth'")
+		Xpath 67108864			" X: 0
+	    endif
+	endtry
+    catch /.*/
+	Xpath 134217728				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	let &mfd = mfd_save
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+unlet! caught mfd_save
+delfunction F
+delfunction G
+delfunction H
+Xpath 268435456					" X: 268435456
+
+Xcheck 286331153
+
+" Leave MSG() for the next test.
+
+
+"-------------------------------------------------------------------------------
+" Test 63:  Suppressing error exceptions by :silent!.			    {{{1
+"
+"	    A :silent! command inside a :try/:endtry region suppresses the
+"	    conversion of errors to an exception and the immediate abortion on
+"	    error.  When the commands executed by the :silent! themselves open
+"	    a new :try/:endtry region, conversion of errors to exception and
+"	    immediate abortion is switched on again - until the next :silent!
+"	    etc.  The :silent! has the effect of setting v:errmsg to the error
+"	    message text (without displaying it) and continuing with the next
+"	    script line.
+"
+"	    When a command triggering autocommands is executed by :silent!
+"	    inside a :try/:endtry, the autocommand execution is not suppressed
+"	    on error.
+"
+"	    This test reuses the function MSG() from the previous test.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+XloopINIT! 1 4
+
+let taken = ""
+
+function! S(n) abort
+    XloopNEXT
+    let g:taken = g:taken . "E" . a:n
+    let v:errmsg = ""
+    exec "asdf" . a:n
+
+    " Check that ":silent!" continues:
+    Xloop 1
+
+    " Check that ":silent!" sets "v:errmsg":
+    if MSG('E492', "Not an editor command")
+	Xloop 2
+    endif
+endfunction
+
+function! Foo()
+    while 1
+	try
+	    try
+		let caught = 0
+		" This is not silent:
+		call S(3)				" X: 0 * 16
+	    catch /^Vim:/
+		let caught = 1
+		let errmsg3 = substitute(v:exception, '^Vim:', '', "")
+		silent! call S(4)			" X: 3 * 64
+	    finally
+		if !caught
+		    let errmsg3 = v:errmsg
+		    " Do call S(4) here if not executed in :catch.
+		    silent! call S(4)
+		endif
+		Xpath 1048576			" X: 1048576
+		if !caught && !$VIMNOERRTHROW
+		    Xpath 2097152		" X: 0
+		endif
+		let v:errmsg = errmsg3
+		if !MSG('E492', "Not an editor command")
+		    Xpath 4194304		" X: 0
+		endif
+		silent! call S(5)			" X: 3 * 256
+		" Break out of try conds that cover ":silent!".  This also
+		" discards the aborting error when $VIMNOERRTHROW is non-zero.
+		break
+	    endtry
+	catch /.*/
+	    Xpath 8388608			" X: 0
+	    Xout v:exception "in" v:throwpoint
+	endtry
+    endwhile
+    " This is a double ":silent!" (see caller).
+    silent! call S(6)					" X: 3 * 1024
+endfunction
+
+function! Bar()
+    try
+	silent! call S(2)				" X: 3 * 4
+							" X: 3 * 4096
+	silent! execute "call Foo() | call S(7)"
+	silent! call S(8)				" X: 3 * 16384
+    endtry	" normal end of try cond that covers ":silent!"
+    " This has a ":silent!" from the caller:
+    call S(9)						" X: 3 * 65536
+endfunction
+
+silent! call S(1)					" X: 3 * 1
+silent! call Bar()
+silent! call S(10)					" X: 3 * 262144
+
+let expected = "E1E2E3E4E5E6E7E8E9E10"
+if taken != expected
+    Xpath 16777216				" X: 0
+    Xout "'taken' is" taken "instead of" expected
+endif
+
+augroup TMP
+    autocmd BufWritePost * Xpath 33554432	" X: 33554432
+augroup END
+
+Xpath 67108864					" X: 67108864
+write /i/m/p/o/s/s/i/b/l/e
+Xpath 134217728					" X: 134217728
+
+autocmd! TMP
+unlet! caught errmsg3 taken expected
+delfunction S
+delfunction Foo
+delfunction Bar
+delfunction MSG
+
+Xcheck 236978127
+
+
+"-------------------------------------------------------------------------------
+" Test 64:  Error exceptions after error, interrupt or :throw		    {{{1
+"
+"	    When an error occurs after an interrupt or a :throw but before
+"	    a matching :catch is reached, all following :catches of that try
+"	    block are ignored, but the error exception can be caught by the next
+"	    surrounding try conditional.  Any previous error exception is
+"	    discarded.  An error is ignored when there is a previous error that
+"	    has not been caught.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    while 1
+	try
+	    try
+		Xpath 1				" X: 1
+		let caught = 0
+		while 1
+"		    if 1
+		    " Missing :endif
+		endwhile	" throw error exception
+	    catch /^Vim(/
+		let caught = 1
+	    finally
+		Xpath 2				" X: 2
+		if caught || $VIMNOERRTHROW
+		    Xpath 4			" X: 4
+		endif
+	    endtry
+	catch /.*/
+	    Xpath 8				" X: 0
+	    Xout v:exception "in" v:throwpoint
+	finally
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+
+    while 1
+	try
+	    try
+		Xpath 16			" X: 16
+		let caught = 0
+		try
+"		    if 1
+		    " Missing :endif
+		catch /.*/	" throw error exception
+		    Xpath 32			" X: 0
+		catch /.*/
+		    Xpath 64			" X: 0
+		endtry
+	    catch /^Vim(/
+		let caught = 1
+	    finally
+		Xpath 128			" X: 128
+		if caught || $VIMNOERRTHROW
+		    Xpath 256			" X: 256
+		endif
+	    endtry
+	catch /.*/
+	    Xpath 512				" X: 0
+	    Xout v:exception "in" v:throwpoint
+	finally
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+
+    while 1
+	try
+	    try
+		let caught = 0
+		try
+		    Xpath 1024			" X: 1024
+		    "INTERRUPT
+		catch /do_not_catch/
+		    Xpath 2048			" X: 0
+"		    if 1
+		    " Missing :endif
+		catch /.*/	" throw error exception
+		    Xpath 4096			" X: 0
+		catch /.*/
+		    Xpath 8192			" X: 0
+		endtry
+	    catch /^Vim(/
+		let caught = 1
+	    finally
+		Xpath 16384			" X: 16384
+		if caught || $VIMNOERRTHROW
+		    Xpath 32768			" X: 32768
+		endif
+	    endtry
+	catch /.*/
+	    Xpath 65536				" X: 0
+	    Xout v:exception "in" v:throwpoint
+	finally
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+
+    while 1
+	try
+	    try
+		let caught = 0
+		try
+		    Xpath 131072		" X: 131072
+		    throw "x"
+		catch /do_not_catch/
+		    Xpath 262144		" X: 0
+"		    if 1
+		    " Missing :endif
+		catch /x/	" throw error exception
+		    Xpath 524288		" X: 0
+		catch /.*/
+		   Xpath 1048576		" X: 0
+		endtry
+	    catch /^Vim(/
+		let caught = 1
+	    finally
+		Xpath 2097152			" X: 2097152
+		if caught || $VIMNOERRTHROW
+		    Xpath 4194304		" X: 4194304
+		endif
+	    endtry
+	catch /.*/
+	    Xpath 8388608			" X: 0
+	    Xout v:exception "in" v:throwpoint
+	finally
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+
+    while 1
+	try
+	    try
+		let caught = 0
+		Xpath 16777216			" X: 16777216
+"		endif		" :endif without :if; throw error exception
+"		if 1
+		" Missing :endif
+	    catch /do_not_catch/ " ignore new error
+		Xpath 33554432			" X: 0
+	    catch /^Vim(endif):/
+		let caught = 1
+	    catch /^Vim(/
+		Xpath 67108864			" X: 0
+	    finally
+		Xpath 134217728			" X: 134217728
+		if caught || $VIMNOERRTHROW
+		    Xpath 268435456		" X: 268435456
+		endif
+	    endtry
+	catch /.*/
+	    Xpath 536870912			" X: 0
+	    Xout v:exception "in" v:throwpoint
+	finally
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+
+    Xpath 1073741824				" X: 1073741824
+
+endif
+
+Xcheck 1499645335
+
+
+"-------------------------------------------------------------------------------
+" Test 65:  Errors in the /pattern/ argument of a :catch		    {{{1
+"
+"	    On an error in the /pattern/ argument of a :catch, the :catch does
+"	    not match.  Any following :catches of the same :try/:endtry don't
+"	    match either.  Finally clauses are executed.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! MSG(enr, emsg)
+    let english = v:lang == "C" || v:lang =~ '^[Ee]n'
+    if a:enr == ""
+	Xout "TODO: Add message number for:" a:emsg
+	let v:errmsg = ":" . v:errmsg
+    endif
+    let match = 1
+    if v:errmsg !~ '^'.a:enr.':' || (english && v:errmsg !~ a:emsg)
+	let match = 0
+	if v:errmsg == ""
+	    Xout "Message missing."
+	else
+	    let v:errmsg = escape(v:errmsg, '"')
+	    Xout "Unexpected message:" v:errmsg
+	endif
+    endif
+    return match
+endfunction
+
+try
+    try
+	Xpath 1					" X: 1
+	throw "oops"
+    catch /^oops$/
+	Xpath 2					" X: 2
+    catch /\)/		" not checked; exception has already been caught
+	Xpath 4					" X: 0
+    endtry
+    Xpath 8					" X: 8
+catch /.*/
+    Xpath 16					" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+function! F()
+    try
+	let caught = 0
+	try
+	    try
+		Xpath 32			" X: 32
+		throw "ab"
+	    catch /abc/	" does not catch
+		Xpath 64			" X: 0
+	    catch /\)/	" error; discards exception
+		Xpath 128			" X: 0
+	    catch /.*/	" not checked
+		Xpath 256			" X: 0
+	    finally
+		Xpath 512			" X: 512
+	    endtry
+	    Xpath 1024				" X: 0
+	catch /^ab$/	" checked, but original exception is discarded
+	    Xpath 2048				" X: 0
+	catch /^Vim(catch):/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim(catch):', '', "")
+	finally
+	    Xpath 4096				" X: 4096
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 8192			" X: 0
+	    endif
+	    if caught ? !MSG('E55', 'Unmatched \\)')
+			\ : !MSG('E475', "Invalid argument")
+		Xpath 16384			" X: 0
+	    endif
+	    if !caught
+		return	| " discard error
+	    endif
+	endtry
+    catch /.*/
+	Xpath 32768				" X: 0
+	Xout v:exception "in" v:throwpoint
+    endtry
+endfunction
+
+call F()
+Xpath 65536					" X: 65536
+
+delfunction MSG
+delfunction F
+unlet! caught
+
+Xcheck 70187
+
+
+"-------------------------------------------------------------------------------
+" Test 66:  Stop range :call on error, interrupt, or :throw		    {{{1
+"
+"	    When a function which is multiply called for a range since it
+"	    doesn't handle the range itself has an error in a command
+"	    dynamically enclosed by :try/:endtry or gets an interrupt or
+"	    executes a :throw, no more calls for the remaining lines in the
+"	    range are made.  On an error in a command not dynamically enclosed
+"	    by :try/:endtry, the function is executed again for the remaining
+"	    lines in the range.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    let file = tempname()
+    exec "edit" file
+
+    insert
+line 1
+line 2
+line 3
+.
+
+    XloopINIT! 1 2
+
+    let taken = ""
+    let expected = "G1EF1E(1)F1E(2)F1E(3)G2EF2E(1)G3IF3I(1)G4TF4T(1)G5AF5A(1)"
+
+    function! F(reason, n) abort
+	let g:taken = g:taken . "F" . a:n .
+	    \ substitute(a:reason, '\(\l\).*', '\u\1', "") .
+	    \ "(" . line(".") . ")"
+
+	if a:reason == "error"
+	    asdf
+	elseif a:reason == "interrupt"
+	    "INTERRUPT
+	    let dummy = 0
+	elseif a:reason == "throw"
+	    throw "xyz"
+	elseif a:reason == "aborting error"
+	    XloopNEXT
+	    if g:taken != g:expected
+		Xloop 1				" X: 0
+		Xout "'taken' is" g:taken "instead of" g:expected
+	    endif
+	    try
+		bwipeout!
+		call delete(file)
+		asdf
+	    endtry
+	endif
+    endfunction
+
+    function! G(reason, n)
+	let g:taken = g:taken . "G" . a:n .
