#							-*- Autotest -*-

AT_BANNER([M4sh.])

# Copyright (C) 2000-2017, 2020-2021 Free Software Foundation, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

## --------------------------- ##
## Re-exec with CONFIG_SHELL.  ##
## --------------------------- ##

AT_SETUP([No extra re-exec with CONFIG_SHELL])
AT_KEYWORDS([CONFIG_SHELL])
AT_DATA_M4SH([script.as],
[[
dnl We have to muck with internal details to goad the script into
dnl thinking that the default shell is always good enough.
m4_define([_AS_DETECT_REQUIRED_BODY], [])dnl
m4_define([_AS_DETECT_SUGGESTED_BODY], [])dnl
AS_INIT
echo foo > ok
]])
AT_CHECK_M4SH
AT_CHECK([CONFIG_SHELL=/bin/false ./script], [0], [], [])
AT_CHECK([test -f ok], [0])
rm -f ok

AT_CLEANUP

AT_SETUP([Forced re-exec with CONFIG_SHELL])
AT_KEYWORDS([CONFIG_SHELL])

AT_DATA_M4SH([script.as],
[[m4_define([_AS_FORCE_REEXEC_WITH_CONFIG_SHELL], [yes])
AS_INIT
echo foo > sentinel
]])
AT_CHECK_M4SH

# Calling the script simply 'script' could cause problems with
# Solaris /usr/xpg4/bin/sh in the invocation 'sh script' below.
mv -f script script2

AT_DATA([fake-shell],
[[#!/bin/sh
echo 'Fake shell executed.'
shift # fake shell
echo "nargs = @S|@#"
for i
do
  printf ' :%s:\n' "$i"
done
]])
chmod a+x fake-shell

AT_CHECK([CONFIG_SHELL=./fake-shell ./script2 1 2 4 8], [0],
[Fake shell executed.
nargs = 4
 :1:
 :2:
 :4:
 :8:
], [])
AT_CHECK([test ! -f sentinel], [0])
test ! -f sentinel || rm -f sentinel # Cleanup for next test.

AT_CHECK(
[CONFIG_SHELL=`pwd`/fake-shell sh script2 a 'b  c' '  d	   e '],
[0],
[Fake shell executed.
nargs = 3
 :a:
 :b  c:
 :  d	   e :
], [])
AT_CHECK([test ! -f sentinel], [0])
test ! -f sentinel || rm -f sentinel # Cleanup for next test.

AT_CHECK([(PATH=`pwd`:$PATH; export PATH;
CONFIG_SHELL=fake-shell script2 '' '&' '!;*' '<($[]@%:@)>,' 'x
y  z
1 2 3')], [0],
[Fake shell executed.
nargs = 5
 ::
 :&:
 :!;*:
 :<($[]@%:@)>,:
 :x
y  z
1 2 3:
], [])
AT_CHECK([test ! -f sentinel], [0])
test ! -f sentinel || rm -f sentinel # Cleanup for next test.

AT_CLEANUP

AT_SETUP([Configure re-execs self with CONFIG_SHELL])

AT_DATA([configure.ac],
[[AC_INIT
echo foobar >> quux
AC_OUTPUT
]])

AT_CHECK_AUTOCONF

AT_DATA([cfg-sh],
[[#!/bin/sh
: > cfg-sh-has-run
exec sh "@S|@@"
]])
chmod a+x cfg-sh

AT_CAPTURE_FILE([config.log])
AT_CHECK([env CONFIG_SHELL=./cfg-sh ./configure],
         [0],
[[configure: creating ./config.status
]], [])
# ./configure re-executed itself.
AT_CHECK([test -f cfg-sh-has-run], [0])
# And did that not to cause extra execution of later commands.
AT_CHECK([cat quux], [0], [foobar
], [])

rm -f quux cfg-sh*
AT_CLEANUP


## ------------------- ##
## AS_WARN, AS_ERROR.  ##
## ------------------- ##

AT_SETUP([AS@&t@_WARN and AS@&t@_ERROR])
AT_KEYWORDS([m4sh])

dnl without logging
AT_DATA_M4SH([script.as],
[[AS_INIT
AS_WARN([*watch out*])dnl

if test x"$die" != x; then
  AS_ERROR([you're dead])dnl

  AS_ERROR([really])dnl

fi
echo got here
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [],
[[got here
]], [[script: WARNING: *watch out*
]])
AT_CHECK([die=: $CONFIG_SHELL ./script], [1],
[], [[script: WARNING: *watch out*
script: error: you're dead
]])

dnl with logging
rm script
AT_DATA_M4SH([script.as],
[[AS_INIT
m4_define([gone], [AS_ERROR([really])])
m4_define([AS_MESSAGE_LOG_FD], [5])
exec AS_MESSAGE_LOG_FD>log.txt
AS_WARN([*watch out*])dnl

if test x"$die" != x; then
  AS_ERROR([you're dead])dnl

  AS_ERROR([really])dnl

fi
echo got here
exec AS_MESSAGE_LOG_FD>&-
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [],
[[got here
]], [[script: WARNING: *watch out*
]])
AT_CHECK([[grep 'script:[0-9]*: WARNING: \*watch out\*' log.txt]], [], [ignore])
AT_CHECK([die=: $CONFIG_SHELL ./script], [1],
[], [[script: WARNING: *watch out*
script: error: you're dead
]])
AT_CHECK([[grep 'script:[0-9]*: WARNING: \*watch out\*' log.txt]], [], [ignore])
AT_CHECK([[grep 'script:[0-9]*: error: you'\''re dead' log.txt]], [], [ignore])

AT_CLEANUP

## ---------------- ##
## LINENO support.  ##
## ---------------- ##

AT_SETUP([LINENO])
AT_KEYWORDS([m4sh])

# We cannot unset LINENO with Zsh, yet this test case relies on
# unsetting LINENO to compare its result when (i) LINENO is supported
# and when (ii) it is not.
# So just skip if the shell is ZSH.
AT_CHECK([test ${ZSH_VERSION+y} && exit 77], ignore)

# AT_DATA_LINENO(FILE-NAME,
#                UNSET-LINENO = true | false, COUNTER, COUNTER-RE)
# ----------------------------------------------------------------
# Produce the FILE-NAME M4sh script which uses the COUNTER LINENO or
# _oline_, which we can recognized via COUNTER-RE.  Unset LINENO is
# UNSET-LINENO.
#
# Use COUNTER, COUNTER-RE = [__LINENO__], [LINENO]
#  or                     = [__OLINE__],  [_oline__]
#
# instead of the obvious $LINENO and __oline@&t@__, because they would
# be replaced in the test suite itself, even before creating these
# scripts.  For the same reason, grep for LINENO and _oline__ (sic).
#
# UNSET-LINENO is a shell condition to make sure the scripts have the
# same number of lines in the output, so that their outputs be identical.
m4_define([AT_DATA_LINENO],
[AT_DATA([$1.tas],
[[AS@&t@_INIT
m4@&t@_divert_text([], [
if $2; then
  AS@&t@_UNSET([LINENO])
fi
])
AS@&t@_LINENO_PREPARE
echo "Line: $3"
grep 'Line: .*$4' "$[0]" >/dev/null ||
  AS@&t@_ERROR([cannot find original script])
exit 0
]])
# If occurrences of $LINENO or __@&t@oline__ were wanted, create them.
sed 's/__LINENO__/$''LINENO/g;s/__OLINE__/__''oline__/g' $1.tas >$1.as
AT_CHECK([autom4te -l m4sh $1.as -o $1])
])# AT_DATA_LINENO

# `_oline_', once processed and ran, produces our reference.
# We check that we find ourselves by looking at a string which is
# available only in the original script: `_oline_'.
AT_DATA_LINENO([reference], [true], [__OLINE__], [_oline__])
AT_CHECK([./reference], 0, [stdout])

# The reference:
mv stdout expout

# Now using a maybe-functioning LINENO, with different call conventions.
# Be sure to be out of the PATH.
AT_CHECK([mkdir test || exit 77])

AT_DATA_LINENO([test/test-1], [true], [__LINENO__], [LINENO])
AT_CHECK([./test/test-1],                          0, [expout])
AT_CHECK([(PATH=test$PATH_SEPARATOR$PATH; export PATH; exec test-1)],
						   0, [expout])
AT_CHECK([sh ./test/test-1],                       0, [expout])

