Attachment #666317 for bug #732648

View | Details | Raw Unified | Return to bug 732648
Collapse All | Expand All




other than alphanumerics and underscores are changed to @samp{-}.  If
provided, @var{url} should be the home page for the package.

Leading and trailing whitespace is stripped from all the arguments to
@code{AC_INIT}, and interior whitespace is collapsed to a single space.

The arguments to @code{AC_INIT} may be computed by M4, when
@command{autoconf} is run.  For instance, it is fine for the
@var{version} argument to be an invocation of @code{m4_esyscmd} that
runs a command that determines the package's version from information
stored in the package's version control system.  However, they may not
be computed by the shell, when @command{configure} is run; if they
contain any construct that would cause computation by the shell,
Autoconf will issue an error.  This restriction is because the arguments
to AC_INIT are written into @file{configure} several times, in different
places, only some of which are subject to shell variable and command
substitution.

The @var{tarname} argument is used to construct filenames.
It should not contain wildcard characters, white space, or anything else
that could be troublesome as part of a file or directory name.
as part of a file or directory name.

The following M4 macros (e.g., @code{AC_PACKAGE_NAME}), output variables
(e.g., @code{PACKAGE_NAME}), and preprocessor symbols (e.g.,

standard macros like @code{AC_ARG_ENABLE} instead of attempting to
implement your own option processing.  @xref{Site Configuration}.

If you use the @code{AC_PACKAGE} M4 macros, beware that they may contain
characters that are significant to M4.  In almost all cases, you should
refer to them using @code{m4_defn}.  @xref{Programming in M4sugar}.

@node Versioning
@section Dealing with Autoconf versions
@cindex Autoconf version





# _AC_INIT_PACKAGE(PACKAGE-NAME, VERSION, BUG-REPORT, [TARNAME], [URL])
# ---------------------------------------------------------------------
# Set the values of AC_PACKAGE_{NAME,VERSION,STRING,BUGREPORT,TARNAME,URL}
# from the arguments.
m4_define([_AC_INIT_PACKAGE],
[_AC_INIT_PACKAGE_N(m4_normalize([$1]), m4_normalize([$2]), m4_normalize([$3]),
                    m4_normalize([$4]), m4_normalize([$5]))])

# _AC_INIT_PACKAGE_N(PACKAGE-NAME, VERSION, BUG-REPORT, [TARNAME], [URL])
# -----------------------------------------------------------------------
# Subroutine of _AC_INIT_PACKAGE.
m4_define([_AC_INIT_PACKAGE_N],
[# PACKAGE-NAME, VERSION, BUGREPORT, and URL should all be safe for use
# in shell strings of all kinds.
_AC_INIT_LITERAL([$1])
_AC_INIT_LITERAL([$2])
_AC_INIT_LITERAL([$3])
_AC_INIT_LITERAL([$5])
# TARNAME is even more constrained: it should not contain any shell
# metacharacters or whitespace, because it is used to construct
# filenames.
AS_LITERAL_WORD_IF([$4], [],
  [m4_warn([syntax],
	   [AC_INIT: unsafe as a filename: "$4"])])
#
m4_define_default([AC_PACKAGE_NAME],      [$1])
m4_define_default([AC_PACKAGE_VERSION],   [$2])
# The m4_strip makes AC_PACKAGE_STRING be [], not [ ], when
# both $1 and $2 are empty.
m4_define_default([AC_PACKAGE_STRING],    m4_strip([$1 $2]))
m4_define_default([AC_PACKAGE_BUGREPORT], [$3])
#
# N.B. m4_ifnblank strips one layer of quotation from whichever of its
# second and third argument it evaluates to.
m4_define_default([AC_PACKAGE_TARNAME],
  m4_ifnblank([$4], [[$4]],
    [m4_quote(m4_bpatsubst(m4_tolower(m4_bpatsubst([$1], [^GNU ], [])),
      [[^_abcdefghijklmnopqrstuvwxyz0123456789]], [-]))]))
m4_define_default([AC_PACKAGE_URL],
  m4_ifnblank([$5], [[$5]],
    [m4_if(m4_index([$1], [GNU ]), [0],
      [[https://www.gnu.org/software/]m4_defn([AC_PACKAGE_TARNAME])[/]],
      [])]))
				 [[^_abcdefghijklmnopqrstuvwxyz0123456789]],
				 [-])]))])
m4_ifndef([AC_PACKAGE_URL],
	  [m4_define([AC_PACKAGE_URL],
		     m4_default(m4_defn([_ac_init_URL]),
				[m4_if(m4_index(m4_defn([_ac_init_NAME]),
						[GNU ]), [0],
    [[https://www.gnu.org/software/]m4_defn([AC_PACKAGE_TARNAME])[/]])]))])
m4_popdef([_ac_init_NAME])
m4_popdef([_ac_init_VERSION])
m4_popdef([_ac_init_BUGREPORT])
m4_popdef([_ac_init_TARNAME])
m4_popdef([_ac_init_URL])
])



[m4_divert_text([HEADER-COMMENT],
[@%:@ Guess values for system-dependent variables and create Makefiles.
@%:@ Generated by m4_PACKAGE_STRING[]dnl
m4_ifset([AC_PACKAGE_STRING], [ for m4_defn([AC_PACKAGE_STRING]).
])dnl
m4_ifset([AC_PACKAGE_BUGREPORT],
	 [m4_divert_text([HEADER-COMMENT],
			 [@%:@
@%:@ Report bugs to: m4_defn([AC_PACKAGE_BUGREPORT])])])
])])


# _AC_INIT_COPYRIGHT

AC_SUBST([PATH_SEPARATOR])dnl

# Identity of this package.
AC_SUBST([PACKAGE_NAME],      ['m4_defn([AC_PACKAGE_NAME])'])dnl
AC_SUBST([PACKAGE_TARNAME],   ['m4_defn([AC_PACKAGE_TARNAME])'])dnl
AC_SUBST([PACKAGE_VERSION],   ['m4_defn([AC_PACKAGE_VERSION])'])dnl
AC_SUBST([PACKAGE_STRING],    ['m4_defn([AC_PACKAGE_STRING])'])dnl
AC_SUBST([PACKAGE_BUGREPORT], ['m4_defn([AC_PACKAGE_BUGREPORT])'])dnl
AC_SUBST([PACKAGE_URL],       ['m4_defn([AC_PACKAGE_URL])'])dnl
AC_SUBST([PACKAGE_STRING],
	 [m4_ifdef([AC_PACKAGE_STRING],    ['AC_PACKAGE_STRING'])])dnl
AC_SUBST([PACKAGE_BUGREPORT],
	 [m4_ifdef([AC_PACKAGE_BUGREPORT], ['AC_PACKAGE_BUGREPORT'])])dnl
AC_SUBST([PACKAGE_URL],
	 [m4_ifdef([AC_PACKAGE_URL],       ['AC_PACKAGE_URL'])])dnl

m4_divert_pop([DEFAULTS])dnl
m4_wrap_lifo([m4_divert_text([DEFAULTS],

  # Omit some internal or obsolete options to make the list less imposing.
  # This message is too long to be a string in the A/UX 3.1 sh.
  cat <<_ACEOF
\`configure' configures m4_default_nblank(m4_defn([AC_PACKAGE_STRING]),
					  [this package])dnl
 to adapt to many kinds of systems.