+	    \ substitute(a:reason, '\(\l\).*', '\u\1', "")
+	1,3call F(a:reason, a:n)
+    endfunction
+
+    Xpath 8					" X: 8
+    call G("error", 1)
+    try
+	Xpath 16				" X: 16
+	try
+	    call G("error", 2)
+	    Xpath 32				" X: 0
+	finally
+	    Xpath 64				" X: 64
+	    try
+		call G("interrupt", 3)
+		Xpath 128			" X: 0
+	    finally
+		Xpath 256			" X: 256
+		try
+		    call G("throw", 4)
+		    Xpath 512			" X: 0
+		endtry
+	    endtry
+	endtry
+    catch /xyz/
+	Xpath 1024				" X: 1024
+    catch /.*/
+	Xpath 2048				" X: 0
+	Xout v:exception "in" ExtraVimThrowpoint()
+    endtry
+    Xpath 4096					" X: 4096
+    call G("aborting error", 5)
+    Xpath 8192					" X: 0
+    Xout "'taken' is" taken "instead of" expected
+
+endif
+
+Xcheck 5464
+
+
+"-------------------------------------------------------------------------------
+" Test 67:  :throw accross :call command				    {{{1
+"
+"	    On a call command, an exception might be thrown when evaluating the
+"	    function name, during evaluation of the arguments, or when the
+"	    function is being executed.  The exception can be caught by the
+"	    caller.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! THROW(x, n)
+    if a:n == 1
+	Xpath 1					" X: 1
+    elseif a:n == 2
+	Xpath 2					" X: 2
+    elseif a:n == 3
+	Xpath 4					" X: 4
+    endif
+    throw a:x
+endfunction
+
+function! NAME(x, n)
+    if a:n == 1
+	Xpath 8					" X: 0
+    elseif a:n == 2
+	Xpath 16				" X: 16
+    elseif a:n == 3
+	Xpath 32				" X: 32
+    elseif a:n == 4
+	Xpath 64				" X: 64
+    endif
+    return a:x
+endfunction
+
+function! ARG(x, n)
+    if a:n == 1
+	Xpath 128				" X: 0
+    elseif a:n == 2
+	Xpath 256				" X: 0
+    elseif a:n == 3
+	Xpath 512				" X: 512
+    elseif a:n == 4
+	Xpath 1024				" X: 1024
+    endif
+    return a:x
+endfunction
+
+function! F(x, n)
+    if a:n == 2
+	Xpath 2048				" X: 0
+    elseif a:n == 4
+	Xpath 4096				" X: 4096
+    endif
+endfunction
+
+try
+
+    try
+	Xpath 8192				" X: 8192
+	call {NAME(THROW("name", 1), 1)}(ARG(4711, 1), 1)
+	Xpath 16384				" X: 0
+    catch /^name$/
+	Xpath 32768				" X: 32768
+    catch /.*/
+	Xpath 65536				" X: 0
+	Xout "1:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 131072				" X: 131072
+	call {NAME("F", 2)}(ARG(THROW("arg", 2), 2), 2)
+	Xpath 262144				" X: 0
+    catch /^arg$/
+	Xpath 524288				" X: 524288
+    catch /.*/
+	Xpath 1048576				" X: 0
+	Xout "2:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 2097152				" X: 2097152
+	call {NAME("THROW", 3)}(ARG("call", 3), 3)
+	Xpath 4194304				" X: 0
+    catch /^call$/
+	Xpath 8388608				" X: 8388608
+    catch /^0$/	    " default return value
+	Xpath 16777216				" X: 0
+	Xout "3:" v:throwpoint
+    catch /.*/
+	Xpath 33554432				" X: 0
+	Xout "3:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 67108864				" X: 67108864
+	call {NAME("F", 4)}(ARG(4711, 4), 4)
+	Xpath 134217728				" X: 134217728
+    catch /.*/
+	Xpath 268435456				" X: 0
+	Xout "4:" v:exception "in" v:throwpoint
+    endtry
+
+catch /^0$/	    " default return value
+    Xpath 536870912				" X: 0
+    Xout v:throwpoint
+catch /.*/
+    Xpath 1073741824				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+delfunction F
+
+Xcheck 212514423
+
+" Leave THROW(), NAME(), and ARG() for the next test.
+
+
+"-------------------------------------------------------------------------------
+" Test 68:  :throw accross function calls in expressions		    {{{1
+"
+"	    On a function call within an expression, an exception might be
+"	    thrown when evaluating the function name, during evaluation of the
+"	    arguments, or when the function is being executed.  The exception
+"	    can be caught by the caller.
+"
+"	    This test reuses the functions THROW(), NAME(), and ARG() from the
+"	    previous test.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! F(x, n)
+    if a:n == 2
+	Xpath 2048				" X: 0
+    elseif a:n == 4
+	Xpath 4096				" X: 4096
+    endif
+    return a:x
+endfunction
+
+unlet! var1 var2 var3 var4
+
+try
+
+    try
+	Xpath 8192				" X: 8192
+	let var1 = {NAME(THROW("name", 1), 1)}(ARG(4711, 1), 1)
+	Xpath 16384				" X: 0
+    catch /^name$/
+	Xpath 32768				" X: 32768
+    catch /.*/
+	Xpath 65536				" X: 0
+	Xout "1:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 131072				" X: 131072
+	let var2 = {NAME("F", 2)}(ARG(THROW("arg", 2), 2), 2)
+	Xpath 262144				" X: 0
+    catch /^arg$/
+	Xpath 524288				" X: 524288
+    catch /.*/
+	Xpath 1048576				" X: 0
+	Xout "2:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 2097152				" X: 2097152
+	let var3 = {NAME("THROW", 3)}(ARG("call", 3), 3)
+	Xpath 4194304				" X: 0
+    catch /^call$/
+	Xpath 8388608				" X: 8388608
+    catch /^0$/	    " default return value
+	Xpath 16777216				" X: 0
+	Xout "3:" v:throwpoint
+    catch /.*/
+	Xpath 33554432				" X: 0
+	Xout "3:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 67108864				" X: 67108864
+	let var4 = {NAME("F", 4)}(ARG(4711, 4), 4)
+	Xpath 134217728				" X: 134217728
+    catch /.*/
+	Xpath 268435456				" X: 0
+	Xout "4:" v:exception "in" v:throwpoint
+    endtry
+
+catch /^0$/	    " default return value
+    Xpath 536870912				" X: 0
+    Xout v:throwpoint
+catch /.*/
+    Xpath 1073741824				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+if exists("var1") || exists("var2") || exists("var3") ||
+	    \ !exists("var4") || var4 != 4711
+    " The Xpath command does not accept 2^31 (negative); add explicitly:
+    let Xpath = Xpath + 2147483648		" X: 0
+    if exists("var1")
+	Xout "var1 =" var1
+    endif
+    if exists("var2")
+	Xout "var2 =" var2
+    endif
+    if exists("var3")
+	Xout "var3 =" var3
+    endif
+    if !exists("var4")
+	Xout "var4 unset"
+    elseif var4 != 4711
+	Xout "var4 =" var4
+    endif
+endif
+
+unlet! var1 var2 var3 var4
+delfunction THROW
+delfunction NAME
+delfunction ARG
+delfunction F
+
+Xcheck 212514423
+
+
+"-------------------------------------------------------------------------------
+" Test 69:  :throw accross :if, :elseif, :while				    {{{1
+"
+"	    On an :if, :elseif, or :while command, an exception might be thrown
+"	    during evaluation of the expression to test.  The exception can be
+"	    caught by the script.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+XloopINIT! 1 2
+
+function! THROW(x)
+    XloopNEXT
+    Xloop 1					" X: 1 + 2 + 4
+    throw a:x
+endfunction
+
+try
+
+    try
+	Xpath 8					" X: 8
+	if 4711 == THROW("if") + 111
+	    Xpath 16				" X: 0
+	else
+	    Xpath 32				" X: 0
+	endif
+	Xpath 64				" X: 0
+    catch /^if$/
+	Xpath 128				" X: 128
+    catch /.*/
+	Xpath 256				" X: 0
+	Xout "if:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 512				" X: 512
+	if 4711 == 4 + 7 + 1 + 1
+	    Xpath 1024				" X: 0
+	elseif 4711 == THROW("elseif") + 222
+	    Xpath 2048				" X: 0
+	else
+	    Xpath 4096				" X: 0
+	endif
+	Xpath 8192				" X: 0
+    catch /^elseif$/
+	Xpath 16384				" X: 16384
+    catch /.*/
+	Xpath 32768				" X: 0
+	Xout "elseif:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 65536				" X: 65536
+	while 4711 == THROW("while") + 4711
+	    Xpath 131072			" X: 0
+	    break
+	endwhile
+	Xpath 262144				" X: 0
+    catch /^while$/
+	Xpath 524288				" X: 524288
+    catch /.*/
+	Xpath 1048576				" X: 0
+	Xout "while:" v:exception "in" v:throwpoint
+    endtry
+
+catch /^0$/	    " default return value
+    Xpath 2097152				" X: 0
+    Xout v:throwpoint
+catch /.*/
+    Xout v:exception "in" v:throwpoint
+    Xpath 4194304				" X: 0
+endtry
+
+Xpath 8388608					" X: 8388608
+
+delfunction THROW
+
+Xcheck 8995471
+
+
+"-------------------------------------------------------------------------------
+" Test 70:  :throw accross :return or :throw				    {{{1
+"
+"	    On a :return or :throw command, an exception might be thrown during
+"	    evaluation of the expression to return or throw, respectively.  The
+"	    exception can be caught by the script.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let taken = ""
+
+function! THROW(x, n)
+    let g:taken = g:taken . "T" . a:n
+    throw a:x
+endfunction
+
+function! F(x, y, n)
+    let g:taken = g:taken . "F" . a:n
+    return a:x + THROW(a:y, a:n)
+endfunction
+
+function! G(x, y, n)
+    let g:taken = g:taken . "G" . a:n
+    throw a:x . THROW(a:y, a:n)
+    return a:x
+endfunction
+
+try
+    try
+	Xpath 1					" X: 1
+	call F(4711, "return", 1)
+	Xpath 2					" X: 0
+    catch /^return$/
+	Xpath 4					" X: 4
+    catch /.*/
+	Xpath 8					" X: 0
+	Xout "return:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 16				" X: 16
+	let var = F(4712, "return-var", 2)
+	Xpath 32				" X: 0
+    catch /^return-var$/
+	Xpath 64				" X: 64
+    catch /.*/
+	Xpath 128				" X: 0
+	Xout "return-var:" v:exception "in" v:throwpoint
+    finally
+	unlet! var
+    endtry
+
+    try
+	Xpath 256				" X: 256
+	throw "except1" . THROW("throw1", 3)
+	Xpath 512				" X: 0
+    catch /^except1/
+	Xpath 1024				" X: 0
+    catch /^throw1$/
+	Xpath 2048				" X: 2048
+    catch /.*/
+	Xpath 4096				" X: 0
+	Xout "throw1:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 8192				" X: 8192
+	call G("except2", "throw2", 4)
+	Xpath 16384				" X: 0
+    catch /^except2/
+	Xpath 32768				" X: 0
+    catch /^throw2$/
+	Xpath 65536				" X: 65536
+    catch /.*/
+	Xpath 131072				" X: 0
+	Xout "throw2:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 262144				" X: 262144
+	let var = G("except3", "throw3", 5)
+	Xpath 524288				" X: 0
+    catch /^except3/
+	Xpath 1048576				" X: 0
+    catch /^throw3$/
+	Xpath 2097152				" X: 2097152
+    catch /.*/
+	Xpath 4194304				" X: 0
+	Xout "throw3:" v:exception "in" v:throwpoint
+    finally
+	unlet! var
+    endtry
+
+    let expected = "F1T1F2T2T3G4T4G5T5"
+    if taken != expected
+	Xpath 8388608				" X: 0
+	Xout "'taken' is" taken "instead of" expected
+    endif
+
+catch /^0$/	    " default return value
+    Xpath 16777216				" X: 0
+    Xout v:throwpoint
+catch /.*/
+    Xpath 33554432				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+Xpath 67108864					" X: 67108864
+
+unlet taken expected
+delfunction THROW
+delfunction F
+delfunction G
+
+Xcheck 69544277
+
+
+"-------------------------------------------------------------------------------
+" Test 71:  :throw accross :echo variants and :execute			    {{{1
+"
+"	    On an :echo, :echon, :echomsg, :echoerr, or :execute command, an
+"	    exception might be thrown during evaluation of the arguments to
+"	    be displayed or executed as a command, respectively.  Any following
+"	    arguments are not evaluated, then.  The exception can be caught by
+"	    the script.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let taken = ""
+