# Now using a disabled LINENO, with different call conventions.
AT_DATA_LINENO([test/test-2], [true], [__LINENO__], [LINENO])
AT_CHECK([./test/test-2],                          0, [expout])
AT_CHECK([(PATH=test$PATH_SEPARATOR$PATH; export PATH; exec test-2)],
						   0, [expout])
AT_CHECK([sh ./test/test-2],                       0, [expout])

AT_CLEANUP


## ---------------------- ##
## LINENO stack support.  ##
## ---------------------- ##

AT_SETUP([LINENO stack])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT

AS_LINENO_PUSH([9999])
test $as_lineno = 9999 || AS_ERROR([bad as_lineno at depth 1])
AS_LINENO_PUSH([8888])
test $as_lineno = 9999 || AS_ERROR([bad as_lineno at depth 2])
AS_LINENO_POP
test $as_lineno = 9999 || AS_ERROR([bad as_lineno at depth 1])
AS_LINENO_POP
test ${as_lineno+y} && AS_ERROR([as_lineno set at depth 0])

AS_EXIT([0])
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP


## -------- ##
## AS_BOX.  ##
## -------- ##

# Output a framed one-line message.
AT_SETUP([AS@&t@_BOX])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT
echo
AS_BOX([Send a simple message, to foobar@example.com])
AS_BOX([Send a simple message, to foobar@example.com], [$])
m4_define([msg], [$complex])
complex='Not quite as simple |$[1]'
AS_BOX([msg])
AS_BOX([msg], [,])
AS_EXIT(0)
]])

AT_CHECK_M4SH
AT_CHECK([sed -n '/ -\{44\} /,/ -\{44\} /p' script ]dnl
[| sed '1 s/.*## -/## -/; 3 s/- ##.*/- ##/'], [],
[[## -------------------------------------------- ##
## Send a simple message, to foobar@example.com ##
## -------------------------------------------- ##
]])

AT_CHECK([$CONFIG_SHELL ./script], [], [[
## -------------------------------------------- ##
## Send a simple message, to foobar@example.com ##
## -------------------------------------------- ##
## $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ ##
## Send a simple message, to foobar@example.com ##
## $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ ##
## ----------------------- ##
## Not quite as simple |$1 ##
## ----------------------- ##
## ,,,,,,,,,,,,,,,,,,,,,,, ##
## Not quite as simple |$1 ##
## ,,,,,,,,,,,,,,,,,,,,,,, ##
]])

AT_CLEANUP


# Strip path from file.
AT_SETUP([AS@&t@_BASENAME])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT

m4_define([BASENAME_TEST],
[base=`AS_BASENAME([$1])`
test "$base" = "$2" ||
  echo "basename($1) = $base instead of $2" >&2

base=`_AS_BASENAME_SED([$1])`
test "$base" = "$2" ||
  echo "basename_sed($1) = $base instead of $2" >&2])

BASENAME_TEST([//1],             [1])
BASENAME_TEST([/1],              [1])
BASENAME_TEST([./1],             [1])
BASENAME_TEST([../../2],         [2])
BASENAME_TEST([//1/],            [1])
BASENAME_TEST([/1/],             [1])
BASENAME_TEST([./1/],            [1])
BASENAME_TEST([../../2],         [2])
BASENAME_TEST([//1/3],           [3])
BASENAME_TEST([/1/3],            [3])
BASENAME_TEST([./1/3],           [3])
BASENAME_TEST([../../2/3],       [3])
BASENAME_TEST([//1/3///],        [3])
BASENAME_TEST([/1/3///],         [3])
BASENAME_TEST([./1/3///],        [3])
BASENAME_TEST([../../2/3///],    [3])
BASENAME_TEST([//1//3/],         [3])
BASENAME_TEST([/1//3/],          [3])
BASENAME_TEST([./1//3/],         [3])
BASENAME_TEST([a.c],             [a.c])
BASENAME_TEST([a.c/],            [a.c])
BASENAME_TEST([/a.c/],           [a.c])
BASENAME_TEST([/1/a.c],          [a.c])
BASENAME_TEST([/1/a.c/],         [a.c])
BASENAME_TEST([/1/../a.c],       [a.c])
BASENAME_TEST([/1/../a.c/],      [a.c])
BASENAME_TEST([./1/a.c],         [a.c])
BASENAME_TEST([./1/a.c/],        [a.c])
AS_EXIT(0)
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP


## ------------ ##
## AS_DIRNAME.  ##
## ------------ ##

# Strip filename component.
AT_SETUP([AS@&t@_DIRNAME])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT

# The EXPR variant is allowed to fail if `expr' was considered as too
# weak for us, in which case `as_expr=false'.
m4_define([DIRNAME_TEST],
[dir=`AS_DIRNAME([$1])`
test "$dir" = "$2" || (test -n "$3" && test "$dir" = "$3") ||
  echo "dirname($1) = $dir instead of $2" >&2

if test "$as_expr" != false; then
  dir=`_AS_DIRNAME_EXPR([$1])`
  test "$dir" = "$2" || (test -n "$3" && test "$dir" = "$3") ||
    echo "dirname_expr($1) = $dir instead of $2" >&2
fi

dir=`_AS_DIRNAME_SED([$1])`
test "$dir" = "$2" || (test -n "$3" && test "$dir" = "$3") ||
  echo "dirname_sed($1) = $dir instead of $2" >&2])

DIRNAME_TEST([/],		[/])
DIRNAME_TEST([//],		[//],	[/])
DIRNAME_TEST([///],		[/])
DIRNAME_TEST([//1],		[//],	[/])
DIRNAME_TEST([/1],		[/])
DIRNAME_TEST([./1],		[.])
DIRNAME_TEST([../../2],		[../..])
DIRNAME_TEST([//1/],		[//],	[/])
DIRNAME_TEST([/1/],		[/])
DIRNAME_TEST([./1/],		[.])
DIRNAME_TEST([../../2],		[../..])
DIRNAME_TEST([//1/3],		[//1])
DIRNAME_TEST([/1/3],		[/1])
DIRNAME_TEST([./1/3],		[./1])
DIRNAME_TEST([../../2/3],	[../../2])
DIRNAME_TEST([//1/3///],	[//1])
DIRNAME_TEST([/1/3///],		[/1])
DIRNAME_TEST([./1/3///],	[./1])
DIRNAME_TEST([../../2/3///],	[../../2])
DIRNAME_TEST([//1//3/],		[//1])
DIRNAME_TEST([/1//3/],		[/1])
DIRNAME_TEST([./1//3/],		[./1])
DIRNAME_TEST([../../2//3/],	[../../2])
AS_EXIT(0)
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP


## ---------------- ##
## AS_SET_CATFILE.  ##
## ---------------- ##

AT_SETUP([AS@&t@_SET_CATFILE])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT

# CATFILE_TEST(DIR, FILE, EXPECTED)
m4_define([CATFILE_TEST],
[# AS_SET_CATFILE works and can be used in a compound list.
if AS_SET_CATFILE([var], [$1], [$2]) \
   && test "$var" = $3; then :; else
  echo "catfile($1, $2) = $var != $3" >&2
fi
# AS_SET_CATFILE can use non-literals in its arguments.
varname=var2
dirpart=$1
filepart=$2
if AS_SET_CATFILE([$varname], [$dirpart], [$filepart]) \
   && test "$var2" = $3; then :; else
  echo "catfile($dirpart, $filepart) = $var2 != $3" >&2
fi
])

CATFILE_TEST([dir], [file], [dir/file])
CATFILE_TEST([.], [file], [file])
CATFILE_TEST([dir], [.], [dir])
CATFILE_TEST([dir], [/abs/file], [/abs/file])
CATFILE_TEST([dir], [C:/abs/file], [C:/abs/file])
CATFILE_TEST(["dir  name"], ['file  name'], ['dir  name/file  name'])

AS_EXIT(0)
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP


## --------- ##
## AS_ECHO.  ##
## --------- ##

# Print literal strings, with/without newline.
AT_SETUP([AS@&t@_ECHO and AS@&t@_ECHO_N])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT

m4_define([ECHO_TEST],
[echo=`AS_ECHO(['$1'])`
test "X$echo" = 'X$1' ||
  echo "AS@&t@_ECHO('"'$1'"') outputs '$echo'" >&2

echo=`AS_ECHO_N(['$1'])`
test "X$echo" = 'X$1' ||
  echo "AS@&t@_ECHO_N('"'$1'"') outputs '$echo'" >&2])