Usage: $[0] [[OPTION]]... [[VAR=VALUE]]...


  --infodir=DIR           info documentation [DATAROOTDIR/info]
  --localedir=DIR         locale-dependent data [DATAROOTDIR/locale]
  --mandir=DIR            man documentation [DATAROOTDIR/man]
  --docdir=DIR            documentation root @<:@DATAROOTDIR/doc/]dnl
m4_default_quoted(m4_defn([AC_PACKAGE_TARNAME]), [PACKAGE])[@:>@
    [AC_PACKAGE_TARNAME], [PACKAGE])@:>@)[
  --htmldir=DIR           html documentation [DOCDIR]
  --dvidir=DIR            dvi documentation [DOCDIR]
  --pdfdir=DIR            pdf documentation [DOCDIR]

if test -n "$ac_init_help"; then
m4_ifset([AC_PACKAGE_STRING],
[  case $ac_init_help in
     short | recursive )
       AS_ECHO(["Configuration of m4_defn([AC_PACKAGE_STRING]):"]);;
   esac])
  cat <<\_ACEOF
m4_divert_pop([HELP_ENABLE])dnl
m4_divert_push([HELP_END])dnl

m4_ifset([AC_PACKAGE_BUGREPORT],
[Report bugs to: m4_defn([AC_PACKAGE_BUGREPORT])
])dnl
m4_ifset([AC_PACKAGE_NAME], [m4_ifset([AC_PACKAGE_URL],
[m4_defn([AC_PACKAGE_NAME]) home page: m4_defn([AC_PACKAGE_URL])
])])dnl
m4_if(m4_index(m4_defn([AC_PACKAGE_NAME]), [GNU ]), [0],
[General help using GNU software: <https://www.gnu.org/gethelp/>.
])dnl
_ACEOF
ac_status=$?
fi

[m4_divert_text([VERSION_BEGIN],
[if $ac_init_version; then
  cat <<\_ACEOF
m4_ifset([AC_PACKAGE_NAME], [m4_defn([AC_PACKAGE_NAME]) ])configure[]dnl
m4_ifset([AC_PACKAGE_VERSION], [ m4_defn([AC_PACKAGE_VERSION])])
generated by m4_defn([m4_PACKAGE_STRING])])
m4_divert_text([VERSION_END],
[_ACEOF
  exit

This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by m4_ifset([AC_PACKAGE_NAME], [m4_defn([AC_PACKAGE_NAME]) ])dnl
$as_me[]m4_ifset([AC_PACKAGE_VERSION],
                 [ m4_defn([AC_PACKAGE_VERSION])]), which was
generated by m4_defn([m4_PACKAGE_STRING]).  Invocation command line was

  $ $[0]$ac_configure_args_raw


AS_INIT[]dnl
AS_PREPARE[]dnl
m4_divert_push([KILL])
_AC_INIT_PACKAGE($@)
_AC_INIT_DEFAULTS
_AC_INIT_PARSE_ARGS
_AC_INIT_DIRCHECK

Lines 1343-1351 cat >>$CONFIG_STATUS <<\_ACEOF \|\| ac_write_fail=1 Link Here

(-)a/lib/autoconf/status.m4 (-12 / +17 lines)
1343	# report actual input values of CONFIG_FILES etc. instead of their	1343	# report actual input values of CONFIG_FILES etc. instead of their
1344	# values after options handling.	1344	# values after options handling.
1345	ac_log="	1345	ac_log="
1346	This file was extended by m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])dnl	1346	This file was extended by m4_ifset([AC_PACKAGE_NAME],
1347	$as_me[]m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION]), which was	1347	[m4_defn([AC_PACKAGE_NAME]) ])dnl
1348	generated by m4_PACKAGE_STRING. Invocation command line was	1348	$as_me[]m4_ifset([AC_PACKAGE_VERSION],
		1349	[ m4_defn([AC_PACKAGE_VERSION])]), which was
		1350	generated by m4_defn([m4_PACKAGE_STRING]). Invocation command line was
1349		1351
1350	CONFIG_FILES = $CONFIG_FILES	1352	CONFIG_FILES = $CONFIG_FILES
1351	CONFIG_HEADERS = $CONFIG_HEADERS	1353	CONFIG_HEADERS = $CONFIG_HEADERS
Lines 1431-1442 m4_ifdef([_AC_SEEN_CONFIG(COMMANDS)], Link Here
1431	$config_commands	1433	$config_commands
1432		1434
1433	])dnl	1435	])dnl
1434	Report bugs to m4_ifset([AC_PACKAGE_BUGREPORT], [<AC_PACKAGE_BUGREPORT>],	1436	m4_ifset([AC_PACKAGE_BUGREPORT],
1435	[the package provider]).dnl	1437	[Report bugs to: m4_defn([AC_PACKAGE_BUGREPORT])
1436	m4_ifdef([AC_PACKAGE_NAME], [m4_ifset([AC_PACKAGE_URL], [	1438	]))dnl
1437	AC_PACKAGE_NAME home page: <AC_PACKAGE_URL>.])dnl	1439	m4_ifset([AC_PACKAGE_NAME], [m4_ifset([AC_PACKAGE_URL],
1438	m4_if(m4_index(m4_defn([AC_PACKAGE_NAME]), [GNU ]), [0], [	1440	[m4_defn([AC_PACKAGE_NAME]) home page: m4_defn([AC_PACKAGE_URL])
1439	General help using GNU software: <https://www.gnu.org/gethelp/>.])])"	1441	])])dnl
		1442	m4_if(m4_index(m4_defn([AC_PACKAGE_NAME]), [GNU ]), [0],
		1443	[General help using GNU software: <https://www.gnu.org/gethelp/>.
		1444	])"
1440		1445
1441	_ACEOF	1446	_ACEOF
1442	ac_cs_config=`AS_ECHO(["$ac_configure_args"]) \| sed "$ac_safe_unquote"`	1447	ac_cs_config=`AS_ECHO(["$ac_configure_args"]) \| sed "$ac_safe_unquote"`
Lines 1444-1452 ac_cs_config_escaped=`AS_ECHO(["$ac_cs_config"]) \| sed "s/^ //; s/'/'\\\\\\\\''/ Link Here
1444	cat >>$CONFIG_STATUS <<_ACEOF \|\| ac_write_fail=1	1449	cat >>$CONFIG_STATUS <<_ACEOF \|\| ac_write_fail=1
1445	ac_cs_config='$ac_cs_config_escaped'	1450	ac_cs_config='$ac_cs_config_escaped'
1446	ac_cs_version="\\	1451	ac_cs_version="\\
1447	m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])config.status[]dnl	1452	m4_ifset([AC_PACKAGE_NAME], [m4_defn([AC_PACKAGE_NAME]) ])config.status[]dnl
1448	m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])	1453	m4_ifset([AC_PACKAGE_VERSION], [ m4_defn([AC_PACKAGE_VERSION])])
1449	configured by $[0], generated by m4_PACKAGE_STRING,	1454	configured by $[0], generated by m4_defn([m4_PACKAGE_STRING]),
1450	with options \\"\$ac_cs_config\\"	1455	with options \\"\$ac_cs_config\\"
1451		1456
1452	Copyright (C) m4_PACKAGE_YEAR Free Software Foundation, Inc.	1457	Copyright (C) m4_PACKAGE_YEAR Free Software Foundation, Inc.





