FM / bin

/usr/bin

Name	Size	Mode	Actions
aclocal	36376	0755	edit dl rm
aclocal-1.16	36376	0755	edit dl rm
addr2line	28408	0755	edit dl rm
agentxtrap	27960	0755	edit dl rm
animate	15456	0755	edit dl rm
ar	57328	0755	edit dl rm
arch	32224	0755	edit dl rm
arpaname	15472	0755	edit dl rm
as	727360	0755	edit dl rm
aspell	154744	0755	edit dl rm
at	6009	0755	edit dl rm
atq	6011	0755	edit dl rm
atrm	6013	0755	edit dl rm
autoconf	14771	0755	edit dl rm
autoheader	8534	0755	edit dl rm
autom4te	32181	0755	edit dl rm
automake	257981	0755	edit dl rm
automake-1.16	257981	0755	edit dl rm
autoreconf	21066	0755	edit dl rm
autoscan	17124	0755	edit dl rm
autoupdate	33872	0755	edit dl rm
awk	714928	0755	edit dl rm
b2sum	52832	0755	edit dl rm
base32	36344	0755	edit dl rm
base64	36344	0755	edit dl rm
basename	32240	0755	edit dl rm
basenc	48976	0755	edit dl rm
bash	1389024	0755	edit dl rm
bashbug-64	7079	0755	edit dl rm
batch	140	0755	edit dl rm
bison	506632	0755	edit dl rm
bunzip2	40392	0755	edit dl rm
bzcat	40392	0755	edit dl rm
bzcmp	2144	0755	edit dl rm
bzdiff	2144	0755	edit dl rm
bzgrep	2058	0755	edit dl rm
bzip2	40392	0755	edit dl rm
bzip2recover	15592	0755	edit dl rm
bzless	1263	0755	edit dl rm
bzmore	1263	0755	edit dl rm
c++	1097224	0755	edit dl rm
c++filt	27840	0755	edit dl rm
c89	228	0755	edit dl rm
c99	219	0755	edit dl rm
cagefs_enter.proxied	6029	0755	edit dl rm
cal	53064	0755	edit dl rm
captoinfo	89896	0755	edit dl rm
cat	36312	0755	edit dl rm
catchsegv	3289	0755	edit dl rm
cc	1093128	0755	edit dl rm
chcon	61488	0755	edit dl rm
chgrp	57320	0755	edit dl rm
chmod	57304	0755	edit dl rm
chown	61432	0755	edit dl rm
chrt	27960	0755	edit dl rm
cksum	32136	0755	edit dl rm
cldetect	11222	0755	edit dl rm
clear	15512	0755	edit dl rm
cloudlinux-awp-user	1818	0755	edit dl rm
clwpos-user	1818	0755	edit dl rm
cmp	41096	0755	edit dl rm
col	23792	0755	edit dl rm
colcrt	15552	0755	edit dl rm
colrm	15528	0755	edit dl rm
column	36184	0755	edit dl rm
comm	36408	0755	edit dl rm
compare	15456	0755	edit dl rm
composite	15456	0755	edit dl rm
conjure	15464	0755	edit dl rm
convert	15464	0755	edit dl rm
cp	144400	0755	edit dl rm
cpan	8571	0755	edit dl rm
cpp	1097224	0755	edit dl rm
crontab	5826	0755	edit dl rm
crontab.cagefs	41440	0755	edit dl rm
csplit	111272	0755	edit dl rm
curl	254456	0755	edit dl rm
cut	44656	0755	edit dl rm
cyrusbdb2current	1651824	0755	edit dl rm
date	106336	0755	edit dl rm
dbiprof	6206	0755	edit dl rm
dd	69576	0755	edit dl rm
delv	45544	0755	edit dl rm
df	82464	0755	edit dl rm
diff	199368	0755	edit dl rm
diff3	53560	0755	edit dl rm
dig	139872	0755	edit dl rm
dir	140752	0755	edit dl rm
dircolors	40568	0755	edit dl rm
dirname	27952	0755	edit dl rm
display	15456	0755	edit dl rm
dnstap-read	23744	0755	edit dl rm
du	152848	0755	edit dl rm
echo	27944	0755	edit dl rm
ed	53768	0755	edit dl rm
egrep	32	0755	edit dl rm
enc2xs	41663	0755	edit dl rm
enchant	24296	0755	edit dl rm
enchant-lsmod	16184	0755	edit dl rm
env	45088	0755	edit dl rm
eps2eps	643	0755	edit dl rm
eqn	194064	0755	edit dl rm
ex	1452256	0755	edit dl rm
expand	40488	0755	edit dl rm
expr	111040	0755	edit dl rm
factor	73592	0755	edit dl rm
false	27936	0755	edit dl rm
fc-cache	139	0755	edit dl rm
fc-cache-64	23728	0755	edit dl rm
fc-cat	19616	0755	edit dl rm
fc-conflist	15496	0755	edit dl rm