ECHO_TEST([-])
ECHO_TEST([--])
ECHO_TEST([---...---])
ECHO_TEST([	 ])
ECHO_TEST([-e])
ECHO_TEST([-E])
ECHO_TEST([-n])
ECHO_TEST([-n -n])
ECHO_TEST([-e -n])
ECHO_TEST([ab\ncd])
ECHO_TEST([abcd\c])
ECHO_TEST([\a\b\c\f\n\r\t\v\"\])
ECHO_TEST([ab
cd
e])
ECHO_TEST([
 ])
ECHO_TEST([
\c])
AS_EXIT(0)
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP

# Obsolete shell variables with the same functionality as above.
AT_SETUP([obsolete $as@&t@_echo and $as@&t@_echo_n])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT
AS_REQUIRE([_AS_ECHO_N_PREPARE])

m4_define([ECHO_TEST],
[echo=`$as_echo '$1'`
test "X$echo" = 'X$1' ||
  echo "\$as@&t@_echo '$1' outputs '$echo'" >&2

echo=`$as_echo_n '$1'`
test "X$echo" = 'X$1' ||
  echo "\$as@&t@_echo_n '$1' outputs '$echo'" >&2])

ECHO_TEST([-])
ECHO_TEST([--])
ECHO_TEST([---...---])
ECHO_TEST([	 ])
ECHO_TEST([-e])
ECHO_TEST([-E])
ECHO_TEST([-n])
ECHO_TEST([-n -n])
ECHO_TEST([-e -n])
ECHO_TEST([ab\ncd])
ECHO_TEST([abcd\c])
ECHO_TEST([\a\b\c\f\n\r\t\v\"\])
ECHO_TEST([ab
cd
e])
ECHO_TEST([
 ])
ECHO_TEST([
\c])
AS_EXIT(0)
]])

AT_CHECK_M4SH([], 0, [],
[[script.as:13: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:13: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:14: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:14: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:15: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:15: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:16: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:16: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:17: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:17: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:18: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:18: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:19: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:19: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:20: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:20: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:21: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:21: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:22: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:22: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:23: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:23: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:24: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:24: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:25: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:25: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:28: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:28: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
script.as:30: warning: $as@&t@_echo is obsolete; use AS@&t@_ECHO(["message"]) instead
script.as:30: warning: $as@&t@_echo_n is obsolete; use AS@&t@_ECHO_N(["message"]) instead
]])
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP


## ------------------------------ ##
## Redefining AS_ECHO internals.  ##
## ------------------------------ ##

AT_SETUP([Redefining AS@&t@_ECHO internals])

# None of the tests below do any AC_DEFINEs, so running autoheader is
# a waste of time, but the skeleton generated by AT_CONFIGURE_AC needs
# this file to exist anyway.
AT_DATA([config.hin])

# Defining a macro named `s' or `n' should not affect AS_ECHO or
# macros that use it.

AT_CONFIGURE_AC(
[[m4@&t@_pushdef([s], [z])
m4@&t@_pushdef([n], [u])
AC_MSG_NOTICE([checking whether m4sugar echo works... yes])
AC_MSG_CHECKING([whether m4sugar echo_n works])
AC_MSG_RESULT([yes])
m4@&t@_popdef([s])
m4@&t@_popdef([n])
]])

AT_CHECK_AUTOCONF
AT_CHECK_CONFIGURE([], [],
[[configure: checking whether m4sugar echo works... yes
checking whether m4sugar echo_n works... yes
configure: creating ./config.status
config.status: creating config.h
]], [])
AT_CHECK_ENV
rm config.h

# More elaborate version of the above; derived from actual code in
# ruby 2.7.2's configure script.

AT_CONFIGURE_AC(
[[AC@&t@_DEFUN([RUBY_CHECK_SIZEOF],[
AS@&t@_VAR_PUSHDEF([s], [ac_cv_sizeof_size])
AC@&t@_CACHE_CHECK([size of $1],
    [AS@&t@_TR_SH([ac_cv_sizeof_$1])],
    [AS@&t@_TR_SH(ac_cv_sizeof_$1)=1])

# fake use of 's' for illustratve purposes:
s=42
echo "s is defined as ${s}"

AS@&t@_VAR_POPDEF([s])
])

RUBY_CHECK_SIZEOF(int)
echo "ac_cv_sizeof_int=${ac_cv_sizeof_int}"
]])

AT_CHECK_AUTOCONF
AT_CHECK_CONFIGURE([], [],
[[checking size of int... 1
ac_cv_sizeof_size is defined as 42
ac_cv_sizeof_int=1
configure: creating ./config.status
config.status: creating config.h
]], [])
AT_CHECK_ENV
rm config.h

# However, defining a macro named `printf' _is_ expected to affect
# the functioning of AS_ECHO.

AT_CONFIGURE_AC(
[[# At this point in a configure script, defining shell functions is safe.
fn_printf_override () {
  for arg; do
    printf '+ %s\n' "$arg"
  done
  AS@&t@_UNSET([arg])
}
m4@&t@_pushdef([printf], [fn_printf_override])
AC_MSG_NOTICE([checking whether m4sugar echo works... yes])
AC_MSG_CHECKING([whether m4sugar echo_n works])
AC_MSG_RESULT([yes])
m4@&t@_popdef([printf])
]])

AT_CHECK_AUTOCONF
AT_CHECK_CONFIGURE([], [],
[[+ %s\n
+ configure: checking whether m4sugar echo works... yes
+ %s
+ checking whether m4sugar echo_n works... @&t@
+ %s\n
+ yes
configure: creating ./config.status
config.status: creating config.h
]], [])
AT_CHECK_ENV

AT_CLEANUP


## ----------------- ##
## AS_EXECUTABLE_P.  ##
## ----------------- ##

# Check for executable regular files.
AT_SETUP([AS@&t@_EXECUTABLE_P])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT

if AS_EXECUTABLE_P([/]); then
  echo fail
else
  echo 1
fi
cat > foo.sh <<\EOF || AS_EXIT([1])
#!/bin/sh
exit 0
EOF
# File systems like FAT tend to fake executable permissions on all files.
# At this point, foo.sh should be executable iff permissions are faked.
AS_EXECUTABLE_P([foo.sh])
st1=$?
(./foo.sh) >/dev/null 2>&1
st2=$?
case $st1:$st2 in
  *[[1-9]]*:*[[1-9]]* | 0:0 ) echo 2 ;;
  *) echo "fail ($st1:$st2)" ;;
esac
# Now things better be executable
chmod a+x foo.sh || AS_EXIT([2])
mkdir 'two  spaces' || AS_EXIT([3])
'two  spaces'/../foo.sh || AS_EXIT([4])
if AS_EXECUTABLE_P(["two  spaces/../foo.sh"]); then
  echo 3
else
  echo fail
fi
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [],
[[1
2
3
]])

AT_CLEANUP



## --------- ##
## AS_EXIT.  ##
## --------- ##

# Exit scripts with given status.
AT_SETUP([AS@&t@_EXIT])
AT_KEYWORDS([m4sh AS@&t@_SET_STATUS])

AT_DATA_M4SH([script.as],
[[AS_INIT
test x${1} = xa && AS_EXIT
test x${1} = xb && AS_EXIT([${2}])
test x${1} = xc && { AS_SET_STATUS([${2}]); AS_EXIT; }
test x${1} = xd && trap 's=$?; echo $s; AS_EXIT([$s])' 0
test x${2} = xe && set -e
test $[#] -gt 0 || AS_EXIT
AS_SET_STATUS([3])
dnl Solaris /bin/sh 'set -e' doesn't react to failed function calls
test x${2} = xe \
  && { echo 'skipping rest of test: set -e support is lousy'; exit 77; }
AS_SET_STATUS([4])
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [1])
AT_CHECK([$CONFIG_SHELL ./script ''], [4])
AT_CHECK([$CONFIG_SHELL ./script a], [0])
AT_CHECK([$CONFIG_SHELL ./script b], [0])
AT_CHECK([$CONFIG_SHELL ./script b 0], [0])
AT_CHECK([$CONFIG_SHELL ./script b 2], [2])
AT_CHECK([$CONFIG_SHELL ./script c 0], [0])
AT_CHECK([$CONFIG_SHELL ./script c 2], [2])
AT_CHECK([$CONFIG_SHELL ./script d], [4], [[4
]])
dnl If we got to this point without a FAIL, then AS_EXIT at least works.
dnl The rest of this test relies on semi-decent 'set -e' support, even
dnl though m4sh in general should not try to rely on it because of
dnl portability nightmares on what constructs are considered errors across
dnl various shells; therefore, an overall SKIP result is desirable on
dnl broken shells like Solaris /bin/sh.
AT_CHECK([$CONFIG_SHELL ./script '' e], [3])
AT_CHECK([$CONFIG_SHELL ./script d e], [3], [stdout])
dnl NetBSD sh fails to output on stderr here.
AT_CHECK([grep 3 stdout || exit 77], [], [ignore])