+function! THROW(x, n)
+    let g:taken = g:taken . "T" . a:n
+    throw a:x
+endfunction
+
+function! F(n)
+    let g:taken = g:taken . "F" . a:n
+    return "F" . a:n
+endfunction
+
+try
+    try
+	Xpath 1					" X: 1
+	echo "echo" . THROW("echo-except", 1) F(1)
+	Xpath 2					" X: 0
+    catch /^echo-except$/
+	Xpath 4					" X: 4
+    catch /.*/
+	Xpath 8					" X: 0
+	Xout "echo:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 16				" X: 16
+	echon "echon" . THROW("echon-except", 2) F(2)
+	Xpath 32				" X: 0
+    catch /^echon-except$/
+	Xpath 64				" X: 64
+    catch /.*/
+	Xpath 128				" X: 0
+	Xout "echon:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 256				" X: 256
+	echomsg "echomsg" . THROW("echomsg-except", 3) F(3)
+	Xpath 512				" X: 0
+    catch /^echomsg-except$/
+	Xpath 1024				" X: 1024
+    catch /.*/
+	Xpath 2048				" X: 0
+	Xout "echomsg:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 4096				" X: 4096
+	echoerr "echoerr" . THROW("echoerr-except", 4) F(4)
+	Xpath 8192				" X: 0
+    catch /^echoerr-except$/
+	Xpath 16384				" X: 16384
+    catch /Vim/
+	Xpath 32768				" X: 0
+    catch /echoerr/
+	Xpath 65536				" X: 0
+    catch /.*/
+	Xpath 131072				" X: 0
+	Xout "echoerr:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 262144				" X: 262144
+	execute "echo 'execute" . THROW("execute-except", 5) F(5) "'"
+	Xpath 524288				" X: 0
+    catch /^execute-except$/
+	Xpath 1048576				" X: 1048576
+    catch /.*/
+	Xpath 2097152				" X: 0
+	Xout "execute:" v:exception "in" v:throwpoint
+    endtry
+
+    let expected = "T1T2T3T4T5"
+    if taken != expected
+	Xpath 4194304				" X: 0
+	Xout "'taken' is" taken "instead of" expected
+    endif
+
+catch /^0$/	    " default return value
+    Xpath 8388608				" X: 0
+    Xout v:throwpoint
+catch /.*/
+    Xpath 16777216				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+Xpath 33554432					" X: 33554432
+
+unlet taken expected
+delfunction THROW
+delfunction F
+
+Xcheck 34886997
+
+
+"-------------------------------------------------------------------------------
+" Test 72:  :throw accross :let or :unlet				    {{{1
+"
+"	    On a :let command, an exception might be thrown during evaluation
+"	    of the expression to assign.  On an :let or :unlet command, the
+"	    evaluation of the name of the variable to be assigned or list or
+"	    deleted, respectively, may throw an exception.  Any following
+"	    arguments are not evaluated, then.  The exception can be caught by
+"	    the script.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let throwcount = 0
+
+function! THROW(x)
+    let g:throwcount = g:throwcount + 1
+    throw a:x
+endfunction
+
+try
+    try
+	let $VAR = "old_value"
+	Xpath 1					" X: 1
+	let $VAR = "let(" . THROW("var") . ")"
+	Xpath 2					" X: 0
+    catch /^var$/
+	Xpath 4					" X: 4
+    finally
+	if $VAR != "old_value"
+	    Xpath 8				" X: 0
+	endif
+    endtry
+
+    try
+	let @a = "old_value"
+	Xpath 16				" X: 16
+	let @a = "let(" . THROW("reg") . ")"
+	Xpath 32				" X: 0
+    catch /^reg$/
+	try
+	    Xpath 64				" X: 64
+	    let @A = "let(" . THROW("REG") . ")"
+	    Xpath 128				" X: 0
+	catch /^REG$/
+	    Xpath 256				" X: 256
+	endtry
+    finally
+	if @a != "old_value"
+	    Xpath 512				" X: 0
+	endif
+	if @A != "old_value"
+	    Xpath 1024				" X: 0
+	endif
+    endtry
+
+    try
+	let saved_gpath = &g:path
+	let saved_lpath = &l:path
+	Xpath 2048				" X: 2048
+	let &path = "let(" . THROW("opt") . ")"
+	Xpath 4096				" X: 0
+    catch /^opt$/
+	try
+	    Xpath 8192				" X: 8192
+	    let &g:path = "let(" . THROW("gopt") . ")"
+	    Xpath 16384				" X: 0
+	catch /^gopt$/
+	    try
+		Xpath 32768			" X: 32768
+		let &l:path = "let(" . THROW("lopt") . ")"
+		Xpath 65536			" X: 0
+	    catch /^lopt$/
+		Xpath 131072			" X: 131072
+	    endtry
+	endtry
+    finally
+	if &g:path != saved_gpath || &l:path != saved_lpath
+	    Xpath 262144			" X: 0
+	endif
+	let &g:path = saved_gpath
+	let &l:path = saved_lpath
+    endtry
+
+    unlet! var1 var2 var3
+
+    try
+	Xpath 524288				" X: 524288
+	let var1 = "let(" . THROW("var1") . ")"
+	Xpath 1048576				" X: 0
+    catch /^var1$/
+	Xpath 2097152				" X: 2097152
+    finally
+	if exists("var1")
+	    Xpath 4194304			" X: 0
+	endif
+    endtry
+
+    try
+	let var2 = "old_value"
+	Xpath 8388608				" X: 8388608
+	let var2 = "let(" . THROW("var2"). ")"
+	Xpath 16777216				" X: 0
+    catch /^var2$/
+	Xpath 33554432				" X: 33554432
+    finally
+	if var2 != "old_value"
+	    Xpath 67108864			" X: 0
+	endif
+    endtry
+
+    try
+	Xpath 134217728				" X: 134217728
+	let var{THROW("var3")} = 4711
+	Xpath 268435456				" X: 0
+    catch /^var3$/
+	Xpath 536870912				" X: 536870912
+    endtry
+
+    let addpath = ""
+
+    function ADDPATH(p)
+	let g:addpath = g:addpath . a:p
+    endfunction
+
+    try
+	call ADDPATH("T1")
+	let var{THROW("var4")} var{ADDPATH("T2")} | call ADDPATH("T3")
+	call ADDPATH("T4")
+    catch /^var4$/
+	call ADDPATH("T5")
+    endtry
+
+    try
+	call ADDPATH("T6")
+	unlet var{THROW("var5")} var{ADDPATH("T7")} | call ADDPATH("T8")
+	call ADDPATH("T9")
+    catch /^var5$/
+	call ADDPATH("T10")
+    endtry
+
+    if addpath != "T1T5T6T10" || throwcount != 11
+	throw "addpath: " . addpath . ", throwcount: " . throwcount
+    endif
+
+    Xpath 1073741824				" X: 1073741824
+
+catch /.*/
+    " The Xpath command does not accept 2^31 (negative); add explicitly:
+    let Xpath = Xpath + 2147483648		" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+unlet! var1 var2 var3 addpath throwcount
+delfunction THROW
+
+Xcheck 1789569365
+
+
+"-------------------------------------------------------------------------------
+" Test 73:  :throw accross :function, :delfunction			    {{{1
+"
+"	    The :function and :delfunction commands may cause an expression
+"	    specified in braces to be evaluated.  During evaluation, an
+"	    exception might be thrown.  The exception can be caught by the
+"	    script.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let taken = ""
+
+function! THROW(x, n)
+    let g:taken = g:taken . "T" . a:n
+    throw a:x
+endfunction
+
+function! EXPR(x, n)
+    let g:taken = g:taken . "E" . a:n
+    if a:n % 2 == 0
+	call THROW(a:x, a:n)
+    endif
+    return 2 - a:n % 2
+endfunction
+
+try
+    try
+	" Define function.
+	Xpath 1					" X: 1
+	function! F0()
+	endfunction
+	Xpath 2					" X: 2
+	function! F{EXPR("function-def-ok", 1)}()
+	endfunction
+	Xpath 4					" X: 4
+	function! F{EXPR("function-def", 2)}()
+	endfunction
+	Xpath 8					" X: 0
+    catch /^function-def-ok$/
+	Xpath 16				" X: 0
+    catch /^function-def$/
+	Xpath 32				" X: 32
+    catch /.*/
+	Xpath 64				" X: 0
+	Xout "def:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	" List function.
+	Xpath 128				" X: 128
+	function F0
+	Xpath 256				" X: 256
+	function F{EXPR("function-lst-ok", 3)}
+	Xpath 512				" X: 512
+	function F{EXPR("function-lst", 4)}
+	Xpath 1024				" X: 0
+    catch /^function-lst-ok$/
+	Xpath 2048				" X: 0
+    catch /^function-lst$/
+	Xpath 4096				" X: 4096
+    catch /.*/
+	Xpath 8192				" X: 0
+	Xout "lst:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	" Delete function
+	Xpath 16384				" X: 16384
+	delfunction F0
+	Xpath 32768				" X: 32768
+	delfunction F{EXPR("function-del-ok", 5)}
+	Xpath 65536				" X: 65536
+	delfunction F{EXPR("function-del", 6)}
+	Xpath 131072				" X: 0
+    catch /^function-del-ok$/
+	Xpath 262144				" X: 0
+    catch /^function-del$/
+	Xpath 524288				" X: 524288
+    catch /.*/
+	Xpath 1048576				" X: 0
+	Xout "del:" v:exception "in" v:throwpoint
+    endtry
+
+    let expected = "E1E2T2E3E4T4E5E6T6"
+    if taken != expected
+	Xpath 2097152				" X: 0
+	Xout "'taken' is" taken "instead of" expected
+    endif
+
+catch /.*/
+    Xpath 4194304				" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+Xpath 8388608					" X: 8388608
+
+unlet taken expected
+delfunction THROW
+delfunction EXPR
+
+Xcheck 9032615
+
+
+"-------------------------------------------------------------------------------
+" Test 74:  :throw accross builtin functions and commands		    {{{1
+"
+"	    Some functions like exists(), searchpair() take expression
+"	    arguments, other functions or commands like substitute() or
+"	    :substitute cause an expression (specified in the regular
+"	    expression) to be evaluated.  During evaluation an exception
+"	    might be thrown.  The exception can be caught by the script.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+let taken = ""
+
+function! THROW(x, n)
+    let g:taken = g:taken . "T" . a:n
+    throw a:x
+endfunction
+
+function! EXPR(x, n)
+    let g:taken = g:taken . "E" . a:n
+    call THROW(a:x . a:n, a:n)
+    return "EXPR"
+endfunction
+
+function! SKIP(x, n)
+    let g:taken = g:taken . "S" . a:n . "(" . line(".")
+    let theline = getline(".")
+    if theline =~ "skip"
+	let g:taken = g:taken . "s)"
+	return 1
+    elseif theline =~ "throw"
+	let g:taken = g:taken . "t)"
+	call THROW(a:x . a:n, a:n)
+    else
+	let g:taken = g:taken . ")"
+	return 0
+    endif
+endfunction
+
+function! SUBST(x, n)
+    let g:taken = g:taken . "U" . a:n . "(" . line(".")
+    let theline = getline(".")
+    if theline =~ "not"	    " SUBST() should not be called for this line
+	let g:taken = g:taken . "n)"
+	call THROW(a:x . a:n, a:n)
+    elseif theline =~ "throw"
+	let g:taken = g:taken . "t)"
+	call THROW(a:x . a:n, a:n)
+    else
+	let g:taken = g:taken . ")"
+	return "replaced"
+    endif
+endfunction
+
+try
+    try
+	Xpath 1					" X: 1
+	let result = exists('*{EXPR("exists", 1)}')
+	Xpath 2					" X: 0
+    catch /^exists1$/
+	Xpath 4					" X: 4
+	try
+	    let result = exists('{EXPR("exists", 2)}')
+	    Xpath 8				" X: 0
+	catch /^exists2$/
+	    Xpath 16				" X: 16
+	catch /.*/
+	    Xpath 32				" X: 0
+	    Xout "exists2:" v:exception "in" v:throwpoint
+	endtry
+    catch /.*/
+	Xpath 64				" X: 0
+	Xout "exists1:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	let file = tempname()
+	exec "edit" file
+	insert
+begin
+    xx
+middle 3
+    xx
+middle 5 skip
+    xx
+middle 7 throw
+    xx
+end
+.
+	normal! gg
+	Xpath 128				" X: 128
+	let result =
+	    \ searchpair("begin", "middle", "end", '', 'SKIP("searchpair", 3)')
+	Xpath 256				" X: 256
+	let result =
+	    \ searchpair("begin", "middle", "end", '', 'SKIP("searchpair", 4)')
+	Xpath 512				" X: 0
+	let result =
+	    \ searchpair("begin", "middle", "end", '', 'SKIP("searchpair", 5)')
+	Xpath 1024				" X: 0
+    catch /^searchpair[35]$/
+	Xpath 2048				" X: 0
+    catch /^searchpair4$/
+	Xpath 4096				" X: 4096
+    catch /.*/
+	Xpath 8192				" X: 0
+	Xout "searchpair:" v:exception "in" v:throwpoint
+    finally
+	bwipeout!