AT_SETUP([AC_INIT with unusual version strings])

if echo 'ab*c' | grep -F 'ab*c' >/dev/null 2>&1; then
  FGREP="grep -F"
else
  FGREP=fgrep
fi

# In both of the arguments that might contain URLs, make sure we test
# all of the unusual ASCII characters that commonly appear in URLs.
# The RFC 3986 "unreserved" characters are ASCII letters and digits, plus
#    - . _ ~
# The RFC 3986 "gen-delims" and "sub-delims" are
#    / : ? # [ ] @ ! $ & ' ( ) * + , ; =
# The URL escape character is
#    %
# Characters that are still significant for Bourne shell within a
# single-quoted string, double-quoted string, quoted here-doc, or
# unquoted here-doc are explicitly not allowed:
#    ' $
# Also, we don't test unbalanced parentheses or brackets here.

AT_DATA([configure.ac],
[[AC_INIT([GNU String++ with  spaces
           (foo)],
	  [2.48++  (2010-07-03)],
          [https://example/~bug/cdfijknoqrvw/-._:@!()[]*+,;/?y=z#1234567890
],
          [string++],
          [HTTPS://EXAMPLE/~PKG/BCDFIJNOQRUVW/-._:@!()[]*+,;/?y=z#1234567890
])
AC_OUTPUT
]])

AT_CHECK_AUTOCONF([-Werror])
AT_CHECK_CONFIGURE([-q])

AT_CHECK_CONFIGURE([--help], [], [stdout])
AT_CHECK([[$FGREP \
  'https://example/~bug/cdfijknoqrvw/-._:@!()[]*+,;/?y=z#1234567890' \
  stdout]], [], [ignore])
AT_CHECK([[$FGREP \
  'HTTPS://EXAMPLE/~PKG/BCDFIJNOQRUVW/-._:@!()[]*+,;/?y=z#1234567890' \
  stdout]], [], [ignore])

AT_CHECK_CONFIGURE([--version], [], [stdout])
AT_CHECK([$FGREP 'GNU String++ with spaces (foo)' stdout], [], [ignore])
AT_CHECK([$FGREP '2.48++ (2010-07-03)' stdout], [], [ignore])

AT_CHECK([./config.status --help], [], [stdout])
AT_CHECK([[$FGREP \
  'https://example/~bug/cdfijknoqrvw/-._:@!()[]*+,;/?y=z#1234567890' \
  stdout]], [], [ignore])
AT_CHECK([[$FGREP \
  'HTTPS://EXAMPLE/~PKG/BCDFIJNOQRUVW/-._:@!()[]*+,;/?y=z#1234567890' \
  stdout]], [], [ignore])

AT_CHECK([./config.status --version], [], [stdout])
AT_CHECK([$FGREP 'GNU String++ with spaces (foo)' stdout], [], [ignore])
AT_CHECK([$FGREP '2.48++ (2010-07-03)' stdout], [], [ignore])

# Repeat the above test using all the unusual characters that might appear
# in a list of email addresses in both BUG-REPORT and URL.  (URL isn't
# supposed to contain email addresses, but there's no good reason to
# restrict its syntax.)
# The RFC 5822 "atext" characters are ASCII letters and digits, plus
#    ! # $ % & ' * + - / = ? ^ _ ` { | } ~
# The RFC 5822 "special" characters, all of which might appear somewhere
# in an address list, are
#    ( ) < > [ ] : ; @ \ , . "
# As above, characters that are significant for Bourne shell within
# strings and heredocs are explicitly not allowed:
#    ' " ` \ $
# Whitespace is allowed but collapsed (just like AC_INIT does itself).
AT_DATA([configure.ac],
[[AC_INIT([GNU String++ with  spaces
           (foo)],
	  [2.48++  (2010-07-03)],
          [bugs: fred <A=B?C^D_E@F>,
                 G!H!I#J@K.L (wilma),
                 M%N&O@[156.247.38.49],
                 P*Q+R-S/T@U,
                 {jon|chyp~}@kqtvxz.VWXYZ;],
          [string++],
          [contact: jem <A=B?C^D_E@bd>,
                    F!G!H#I@fv.J (lugh),
                    K%L&M@[156.247.38.49],
                    N*O+P-Q/R@STU,
                    {qik|~prys}@wxz.VWXYZ;])
AC_OUTPUT
]])

AT_CHECK_AUTOCONF([-Werror])
AT_CHECK_CONFIGURE([-q])

AT_CHECK_CONFIGURE([--help], [], [stdout])
AT_CHECK([[$FGREP \
  'bugs: fred <A=B?C^D_E@F>, G!H!I#J@K.L (wilma), M%N&O@[156.247.38.49], P*Q+R-S/T@U, {jon|chyp~}@kqtvxz.VWXYZ;' \
  stdout]], [], [ignore])
AT_CHECK([[$FGREP \
  'contact: jem <A=B?C^D_E@bd>, F!G!H#I@fv.J (lugh), K%L&M@[156.247.38.49], N*O+P-Q/R@STU, {qik|~prys}@wxz.VWXYZ;' \
  stdout]], [], [ignore])

AT_CHECK_CONFIGURE([--version], [], [stdout])
AT_CHECK([$FGREP 'GNU String++ with spaces (foo)' stdout], [], [ignore])
AT_CHECK([$FGREP '2.48++ (2010-07-03)' stdout], [], [ignore])

AT_CHECK([./config.status --help], [], [stdout])
AT_CHECK([[$FGREP \
  'bugs: fred <A=B?C^D_E@F>, G!H!I#J@K.L (wilma), M%N&O@[156.247.38.49], P*Q+R-S/T@U, {jon|chyp~}@kqtvxz.VWXYZ;' \
  stdout]], [], [ignore])
AT_CHECK([[$FGREP \
  'contact: jem <A=B?C^D_E@bd>, F!G!H#I@fv.J (lugh), K%L&M@[156.247.38.49], N*O+P-Q/R@STU, {qik|~prys}@wxz.VWXYZ;' \
  stdout]], [], [ignore])

AT_CHECK([./config.status --version], [], [stdout])
AT_CHECK([$FGREP 'GNU String++ with spaces (foo)' stdout], [], [ignore])
AT_CHECK([$FGREP '2.48++ (2010-07-03)' stdout], [], [ignore])

# Check for invalid characters in each argument.
AT_DATA([configure.ac],
[[AC_INIT([GNU "String++"],
	  [2.48], [https://example.com/], [string++])

AT_CHECK_AUTOCONF([-Werror], [1], [ignore], [stderr])
AT_CHECK([grep 'AC_INIT: unsafe as a filename: ' stderr], [], [ignore])

# Commas and unbalanced close parentheses are especially troublesome for M4.

AT_DATA([configure.ac],
[[AC_INIT([GNU, String], [2.48], [bugs@gstring.example],
          [string], [https://gstring.example/])
AC_OUTPUT
]])
AT_CHECK_AUTOCONF