AT_CLEANUP



## ------------ ##
## AS_MKDIR_P.  ##
## ------------ ##

# Build nested dirs.
AT_SETUP([AS@&t@_MKDIR_P])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT

pwd=`pwd`
set -e
# Absolute
AS_MKDIR_P(["$pwd/1/2/3/4/5/6"])
test -d "$pwd/1/2/3/4/5/6" ||
  AS_ERROR([$pwd/1/2/3/4/5/6 has not been properly created])
# Relative
AS_MKDIR_P(["a/b/c/d/e/f"])
test -d a/b/c/d/e/f ||
  AS_ERROR([a/b/c/d/e/f has not been properly created])
AS_EXIT(0)
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP




## -------------------- ##
## AS_VERSION_COMPARE.  ##
## -------------------- ##

# Three-way version comparison.
AT_SETUP([AS@&t@_VERSION_COMPARE])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT

m4_define([VERSION_COMPARE_TEST],
[AS_VERSION_COMPARE([$1], [$3], [result='<'], [result='='], [result='>'])
test "X$result" = "X$2" ||
  AS_ERROR([version $1 $result $3; should be $1 $2 $3])
m4_if([$1], <,
[AS_VERSION_COMPARE([$3], [$1], [result='<'], [result='='], [result='>'])
test "X$result" = "X>" ||
  AS_ERROR([version $3 $result $1; should be $3 > $1])])])

VERSION_COMPARE_TEST([], =, [])
VERSION_COMPARE_TEST([1.0], =, [1.0])
VERSION_COMPARE_TEST([alpha-1.0], =, [alpha-1.0])

# These tests are taken from libc/string/tst-svc.expect.
tst_svc_expect='
  000 001 00 00a 01 01a 0 0a 2.8 2.8-0.4 20 21 22 212 CP037 CP345 CP1257
  foo foo-0.4 foo-0.4a foo-0.4b foo-0.5 foo-0.10.5 foo-3.01 foo-3.0
  foo-3.0.0 foo-3.0.1 foo-3.2 foo-3.10 foo00 foo0
'
test1=''
for test2 in $tst_svc_expect; do
  VERSION_COMPARE_TEST([$test1], <, [$test2])
  test1=$test2
done

AS_EXIT(0)
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP




## ------- ##
## as_me.  ##
## ------- ##

AT_SETUP([as_me])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT
AS_ME_PREPARE
test "$as_me" = script || AS_ECHO([["incorrect value of \$as_me: $as_me"]])
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP




## ----------------------------- ##
## Negated classes in globbing.  ##
## ----------------------------- ##

# According to https://www.in-ulm.de/~mascheck/bourne/, all shells with
# functions also support `[!...]'.  But `[^...]' is not universally supported.

AT_SETUP([Negated classes in globbing])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT

case 'with!two!bangs' in
  *[[!a-z]]*) ;;
           *) AS_ERROR([[`*[!a-z]*' didn't match `with!two!bangs']]);;
esac

case without in
  *[[!a-z]]*) AS_ERROR([[`*[!a-z]*' matched `without']]);;
esac
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP

## ---------------------------- ##
## Null variable substitution.  ##
## ---------------------------- ##

# According to https://www.in-ulm.de/~mascheck/bourne/, all shells with
# functions also support `${a:-b}'.

AT_SETUP([Null variable substitution])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT

AS_UNSET([a])
b=
c=.
case ${a:-x}${b:-y}${c:-z} in
  xy.) ;;
  *) exit 1 ;;
esac
case ${a-x}${b-y}${c-z} in
  x.) ;;
  *) exit 2 ;;
esac

case ${a+x}${b+y}${c+z} in
  yz) ;;
  *) exit 3 ;;
esac
case ${a:+x}${b:+y}${c:+z} in
  z) ;;
  *) exit 4 ;;
esac

case ${a=x}${b=y}${c=z} in
  x.) ;;
  *) exit 5 ;;
esac
AS_UNSET([a])
case ${a:=x}${b:=y}${c:=z} in
  xy.) ;;
  *) exit 6 ;;
esac
case $a$b$c in
  xy.) ;;
  *) exit 7 ;;
esac
AS_UNSET([a])
b=

(: ${a?oops}; echo fail) 2>err && exit 8
grep oops err >/dev/null || exit 9
test "${b?oops}" = '' || exit 10
test "${c?oops}" = . || exit 11
(: ${a:?oops}; echo fail) 2>err && exit 12
grep oops err >/dev/null || exit 13
(: ${b:?oops}; echo fail) 2>err && exit 14
grep oops err >/dev/null || exit 15
test "${c:?oops}" = . || exit 16
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP


## ------------------- ##
## Functions Support.  ##
## ------------------- ##

# All m4sh scripts require function support.

AT_SETUP([Functions Support])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT
AS_LINENO_PREPARE

func_return () {
  (exit $1)
}

func_success () {
  func_return 0
}

func_failure () {
  func_return 1
}

if func_success; then
  if func_failure; then
    AS_ERROR([func_failure passed])
  fi
else
  AS_ERROR([func_success failed])
fi
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP




## ------------------------------ ##
## Functions and return Support.  ##
## ------------------------------ ##

# All m4sh scripts require working return within functions.

AT_SETUP([Functions and return Support])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as],
[[AS_INIT
AS_LINENO_PREPARE

func_success () {
  return 0
}

func_failure () {
  return 1
}

if func_success; then
  if func_failure; then
    AS_ERROR([func_failure passed])
  fi
else
  AS_ERROR([func_success failed])
fi
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP


## --------------------------- ##
## Nested AS_REQUIRE_SHELL_FN. ##
## --------------------------- ##

# Hypothesis: M4sh expands nested AS_REQUIRE_SHELL_FN
# separately.

AT_SETUP([Nested AS@&t@_REQUIRE_SHELL_FN])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as], [[dnl
m4_define([INIT], [oops])dnl
AS_INIT

m4_defun([TEST_FUNC2_BODY], [
:
])

m4_defun([TEST_FUNC1_BODY], [
AS_REQUIRE_SHELL_FN([test_func2], [], [TEST_FUNC2_BODY])
:
])

AS_REQUIRE_SHELL_FN([test_func1], [], [TEST_FUNC1_BODY])
test_func2
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP


## ------------------- ##
## Nested AS_REQUIRE.  ##
## ------------------- ##

# Hypothesis: M4sh expands the requirements of AS_REQUIRE in the
# requested diversion, even if other AS_REQUIREs are interleaved.