+	call delete(file)
+    endtry
+
+    try
+	let file = tempname()
+	exec "edit" file
+	insert
+subst 1
+subst 2
+not
+subst 4
+subst throw
+subst 6
+.
+	normal! gg
+	Xpath 16384				" X: 16384
+	1,2substitute/subst/\=SUBST("substitute", 6)/
+	try
+	    Xpath 32768				" X: 32768
+	    try
+		let v:errmsg = ""
+		3substitute/subst/\=SUBST("substitute", 7)/
+	    finally
+		if v:errmsg != ""
+		    " If exceptions are not thrown on errors, fake the error
+		    " exception in order to get the same execution path.
+		    throw "faked Vim(substitute)"
+		endif
+	    endtry
+	catch /Vim(substitute)/	    " Pattern not found ('e' flag missing)
+	    Xpath 65536				" X: 65536
+	    3substitute/subst/\=SUBST("substitute", 8)/e
+	    Xpath 131072			" X: 131072
+	endtry
+	Xpath 262144				" X: 262144
+	4,6substitute/subst/\=SUBST("substitute", 9)/
+	Xpath 524288				" X: 0
+    catch /^substitute[678]/
+	Xpath 1048576				" X: 0
+    catch /^substitute9/
+	Xpath 2097152				" X: 2097152
+    finally
+	bwipeout!
+	call delete(file)
+    endtry
+
+    try
+	Xpath 4194304				" X: 4194304
+	let var = substitute("sub", "sub", '\=THROW("substitute()y", 10)', '')
+	Xpath 8388608				" X: 0
+    catch /substitute()y/
+	Xpath 16777216				" X: 16777216
+    catch /.*/
+	Xpath 33554432				" X: 0
+	Xout "substitute()y:" v:exception "in" v:throwpoint
+    endtry
+
+    try
+	Xpath 67108864				" X: 67108864
+	let var = substitute("not", "sub", '\=THROW("substitute()n", 11)', '')
+	Xpath 134217728				" X: 134217728
+    catch /substitute()n/
+	Xpath 268435456				" X: 0
+    catch /.*/
+	Xpath 536870912				" X: 0
+	Xout "substitute()n:" v:exception "in" v:throwpoint
+    endtry
+
+    let expected = "E1T1E2T2S3(3)S4(5s)S4(7t)T4U6(1)U6(2)U9(4)U9(5t)T9T10"
+    if taken != expected
+	Xpath 1073741824			" X: 0
+	Xout "'taken' is" taken "instead of" expected
+    endif
+
+catch /.*/
+    " The Xpath command does not accept 2^31 (negative); add explicitly:
+    let Xpath = Xpath + 2147483648		" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+unlet result var taken expected
+delfunction THROW
+delfunction EXPR
+delfunction SKIP
+delfunction SUBST
+
+Xcheck 224907669
+
+
+"-------------------------------------------------------------------------------
+" Test 75:  Errors in builtin functions.				    {{{1
+"
+"	    On an error in a builtin function called inside a :try/:endtry
+"	    region, the evaluation of the expression calling that function and
+"	    the command containing that expression are abandoned.  The error can
+"	    be caught as an exception.
+"
+"	    A simple :call of the builtin function is a trivial case.  If the
+"	    builtin function is called in the argument list of another function,
+"	    no further arguments are evaluated, and the other function is not
+"	    executed.  If the builtin function is called from the argument of
+"	    a :return command, the :return command is not executed.  If the
+"	    builtin function is called from the argument of a :throw command,
+"	    the :throw command is not executed.  The evaluation of the
+"	    expression calling the builtin function is abandoned.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! F1(arg1)
+    Xpath 1					" X: 0
+endfunction
+
+function! F2(arg1, arg2)
+    Xpath 2					" X: 0
+endfunction
+
+function! G()
+    Xpath 4					" X: 0
+endfunction
+
+function! H()
+    Xpath 8					" X: 0
+endfunction
+
+function! R()
+    while 1
+	try
+	    let caught = 0
+	    let v:errmsg = ""
+	    Xpath 16				" X: 16
+	    return append(1, "s")
+	catch /E21/
+	    let caught = 1
+	catch /.*/
+	    Xpath 32				" X: 0
+	finally
+	    Xpath 64				" X: 64
+	    if caught || $VIMNOERRTHROW && v:errmsg =~ 'E21'
+		Xpath 128			" X: 128
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+    Xpath 256					" X: 256
+endfunction
+
+try
+    set noma	" let append() fail with "E21"
+
+    while 1
+	try
+	    let caught = 0
+	    let v:errmsg = ""
+	    Xpath 512				" X: 512
+	    call append(1, "s")
+	catch /E21/
+	    let caught = 1
+	catch /.*/
+	    Xpath 1024				" X: 0
+	finally
+	    Xpath 2048				" X: 2048
+	    if caught || $VIMNOERRTHROW && v:errmsg =~ 'E21'
+		Xpath 4096			" X: 4096
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+
+    while 1
+	try
+	    let caught = 0
+	    let v:errmsg = ""
+	    Xpath 8192				" X: 8192
+	    call F1('x' . append(1, "s"))
+	catch /E21/
+	    let caught = 1
+	catch /.*/
+	    Xpath 16384				" X: 0
+	finally
+	    Xpath 32768				" X: 32768
+	    if caught || $VIMNOERRTHROW && v:errmsg =~ 'E21'
+		Xpath 65536			" X: 65536
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+
+    while 1
+	try
+	    let caught = 0
+	    let v:errmsg = ""
+	    Xpath 131072			" X: 131072
+	    call F2('x' . append(1, "s"), G())
+	catch /E21/
+	    let caught = 1
+	catch /.*/
+	    Xpath 262144			" X: 0
+	finally
+	    Xpath 524288			" X: 524288
+	    if caught || $VIMNOERRTHROW && v:errmsg =~ 'E21'
+		Xpath 1048576			" X: 1048576
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+
+    call R()
+
+    while 1
+	try
+	    let caught = 0
+	    let v:errmsg = ""
+	    Xpath 2097152			" X: 2097152
+	    throw "T" . append(1, "s")
+	catch /E21/
+	    let caught = 1
+	catch /^T.*/
+	    Xpath 4194304			" X: 0
+	catch /.*/
+	    Xpath 8388608			" X: 0
+	finally
+	    Xpath 16777216			" X: 16777216
+	    if caught || $VIMNOERRTHROW && v:errmsg =~ 'E21'
+		Xpath 33554432			" X: 33554432
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+
+    while 1
+	try
+	    let caught = 0
+	    let v:errmsg = ""
+	    Xpath 67108864			" X: 67108864
+	    let x = "a"
+	    let x = x . "b" . append(1, "s") . H()
+	catch /E21/
+	    let caught = 1
+	catch /.*/
+	    Xpath 134217728			" X: 0
+	finally
+	    Xpath 268435456			" X: 268435456
+	    if caught || $VIMNOERRTHROW && v:errmsg =~ 'E21'
+		Xpath 536870912			" X: 536870912
+	    endif
+	    if x == "a"
+		Xpath 1073741824		" X: 1073741824
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry
+    endwhile
+catch /.*/
+    " The Xpath command does not accept 2^31 (negative); add explicitly:
+    let Xpath = Xpath + 2147483648		" X: 0
+    Xout v:exception "in" v:throwpoint
+finally
+    set ma&
+endtry
+
+unlet! caught x
+delfunction F1
+delfunction F2
+delfunction G
+delfunction H
+delfunction R
+
+Xcheck 2000403408
+
+
+"-------------------------------------------------------------------------------
+" Test 76:  Errors, interupts, :throw during expression evaluation	    {{{1
+"
+"	    When a function call made during expression evaluation is aborted
+"	    due to an error inside a :try/:endtry region or due to an interrupt
+"	    or a :throw, the expression evaluation is aborted as well.	No
+"	    message is displayed for the cancelled expression evaluation.  On an
+"	    error not inside :try/:endtry, the expression evaluation continues.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    let taken = ""
+
+    function! ERR(n)
+	let g:taken = g:taken . "E" . a:n
+	asdf
+    endfunction
+
+    function! ERRabort(n) abort
+	let g:taken = g:taken . "A" . a:n
+	asdf
+    endfunction	" returns -1
+
+    function! INT(n)
+	let g:taken = g:taken . "I" . a:n
+	"INTERRUPT9
+	let dummy = 0
+    endfunction
+
+    function! THR(n)
+	let g:taken = g:taken . "T" . a:n
+	throw "should not be caught"
+    endfunction
+
+    function! CONT(n)
+	let g:taken = g:taken . "C" . a:n
+    endfunction
+
+    function! MSG(n)
+	let g:taken = g:taken . "M" . a:n
+	if (a:n >= 10 && a:n <= 27) ? v:errmsg != "" : v:errmsg !~ "asdf"
+	    let g:taken = g:taken . "x"
+	endif
+	let v:errmsg = ""
+    endfunction
+
+    let v:errmsg = ""
+
+    try
+	let t = 1
+	XloopINIT 1 2
+	while t <= 9
+	    Xloop 1				" X: 511
+	    try
+		if t == 1
+		    let v{ERR(t) + CONT(t)} = 0
+		elseif t == 2
+		    let v{ERR(t) + CONT(t)}
+		elseif t == 3
+		    let var = exists('v{ERR(t) + CONT(t)}')
+		elseif t == 4
+		    unlet v{ERR(t) + CONT(t)}
+		elseif t == 5
+		    function F{ERR(t) + CONT(t)}()
+		    endfunction
+		elseif t == 6
+		    function F{ERR(t) + CONT(t)}
+		elseif t == 7
+		    let var = exists('*F{ERR(t) + CONT(t)}')
+		elseif t == 8
+		    delfunction F{ERR(t) + CONT(t)}
+		elseif t == 9
+		    let var = ERR(t) + CONT(t)
+		endif
+	    catch /asdf/
+		" v:errmsg is not set when the error message is converted to an
+		" exception.  Set it to the original error message.
+		let v:errmsg = substitute(v:exception, '^Vim:', '', "")
+	    catch /^Vim\((\a\+)\)\=:/
+		" An error exception has been thrown after the original error.
+		let v:errmsg = ""
+	    finally
+		call MSG(t)
+		let t = t + 1
+		XloopNEXT
+		continue	" discard an aborting error
+	    endtry
+	endwhile
+    catch /.*/
+	Xpath 512				" X: 0
+	Xout v:exception "in" ExtraVimThrowpoint()
+    endtry
+
+    try
+	let t = 10
+	XloopINIT 1024 2
+	while t <= 18
+	    Xloop 1				" X: 1024 * 511
+	    try
+		if t == 10
+		    let v{INT(t) + CONT(t)} = 0
+		elseif t == 11
+		    let v{INT(t) + CONT(t)}
+		elseif t == 12
+		    let var = exists('v{INT(t) + CONT(t)}')
+		elseif t == 13
+		    unlet v{INT(t) + CONT(t)}
+		elseif t == 14
+		    function F{INT(t) + CONT(t)}()
+		    endfunction
+		elseif t == 15
+		    function F{INT(t) + CONT(t)}
+		elseif t == 16
+		    let var = exists('*F{INT(t) + CONT(t)}')
+		elseif t == 17
+		    delfunction F{INT(t) + CONT(t)}
+		elseif t == 18
+		    let var = INT(t) + CONT(t)
+		endif
+	    catch /^Vim\((\a\+)\)\=:\(Interrupt\)\@!/
+		" An error exception has been triggered after the interrupt.
+		let v:errmsg = substitute(v:exception,
+		    \ '^Vim\((\a\+)\)\=:', '', "")
+	    finally
+		call MSG(t)
+		let t = t + 1
+		XloopNEXT
+		continue	" discard interrupt
+	    endtry
+	endwhile
+    catch /.*/
+	Xpath 524288				" X: 0
+	Xout v:exception "in" ExtraVimThrowpoint()
+    endtry
+
+    try
+	let t = 19
+	XloopINIT 1048576 2
+	while t <= 27
+	    Xloop 1				" X: 1048576 * 511
+	    try
+		if t == 19
+		    let v{THR(t) + CONT(t)} = 0
+		elseif t == 20
+		    let v{THR(t) + CONT(t)}
+		elseif t == 21
+		    let var = exists('v{THR(t) + CONT(t)}')
+		elseif t == 22
+		    unlet v{THR(t) + CONT(t)}
+		elseif t == 23
+		    function F{THR(t) + CONT(t)}()
+		    endfunction
+		elseif t == 24
+		    function F{THR(t) + CONT(t)}
+		elseif t == 25
+		    let var = exists('*F{THR(t) + CONT(t)}')
+		elseif t == 26
+		    delfunction F{THR(t) + CONT(t)}
+		elseif t == 27
+		    let var = THR(t) + CONT(t)
+		endif
+	    catch /^Vim\((\a\+)\)\=:/
+		" An error exception has been triggered after the :throw.