AT_DATA([configure.ac],
[[AC_INIT([GNU String)], [2.48], [bugs@gstring.example],
          [string], [https://gstring.example/])
AC_OUTPUT
]])
AT_CHECK_AUTOCONF

AT_DATA([configure.ac],
[[AC_INIT([GNU String], [2,48], [bugs@gstring.example],
          [string], [https://gstring.example/])
AC_OUTPUT
]])
AT_CHECK_AUTOCONF

AT_DATA([configure.ac],
[[AC_INIT([GNU String], [2.48)], [bugs@gstring.example],
          [string], [https://gstring.example/])
AC_OUTPUT
]])
AT_CHECK_AUTOCONF

AT_DATA([configure.ac],
[[AC_INIT([GNU String], [2.48], [bugs@gstring.example,
                                 gstring-bugs@example.com],
          [string], [https://gstring.example/])
AC_OUTPUT
]])
AT_CHECK_AUTOCONF

AT_DATA([configure.ac],
[[AC_INIT([GNU String], [2.48], [bugs)@gstring.example],
          [string], [https://gstring.example/])
AC_OUTPUT
]])
AT_CHECK_AUTOCONF

AT_DATA([configure.ac],
[[AC_INIT([GNU String], [2.48], [bugs@gstring.example],
          [string,], [https://gstring.example/])
AC_OUTPUT
]])
AT_CHECK_AUTOCONF

AT_DATA([configure.ac],
[[AC_INIT([GNU String], [2.48], [bugs@gstring.example],
          [string)], [https://gstring.example/])
AC_OUTPUT
]])
AT_CHECK_AUTOCONF([], [0], [ignore], [stderr])
AT_CHECK([grep 'AC_INIT: unsafe as a filename: ' stderr], [], [ignore])

AT_DATA([configure.ac],
[[AC_INIT([GNU String], [2.48], [bugs@gstring.example],
          [string], [https://gstring.example/docs,html])
AC_OUTPUT
]])
AT_CHECK_AUTOCONF


AT_DATA([configure.ac],
[[AC_INIT([GNU String], [2.48], [bugs@gstring.example],
          [string], [https://gstring.example/weird)/path])
AC_OUTPUT
]])
AT_CHECK_AUTOCONF

AT_CLEANUP

- 

Return to bug 732648

Lines 1876-1896 distribution tar ball names (e.g., @samp{autoconf}). It defaults to Link Here

(-)a/doc/autoconf.texi (-13 / +20 lines)
1876	other than alphanumerics and underscores are changed to @samp{-}. If	1876	other than alphanumerics and underscores are changed to @samp{-}. If
1877	provided, @var{url} should be the home page for the package.	1877	provided, @var{url} should be the home page for the package.
1878		1878
1879	All the arguments of @code{AC_INIT} must be static, i.e., there should not	1879	Leading and trailing whitespace is stripped from all the arguments to
1880	be any shell computation, quotes, or newlines, but they can be computed	1880	@code{AC_INIT}, and interior whitespace is collapsed to a single space.
1881	by M4. This is because the package information strings are expanded at	1881
1882	M4 time into several contexts, and must give the same text at shell time	1882	The arguments to @code{AC_INIT} may be computed by M4, when
1883	whether used in single-quoted strings, double-quoted strings, quoted	1883	@command{autoconf} is run. For instance, it is fine for the
1884	here-documents, or unquoted here-documents. It is permissible to use	1884	@var{version} argument to be an invocation of @code{m4_esyscmd} that
1885	@code{m4_esyscmd} or @code{m4_esyscmd_s} for computing a version string	1885	runs a command that determines the package's version from information
1886	that changes with every commit to a version control system (in fact,	1886	stored in the package's version control system. However, they may not
1887	Autoconf does just that, for all builds of the development tree made	1887	be computed by the shell, when @command{configure} is run; if they
1888	between releases).	1888	contain any construct that would cause computation by the shell,
		1889	Autoconf will issue an error. This restriction is because the arguments
		1890	to AC_INIT are written into @file{configure} several times, in different
		1891	places, only some of which are subject to shell variable and command
		1892	substitution.
1889		1893
1890	The @var{tarname} argument is used to construct filenames.	1894	The @var{tarname} argument is used to construct filenames.
1891	In addition to being static, it should not contain wildcard	1895	It should not contain wildcard characters, white space, or anything else
1892	characters, white space, or anything else that could be troublesome	1896	that could be troublesome as part of a file or directory name.
1893	as part of a file or directory name.
1894		1897
1895	The following M4 macros (e.g., @code{AC_PACKAGE_NAME}), output variables	1898	The following M4 macros (e.g., @code{AC_PACKAGE_NAME}), output variables
1896	(e.g., @code{PACKAGE_NAME}), and preprocessor symbols (e.g.,	1899	(e.g., @code{PACKAGE_NAME}), and preprocessor symbols (e.g.,
Lines 1947-1952 of updating @samp{$@@} and @samp{$*}. However, we suggest that you use Link Here
1947	standard macros like @code{AC_ARG_ENABLE} instead of attempting to	1950	standard macros like @code{AC_ARG_ENABLE} instead of attempting to
1948	implement your own option processing. @xref{Site Configuration}.	1951	implement your own option processing. @xref{Site Configuration}.
1949		1952
		1953	If you use the @code{AC_PACKAGE} M4 macros, beware that they may contain
		1954	characters that are significant to M4. In almost all cases, you should
		1955	refer to them using @code{m4_defn}. @xref{Programming in M4sugar}.
		1956
1950	@node Versioning	1957	@node Versioning
1951	@section Dealing with Autoconf versions	1958	@section Dealing with Autoconf versions
1952	@cindex Autoconf version	1959	@cindex Autoconf version