AT_SETUP([Nested AS@&t@_REQUIRE])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as], [[dnl
AS_INIT

m4_defun([in_fn_diversion], still_in_m4sh_init_fn=yes)
m4_defun([not_in_fn_diversion], still_in_m4sh_init_fn=no)

m4_defun([NESTED], [nested_require_in_fn_diversion=$still_in_m4sh_init_fn])

m4_defun([OUTER], [AS_REQUIRE([NESTED])dnl
outer_require_in_fn_diversion=$still_in_m4sh_init_fn])

m4_defun([test_init], [
AS_REQUIRE([in_fn_diversion], , [M4SH-INIT-FN])
AS_REQUIRE([OUTER], , [M4SH-INIT-FN])
AS_REQUIRE([not_in_fn_diversion], , [M4SH-INIT-FN])
])

test_init
if test $outer_require_in_fn_diversion != yes; then AS_EXIT([1]); fi
if test $nested_require_in_fn_diversion != no; then AS_EXIT([1]); fi
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP


## ------------------------------------ ##
## AS_REQUIRE_SHELL_FN and m4_require.  ##
## ------------------------------------ ##

# Hypothesis: M4sh expands the requirements of AS_REQUIRE_SHELL_FN
# in M4SH-INIT-FN.  This changed after Autoconf 2.63.

AT_SETUP([AS@&t@_REQUIRE_SHELL_FN and m4@&t@_require])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as], [[dnl
AS_INIT

m4_defun([in_m4_sh_init], still_in_m4sh_init=yes)
m4_defun([not_in_m4_sh_init], still_in_m4sh_init=no)

m4_defun([error_if_emitted_in_m4sh_init], [
  if test x$still_in_m4sh_init = xyes; then
    AS_ERROR([requirement emitted in M4SH-INIT])
  fi
])

m4_defun([TEST_FUNC_BODY], [
m4_require([error_if_emitted_in_m4sh_init])
: echo in shell function, with parameter = [$]1
])


m4_defun([test_init], [
AS_REQUIRE([in_m4_sh_init], , [M4SH-INIT-FN])
AS_REQUIRE_SHELL_FN([test_func], [], [TEST_FUNC_BODY])
AS_REQUIRE([not_in_m4_sh_init])
])

test_init
test_func parameter1
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP


## -------------- ##
## AS_HELP_STRING ##
## -------------- ##

AT_SETUP([AS@&t@_HELP_STRING])
AT_KEYWORDS([m4sh m4@&t@_text_wrap m4@&t@_expand])

AT_DATA_M4SH([script.as],
[[AS_INIT

echo "AS_HELP_STRING([--an-option],[some text])"
echo "AS_HELP_STRING([--another-much-longer-option],
[some other text which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([--fooT=barT], [foo bar])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@], [foo bar])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@123456789], [foo bar])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@1234567890], [foo bar])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@12345678901], [foo bar])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@123456789012], [foo bar])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@1234567890123], [foo bar])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@],
[some other text which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@123456789],
[some other text which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@1234567890],
[some other text which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@12345678901],
[some other text which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@123456789012],
[some other text which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@1234567890123],
[some other text which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@],
[some other @<][:@ex@:][>@ which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@123456789],
[some other @<][:@ex@:][>@ which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@1234567890],
[some other @<][:@ex@:][>@ which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@12345678901],
[some other @<][:@ex@:][>@ which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@123456789012],
[some other @<][:@ex@:][>@ which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([--foo@<][:@=bar@:][>@1234567890123],
[some other @<][:@ex@:][>@ which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([[--foo[=bar]]],
[some other t[]t which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([[--foo[=bar]123456789]],
[some other t[]t which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([[--foo[=bar]1234567890]],
[some other t[]t which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([[--foo[=bar]12345678901]],
[some other t[]t which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([[--foo[=bar]123456789012]],
[some other t[]t which should wrap at our default of 80 characters.])"
echo "AS_HELP_STRING([[--foo[=bar]1234567890123]],
[some other t[]t which should wrap at our default of 80 characters.])"
m4_define([mac], [MACRO])dnl
echo "AS_HELP_STRING([--mac], [mac])"
echo "AS_HELP_STRING([--o1, --o2], [two
options,	one  description])"
echo "AS_HELP_STRING([[[--o3, --o4]]], [comma inside literal quoting])"
echo "AS_HELP_STRING([--tune1], [check out the tuned formatting],
[            ])"
echo "AS_HELP_STRING([--tune2], [check out the tuned formatting],
[12])"
echo "AS_HELP_STRING([--tune3], [check out the tuned formatting],
[], [40])"
echo "AS_HELP_STRING([--tune4], [check out the tuned formatting],
[12], [40])"
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [0],
[[  --an-option             some text
  --another-much-longer-option
                          some other text which should wrap at our default of
                          80 characters.
  --fooT=barT             foo bar
  --foo[=bar]             foo bar
  --foo[=bar]123456789    foo bar
  --foo[=bar]1234567890   foo bar
  --foo[=bar]12345678901  foo bar
  --foo[=bar]123456789012 foo bar
  --foo[=bar]1234567890123
                          foo bar
  --foo[=bar]             some other text which should wrap at our default of
                          80 characters.
  --foo[=bar]123456789    some other text which should wrap at our default of
                          80 characters.
  --foo[=bar]1234567890   some other text which should wrap at our default of
                          80 characters.
  --foo[=bar]12345678901  some other text which should wrap at our default of
                          80 characters.
  --foo[=bar]123456789012 some other text which should wrap at our default of
                          80 characters.
  --foo[=bar]1234567890123
                          some other text which should wrap at our default of
                          80 characters.
  --foo[=bar]             some other [ex] which should wrap at our default of
                          80 characters.
  --foo[=bar]123456789    some other [ex] which should wrap at our default of
                          80 characters.
  --foo[=bar]1234567890   some other [ex] which should wrap at our default of
                          80 characters.
  --foo[=bar]12345678901  some other [ex] which should wrap at our default of
                          80 characters.
  --foo[=bar]123456789012 some other [ex] which should wrap at our default of
                          80 characters.
  --foo[=bar]1234567890123
                          some other [ex] which should wrap at our default of
                          80 characters.
  --foo[=bar]             some other t[]t which should wrap at our default of
                          80 characters.
  --foo[=bar]123456789    some other t[]t which should wrap at our default of
                          80 characters.
  --foo[=bar]1234567890   some other t[]t which should wrap at our default of
                          80 characters.
  --foo[=bar]12345678901  some other t[]t which should wrap at our default of
                          80 characters.
  --foo[=bar]123456789012 some other t[]t which should wrap at our default of
                          80 characters.
  --foo[=bar]1234567890123
                          some other t[]t which should wrap at our default of
                          80 characters.
  --MACRO                 mac
  --o1, --o2              two options, one description
  [--o3, --o4]            comma inside literal quoting
  --tune1   check out the tuned formatting
  --tune2   check out the tuned formatting
  --tune3                 check out the
                          tuned
                          formatting
  --tune4   check out the tuned
            formatting
]])

AT_CLEANUP


## ------------------- ##
## AS_IF and AS_CASE.  ##
## ------------------- ##

AT_SETUP([AS@&t@_IF and AS@&t@_CASE])
AT_KEYWORDS([m4sh m4@&t@_map_args_pair])

AT_DATA_M4SH([script.as], [[dnl
AS_INIT
# Syntax checks: cope with empty arguments.
AS_IF([:], [], [echo wrong])
AS_IF([:], [echo one], [echo wrong])
AS_IF([false], [echo wrong], [echo two])
AS_IF([false], [echo wrong])
# n-ary version
AS_IF([false], [echo wrong],
      [:], [echo three])
AS_IF([false], [echo wrong],
      [:], [echo four],
      [echo wrong])
AS_IF([false], [echo wrong],
      [false], [echo wrong])
AS_IF([false], [echo wrong],
      [false], [echo wrong],
      [echo five])
AS_IF([false], [echo wrong],
      [false], [echo wrong],
      [:], [echo six],
      [echo wrong])
AS_CASE([foo])
AS_CASE([foo], [echo seven])
AS_CASE([foo],
        [foo], [echo eight],
        [echo wrong])
AS_CASE([foo],
        [foo], [echo nine],
        [*],   [echo wrong])
AS_CASE([foo],
        [bar], [echo wrong],
        [foo], [echo ten],
        [*],   [echo wrong])

# check for nesting, lists, and side effects, and quoting robustness
empty=
AS_IF([AS_IF([$empty], [echo eleven])]) && AS_CASE([foo]) && echo twelve
rm -f file
AS_IF([touch file; false]) && echo thirteen
test -f file && echo fourteen
rm -f file
AS_CASE([`touch file; false`]) && test -f file && echo fifteen
dnl The next line is badly underquoted; don't intentionally copy this style.
AS_CASE([foo], [foo], m4_do(AS_CASE([bar], [bar], [echo sixteen])))
dnl Handle blank arguments.
AS_IF([false], [:], [ ]) && AS_CASE([foo], [foo], []
) && echo seventeen
m4_define([empty])AS_IF([:], [empty]
) && AS_IF([false], [], [empty]
) || AS_CASE([foo], [foo], [empty]) && echo eighteen
dnl Allow for users that don't know to avoid trailing whitespace
AS_IF([:
], [echo nineteen])