+		let v:errmsg = substitute(v:exception,
+		    \ '^Vim\((\a\+)\)\=:', '', "")
+	    finally
+		call MSG(t)
+		let t = t + 1
+		XloopNEXT
+		continue	" discard exception
+	    endtry
+	endwhile
+    catch /.*/
+	Xpath 536870912				" X: 0
+	Xout v:exception "in" ExtraVimThrowpoint()
+    endtry
+
+    let v{ERR(28) + CONT(28)} = 0
+    call MSG(28)
+    let v{ERR(29) + CONT(29)}
+    call MSG(29)
+    let var = exists('v{ERR(30) + CONT(30)}')
+    call MSG(30)
+    unlet v{ERR(31) + CONT(31)}
+    call MSG(31)
+    function F{ERR(32) + CONT(32)}()
+    endfunction
+    call MSG(32)
+    function F{ERR(33) + CONT(33)}
+    call MSG(33)
+    let var = exists('*F{ERR(34) + CONT(34)}')
+    call MSG(34)
+    delfunction F{ERR(35) + CONT(35)}
+    call MSG(35)
+    let var = ERR(36) + CONT(36)
+    call MSG(36)
+
+    let v{ERRabort(37) + CONT(37)} = 0
+    call MSG(37)
+    let v{ERRabort(38) + CONT(38)}
+    call MSG(38)
+    let var = exists('v{ERRabort(39) + CONT(39)}')
+    call MSG(39)
+    unlet v{ERRabort(40) + CONT(40)}
+    call MSG(40)
+    function F{ERRabort(41) + CONT(41)}()
+    endfunction
+    call MSG(41)
+    function F{ERRabort(42) + CONT(42)}
+    call MSG(42)
+    let var = exists('*F{ERRabort(43) + CONT(43)}')
+    call MSG(43)
+    delfunction F{ERRabort(44) + CONT(44)}
+    call MSG(44)
+    let var = ERRabort(45) + CONT(45)
+    call MSG(45)
+
+    Xpath 1073741824				" X: 1073741824
+
+    let expected = ""
+	\ . "E1M1E2M2E3M3E4M4E5M5E6M6E7M7E8M8E9M9"
+	\ . "I10M10I11M11I12M12I13M13I14M14I15M15I16M16I17M17I18M18"
+	\ . "T19M19T20M20T21M21T22M22T23M23T24M24T25M25T26M26T27M27"
+	\ . "E28C28M28E29C29M29E30C30M30E31C31M31E32C32M32E33C33M33"
+	\ . "E34C34M34E35C35M35E36C36M36"
+	\ . "A37C37M37A38C38M38A39C39M39A40C40M40A41C41M41A42C42M42"
+	\ . "A43C43M43A44C44M44A45C45M45"
+
+    if taken != expected
+	" The Xpath command does not accept 2^31 (negative); display explicitly:
+	exec "!echo 2147483648 >>" . g:ExtraVimResult
+						" X: 0
+	Xout "'taken' is" taken "instead of" expected
+	if substitute(taken,
+	\ '\(.*\)E3C3M3x\(.*\)E30C30M30x\(.*\)A39C39M39x\(.*\)',
+	\ '\1E3M3\2E30C30M30\3A39C39M39\4',
+	\ "") == expected
+	    Xout "Is ++emsg_skip for var with expr_start non-NULL"
+		\ "in f_exists ok?"
+	endif
+    endif
+
+    unlet! var taken expected
+    call delete(WA_t5)
+    call delete(WA_t14)
+    call delete(WA_t23)
+    unlet! WA_t5 WA_t14 WA_t23
+    delfunction WA_t5
+    delfunction WA_t14
+    delfunction WA_t23
+
+endif
+
+Xcheck 1610087935
+
+
+"-------------------------------------------------------------------------------
+" Test 77:  Errors, interupts, :throw in name{brace-expression}		    {{{1
+"
+"	    When a function call made during evaluation of an expression in
+"	    braces as part of a function name after ":function" is aborted due
+"	    to an error inside a :try/:endtry region or due to an interrupt or
+"	    a :throw, the expression evaluation is aborted as well, and the
+"	    function definition is ignored, skipping all commands to the
+"	    ":endfunction".  On an error not inside :try/:endtry, the expression
+"	    evaluation continues and the function gets defined, and can be
+"	    called and deleted.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+XloopINIT 1 4
+
+function! ERR() abort
+    Xloop 1					" X: 1 + 4 + 16 + 64
+    asdf
+endfunction		" returns -1
+
+function! OK()
+    Xloop 2					" X: 2 * (1 + 4 + 16)
+    let v:errmsg = ""
+    return 0
+endfunction
+
+let v:errmsg = ""
+
+Xpath 4096					" X: 4096
+function! F{1 + ERR() + OK()}(arg)
+    " F0 should be defined.
+    if exists("a:arg") && a:arg == "calling"
+	Xpath 8192				" X: 8192
+    else
+	Xpath 16384				" X: 0
+    endif
+endfunction
+if v:errmsg != ""
+    Xpath 32768					" X: 0
+endif
+XloopNEXT
+
+Xpath 65536					" X: 65536
+call F{1 + ERR() + OK()}("calling")
+if v:errmsg != ""
+    Xpath 131072				" X: 0
+endif
+XloopNEXT
+
+Xpath 262144					" X: 262144
+delfunction F{1 + ERR() + OK()}
+if v:errmsg != ""
+    Xpath 524288				" X: 0
+endif
+XloopNEXT
+
+try
+    while 1
+	let caught = 0
+	try
+	    Xpath 1048576			" X: 1048576
+	    function! G{1 + ERR() + OK()}(arg)
+		" G0 should not be defined, and the function body should be
+		" skipped.
+		if exists("a:arg") && a:arg == "calling"
+		    Xpath 2097152		" X: 0
+		else
+		    Xpath 4194304		" X: 0
+		endif
+		" Use an unmatched ":finally" to check whether the body is
+		" skipped when an error occurs in ERR().  This works whether or
+		" not the exception is converted to an exception.
+		finally
+		    Xpath 8388608		" X: 0
+		    Xout "Body of G{1 + ERR() + OK()}() not skipped"
+		    " Discard the aborting error or exception, and break the
+		    " while loop.
+		    break
+		" End the try conditional and start a new one to avoid
+		" ":catch after :finally" errors.
+		endtry
+		try
+		Xpath 16777216			" X: 0
+	    endfunction
+
+	    " When the function was not defined, this won't be reached - whether
+	    " the body was skipped or not.  When the function was defined, it
+	    " can be called and deleted here.
+	    Xpath 33554432			" X: 0
+	    Xout "G0() has been defined"
+	    XloopNEXT
+	    try
+		call G{1 + ERR() + OK()}("calling")
+	    catch /.*/
+		Xpath 67108864			" X: 0
+	    endtry
+	    Xpath 134217728			" X: 0
+	    XloopNEXT
+	    try
+		delfunction G{1 + ERR() + OK()}
+	    catch /.*/
+		Xpath 268435456			" X: 0
+	    endtry
+	catch /asdf/
+	    " Jumped to when the function is not defined and the body is
+	    " skipped.
+	    let caught = 1
+	catch /.*/
+	    Xpath 536870912			" X: 0
+	finally
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 1073741824		" X: 0
+	    endif
+	    break		" discard error for $VIMNOERRTHROW
+	endtry			" jumped to when the body is not skipped
+    endwhile
+catch /.*/
+    " The Xpath command does not accept 2^31 (negative); add explicitly:
+    let Xpath = Xpath + 2147483648		" X: 0
+    Xout "Body of G{1 + ERR() + OK()}() not skipped, exception caught"
+    Xout v:exception "in" v:throwpoint
+endtry
+
+Xcheck 1388671
+
+
+"-------------------------------------------------------------------------------
+" Test 78:  Messages on parsing errors in expression evaluation		    {{{1
+"
+"	    When an expression evaluation detects a parsing error, an error
+"	    message is given and converted to an exception, and the expression
+"	    evaluation is aborted.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    let taken = ""
+
+    function! F(n)
+	let g:taken = g:taken . "F" . a:n
+    endfunction
+
+    function! MSG(n, enr, emsg)
+	let g:taken = g:taken . "M" . a:n
+	let english = v:lang == "C" || v:lang =~ '^[Ee]n'
+	if a:enr == ""
+	    Xout "TODO: Add message number for:" a:emsg
+	    let v:errmsg = ":" . v:errmsg
+	endif
+	if v:errmsg !~ '^'.a:enr.':' || (english && v:errmsg !~ a:emsg)
+	    if v:errmsg == ""
+		Xout "Expr" a:n.": Message missing."
+		let g:taken = g:taken . "x"
+	    else
+		let v:errmsg = escape(v:errmsg, '"')
+		Xout "Expr" a:n.": Unexpected message:" v:errmsg
+		let g:taken = g:taken . "X"
+	    endif
+	endif
+    endfunction
+
+    function! CONT(n)
+	let g:taken = g:taken . "C" . a:n
+    endfunction
+
+    let v:errmsg = ""
+    XloopINIT 1 2
+
+    try
+	let t = 1
+	while t <= 14
+	    let g:taken = g:taken . "T" . t
+	    let v:errmsg = ""
+	    try
+		let caught = 0
+		if t == 1
+		    let v{novar + CONT(t)} = 0
+		elseif t == 2
+		    let v{novar + CONT(t)}
+		elseif t == 3
+		    let var = exists('v{novar + CONT(t)}')
+		elseif t == 4
+		    unlet v{novar + CONT(t)}
+		elseif t == 5
+		    function F{novar + CONT(t)}()
+		    endfunction
+		elseif t == 6
+		    function F{novar + CONT(t)}
+		elseif t == 7
+		    let var = exists('*F{novar + CONT(t)}')
+		elseif t == 8
+		    delfunction F{novar + CONT(t)}
+		elseif t == 9
+		    echo novar + CONT(t)
+		elseif t == 10
+		    echo v{novar + CONT(t)}
+		elseif t == 11
+		    echo F{novar + CONT(t)}
+		elseif t == 12
+		    let var = novar + CONT(t)
+		elseif t == 13
+		    let var = v{novar + CONT(t)}
+		elseif t == 14
+		    let var = F{novar + CONT(t)}()
+		endif
+	    catch /^Vim\((\a\+)\)\=:/
+		" v:errmsg is not set when the error message is converted to an
+		" exception.  Set it to the original error message.
+		let v:errmsg = substitute(v:exception,
+		    \ '^Vim\((\a\+)\)\=:', '', "")
+		let caught = 1
+	    finally
+		if !caught	" no error exceptions ($VIMNOERRTHROW set)
+		    if t <= 8 && t != 3
+			call MSG(t, 'E475', 'Invalid argument\>')
+		    else
+			call MSG(t, 'E15', "Invalid expression")
+		    endif
+		else
+		    if t == 2 || t == 4
+			call MSG(t, 'E475', 'Invalid argument\>')
+		    else
+			call MSG(t, 'E121', "Undefined variable")
+		    endif
+		endif
+		let t = t + 1
+		XloopNEXT
+		continue	" discard an aborting error
+	    endtry
+	endwhile
+    catch /.*/
+	Xloop 1					" X: 0
+	Xout t.":" v:exception "in" ExtraVimThrowpoint()
+    endtry
+
+    function! T(n, expr, enr, emsg)
+	try
+	    let g:taken = g:taken . "T" . a:n
+	    let v:errmsg = ""
+	    try
+		let caught = 0
+		execute "let var = " . a:expr
+	    catch /^Vim\((\a\+)\)\=:/
+		" v:errmsg is not set when the error message is converted to an
+		" exception.  Set it to the original error message.