Lines 230-285 m4_define([_AC_INIT_LITERAL], Link Here

(-)a/lib/autoconf/general.m4 (-80 / +69 lines)
230		230
231	# _AC_INIT_PACKAGE(PACKAGE-NAME, VERSION, BUG-REPORT, [TARNAME], [URL])	231	# _AC_INIT_PACKAGE(PACKAGE-NAME, VERSION, BUG-REPORT, [TARNAME], [URL])
232	# ---------------------------------------------------------------------	232	# ---------------------------------------------------------------------
		233	# Set the values of AC_PACKAGE_{NAME,VERSION,STRING,BUGREPORT,TARNAME,URL}
		234	# from the arguments.
233	m4_define([_AC_INIT_PACKAGE],	235	m4_define([_AC_INIT_PACKAGE],
234	[m4_pushdef([_ac_init_NAME], m4_normalize([$1]))	236	[_AC_INIT_PACKAGE_N(m4_normalize([$1]), m4_normalize([$2]), m4_normalize([$3]),
235	m4_pushdef([_ac_init_VERSION], m4_normalize([$2]))	237	m4_normalize([$4]), m4_normalize([$5]))])
236	m4_pushdef([_ac_init_BUGREPORT], m4_normalize([$3]))	238
237	m4_pushdef([_ac_init_TARNAME], m4_normalize([$4]))	239	# _AC_INIT_PACKAGE_N(PACKAGE-NAME, VERSION, BUG-REPORT, [TARNAME], [URL])
238	m4_pushdef([_ac_init_URL], m4_normalize([$5]))	240	# -----------------------------------------------------------------------
239	# NAME, VERSION, BUGREPORT, and URL should all be safe for use in shell	241	# Subroutine of _AC_INIT_PACKAGE.
240	# strings of all kinds.	242	m4_define([_AC_INIT_PACKAGE_N],
241	_AC_INIT_LITERAL(m4_defn([_ac_init_NAME]))	243	[# PACKAGE-NAME, VERSION, BUGREPORT, and URL should all be safe for use
242	_AC_INIT_LITERAL(m4_defn([_ac_init_VERSION]))	244	# in shell strings of all kinds.
243	_AC_INIT_LITERAL(m4_defn([_ac_init_BUGREPORT]))	245	_AC_INIT_LITERAL([$1])
244	_AC_INIT_LITERAL(m4_defn([_ac_init_URL]))	246	_AC_INIT_LITERAL([$2])
		247	_AC_INIT_LITERAL([$3])
		248	_AC_INIT_LITERAL([$5])
245	# TARNAME is even more constrained: it should not contain any shell	249	# TARNAME is even more constrained: it should not contain any shell
246	# metacharacters or whitespace, because it is used to construct	250	# metacharacters or whitespace, because it is used to construct
247	# filenames.	251	# filenames.
248	AS_LITERAL_WORD_IF(m4_defn([_ac_init_TARNAME]), [],	252	AS_LITERAL_WORD_IF([$4], [],
249	[m4_warn([syntax],	253	[m4_warn([syntax],
250	[AC_INIT: unsafe as a filename: "]m4_defn([_ac_init_TARNAME])["])])	254	[AC_INIT: unsafe as a filename: "$4"])])
251	#	255	#
252	# These do not use m4_copy because we don't want to copy the pushdef stack.	256	m4_define_default([AC_PACKAGE_NAME], [$1])
253	m4_ifndef([AC_PACKAGE_NAME],	257	m4_define_default([AC_PACKAGE_VERSION], [$2])
254	[m4_define([AC_PACKAGE_NAME],	258	# The m4_strip makes AC_PACKAGE_STRING be [], not [ ], when
255	m4_defn([_ac_init_NAME]))])	259	# both $1 and $2 are empty.
256	m4_ifndef([AC_PACKAGE_VERSION],	260	m4_define_default([AC_PACKAGE_STRING], m4_strip([$1 $2]))
257	[m4_define([AC_PACKAGE_VERSION],	261	m4_define_default([AC_PACKAGE_BUGREPORT], [$3])
258	m4_defn([_ac_init_VERSION]))])	262	#
259	m4_ifndef([AC_PACKAGE_STRING],	263	# N.B. m4_ifnblank strips one layer of quotation from whichever of its
260	[m4_define([AC_PACKAGE_STRING],	264	# second and third argument it evaluates to.
261	m4_defn([_ac_init_NAME])[ ]m4_defn([_ac_init_VERSION]))])	265	m4_define_default([AC_PACKAGE_TARNAME],
262	m4_ifndef([AC_PACKAGE_BUGREPORT],	266	m4_ifnblank([$4], [[$4]],
263	[m4_define([AC_PACKAGE_BUGREPORT], _ac_init_BUGREPORT)])	267	[m4_quote(m4_bpatsubst(m4_tolower(m4_bpatsubst([$1], [^GNU ], [])),
264	m4_ifndef([AC_PACKAGE_TARNAME],	268	[[^_abcdefghijklmnopqrstuvwxyz0123456789]], [-]))]))
265	[m4_define([AC_PACKAGE_TARNAME],	269	m4_define_default([AC_PACKAGE_URL],
266	m4_default(m4_defn([_ac_init_TARNAME]),	270	m4_ifnblank([$5], [[$5]],
267	[m4_bpatsubst(m4_tolower(	271	[m4_if(m4_index([$1], [GNU ]), [0],
268	m4_bpatsubst(m4_defn([_ac_init_NAME]),	272	[[https://www.gnu.org/software/]m4_defn([AC_PACKAGE_TARNAME])[/]],
269	[GNU ])),	273	[])]))
270	[[^_abcdefghijklmnopqrstuvwxyz0123456789]],
271	[-])]))])
272	m4_ifndef([AC_PACKAGE_URL],
273	[m4_define([AC_PACKAGE_URL],
274	m4_default(m4_defn([_ac_init_URL]),
275	[m4_if(m4_index(m4_defn([_ac_init_NAME]),
276	[GNU ]), [0],
277	[[https://www.gnu.org/software/]m4_defn([AC_PACKAGE_TARNAME])[/]])]))])
278	m4_popdef([_ac_init_NAME])
279	m4_popdef([_ac_init_VERSION])
280	m4_popdef([_ac_init_BUGREPORT])
281	m4_popdef([_ac_init_TARNAME])
282	m4_popdef([_ac_init_URL])
283	])	274	])
284		275
285		276
Lines 363-375 m4_define([_AC_INIT_NOTICE], Link Here
363	[m4_divert_text([HEADER-COMMENT],	354	[m4_divert_text([HEADER-COMMENT],
364	[@%:@ Guess values for system-dependent variables and create Makefiles.	355	[@%:@ Guess values for system-dependent variables and create Makefiles.
365	@%:@ Generated by m4_PACKAGE_STRING[]dnl	356	@%:@ Generated by m4_PACKAGE_STRING[]dnl
366	m4_ifset([AC_PACKAGE_STRING], [ for AC_PACKAGE_STRING]).])	357	m4_ifset([AC_PACKAGE_STRING], [ for m4_defn([AC_PACKAGE_STRING]).
367		358	])dnl
368	m4_ifset([AC_PACKAGE_BUGREPORT],	359	m4_ifset([AC_PACKAGE_BUGREPORT],
369	[m4_divert_text([HEADER-COMMENT],	360	[m4_divert_text([HEADER-COMMENT],
370	[@%:@	361	[@%:@
371	@%:@ Report bugs to <AC_PACKAGE_BUGREPORT>.])])	362	@%:@ Report bugs to: m4_defn([AC_PACKAGE_BUGREPORT])])])
372	])	363	])])
373		364
374		365
375	# _AC_INIT_COPYRIGHT	366	# _AC_INIT_COPYRIGHT
Lines 436-453 AC_SUBST([SHELL])dnl Link Here
436	AC_SUBST([PATH_SEPARATOR])dnl	427	AC_SUBST([PATH_SEPARATOR])dnl
437		428
438	# Identity of this package.	429	# Identity of this package.
439	AC_SUBST([PACKAGE_NAME],	430	AC_SUBST([PACKAGE_NAME], ['m4_defn([AC_PACKAGE_NAME])'])dnl
440	[m4_ifdef([AC_PACKAGE_NAME], ['AC_PACKAGE_NAME'])])dnl	431	AC_SUBST([PACKAGE_TARNAME], ['m4_defn([AC_PACKAGE_TARNAME])'])dnl
441	AC_SUBST([PACKAGE_TARNAME],	432	AC_SUBST([PACKAGE_VERSION], ['m4_defn([AC_PACKAGE_VERSION])'])dnl
442	[m4_ifdef([AC_PACKAGE_TARNAME], ['AC_PACKAGE_TARNAME'])])dnl	433	AC_SUBST([PACKAGE_STRING], ['m4_defn([AC_PACKAGE_STRING])'])dnl