# check that require works correctly
m4_for([n], 1, 9, [],
[m4_defun([FOO]n, [foo]n[=]n)dnl
m4_defun([BAR]n,
	 [m4_require([FOO]]n[)dnl
bar]n[=]n)[]dnl
])

AS_IF([:], [BAR1])
echo "foo1=$foo1 bar1=$bar1"
AS_IF([:], [], [BAR2])
echo "foo2=$foo2 bar2=$bar2"
AS_IF([false], [BAR3])
echo "foo3=$foo3 bar3=$bar3"
AS_IF([false], [], [BAR4])
echo "foo4=$foo4 bar4=$bar4"
AS_CASE([x], [x], [BAR5])
echo "foo5=$foo5 bar5=$bar5"
AS_CASE([x], [y], [BAR6])
echo "foo6=$foo6 bar6=$bar6"
AS_CASE([x],
	[x], [:],
	[BAR7])
echo "foo7=$foo7 bar7=$bar7"
AS_CASE([x],
	[y], [:],
	[BAR8])
echo "foo8=$foo8 bar8=$bar8"
AS_CASE([x],
	[y], [:],
	[x], [BAR9])
echo "foo9=$foo9 bar9=$bar9"
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [0], [[one
two
three
four
five
six
seven
eight
nine
ten
eleven
twelve
thirteen
fourteen
fifteen
sixteen
seventeen
eighteen
nineteen
foo1=1 bar1=1
foo2=2 bar2=
foo3=3 bar3=
foo4=4 bar4=4
foo5=5 bar5=5
foo6=6 bar6=
foo7=7 bar7=
foo8=8 bar8=8
foo9=9 bar9=9
]])

dnl stress test for large number of conditionals
dnl too large, and we start tickling shell bugs
m4_pushdef([limit], [1000])dnl
AT_DATA_M4SH([script.as], [[dnl
AS_INIT
AS_IF(m4_shift(m4_for([i], [1], ]limit[, [], [, test $[1] = i, echo i])))
AS_IF(m4_shift(m4_for([i], [1], ]limit[, [], [, test $[1] = i, echo i])),
      [echo default])
AS_CASE([$[1]]m4_for([i], [1], ]limit[, [], [, i, echo i]))
AS_CASE([$[1]]m4_for([i], [1], ]limit[, [], [, i, echo i]), [echo default])
]])

dnl Add --force so autom4te doesn't think `script' is still up to date.
AT_CHECK_M4SH([--force])
AT_CHECK([$CONFIG_SHELL ./script 1], [0], [[1
1
1
1
]])
AT_CHECK([$CONFIG_SHELL ./script limit], [0], [limit
limit
limit
limit
])
AT_CHECK([$CONFIG_SHELL ./script default], [0], [[default
default
]])
m4_popdef([limit])

AT_CLEANUP


## -------- ##
## AS_FOR.  ##
## -------- ##

AT_SETUP([AS@&t@_FOR])
AT_KEYWORDS([m4sh])

AT_DATA_M4SH([script.as], [[dnl
AS_INIT

# Simple checks.
AS_FOR([m4var], [shvar], [a],
[echo "m4var $shvar"])
AS_FOR([m4var], [shvar], [b c],
[echo "m4var $shvar"])
list='d e'
AS_FOR([m4var], [shvar], [$list],
[echo "m4var $shvar"])
AS_FOR([m4var], [shvar], ["$list"],
[echo "m4var $shvar"])
AS_FOR([m4var], [shvar], ['$list'],
[echo "m4var $shvar"])
AS_FOR([m4var], [shvar], [\'],
[echo "m4var $shvar"])

# Syntax checks: cope with empty/blank arguments.
set f g
AS_FOR([], [shvar], [],
[echo "m4_defn([]) $shvar"])
rm -f file
AS_FOR([], [shvar], [`touch file`])
test -f file || exit 1
AS_FOR([], [shvar], [], [ ])
m4_define([empty])AS_FOR([], [shvar], [], [empty])

# Check that break works.
while :
do
  AS_FOR([m4var], [shvar], [h i],
    [echo "m4var"; break 2])
  exit 1
done
while :
do
  AS_FOR([m4var], [shvar], [j],
    [echo "m4var"; break 2])
  exit 1
done
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [0], [[a a
b b
c c
d d
e e
d e d e
$list $list
' '
f f
g g
h
j
]])

AT_CLEANUP


## --------------- ##
## AS_LITERAL_IF.  ##
## --------------- ##

AT_SETUP([AS@&t@_LITERAL_IF])
AT_KEYWORDS([m4sh AS@&t@_LITERAL_WORD_IF AS@&t@_LITERAL_HEREDOC_IF])

AT_DATA_M4SH([script.as], [[dnl
AS_INIT
echo AS_LITERAL_IF([lit], [ok], [ERR]) 1
echo AS_LITERAL_IF([l-/.it], [ok], [ERR]) 2
echo AS_LITERAL_IF([l''it], [ERR], [ok]) 3
echo AS_LITERAL_IF([l$it], [ERR], [ok]) 4
echo AS_LITERAL_IF([l$it], [ERR1], [ERR2], [ok]) 5
echo AS_LITERAL_IF([l${it}], [ERR1], [ERR2], [ok]) 6
echo AS_LITERAL_IF([l`case a in b) ;; esac`it], [ERR], [ok]) 7
echo AS_LITERAL_IF([l`case a in b) ;; esac`it], [ERR1], [ok], [ERR2]) 8
m4_define([mac], [l-/.it])
echo AS_LITERAL_IF([mac], [ok], [ERR]) 9
echo AS_LITERAL_IF([mac($, ``)], [ok], [ERR]) 10
m4_define([mac], [l$it])
echo AS_LITERAL_IF([mac], [ERR], [ok]) 11
echo AS_LITERAL_IF([mac], [ERR1], [ERR2], [ok]) 12
m4_define([mac], [l``it])
echo AS_LITERAL_IF([mac], [ERR], [ok]) 13
echo AS_LITERAL_IF([mac], [ERR1], [ok], [ERR2]) 14
echo AS_LITERAL_IF([	a ][
b], [ok], [ERR]) 15
echo AS_LITERAL_WORD_IF([	a ][
b], [ERR], [ok]) 16
echo AS_LITERAL_HEREDOC_IF([	a ][
b], [ok], [ERR]) 17
echo AS_LITERAL_IF([(a)], [ERR], [ok]) 18
echo AS_LITERAL_WORD_IF([(a)], [ERR], [ok]) 19
echo AS_LITERAL_HEREDOC_IF([(a)], [ok], [ERR]) 20
echo AS_LITERAL_IF([@S|@a], [ERR], [ok]) 21
echo AS_LITERAL_WORD_IF([@S|@a], [ERR], [ok]) 22
echo AS_LITERAL_HEREDOC_IF([@S|@a], [ERR], [ok]) 23
echo AS_LITERAL_IF([${a+b}], [ERR1], [ok], [ERR2]) 24
echo AS_LITERAL_IF([${a=b}], [ERR1], [ok], [ERR2]) 25
echo AS_LITERAL_IF([a+b], [ok], [ERR1], [ERR2]) 26
echo AS_LITERAL_IF([a=b], [ok], [ERR1], [ERR2]) 27
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [],
[[ok 1
ok 2
ok 3
ok 4
ok 5
ok 6
ok 7
ok 8
ok 9
ok 10
ok 11
ok 12
ok 13
ok 14
ok 15
ok 16
ok 17
ok 18
ok 19
ok 20
ok 21
ok 22
ok 23
ok 24
ok 25
ok 26
ok 27
]])

AT_CLEANUP


## --------------------- ##
## AS_TR_SH, AS_TR_CPP.  ##
## --------------------- ##

AT_SETUP([AS@&t@_TR_SH and AS@&t@_TR_CPP])