+		let v:errmsg = substitute(v:exception,
+		    \ '^Vim\((\a\+)\)\=:', '', "")
+		let caught = 1
+	    finally
+		if !caught	" no error exceptions ($VIMNOERRTHROW set)
+		    call MSG(a:n, 'E15', "Invalid expression")
+		else
+		    call MSG(a:n, a:enr, a:emsg)
+		endif
+		XloopNEXT
+		" Discard an aborting error:
+		return
+	    endtry
+	catch /.*/
+	    Xloop 1				" X: 0
+	    Xout a:n.":" v:exception "in" ExtraVimThrowpoint()
+	endtry
+    endfunction
+
+    call T(15, 'Nofunc() + CONT(15)',	'E117',	"Unknown function")
+    call T(16, 'F(1 2 + CONT(16))',	'E116',	"Invalid arguments")
+    call T(17, 'F(1, 2) + CONT(17)',	'E118',	"Too many arguments")
+    call T(18, 'F() + CONT(18)',	'E119',	"Not enough arguments")
+    call T(19, '{(1} + CONT(19)',	'E110',	"Missing ')'")
+    call T(20, '("abc"[1) + CONT(20)',	'E111',	"Missing ']'")
+    call T(21, '(1 +) + CONT(21)',	'E15',	"Invalid expression")
+    call T(22, '1 2 + CONT(22)',	'E15',	"Invalid expression")
+    call T(23, '(1 ? 2) + CONT(23)',	'E109',	"Missing ':' after '?'")
+    call T(24, '("abc) + CONT(24)',	'E114',	"Missing quote")
+    call T(25, "('abc) + CONT(25)",	'E115',	"Missing quote")
+    call T(26, '& + CONT(26)',		'E112', "Option name missing")
+    call T(27, '&asdf + CONT(27)',	'E113', "Unknown option")
+
+    Xpath 134217728				" X: 134217728
+
+    let expected = ""
+	\ . "T1M1T2M2T3M3T4M4T5M5T6M6T7M7T8M8T9M9T10M10T11M11T12M12T13M13T14M14"
+	\ . "T15M15T16M16T17M17T18M18T19M19T20M20T21M21T22M22T23M23T24M24T25M25"
+	\ . "T26M26T27M27"
+
+    if taken != expected
+	Xpath 268435456				" X: 0
+	Xout "'taken' is" taken "instead of" expected
+	if substitute(taken, '\(.*\)T3M3x\(.*\)', '\1T3M3\2', "") == expected
+	    Xout "Is ++emsg_skip for var with expr_start non-NULL"
+		\ "in f_exists ok?"
+	endif
+    endif
+
+    unlet! var caught taken expected
+    call delete(WA_t5)
+    unlet! WA_t5
+    delfunction WA_t5
+
+endif
+
+Xcheck 134217728
+
+
+"-------------------------------------------------------------------------------
+" Test 79:  Throwing one of several errors for the same command		    {{{1
+"
+"	    When several errors appear in a row (for instance during expression
+"	    evaluation), the first as the most specific one is used when
+"	    throwing an error exception.  If, however, a syntax error is
+"	    detected afterwards, this one is used for the error exception.
+"	    On a syntax error, the next command is not executed, on a normal
+"	    error, however, it is (relevant only in a function without the
+"	    "abort" flag).  v:errmsg is not set.
+"
+"	    If throwing error exceptions is configured off, v:errmsg is always
+"	    set to the latest error message, that is, to the more general
+"	    message or the syntax error, respectively.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+XloopINIT 1 2
+
+function! NEXT(cmd)
+    exec a:cmd . " | Xloop 1"
+endfunction
+
+call NEXT('echo novar')				" X: 1 *  1  (checks nextcmd)
+XloopNEXT
+call NEXT('let novar #')			" X: 0 *  2  (skips nextcmd)
+XloopNEXT
+call NEXT('unlet novar #')			" X: 0 *  4  (skips nextcmd)
+XloopNEXT
+call NEXT('let {novar}')			" X: 0 *  8  (skips nextcmd)
+XloopNEXT
+call NEXT('unlet{ novar}')			" X: 0 * 16  (skips nextcmd)
+
+function! EXEC(cmd)
+    exec a:cmd
+endfunction
+
+function! MATCH(expected, msg, enr, emsg)
+    let msg = a:msg
+    if a:enr == ""
+	Xout "TODO: Add message number for:" a:emsg
+	let msg = ":" . msg
+    endif
+    let english = v:lang == "C" || v:lang =~ '^[Ee]n'
+    if msg !~ '^'.a:enr.':' || (english && msg !~ a:emsg)
+	let match =  0
+	if a:expected		" no match although expected
+	    if a:msg == ""
+		Xout "Message missing."
+	    else
+		let msg = escape(msg, '"')
+		Xout "Unexpected message:" msg
+	    endif
+	endif
+    else
+	let match =  1
+	if !a:expected		" match although not expected
+	    let msg = escape(msg, '"')
+	    Xout "Unexpected message:" msg
+	endif
+    endif
+    return match
+endfunction
+
+try
+
+    while 1				" dummy loop
+	try
+	    let v:errmsg = ""
+	    let caught = 0
+	    let thrmsg = ""
+	    call EXEC('echo novar')	" normal error
+	catch /^Vim\((\a\+)\)\=:/
+	    let caught = 1
+	    let thrmsg = substitute(v:exception, '^Vim\((\a\+)\)\=:', '', "")
+	finally
+	    Xpath 32				" X: 32
+	    if !caught
+		if !$VIMNOERRTHROW
+		    Xpath 64			" X: 0
+		endif
+	    elseif !MATCH(1, thrmsg, 'E121', "Undefined variable")
+	    \ || v:errmsg != ""
+		Xpath 128			" X: 0
+	    endif
+	    if !caught && !MATCH(1, v:errmsg, 'E15', "Invalid expression")
+		Xpath 256			" X: 0
+	    endif
+	    break			" discard error if $VIMNOERRTHROW == 1
+	endtry
+    endwhile
+
+    Xpath 512					" X: 512
+    let cmd = "let"
+    XloopINIT 1024 32
+    while cmd != ""
+	try
+	    let v:errmsg = ""
+	    let caught = 0
+	    let thrmsg = ""
+	    call EXEC(cmd . ' novar #')		" normal plus syntax error
+	catch /^Vim\((\a\+)\)\=:/
+	    let caught = 1
+	    let thrmsg = substitute(v:exception, '^Vim\((\a\+)\)\=:', '', "")
+	finally
+	    Xloop 1				" X: 1024 * (1 + 32)
+	    if !caught
+		if !$VIMNOERRTHROW
+		    Xloop 2			" X: 0
+		endif
+	    else
+		if cmd == "let"
+		    let match = MATCH(0, thrmsg, 'E106', "Unknown variable")
+		elseif cmd == "unlet"
+		    let match = MATCH(0, thrmsg, 'E108', "No such variable")
+		endif
+		if match					" normal error
+		    Xloop 4			" X: 0
+		endif
+		if !MATCH(1, thrmsg, 'E488', "Trailing characters")
+		\|| v:errmsg != ""
+								" syntax error
+		    Xloop 8			" X: 0
+		endif
+	    endif
+	    if !caught && !MATCH(1, v:errmsg, 'E488', "Trailing characters")
+								" last error
+		Xloop 16			" X: 0
+	    endif
+	    if cmd == "let"
+		let cmd = "unlet"
+	    else
+		let cmd = ""
+	    endif
+	    XloopNEXT
+	    continue			" discard error if $VIMNOERRTHROW == 1
+	endtry
+    endwhile
+
+    Xpath 1048576				" X: 1048576
+    let cmd = "let"
+    XloopINIT 2097152 32
+    while cmd != ""
+	try
+	    let v:errmsg = ""
+	    let caught = 0
+	    let thrmsg = ""
+	    call EXEC(cmd . ' {novar}')		" normal plus syntax error
+	catch /^Vim\((\a\+)\)\=:/
+	    let caught = 1
+	    let thrmsg = substitute(v:exception, '^Vim\((\a\+)\)\=:', '', "")
+	finally
+	    Xloop 1				" X: 2097152 * (1 + 32)
+	    if !caught
+		if !$VIMNOERRTHROW
+		    Xloop 2			" X: 0
+		endif
+	    else
+		if MATCH(0, thrmsg, 'E121', "Undefined variable") " normal error
+		    Xloop 4			" X: 0
+		endif
+		if !MATCH(1, thrmsg, 'E475', 'Invalid argument\>')
+		\ || v:errmsg != ""				  " syntax error
+		    Xloop 8			" X: 0
+		endif
+	    endif
+	    if !caught && !MATCH(1, v:errmsg, 'E475', 'Invalid argument\>')
+								" last error
+		Xloop 16			" X: 0
+	    endif
+	    if cmd == "let"
+		let cmd = "unlet"
+	    else
+		let cmd = ""
+	    endif
+	    XloopNEXT
+	    continue			" discard error if $VIMNOERRTHROW == 1
+	endtry
+    endwhile
+
+catch /.*/
+    " The Xpath command does not accept 2^31 (negative); add explicitly:
+    let Xpath = Xpath + 2147483648		" X: 0
+    Xout v:exception "in" v:throwpoint
+endtry
+
+unlet! next_command thrmsg match
+delfunction NEXT
+delfunction EXEC
+delfunction MATCH
+
+Xcheck 70288929
+
+
+"-------------------------------------------------------------------------------
+" Test 80:  Syntax error in expression for illegal :elseif		    {{{1
+"
+"	    If there is a syntax error in the expression after an illegal
+"	    :elseif, an error message is given (or an error exception thrown)
+"	    for the illegal :elseif rather than the expression error.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! MSG(enr, emsg)
+    let english = v:lang == "C" || v:lang =~ '^[Ee]n'
+    if a:enr == ""
+	Xout "TODO: Add message number for:" a:emsg
+	let v:errmsg = ":" . v:errmsg
+    endif
+    let match = 1
+    if v:errmsg !~ '^'.a:enr.':' || (english && v:errmsg !~ a:emsg)
+	let match = 0
+	if v:errmsg == ""
+	    Xout "Message missing."
+	else
+	    let v:errmsg = escape(v:errmsg, '"')
+	    Xout "Unexpected message:" v:errmsg
+	endif
+    endif
+    return match
+endfunction
+
+let v:errmsg = ""
+if 0
+else
+elseif 1 ||| 2
+endif
+Xpath 1						" X: 1
+if !MSG('E584', ":elseif after :else")
+    Xpath 2					" X: 0
+endif
+
+let v:errmsg = ""
+if 1
+else
+elseif 1 ||| 2
+endif
+Xpath 4						" X: 4
+if !MSG('E584', ":elseif after :else")
+    Xpath 8					" X: 0
+endif
+
+let v:errmsg = ""
+elseif 1 ||| 2
+Xpath 16					" X: 16
+if !MSG('E582', ":elseif without :if")
+    Xpath 32					" X: 0
+endif
+
+let v:errmsg = ""
+while 1
+    elseif 1 ||| 2
+endwhile
+Xpath 64					" X: 64
+if !MSG('E582', ":elseif without :if")
+    Xpath 128					" X: 0
+endif
+
+while 1
+    try
+	try
+	    let v:errmsg = ""
+	    let caught = 0
+	    if 0
+	    else
+	    elseif 1 ||| 2
+	    endif
+	catch /^Vim\((\a\+)\)\=:/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim\((\a\+)\)\=:', '', "")
+	finally
+	    Xpath 256				" X: 256
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 512			" X: 0
+	    endif
+	    if !MSG('E584', ":elseif after :else")
+		Xpath 1024			" X: 0
+	    endif
+	endtry
+    catch /.*/
+	Xpath 2048				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+while 1
+    try
+	try
+	    let v:errmsg = ""
+	    let caught = 0
+	    if 1
+	    else
+	    elseif 1 ||| 2
+	    endif
+	catch /^Vim\((\a\+)\)\=:/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim\((\a\+)\)\=:', '', "")
+	finally
+	    Xpath 4096				" X: 4096
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 8192			" X: 0
+	    endif
+	    if !MSG('E584', ":elseif after :else")
+		Xpath 16384			" X: 0
+	    endif
+	endtry
+    catch /.*/
+	Xpath 32768				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+while 1
+    try
+	try
+	    let v:errmsg = ""
+	    let caught = 0
+	    elseif 1 ||| 2
+	catch /^Vim\((\a\+)\)\=:/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim\((\a\+)\)\=:', '', "")
+	finally
+	    Xpath 65536				" X: 65536
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 131072			" X: 0
+	    endif
+	    if !MSG('E582', ":elseif without :if")
+		Xpath 262144			" X: 0
+	    endif
+	endtry
+    catch /.*/
+	Xpath 524288				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+while 1
+    try
+	try
+	    let v:errmsg = ""
+	    let caught = 0
+	    while 1
+		elseif 1 ||| 2
+	    endwhile
+	catch /^Vim\((\a\+)\)\=:/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim\((\a\+)\)\=:', '', "")
+	finally
+	    Xpath 1048576			" X: 1048576
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 2097152			" X: 0
+	    endif
+	    if !MSG('E582', ":elseif without :if")
+		Xpath 4194304			" X: 0
+	    endif
+	endtry
+    catch /.*/
+	Xpath 8388608				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+Xpath 16777216					" X: 16777216
+
+unlet! caught
+delfunction MSG
+
+Xcheck 17895765
+
+
+"-------------------------------------------------------------------------------
+" Test 81:  Discarding exceptions after an error or interrupt		    {{{1
+"
+"	    When an exception is thrown from inside a :try conditional without
+"	    :catch and :finally clauses and an error or interrupt occurs before
+"	    the :endtry is reached, the exception is discarded.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+    try
+	Xpath 1					" X: 1
+	try
+	    Xpath 2				" X: 2
+	    throw "arrgh"
+	    Xpath 4				" X: 0
+"	    if 1
+		Xpath 8				" X: 0
+	    " error after :throw: missing :endif
+	endtry
+	Xpath 16				" X: 0
+    catch /arrgh/
+	Xpath 32				" X: 0
+    endtry
+    Xpath 64					" X: 0
+endif
+
+if ExtraVim()
+    try
+	Xpath 128				" X: 128
+	try
+	    Xpath 256				" X: 256
+	    throw "arrgh"
+	    Xpath 512				" X: 0
+	endtry		" INTERRUPT
+	Xpath 1024				" X: 0
+    catch /arrgh/
+	Xpath 2048				" X: 0
+    endtry
+    Xpath 4096					" X: 0
+endif
+
+Xcheck 387
+
+
+"-------------------------------------------------------------------------------
+" Test 82:  Ignoring :catch clauses after an error or interrupt		    {{{1
+"
+"	    When an exception is thrown and an error or interrupt occurs before
+"	    the matching :catch clause is reached, the exception is discarded
+"	    and the :catch clause is ignored (also for the error or interrupt
+"	    exception being thrown then).