443	AC_SUBST([PACKAGE_VERSION],	434	AC_SUBST([PACKAGE_BUGREPORT], ['m4_defn([AC_PACKAGE_BUGREPORT])'])dnl
444	[m4_ifdef([AC_PACKAGE_VERSION], ['AC_PACKAGE_VERSION'])])dnl	435	AC_SUBST([PACKAGE_URL], ['m4_defn([AC_PACKAGE_URL])'])dnl
445	AC_SUBST([PACKAGE_STRING],
446	[m4_ifdef([AC_PACKAGE_STRING], ['AC_PACKAGE_STRING'])])dnl
447	AC_SUBST([PACKAGE_BUGREPORT],
448	[m4_ifdef([AC_PACKAGE_BUGREPORT], ['AC_PACKAGE_BUGREPORT'])])dnl
449	AC_SUBST([PACKAGE_URL],
450	[m4_ifdef([AC_PACKAGE_URL], ['AC_PACKAGE_URL'])])dnl
451		436
452	m4_divert_pop([DEFAULTS])dnl	437	m4_divert_pop([DEFAULTS])dnl
453	m4_wrap_lifo([m4_divert_text([DEFAULTS],	438	m4_wrap_lifo([m4_divert_text([DEFAULTS],
Lines 1048-1056 if test "$ac_init_help" = "long"; then Link Here
1048	# Omit some internal or obsolete options to make the list less imposing.	1033	# Omit some internal or obsolete options to make the list less imposing.
1049	# This message is too long to be a string in the A/UX 3.1 sh.	1034	# This message is too long to be a string in the A/UX 3.1 sh.
1050	cat <<_ACEOF	1035	cat <<_ACEOF
1051	\`configure' configures m4_ifset([AC_PACKAGE_STRING],	1036	\`configure' configures m4_default_nblank(m4_defn([AC_PACKAGE_STRING]),
1052	[AC_PACKAGE_STRING],	1037	[this package])dnl
1053	[this package]) to adapt to many kinds of systems.	1038	to adapt to many kinds of systems.
1054		1039
1055	Usage: $[0] [[OPTION]]... [[VAR=VALUE]]...	1040	Usage: $[0] [[OPTION]]... [[VAR=VALUE]]...
1056		1041
Lines 1099-1107 Fine tuning of the installation directories: Link Here
1099	--infodir=DIR info documentation [DATAROOTDIR/info]	1084	--infodir=DIR info documentation [DATAROOTDIR/info]
1100	--localedir=DIR locale-dependent data [DATAROOTDIR/locale]	1085	--localedir=DIR locale-dependent data [DATAROOTDIR/locale]
1101	--mandir=DIR man documentation [DATAROOTDIR/man]	1086	--mandir=DIR man documentation [DATAROOTDIR/man]
1102	]AS_HELP_STRING([--docdir=DIR],	1087	--docdir=DIR documentation root @<:@DATAROOTDIR/doc/]dnl
1103	[documentation root ]@<:@DATAROOTDIR/doc/m4_ifset([AC_PACKAGE_TARNAME],	1088	m4_default_quoted(m4_defn([AC_PACKAGE_TARNAME]), [PACKAGE])[@:>@
1104	[AC_PACKAGE_TARNAME], [PACKAGE])@:>@)[
1105	--htmldir=DIR html documentation [DOCDIR]	1089	--htmldir=DIR html documentation [DOCDIR]
1106	--dvidir=DIR dvi documentation [DOCDIR]	1090	--dvidir=DIR dvi documentation [DOCDIR]
1107	--pdfdir=DIR pdf documentation [DOCDIR]	1091	--pdfdir=DIR pdf documentation [DOCDIR]
Lines 1139-1156 fi Link Here
1139	if test -n "$ac_init_help"; then	1123	if test -n "$ac_init_help"; then
1140	m4_ifset([AC_PACKAGE_STRING],	1124	m4_ifset([AC_PACKAGE_STRING],
1141	[ case $ac_init_help in	1125	[ case $ac_init_help in
1142	short \| recursive ) echo "Configuration of AC_PACKAGE_STRING:";;	1126	short \| recursive )
		1127	AS_ECHO(["Configuration of m4_defn([AC_PACKAGE_STRING]):"]);;
1143	esac])	1128	esac])
1144	cat <<\_ACEOF	1129	cat <<\_ACEOF
1145	m4_divert_pop([HELP_ENABLE])dnl	1130	m4_divert_pop([HELP_ENABLE])dnl
1146	m4_divert_push([HELP_END])dnl	1131	m4_divert_push([HELP_END])dnl
1147		1132
1148	Report bugs to m4_ifset([AC_PACKAGE_BUGREPORT], [<AC_PACKAGE_BUGREPORT>],	1133	m4_ifset([AC_PACKAGE_BUGREPORT],
1149	[the package provider]).dnl	1134	[Report bugs to: m4_defn([AC_PACKAGE_BUGREPORT])
1150	m4_ifdef([AC_PACKAGE_NAME], [m4_ifset([AC_PACKAGE_URL], [	1135	])dnl
1151	AC_PACKAGE_NAME home page: <AC_PACKAGE_URL>.])dnl	1136	m4_ifset([AC_PACKAGE_NAME], [m4_ifset([AC_PACKAGE_URL],
1152	m4_if(m4_index(m4_defn([AC_PACKAGE_NAME]), [GNU ]), [0], [	1137	[m4_defn([AC_PACKAGE_NAME]) home page: m4_defn([AC_PACKAGE_URL])
1153	General help using GNU software: <https://www.gnu.org/gethelp/>.])])	1138	])])dnl
		1139	m4_if(m4_index(m4_defn([AC_PACKAGE_NAME]), [GNU ]), [0],
		1140	[General help using GNU software: <https://www.gnu.org/gethelp/>.
		1141	])dnl
1154	_ACEOF	1142	_ACEOF
1155	ac_status=$?	1143	ac_status=$?
1156	fi	1144	fi
Lines 1189-1197 m4_define([_AC_INIT_VERSION], Link Here
1189	[m4_divert_text([VERSION_BEGIN],	1177	[m4_divert_text([VERSION_BEGIN],
1190	[if $ac_init_version; then	1178	[if $ac_init_version; then
1191	cat <<\_ACEOF	1179	cat <<\_ACEOF
1192	m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])configure[]dnl	1180	m4_ifset([AC_PACKAGE_NAME], [m4_defn([AC_PACKAGE_NAME]) ])configure[]dnl
1193	m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])	1181	m4_ifset([AC_PACKAGE_VERSION], [ m4_defn([AC_PACKAGE_VERSION])])
1194	generated by m4_PACKAGE_STRING])	1182	generated by m4_defn([m4_PACKAGE_STRING])])
1195	m4_divert_text([VERSION_END],	1183	m4_divert_text([VERSION_END],
1196	[_ACEOF	1184	[_ACEOF
1197	exit	1185	exit
Lines 1230-1238 cat >config.log <<_ACEOF Link Here
1230	This file contains any messages produced by compilers while	1218	This file contains any messages produced by compilers while
1231	running configure, to aid debugging if configure makes a mistake.	1219	running configure, to aid debugging if configure makes a mistake.
1232		1220
1233	It was created by m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])dnl	1221	It was created by m4_ifset([AC_PACKAGE_NAME], [m4_defn([AC_PACKAGE_NAME]) ])dnl
1234	$as_me[]m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION]), which was	1222	$as_me[]m4_ifset([AC_PACKAGE_VERSION],
1235	generated by m4_PACKAGE_STRING. Invocation command line was	1223	[ m4_defn([AC_PACKAGE_VERSION])]), which was
		1224	generated by m4_defn([m4_PACKAGE_STRING]). Invocation command line was
1236		1225
1237	$ $[0]$ac_configure_args_raw	1226	$ $[0]$ac_configure_args_raw
1238		1227
Lines 1446-1452 m4_define([_AS_FORCE_REEXEC_WITH_CONFIG_SHELL], [yes]) Link Here
1446	AS_INIT[]dnl	1435	AS_INIT[]dnl
1447	AS_PREPARE[]dnl	1436	AS_PREPARE[]dnl
1448	m4_divert_push([KILL])	1437	m4_divert_push([KILL])
1449	m4_ifval([$2], [_AC_INIT_PACKAGE($@)])	1438	_AC_INIT_PACKAGE($@)
1450	_AC_INIT_DEFAULTS	1439	_AC_INIT_DEFAULTS
1451	_AC_INIT_PARSE_ARGS	1440	_AC_INIT_PARSE_ARGS
1452	_AC_INIT_DIRCHECK	1441	_AC_INIT_DIRCHECK