AT_DATA_M4SH([script.as], [[dnl
AS_INIT
m4_define([abc], [hI])m4_define([ABC], [Hi])
m4_define([hi], [oops])m4_define([HI], [OOPS])
echo AS_TR_SH(abc) AS_TR_SH(aBc) AS_TR_SH(ABC)
echo AS_TR_SH([abc]) AS_TR_SH([aBc]) AS_TR_SH([ABC])
echo AS_TR_SH([[abc]]) AS_TR_SH([[aBc]]) AS_TR_SH([[ABC]])
echo AS_TR_CPP(abc) AS_TR_CPP(aBc) AS_TR_CPP(ABC)
echo AS_TR_CPP([abc]) AS_TR_CPP([aBc]) AS_TR_CPP([ABC])
echo AS_TR_CPP([[abc]]) AS_TR_CPP([[aBc]]) AS_TR_CPP([[ABC]])
echo ===
[var=abc vAr=aBc VAR=ABC]
echo AS_TR_SH($var) AS_TR_SH($vAr) AS_TR_SH($VAR)
echo AS_TR_SH([$var]) AS_TR_SH([$vAr]) AS_TR_SH([$VAR])
echo AS_TR_SH([[$var]]) AS_TR_SH([[$vAr]]) AS_TR_SH([[$VAR]])
echo AS_TR_CPP($var) AS_TR_CPP($vAr) AS_TR_CPP($VAR)
echo AS_TR_CPP([$var]) AS_TR_CPP([$vAr]) AS_TR_CPP([$VAR])
echo AS_TR_CPP([[$var]]) AS_TR_CPP([[$vAr]]) AS_TR_CPP([[$VAR]])
echo ===
echo AS_TR_SH(`echo abc`) AS_TR_SH(`echo aBc`) AS_TR_SH(`echo ABC`)
echo AS_TR_SH([`echo abc`]) AS_TR_SH([`echo aBc`]) AS_TR_SH([`echo ABC`])
echo AS_TR_SH([[`echo abc`]]) AS_TR_SH([[`echo aBc`]]) AS_TR_SH([[`echo ABC`]])
echo AS_TR_CPP(`echo abc`) AS_TR_CPP(`echo aBc`) AS_TR_CPP(`echo ABC`)
echo AS_TR_CPP([`echo abc`]) AS_TR_CPP([`echo aBc`]) AS_TR_CPP([`echo ABC`])
echo AS_TR_CPP([[`echo abc`]]) AS_TR_CPP([[`echo aBc`]]) AS_TR_CPP([[`echo ABC`]])
echo ===
# start here
echo AS_TR_SH([a.b/c+*-=])
echo AS_TR_CPP([a.b/c+*-=])
var=a.b/c+*-=
echo AS_TR_SH([$var])
echo AS_TR_CPP([$var])
m4_define([macro], [a.b/c+*-=])
echo AS_TR_SH([macro])
echo AS_TR_CPP([macro])
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [],
[[hI aBc Hi
hI aBc Hi
abc aBc ABC
HI ABC HI
HI ABC HI
ABC ABC ABC
===
abc aBc ABC
abc aBc ABC
abc aBc ABC
ABC ABC ABC
ABC ABC ABC
ABC ABC ABC
===
hI aBc Hi
hI aBc Hi
abc aBc ABC
HI ABC HI
HI ABC HI
ABC ABC ABC
===
a_b_cpp__
A_B_C_P__
a_b_cpp__
A_B_C_P__
a_b_cpp__
A_B_C_P__
]])

dnl Check that of the last 6 macros, only 2 needed command substitution.
dnl This test abuses our knowledge of m4sh internals a bit; oh well.
AT_CHECK([tab='	' # a single ASCII tab character
sed -n '/start here/,$ {
/`.*`/p
}' script | wc -l | sed "s/[[ $tab]]//g" ], [], [[2
]])

AT_CLEANUP


## ---------- ##
## AS_VAR_*.  ##
## ---------- ##

AT_SETUP([AS@&t@_VAR basics])
AT_KEYWORDS([m4sh AS@&t@_VAR_COPY AS@&t@_VAR_SET AS@&t@_VAR_GET])
AT_KEYWORDS([AS@&t@_VAR_TEST_SET AS@&t@_VAR_SET_IF AS@&t@_VAR_IF])
AT_KEYWORDS([AS@&t@_VAR_PUSHDEF AS@&t@_VAR_POPDEF])

AT_DATA_M4SH([script.as], [[dnl
AS_INIT
 m4_define([with], [WITH])
# Literals.
dnl AS_VAR_SET_IF also covers AS_VAR_TEST_SET
AS_VAR_SET_IF([foo], [echo oops]) && echo ok
AS_VAR_IF([foo], [], [echo ok], [echo oops])
foo=
AS_VAR_SET_IF([foo], [echo ok])
AS_VAR_SET([foo], ['\a  "weird" `value` with; $fun '\''characters
']) # 'font-lock
AS_VAR_COPY([bar], [foo])
AS_ECHO(["$bar-"])
AS_ECHO(["AS_VAR_GET([foo])-"])
AS_VAR_SET_IF([foo], [echo ok], [echo oops])
AS_VAR_IF([foo], [string], [echo oops]) && echo ok
AS_VAR_PUSHDEF([tmp], [foo])
AS_VAR_IF([tmp], ['\a  "weird" `value` with; $fun '\''characters
'], [echo ok], [echo oops]) # 'font-lock
AS_VAR_POPDEF([tmp])
m4_ifdef([tmp], [echo oops])

# Indirects via shell vars.
echo '===='
num=1
AS_VAR_SET_IF([foo$num], [echo oops]) && echo ok
AS_VAR_IF([foo$num], [], [echo ok], [echo oops])
foo1=
AS_VAR_SET_IF([foo$num], [echo ok])
AS_VAR_SET([foo$num], ['\a  "weird" `value` with; $fun '\''characters
']) # 'font-lock
AS_VAR_COPY([bar], [foo$num])
num=2
AS_VAR_COPY([foo$num], [bar])
AS_ECHO(["$foo2-"])
AS_ECHO(["AS_VAR_GET([foo$num])-"])
AS_VAR_SET_IF([foo$num], [echo ok], [echo oops])
AS_VAR_IF([foo$num], [string], [echo oops]) && echo ok
AS_VAR_PUSHDEF([tmp], [foo$num])
AS_VAR_IF([tmp], ['\a  "weird" `value` with; $fun '\''characters
'], [echo ok], [echo oops]) # 'font-lock
AS_VAR_POPDEF([tmp])
m4_ifdef([tmp], [echo oops])

# Indirects via command substitution.
echo '===='
AS_VAR_SET_IF([`echo foo3`], [echo oops]) && echo ok
AS_VAR_IF([`echo foo3`], [], [echo ok], [echo oops])
foo3=
AS_VAR_SET_IF([`echo foo3`], [echo ok])
AS_VAR_SET([`echo foo3`], ['\a  "weird" `value` with; $fun '\''characters
']) # 'font-lock
AS_VAR_COPY([bar], [`echo foo3`])
num=2
AS_VAR_COPY([`echo foo4`], [bar])
AS_ECHO(["$foo4-"])
AS_ECHO(["AS_VAR_GET([`echo foo4`])-"])
AS_VAR_SET_IF([`echo foo4`], [echo ok], [echo oops])
AS_VAR_IF([`echo foo4`], [string], [echo oops]) && echo ok
AS_VAR_PUSHDEF([tmp], [`echo foo4`])
AS_VAR_IF([tmp], ['\a  "weird" `value` with; $fun '\''characters
'], [echo ok], [echo oops]) # 'font-lock
AS_VAR_POPDEF([tmp])
m4_ifdef([tmp], [echo oops])
:
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [], [[ok
ok
ok
\a  "weird" `value` WITH; $fun 'characters
-
\a  "weird" `value` WITH; $fun 'characters
-
ok
ok
ok
====
ok
ok
ok
\a  "weird" `value` WITH; $fun 'characters
-
\a  "weird" `value` WITH; $fun 'characters-
ok
ok
ok
====
ok
ok
ok
\a  "weird" `value` WITH; $fun 'characters
-
\a  "weird" `value` WITH; $fun 'characters-
ok
ok
ok
]])

AT_CLEANUP


## --------------- ##
## AS_VAR_APPEND.  ##
## --------------- ##

AT_SETUP([AS@&t@_VAR_APPEND])
AT_KEYWORDS([m4sh AS@&t@_VAR])

AT_DATA_M4SH([script.as], [[dnl
AS_INIT
# Literals.
AS_VAR_APPEND([foo], ["hello,  "])
AS_VAR_APPEND([foo], [world])
echo "$foo"
# Indirects via shell vars.
num=1
AS_VAR_APPEND([foo$num], ['hello,  '])
AS_VAR_APPEND([foo$num], [`echo "world"`])
echo "$foo1"
# Indirects via command substitution.
h=hello w=',  world'
AS_VAR_APPEND([`echo foo2`], [${h}])
AS_VAR_APPEND([`echo foo2`], ["$w"])
echo "$foo2"
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [],
[[hello,  world
hello,  world
hello,  world
]])