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+    try
+	try
+	    Xpath 1				" X: 1
+	    throw "arrgh"
+	    Xpath 2				" X: 0
+"	    if 1
+		Xpath 4				" X: 0
+		" error after :throw: missing :endif
+	catch /.*/
+	    Xpath 8				" X: 0
+	    Xout v:exception "in" ExtraVimThrowpoint()
+	catch /.*/
+	    Xpath 16				" X: 0
+	    Xout v:exception "in" ExtraVimThrowpoint()
+	endtry
+	Xpath 32				" X: 0
+    catch /arrgh/
+	Xpath 64				" X: 0
+    endtry
+    Xpath 128					" X: 0
+endif
+
+if ExtraVim()
+    function! E()
+	try
+	    try
+		Xpath 256			" X: 256
+		throw "arrgh"
+		Xpath 512			" X: 0
+"		if 1
+		    Xpath 1024			" X: 0
+		    " error after :throw: missing :endif
+	    catch /.*/
+		Xpath 2048			" X: 0
+		Xout v:exception "in" ExtraVimThrowpoint()
+	    catch /.*/
+		Xpath 4096			" X: 0
+		Xout v:exception "in" ExtraVimThrowpoint()
+	    endtry
+	    Xpath 8192				" X: 0
+	catch /arrgh/
+	    Xpath 16384				" X: 0
+	endtry
+    endfunction
+
+    call E()
+    Xpath 32768					" X: 0
+endif
+
+if ExtraVim()
+    try
+	try
+	    Xpath 65536				" X: 65536
+	    throw "arrgh"
+	    Xpath 131072			" X: 0
+	catch /.*/	"INTERRUPT
+	    Xpath 262144			" X: 0
+	    Xout v:exception "in" ExtraVimThrowpoint()
+	catch /.*/
+	    Xpath 524288			" X: 0
+	    Xout v:exception "in" ExtraVimThrowpoint()
+	endtry
+	Xpath 1048576				" X: 0
+    catch /arrgh/
+	Xpath 2097152				" X: 0
+    endtry
+    Xpath 4194304				" X: 0
+endif
+
+if ExtraVim()
+    function I()
+	try
+	    try
+		Xpath 8388608			" X: 8388608
+		throw "arrgh"
+		Xpath 16777216			" X: 0
+	    catch /.*/	"INTERRUPT
+		Xpath 33554432			" X: 0
+		Xout v:exception "in" ExtraVimThrowpoint()
+	    catch /.*/
+		Xpath 67108864			" X: 0
+		Xout v:exception "in" ExtraVimThrowpoint()
+	    endtry
+	    Xpath 134217728			" X: 0
+	catch /arrgh/
+	    Xpath 268435456			" X: 0
+	endtry
+    endfunction
+
+    call I()
+    Xpath 536870912				" X: 0
+endif
+
+Xcheck 8454401
+
+
+"-------------------------------------------------------------------------------
+" Test 83:  Executing :finally clauses after an error or interrupt	    {{{1
+"
+"	    When an exception is thrown and an error or interrupt occurs before
+"	    the :finally of the innermost :try is reached, the exception is
+"	    discarded and the :finally clause is executed.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+    try
+	Xpath 1					" X: 1
+	try
+	    Xpath 2				" X: 2
+	    throw "arrgh"
+	    Xpath 4				" X: 0
+"	    if 1
+		Xpath 8				" X: 0
+	    " error after :throw: missing :endif
+	finally
+	    Xpath 16				" X: 16
+	endtry
+	Xpath 32				" X: 0
+    catch /arrgh/
+	Xpath 64				" X: 0
+    endtry
+    Xpath 128					" X: 0
+endif
+
+if ExtraVim()
+    try
+	Xpath 256				" X: 256
+	try
+	    Xpath 512				" X: 512
+	    throw "arrgh"
+	    Xpath 1024				" X: 0
+	finally		"INTERRUPT
+	    Xpath 2048				" X: 2048
+	endtry
+	Xpath 4096				" X: 0
+    catch /arrgh/
+	Xpath 8192				" X: 0
+    endtry
+    Xpath 16384					" X: 0
+endif
+
+Xcheck 2835
+
+
+"-------------------------------------------------------------------------------
+" Test 84:  Exceptions in autocommand sequences.			    {{{1
+"
+"	    When an exception occurs in a sequence of autocommands for
+"	    a specific event, the rest of the sequence is not executed.  The
+"	    command that triggered the autocommand execution aborts, and the
+"	    exception is propagated to the caller.
+"
+"	    For the FuncUndefined event under a function call expression or
+"	    :call command, the function is not exexecuted, even when it has
+"	    been defined by the autocommands before the exception occurred.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    function! INT()
+	"INTERRUPT
+	let dummy = 0
+    endfunction
+
+    aug TMP
+	autocmd!
+
+	autocmd User x1 Xpath 1			" X: 1
+	autocmd User x1 throw "x1"
+	autocmd User x1 Xpath 2			" X: 0
+
+	autocmd User x2 Xpath 4			" X: 4
+	autocmd User x2 asdf
+	autocmd User x2 Xpath 8			" X: 0
+
+	autocmd User x3 Xpath 16		" X: 16
+	autocmd User x3 call INT()
+	autocmd User x3 Xpath 32		" X: 0
+
+	autocmd FuncUndefined U1 function! U1()
+	autocmd FuncUndefined U1     Xpath 64	" X: 0
+	autocmd FuncUndefined U1 endfunction
+	autocmd FuncUndefined U1 Xpath 128	" X: 128
+	autocmd FuncUndefined U1 throw "U1"
+	autocmd FuncUndefined U1 Xpath 256	" X: 0
+
+	autocmd FuncUndefined U2 function! U2()
+	autocmd FuncUndefined U2     Xpath 512	" X: 0
+	autocmd FuncUndefined U2 endfunction
+	autocmd FuncUndefined U2 Xpath 1024	" X: 1024
+	autocmd FuncUndefined U2 ASDF
+	autocmd FuncUndefined U2 Xpath 2048	" X: 0
+
+	autocmd FuncUndefined U3 function! U3()
+	autocmd FuncUndefined U3     Xpath 4096	" X: 0
+	autocmd FuncUndefined U3 endfunction
+	autocmd FuncUndefined U3 Xpath 8192	" X: 8192
+	autocmd FuncUndefined U3 call INT()
+	autocmd FuncUndefined U3 Xpath 16384	" X: 0
+    aug END
+
+    try
+	try
+	    Xpath 32768				" X: 32768
+	    doautocmd User x1
+	catch /x1/
+	    Xpath 65536				" X: 65536
+	endtry
+
+	while 1
+	    try
+		Xpath 131072			" X: 131072
+		let caught = 0
+		doautocmd User x2
+	    catch /asdf/
+		let caught = 1
+	    finally
+		Xpath 262144			" X: 262144
+		if !caught && !$VIMNOERRTHROW
+		    Xpath 524288		" X: 0
+		    " Propagate uncaught error exception,
+		else
+		    " ... but break loop for caught error exception,
+		    " or discard error and break loop if $VIMNOERRTHROW
+		    break
+		endif
+	    endtry
+	endwhile
+
+	while 1
+	    try
+		Xpath 1048576			" X: 1048576
+		let caught = 0
+		doautocmd User x3
+	    catch /Vim:Interrupt/
+		let caught = 1
+	    finally
+		Xpath 2097152			" X: 2097152
+		if !caught && !$VIMNOINTTHROW
+		    Xpath 4194304		" X: 0
+		    " Propagate uncaught interrupt exception,
+		else
+		    " ... but break loop for caught interrupt exception,
+		    " or discard interrupt and break loop if $VIMNOINTTHROW
+		    break
+		endif
+	    endtry
+	endwhile
+
+	if exists("*U1") | delfunction U1 | endif
+	if exists("*U2") | delfunction U2 | endif
+	if exists("*U3") | delfunction U3 | endif
+
+	try
+	    Xpath 8388608			" X: 8388608
+	    call U1()
+	catch /U1/
+	    Xpath 16777216			" X: 16777216
+	endtry
+
+	while 1
+	    try
+		Xpath 33554432			" X: 33554432
+		let caught = 0
+		call U2()
+	    catch /ASDF/
+		let caught = 1
+	    finally
+		Xpath 67108864			" X: 67108864
+		if !caught && !$VIMNOERRTHROW
+		    Xpath 134217728		" X: 0
+		    " Propagate uncaught error exception,
+		else
+		    " ... but break loop for caught error exception,
+		    " or discard error and break loop if $VIMNOERRTHROW
+		    break
+		endif
+	    endtry
+	endwhile
+
+	while 1
+	    try
+		Xpath 268435456			" X: 268435456
+		let caught = 0
+		call U3()
+	    catch /Vim:Interrupt/
+		let caught = 1
+	    finally
+		Xpath 536870912			" X: 536870912
+		if !caught && !$VIMNOINTTHROW
+		    Xpath 1073741824		" X: 0
+		    " Propagate uncaught interrupt exception,
+		else
+		    " ... but break loop for caught interrupt exception,
+		    " or discard interrupt and break loop if $VIMNOINTTHROW
+		    break
+		endif
+	    endtry
+	endwhile
+    catch /.*/
+	" The Xpath command does not accept 2^31 (negative); display explicitly:
+	exec "!echo 2147483648 >>" . g:ExtraVimResult
+	Xout "Caught" v:exception "in" v:throwpoint
+    endtry
+
+    unlet caught
+    delfunction INT
+    delfunction U1
+    delfunction U2
+    delfunction U3
+    au! TMP
+    aug! TMP
+endif
+
+Xcheck 934782101
+
+
+"-------------------------------------------------------------------------------
+" Test 85:  Error exceptions in autocommands for I/O command events	    {{{1
+"
+"	    When an I/O command is inside :try/:endtry, autocommands to be
+"	    executed after it should be skipped on an error (exception) in the
+"	    command itself or in autocommands to be executed before the command.
+"	    In the latter case, the I/O command should not be executed either.
+"	    Example 1: BufWritePre, :write, BufWritePost
+"	    Example 2: FileReadPre, :read, FileReadPost.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+function! MSG(enr, emsg)
+    let english = v:lang == "C" || v:lang =~ '^[Ee]n'
+    if a:enr == ""
+	Xout "TODO: Add message number for:" a:emsg
+	let v:errmsg = ":" . v:errmsg
+    endif
+    let match = 1
+    if v:errmsg !~ '^'.a:enr.':' || (english && v:errmsg !~ a:emsg)
+	let match = 0
+	if v:errmsg == ""
+	    Xout "Message missing."
+	else
+	    let v:errmsg = escape(v:errmsg, '"')
+	    Xout "Unexpected message:" v:errmsg
+	endif
+    endif
+    return match
+endfunction
+
+" Remove the autocommands for the events specified as arguments in all used
+" autogroups.
+function! Delete_autocommands(...)