Lines 238-273 AT_CLEANUP Link Here

(-)a/tests/base.at (-12 / +173 lines)
238		238
239	AT_SETUP([AC_INIT with unusual version strings])	239	AT_SETUP([AC_INIT with unusual version strings])
240		240
		241	if echo 'abc' \| grep -F 'abc' >/dev/null 2>&1; then
		242	FGREP="grep -F"
		243	else
		244	FGREP=fgrep
		245	fi
		246
		247	# In both of the arguments that might contain URLs, make sure we test
		248	# all of the unusual ASCII characters that commonly appear in URLs.
		249	# The RFC 3986 "unreserved" characters are ASCII letters and digits, plus
		250	# - . _ ~
		251	# The RFC 3986 "gen-delims" and "sub-delims" are
		252	# / : ? # [ ] @ ! $ & ' ( ) * + , ; =
		253	# The URL escape character is
		254	# %
		255	# Characters that are still significant for Bourne shell within a
		256	# single-quoted string, double-quoted string, quoted here-doc, or
		257	# unquoted here-doc are explicitly not allowed:
		258	# ' $
		259	# Also, we don't test unbalanced parentheses or brackets here.
		260
241	AT_DATA([configure.ac],	261	AT_DATA([configure.ac],
242	[[AC_INIT([GNU String++ with spaces (foo)],	262	[[AC_INIT([GNU String++ with spaces
		263	(foo)],
243	[2.48++ (2010-07-03)],	264	[2.48++ (2010-07-03)],
244	[[https://example.com/?a=b&c=d#e]],	265	[https://example/~bug/cdfijknoqrvw/-._:@!()[]*+,;/?y=z#1234567890
		266	],
245	[string++],	267	[string++],
246	[[https://example.com/?f=g&h=i%2fj#42]])	268	[HTTPS://EXAMPLE/~PKG/BCDFIJNOQRUVW/-._:@!()[]*+,;/?y=z#1234567890
		269	])
247	AC_OUTPUT	270	AC_OUTPUT
248	]])	271	]])
249		272
250	if echo 'abc' \| grep -F 'abc' >/dev/null 2>&1; then	273	AT_CHECK_AUTOCONF([-Werror])
251	FGREP="grep -F"	274	AT_CHECK_CONFIGURE([-q])
252	else	275
253	FGREP=fgrep	276	AT_CHECK_CONFIGURE([--help], [], [stdout])
254	fi	277	AT_CHECK([[$FGREP \
		278	'https://example/~bug/cdfijknoqrvw/-._:@!()[]*+,;/?y=z#1234567890' \
		279	stdout]], [], [ignore])
		280	AT_CHECK([[$FGREP \
		281	'HTTPS://EXAMPLE/~PKG/BCDFIJNOQRUVW/-._:@!()[]*+,;/?y=z#1234567890' \
		282	stdout]], [], [ignore])
		283
		284	AT_CHECK_CONFIGURE([--version], [], [stdout])
		285	AT_CHECK([$FGREP 'GNU String++ with spaces (foo)' stdout], [], [ignore])
		286	AT_CHECK([$FGREP '2.48++ (2010-07-03)' stdout], [], [ignore])
		287
		288	AT_CHECK([./config.status --help], [], [stdout])
		289	AT_CHECK([[$FGREP \
		290	'https://example/~bug/cdfijknoqrvw/-._:@!()[]*+,;/?y=z#1234567890' \
		291	stdout]], [], [ignore])
		292	AT_CHECK([[$FGREP \
		293	'HTTPS://EXAMPLE/~PKG/BCDFIJNOQRUVW/-._:@!()[]*+,;/?y=z#1234567890' \
		294	stdout]], [], [ignore])
		295
		296	AT_CHECK([./config.status --version], [], [stdout])
		297	AT_CHECK([$FGREP 'GNU String++ with spaces (foo)' stdout], [], [ignore])
		298	AT_CHECK([$FGREP '2.48++ (2010-07-03)' stdout], [], [ignore])
		299
		300	# Repeat the above test using all the unusual characters that might appear
		301	# in a list of email addresses in both BUG-REPORT and URL. (URL isn't
		302	# supposed to contain email addresses, but there's no good reason to
		303	# restrict its syntax.)
		304	# The RFC 5822 "atext" characters are ASCII letters and digits, plus
		305	# ! # $ % & ' * + - / = ? ^ _ ` { \| } ~
		306	# The RFC 5822 "special" characters, all of which might appear somewhere
		307	# in an address list, are
		308	# ( ) < > [ ] : ; @ \ , . "
		309	# As above, characters that are significant for Bourne shell within
		310	# strings and heredocs are explicitly not allowed:
		311	# ' " ` \ $
		312	# Whitespace is allowed but collapsed (just like AC_INIT does itself).
		313	AT_DATA([configure.ac],
		314	[[AC_INIT([GNU String++ with spaces
		315	(foo)],
		316	[2.48++ (2010-07-03)],
		317	[bugs: fred <A=B?C^D_E@F>,
		318	G!H!I#J@K.L (wilma),
		319	M%N&O@[156.247.38.49],
		320	P*Q+R-S/T@U,
		321	{jon\|chyp~}@kqtvxz.VWXYZ;],
		322	[string++],
		323	[contact: jem <A=B?C^D_E@bd>,
		324	F!G!H#I@fv.J (lugh),
		325	K%L&M@[156.247.38.49],
		326	N*O+P-Q/R@STU,
		327	{qik\|~prys}@wxz.VWXYZ;])
		328	AC_OUTPUT
		329	]])
255		330
256	AT_CHECK_AUTOCONF([-Werror])	331	AT_CHECK_AUTOCONF([-Werror])
257	AT_CHECK_CONFIGURE([-q])	332	AT_CHECK_CONFIGURE([-q])
		333
258	AT_CHECK_CONFIGURE([--help], [], [stdout])	334	AT_CHECK_CONFIGURE([--help], [], [stdout])
259	AT_CHECK([[$FGREP 'com/?a=b&c=d#e' stdout]], [], [ignore])	335	AT_CHECK([[$FGREP \
260	AT_CHECK([[$FGREP 'com/?f=g&h=i%2fj#42' stdout]], [], [ignore])	336	'bugs: fred <A=B?C^D_E@F>, G!H!I#J@K.L (wilma), M%N&O@[156.247.38.49], P*Q+R-S/T@U, {jon\|chyp~}@kqtvxz.VWXYZ;' \