AT_CLEANUP


## -------------- ##
## AS_VAR_ARITH.  ##
## -------------- ##

AT_SETUP([AS@&t@_VAR_ARITH])
AT_KEYWORDS([m4sh AS@&t@_VAR])

AT_DATA_M4SH([script.as], [[dnl
AS_INIT
# Literals.
AS_VAR_ARITH([foo], [1 + 1])
echo "$foo"
# Indirects via shell vars.
num=1
AS_VAR_ARITH([foo$num], [\( 2 + 3 \) \* 4])
echo "$foo1"
# Indirects via command substitution.
AS_VAR_ARITH([`echo foo2`], [0 + -2 + $foo1 / 2])
echo "$foo2"
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [],
[[2
20
8
]])

AT_CLEANUP


## ----------------- ##
## AS_INIT cleanup.  ##
## ----------------- ##

AT_SETUP([AS@&t@_INIT cleanup])
AT_KEYWORDS([m4sh m4@&t@_wrap m4@&t@_wrap_lifo])

AT_DATA_M4SH([script.as], [[dnl
dnl Registered before AS_INIT's cleanups
m4_wrap([echo cleanup 1
])
m4_pushdef([_AS_SHELL_FN_SPY])dnl neutralize the spy, we don't care about it
AS_INIT
dnl Registered after AS_INIT's cleanups, thus goes to KILL diversion
m4_wrap([echo cleanup 2
dnl However, nested wraps and diversions can still be used
dnl Also, test wrapping text that looks like parameter reference
m4_wrap([echo cleanup 3
m4_divert_text([M4SH-INIT], [m4_define([foo], [$1])dnl
echo prep foo([4])
])])])
dnl Registered before AS_INIT's cleanups
m4_wrap_lifo([echo cleanup 5
])
echo body
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [], [[prep 4
body
cleanup 5
cleanup 1
]])

AT_CLEANUP


## -------------------------- ##
## AS_INIT basename __file__. ##
## -------------------------- ##

AT_SETUP([AS@&t@_INIT basename __@&t@file__])
AT_KEYWORDS([m4sh])

AT_CHECK([mkdir sub || exit 77])
AT_DATA_M4SH([sub/script.as], [[dnl
AS_INIT
]])
AT_CHECK_AUTOM4TE([--language=m4sh sub/script.as -o script])
AT_CHECK([grep '^# Generated from' script], [0], [dnl
# Generated from script.as by ]m4_PACKAGE_STRING[.
])

AT_CLEANUP


## ------------------- ##
## AS_INIT_GENERATED.  ##
## ------------------- ##

AT_SETUP([AS@&t@_INIT_GENERATED])
AT_KEYWORDS([AS@&t@_MESSAGE AS@&t@_MESSAGE_LOG_FD])

dnl First run, no logging, tests shell selection
AT_DATA_M4SH([script.as], [[dnl
AS_INIT
AS_INIT_GENERATED([child], [echo hello from child])
cat >>child <<\EOF
AS_ECHO(["SHELL=$SHELL"])
EOF
echo hello from parent
AS_ECHO(["SHELL=$SHELL"])
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [0], [stdout])
AT_CHECK([grep 'SHELL=.' stdout], [0], [ignore])
sed s/parent/child/ <stdout >expout
AT_CHECK([./child], [0], [expout])
SHELL=/bogus
export SHELL
cp stdout expout
mv child child.bak
AT_CHECK([$CONFIG_SHELL ./script], [0], [expout])
AT_CHECK([cmp child child.bak])
AT_CHECK([grep 'SHELL=.' stdout], [0], [ignore])
sed s/parent/child/ <stdout >expout
AT_CHECK([./child], [0], [expout])


dnl Second run, with logging from parent and child, tests fd handling
AT_DATA_M4SH([script.as], [[dnl
AS_INIT
child=${1-child}
m4_define([AS_MESSAGE_LOG_FD], [5])
exec AS_MESSAGE_LOG_FD>log
AS_INIT_GENERATED([$child], [echo hello1 from $child]) || AS_EXIT([1])
cat >>$child <<\EOF
m4_pushdef([AS_MESSAGE_LOG_FD])
AS_MESSAGE([hello2 from ${child}child])
m4_popdef([AS_MESSAGE_LOG_FD])
exec AS_MESSAGE_LOG_FD>>log
AS_MESSAGE([hello3 from child])
EOF
AS_MESSAGE([hello from parent])
dnl close log in parent before spawning child, for mingw
exec AS_MESSAGE_LOG_FD>&-
./$child
]])

rm -f script
AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [0], [[script: hello from parent
hello1 from child
child: hello2 from child
child: hello3 from child
]])
AT_CHECK([[sed 's,:[0-9][0-9]*:,:0:,' log]], [0],
[[script:0: hello from parent
child:0: hello3 from child
]])

# Force write error creating a file on stdout
if test -w /dev/full && test -c /dev/full; then
  AT_CHECK([$CONFIG_SHELL ./script /dev/full], [1], [ignore], [ignore])
fi

AT_CLEANUP


## --------------- ##
## AS_MESSAGE_FD.  ##
## --------------- ##

AT_SETUP([AS@&t@_MESSAGE_FD])
AT_KEYWORDS([AS@&t@_MESSAGE AS@&t@_MESSAGE_LOG_FD AS@&t_ORIGINAL_STDIN_FD])
AT_KEYWORDS([AS@&t@_LINENO_PUSH])

AT_DATA_M4SH([script.as], [[dnl
AS_INIT
m4_define([AS_ORIGINAL_STDIN_FD], [5])
m4_define([AS_MESSAGE_LOG_FD], [6])
m4_define([AS_MESSAGE_FD], [7])
exec AS_ORIGINAL_STDIN_FD<&0 </dev/null AS_MESSAGE_LOG_FD>log
if test $[#] -gt 0; then
  exec AS_MESSAGE_FD>/dev/null
else
  exec AS_MESSAGE_FD>&1
fi
AS_LINENO_PUSH([100])
cat # tests that stdin is neutralized
AS_MESSAGE([hello world])
cat <&AS_ORIGINAL_STDIN_FD
]])

AT_CHECK_M4SH
AT_CHECK([echo goodbye | $CONFIG_SHELL ./script], [0],
[[script: hello world
goodbye
]])
AT_CHECK([cat log], [0],
[[script:100: hello world
]])
rm log
AT_CHECK([echo goodbye | $CONFIG_SHELL ./script silent], [0],
[[goodbye
]])
AT_CHECK([cat log], [0],
[[script:100: hello world
]])

AT_CLEANUP


## --------------- ##
## _AS_CLEAN_DIR.  ##
## --------------- ##

AT_SETUP([_AS@&t@_CLEAN_DIR])

dnl ensure that we can erase all files in a directory.  Note that
dnl _AS_CLEAN_DIR needs three globs to catch all these files.
AT_DATA_M4SH([script.as], [[dnl
AS_INIT
# Unwritable subdirectories are common during 'make distcheck'.
mkdir sub sub/unwritable || AS_ERROR([failed to mkdir])
touch sub/unwritable/file || AS_ERROR([failed to touch])
chmod a-wx sub/unwritable || AS_ERROR([failed to chmod])
# Cygwin 1.5 can't touch 'sub/...', so make that file optional.
touch sub/a sub/aa sub/aaa sub/.a sub/..a sub/.aa \
  || AS_ERROR([failed to touch])
touch sub/... 2>/dev/null
_AS_CLEAN_DIR([sub]) || AS_ERROR([failed to clean])
# rmdir instead of 'rm -fr' here proves that we emptied sub.
rmdir sub || AS_ERROR([failed to rmdir])
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script])

AT_CLEANUP


## -------- ##
## ECHO_C.  ##
## -------- ##

AT_SETUP([ECHO_C])

AT_DATA_M4SH([script.as], [[dnl
AS_INIT
_AS_PREPARE
foo=`echo foobar`
echo "$foo"
]])

AT_CHECK_M4SH
AT_CHECK([$CONFIG_SHELL ./script], [], [foobar
])

AT_CLEANUP