+    let augfile = tempname()
+    while 1
+	try
+	    exec "redir >" . augfile
+	    aug
+	    redir END
+	    exec "edit" augfile
+	    g/^$/d
+	    norm G$
+	    let wrap = "w"
+	    while search('\%(  \|^\)\@<=.\{-}\%(  \)\@=', wrap) > 0
+		let wrap = "W"
+		exec "norm y/  \n"
+		let argno = 1
+		while argno <= a:0
+		    exec "au!" escape(@", " ") a:{argno}
+		    let argno = argno + 1
+		endwhile
+	    endwhile
+	catch /.*/
+	finally
+	    bwipeout!
+	    call delete(augfile)
+	    break		" discard errors for $VIMNOERRTHROW
+	endtry
+    endwhile
+endfunction
+
+call Delete_autocommands("BufWritePre", "BufWritePost")
+
+while 1
+    try
+	try
+	    let post = 0
+	    aug TMP
+		au! BufWritePost * let post = 1
+	    aug END
+	    let caught = 0
+	    write /n/o/n/e/x/i/s/t/e/n/t
+	catch /^Vim(write):/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim(write):', '', "")
+	finally
+	    Xpath 1				" X: 1
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 2				" X: 0
+	    endif
+	    let v:errmsg = substitute(v:errmsg, '^"/n/o/n/e/x/i/s/t/e/n/t" ',
+		\ '', "")
+	    if !MSG('E212', "Can't open file for writing")
+		Xpath 4				" X: 0
+	    endif
+	    if post
+		Xpath 8				" X: 0
+		Xout "BufWritePost commands executed after write error"
+	    endif
+	    au! TMP
+	    aug! TMP
+	endtry
+    catch /.*/
+	Xpath 16				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+while 1
+    try
+	try
+	    let post = 0
+	    aug TMP
+		au! BufWritePre  * asdf
+		au! BufWritePost * let post = 1
+	    aug END
+	    let tmpfile = tempname()
+	    let caught = 0
+	    exec "write" tmpfile
+	catch /^Vim\((write)\)\=:/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim\((write)\)\=:', '', "")
+	finally
+	    Xpath 32				" X: 32
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 64			" X: 0
+	    endif
+	    let v:errmsg = substitute(v:errmsg, '^"'.tmpfile.'" ', '', "")
+	    if !MSG('E492', "Not an editor command")
+		Xpath 128			" X: 0
+	    endif
+	    if filereadable(tmpfile)
+		Xpath 256			" X: 0
+		Xout ":write command not suppressed after BufWritePre error"
+	    endif
+	    if post
+		Xpath 512			" X: 0
+		Xout "BufWritePost commands executed after BufWritePre error"
+	    endif
+	    au! TMP
+	    aug! TMP
+	endtry
+    catch /.*/
+	Xpath 1024				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+call delete(tmpfile)
+
+call Delete_autocommands("BufWritePre", "BufWritePost",
+    \ "BufReadPre", "BufReadPost", "FileReadPre", "FileReadPost")
+
+while 1
+    try
+	try
+	    let post = 0
+	    aug TMP
+		au! FileReadPost * let post = 1
+	    aug END
+	    let caught = 0
+	    read /n/o/n/e/x/i/s/t/e/n/t
+	catch /^Vim(read):/
+	    let caught = 1
+	    let v:errmsg = substitute(v:exception, '^Vim(read):', '', "")
+	finally
+	    Xpath 2048				" X: 2048
+	    if !caught && !$VIMNOERRTHROW
+		Xpath 4096			" X: 0
+	    endif
+	    let v:errmsg = substitute(v:errmsg, ' /n/o/n/e/x/i/s/t/e/n/t$',
+		\ '', "")
+	    if !MSG('E484', "Can't open file")
+		Xpath 8192			" X: 0
+	    endif
+	    if post
+		Xpath 16384			" X: 0
+		Xout "FileReadPost commands executed after write error"
+	    endif
+	    au! TMP
+	    aug! TMP
+	endtry
+    catch /.*/
+	Xpath 32768				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+while 1
+    try
+	let infile = tempname()
+	let tmpfile = tempname()
+	exec "!echo XYZ >" . infile
+	exec "edit" tmpfile
+	try
+	    Xpath 65536				" X: 65536
+	    try
+		let post = 0
+		aug TMP
+		    au! FileReadPre  * asdf
+		    au! FileReadPost * let post = 1
+		aug END
+		let caught = 0
+		exec "0read" infile
+	    catch /^Vim\((read)\)\=:/
+		let caught = 1
+		let v:errmsg = substitute(v:exception, '^Vim\((read)\)\=:', '',
+		    \ "")
+	    finally
+		Xpath 131072			" X: 131072
+		if !caught && !$VIMNOERRTHROW
+		    Xpath 262144		" X: 0
+		endif
+		let v:errmsg = substitute(v:errmsg, ' '.infile.'$', '', "")
+		if !MSG('E492', "Not an editor command")
+		    Xpath 524288		" X: 0
+		endif
+		if getline("1") == "XYZ"
+		    Xpath 1048576		" X: 0
+		    Xout ":read command not suppressed after FileReadPre error"
+		endif
+		if post
+		    Xpath 2097152		" X: 0
+		    Xout "FileReadPost commands executed after " .
+			\ "FileReadPre error"
+		endif
+		au! TMP
+		aug! TMP
+	    endtry
+	finally
+	    bwipeout!
+	endtry
+    catch /.*/
+	Xpath 4194304				" X: 0
+	Xout v:exception "in" v:throwpoint
+    finally
+	break		" discard error for $VIMNOERRTHROW
+    endtry
+endwhile
+
+call delete(infile)
+call delete(tmpfile)
+unlet! caught post infile tmpfile
+delfunction MSG
+delfunction Delete_autocommands
+
+Xcheck 198689
+
+
+"-------------------------------------------------------------------------------
+" Test 86:  $VIMNOERRTHROW and $VIMNOINTTHROW support			    {{{1
+"
+"	    It is possible to configure Vim for throwing exceptions on error
+"	    or interrupt, controlled by variables $VIMNOERRTHROW and
+"	    $VIMNOINTTHROW.  This is just for increasing the number of tests.
+"	    All tests here should run for all four combinations of setting
+"	    these variables to 0 or 1.  The variables are intended for the
+"	    development phase only.  In the final release, Vim should be
+"	    configured to always use error and interrupt exceptions.
+"
+"	    The test result is "OK",
+"
+"		- if the $VIMNOERRTHROW and the $VIMNOINTTHROW control are not
+"		  configured and exceptions are thrown on error and on
+"		  interrupt.
+"
+"		- if the $VIMNOERRTHROW or the $VIMNOINTTHROW control is
+"		  configured and works as intended.
+"
+"	    What actually happens, is shown in the test output.
+"
+"	    Otherwise, the test result is "FAIL", and the test output describes
+"	    the problem.
+"
+" IMPORTANT:  This must be the last test because it sets $VIMNOERRTHROW and
+"	      $VIMNOINTTHROW.
+"-------------------------------------------------------------------------------
+
+XpathINIT
+
+if ExtraVim()
+
+    function! ThrowOnError()
+	XloopNEXT
+	let caught = 0
+	try
+	    Xloop 1				" X: 1 + 8 + 64
+	    asdf
+	catch /.*/
+	    let caught = 1	" error exception caught
+	finally
+	    Xloop 2				" X: 2 + 16 + 128
+	    return caught	" discard aborting error
+	endtry
+	Xloop 4					" X: 0
+    endfunction
+
+    let quits_skipped = 0
+
+    function! ThrowOnInterrupt()
+	XloopNEXT
+	let caught = 0
+	try
+	    Xloop 1				" X: (1 + 8 + 64) * 512
+	    "INTERRUPT3
+	    let dummy = 0
+	    let g:quits_skipped = g:quits_skipped + 1
+	catch /.*/
+	    let caught = 1	" interrupt exception caught
+	finally
+	    Xloop 2				" X: (2 + 16 + 128) * 512
+	    return caught	" discard interrupt
+	endtry
+	Xloop 4					" X: 0
+    endfunction
+
+    function! CheckThrow(Type)
+	execute 'return ThrowOn' . a:Type . '()'
+    endfunction
+
+    function! CheckConfiguration(type)	    " type is "error" or "interrupt"
+
+	let type = a:type
+	let Type = substitute(type, '.*', '\u&', "")
+	let VAR = '$VIMNO' . substitute(type, '\(...\).*', '\U\1', "") . 'THROW'
+
+	if type == "error"
+	    XloopINIT! 1 8
+	elseif type == "interrupt"
+	    XloopINIT! 512 8
+	endif
+
+	exec 'let requested_for_tests = exists(VAR) && ' . VAR . ' == 0'
+	exec 'let suppressed_for_tests = ' . VAR . ' != 0'
+	let used_in_tests = CheckThrow(Type)
+
+	exec 'let ' . VAR . ' = 0'
+	let request_works = CheckThrow(Type)
+
+	exec 'let ' . VAR . ' = 1'
+	let suppress_works = !CheckThrow(Type)
+
+	if type == "error"
+	    XloopINIT! 262144 8
+	elseif type == "interrupt"
+	    XloopINIT! 2097152 8
+
+	    if g:quits_skipped != 0
+		Xloop 1				" X: 0*2097152
+		Xout "Test environment error.  Interrupt breakpoints skipped: "
+		    \ . g:quits_skipped . ".\n"
+		    \ . "Cannot check whether interrupt exceptions are thrown."
+		return
+	    endif
+	endif
+
+	let failure =
+	    \ !suppressed_for_tests && !used_in_tests
+	    \ || !request_works
+
+	let contradiction =
+	    \ used_in_tests
+		\ ? suppressed_for_tests && !request_works
+		\ : !suppressed_for_tests
+
+	if failure
+	    " Failure in configuration.
+	    Xloop 2				" X: 0 * 2*  (262144 + 2097152)
+	elseif contradiction
+	    " Failure in test logic.  Should not happen.
+	    Xloop 4				" X: 0 * 4 * (262144 + 2097152)
+	endif
+
+	let var_control_configured =
+	    \ request_works != used_in_tests
+	    \ || suppress_works == used_in_tests
+
+	let var_control_not_configured =
+	    \ requested_for_tests || suppressed_for_tests
+		\ ? request_works && !suppress_works
+		\ : request_works == used_in_tests
+		    \ && suppress_works != used_in_tests
+
+	let with = used_in_tests ? "with" : "without"
+
+	let set = suppressed_for_tests ? "non-zero" :
+	    \ requested_for_tests ? "0" : "unset"
+
+	let although = contradiction && !var_control_not_configured
+	    \ ? ",\nalthough "
+	    \ : ".\n"
+
+	let output = "All tests were run " . with . " throwing exceptions on "
+	    \ . type . although
+
+	if !var_control_not_configured
+	    let output = output . VAR . " was " . set . "."
+
+	    if !request_works && !requested_for_tests
+		let output = output .
+		    \ "\n" . Type . " exceptions are not thrown when " . VAR .
+		    \ " is\nset to 0."
+	    endif
+
+	    if !suppress_works && (!used_in_tests ||
+	    \ !request_works &&
+	    \ !requested_for_tests && !suppressed_for_tests)
+		let output = output .
+		    \ "\n" . Type . " exceptions are thrown when " . VAR .
+		    \ " is set to 1."
+	    endif
+
+	    if !failure && var_control_configured
+		let output = output .
+		    \ "\nRun tests also with " . substitute(VAR, '^\$', '', "")
+		    \ . "=" . used_in_tests . "."
+		    \ . "\nThis is for testing in the development phase only."
+		    \ . "  Remove the \n"
+		    \ . VAR . " control in the final release."
+	    endif
+	else
+	    let output = output .
+		\ "The " . VAR . " control is not configured."
+	endif
+
+	Xout output
+    endfunction
+
+    call CheckConfiguration("error")
+    Xpath 16777216				" X: 16777216
+    call CheckConfiguration("interrupt")
+    Xpath 33554432				" X: 33554432
+endif
+
+Xcheck 50443995
+
+" IMPORTANT: No test should be added after this test because it changes
+"	     $VIMNOERRTHROW and $VIMNOINTTHROW.
+
+
+"-------------------------------------------------------------------------------
+" Modelines								    {{{1
+" vim: ts=8 sw=4 tw=80 fdm=marker
+" vim: fdt=substitute(substitute(foldtext(),\ '\\%(^+--\\)\\@<=\\(\\s*\\)\\(.\\{-}\\)\:\ \\%(\"\ \\)\\=\\(Test\ \\d*\\)\:\\s*',\ '\\3\ (\\2)\:\ \\1',\ \"\"),\ '\\(Test\\s*\\)\\(\\d\\)\\D\\@=',\ '\\1\ \\2',\ "")
+"-------------------------------------------------------------------------------