		337	stdout]], [], [ignore])
		338	AT_CHECK([[$FGREP \
		339	'contact: jem <A=B?C^D_E@bd>, F!G!H#I@fv.J (lugh), K%L&M@[156.247.38.49], N*O+P-Q/R@STU, {qik\|~prys}@wxz.VWXYZ;' \
		340	stdout]], [], [ignore])
		341
261	AT_CHECK_CONFIGURE([--version], [], [stdout])	342	AT_CHECK_CONFIGURE([--version], [], [stdout])
262	AT_CHECK([$FGREP 'GNU String++ with spaces (foo)' stdout], [], [ignore])	343	AT_CHECK([$FGREP 'GNU String++ with spaces (foo)' stdout], [], [ignore])
263	AT_CHECK([$FGREP '2.48++ (2010-07-03)' stdout], [], [ignore])	344	AT_CHECK([$FGREP '2.48++ (2010-07-03)' stdout], [], [ignore])
264		345
265	AT_CHECK([./config.status --help], [], [stdout])	346	AT_CHECK([./config.status --help], [], [stdout])
266	AT_CHECK([[$FGREP 'com/?a=b&c=d#e' stdout]], [], [ignore])	347	AT_CHECK([[$FGREP \
		348	'bugs: fred <A=B?C^D_E@F>, G!H!I#J@K.L (wilma), M%N&O@[156.247.38.49], P*Q+R-S/T@U, {jon\|chyp~}@kqtvxz.VWXYZ;' \
		349	stdout]], [], [ignore])
		350	AT_CHECK([[$FGREP \
		351	'contact: jem <A=B?C^D_E@bd>, F!G!H#I@fv.J (lugh), K%L&M@[156.247.38.49], N*O+P-Q/R@STU, {qik\|~prys}@wxz.VWXYZ;' \
		352	stdout]], [], [ignore])
		353
267	AT_CHECK([./config.status --version], [], [stdout])	354	AT_CHECK([./config.status --version], [], [stdout])
268	AT_CHECK([$FGREP 'GNU String++ with spaces (foo)' stdout], [], [ignore])	355	AT_CHECK([$FGREP 'GNU String++ with spaces (foo)' stdout], [], [ignore])
269	AT_CHECK([$FGREP '2.48++ (2010-07-03)' stdout], [], [ignore])	356	AT_CHECK([$FGREP '2.48++ (2010-07-03)' stdout], [], [ignore])
270		357
		358	# Check for invalid characters in each argument.
271	AT_DATA([configure.ac],	359	AT_DATA([configure.ac],
272	[[AC_INIT([GNU "String++"],	360	[[AC_INIT([GNU "String++"],
273	[2.48], [https://example.com/], [string++])	361	[2.48], [https://example.com/], [string++])
Lines 347-352 AC_OUTPUT Link Here
347	AT_CHECK_AUTOCONF([-Werror], [1], [ignore], [stderr])	435	AT_CHECK_AUTOCONF([-Werror], [1], [ignore], [stderr])
348	AT_CHECK([grep 'AC_INIT: unsafe as a filename: ' stderr], [], [ignore])	436	AT_CHECK([grep 'AC_INIT: unsafe as a filename: ' stderr], [], [ignore])
349		437
		438	# Commas and unbalanced close parentheses are especially troublesome for M4.
		439
		440	AT_DATA([configure.ac],
		441	[[AC_INIT([GNU, String], [2.48], [bugs@gstring.example],
		442	[string], [https://gstring.example/])
		443	AC_OUTPUT
		444	]])
		445	AT_CHECK_AUTOCONF
		446
		447	AT_DATA([configure.ac],
		448	[[AC_INIT([GNU String)], [2.48], [bugs@gstring.example],
		449	[string], [https://gstring.example/])
		450	AC_OUTPUT
		451	]])
		452	AT_CHECK_AUTOCONF
		453
		454	AT_DATA([configure.ac],
		455	[[AC_INIT([GNU String], [2,48], [bugs@gstring.example],
		456	[string], [https://gstring.example/])
		457	AC_OUTPUT
		458	]])
		459	AT_CHECK_AUTOCONF
		460
		461	AT_DATA([configure.ac],
		462	[[AC_INIT([GNU String], [2.48)], [bugs@gstring.example],
		463	[string], [https://gstring.example/])
		464	AC_OUTPUT
		465	]])
		466	AT_CHECK_AUTOCONF
		467
		468	AT_DATA([configure.ac],
		469	[[AC_INIT([GNU String], [2.48], [bugs@gstring.example,
		470	gstring-bugs@example.com],
		471	[string], [https://gstring.example/])
		472	AC_OUTPUT
		473	]])
		474	AT_CHECK_AUTOCONF
		475
		476	AT_DATA([configure.ac],
		477	[[AC_INIT([GNU String], [2.48], [bugs)@gstring.example],
		478	[string], [https://gstring.example/])
		479	AC_OUTPUT
		480	]])
		481	AT_CHECK_AUTOCONF
		482
		483	AT_DATA([configure.ac],
		484	[[AC_INIT([GNU String], [2.48], [bugs@gstring.example],
		485	[string,], [https://gstring.example/])
		486	AC_OUTPUT
		487	]])
		488	AT_CHECK_AUTOCONF
		489
		490	AT_DATA([configure.ac],
		491	[[AC_INIT([GNU String], [2.48], [bugs@gstring.example],
		492	[string)], [https://gstring.example/])
		493	AC_OUTPUT
		494	]])
		495	AT_CHECK_AUTOCONF([], [0], [ignore], [stderr])
		496	AT_CHECK([grep 'AC_INIT: unsafe as a filename: ' stderr], [], [ignore])
		497
		498	AT_DATA([configure.ac],
		499	[[AC_INIT([GNU String], [2.48], [bugs@gstring.example],
		500	[string], [https://gstring.example/docs,html])
		501	AC_OUTPUT
502	]])
503	AT_CHECK_AUTOCONF
504
505
506	AT_DATA([configure.ac],
507	[[AC_INIT([GNU String], [2.48], [bugs@gstring.example],
508	[string], [https://gstring.example/weird)/path])
509	AC_OUTPUT
510	]])
511	AT_CHECK_AUTOCONF
350		512
351	AT_CLEANUP	513	AT_CLEANUP
352		514
353	-