fc-list	15496	0755	edit dl rm
fc-match	15496	0755	edit dl rm
fc-pattern	15504	0755	edit dl rm
fc-query	15496	0755	edit dl rm
fc-scan	15504	0755	edit dl rm
fc-validate	15504	0755	edit dl rm
fgrep	32	0755	edit dl rm
file	28288	0755	edit dl rm
find	291792	0755	edit dl rm
flex	422544	0755	edit dl rm
flex++	422544	0755	edit dl rm
flock	23928	0755	edit dl rm
fmt	40528	0755	edit dl rm
fold	40456	0755	edit dl rm
free	23920	0755	edit dl rm
freetype-config	4423	0755	edit dl rm
funzip	32000	0755	edit dl rm
g++	1097224	0755	edit dl rm
gawk	714928	0755	edit dl rm
gcc	1093128	0755	edit dl rm
gcc-ar	28336	0755	edit dl rm
gcc-nm	28312	0755	edit dl rm
gcc-ranlib	28336	0755	edit dl rm
gcov	488576	0755	edit dl rm
gcov-dump	298768	0755	edit dl rm
gcov-tool	328160	0755	edit dl rm
gencat	28104	0755	edit dl rm
geoiplookup	16248	0755	edit dl rm
geoiplookup6	16200	0755	edit dl rm
geqn	194064	0755	edit dl rm
GET	16200	0755	edit dl rm
getconf	36080	0755	edit dl rm
getent	36720	0755	edit dl rm
getopt	23824	0755	edit dl rm
ghostscript	15488	0755	edit dl rm
git	4397352	0755	edit dl rm
git-receive-pack	4397352	0755	edit dl rm
git-shell	826960	0755	edit dl rm
git-upload-archive	4397352	0755	edit dl rm
git-upload-pack	4397352	0755	edit dl rm
gm	16048	0755	edit dl rm
gmake	255792	0755	edit dl rm
gneqn	916	0755	edit dl rm
gnroff	3285	0755	edit dl rm
gpg	1123624	0755	edit dl rm
gpg-agent	350488	0755	edit dl rm
gpg-error	36968	0755	edit dl rm
gpgsplit	28160	0755	edit dl rm
gpgv	302520	0755	edit dl rm
gpic	206560	0755	edit dl rm
gprof	103920	0755	edit dl rm
grep	158200	0755	edit dl rm
groff	99088	0755	edit dl rm
grops	171272	0755	edit dl rm
grotty	125128	0755	edit dl rm
groups	36328	0755	edit dl rm
gs	15488	0755	edit dl rm
gsnd	281	0755	edit dl rm
gsoelim	-	0	edit dl rm
gtar	534824	0755	edit dl rm
gtbl	134000	0755	edit dl rm
gtroff	749640	0755	edit dl rm
gunzip	2350	0755	edit dl rm
gzexe	6484	0755	edit dl rm
gzip	91088	0755	edit dl rm
h2ph	29382	0755	edit dl rm
h2xs	60931	0755	edit dl rm
head	40560	0755	edit dl rm
hexdump	52640	0755	edit dl rm
host	111176	0755	edit dl rm
hostid	32224	0755	edit dl rm
hostname	24408	0755	edit dl rm
hunspell	105136	0755	edit dl rm
iconv	65624	0755	edit dl rm
icu-config	205	0755	edit dl rm
icu-config-64	22189	0755	edit dl rm
icuinfo	15864	0755	edit dl rm
id	40472	0755	edit dl rm
identify	15464	0755	edit dl rm
idn	36664	0755	edit dl rm
ifnames	4128	0755	edit dl rm
import	15456	0755	edit dl rm
infocmp	65208	0755	edit dl rm
infotocap	89896	0755	edit dl rm
install	152656	0755	edit dl rm
instmodsh	4194	0755	edit dl rm
ionice	15576	0755	edit dl rm
ipcrm	19688	0755	edit dl rm
ipcs	40280	0755	edit dl rm
isosize	15512	0755	edit dl rm
ispell	992	0755	edit dl rm
join	52928	0755	edit dl rm
kill	32032	0755	edit dl rm
ld	1791600	0755	edit dl rm
ld.bfd	1791600	0755	edit dl rm
ldd	5446	0755	edit dl rm
less	202440	0755	edit dl rm
lessecho	15536	0755	edit dl rm
lesskey	25200	0755	edit dl rm
lesspipe.sh	3580	0755	edit dl rm
lex	422544	0755	edit dl rm
libnetcfg	15775	0755	edit dl rm
libtool	367802	0755	edit dl rm
libtoolize	129200	0755	edit dl rm
link	32232	0755	edit dl rm
ln	57288	0755	edit dl rm
locale	60496	0755	edit dl rm
localedef	321584	0755	edit dl rm
logger	36840	0755	edit dl rm
login	44504	0755	edit dl rm
logname	32224	0755	edit dl rm
look	19632	0755	edit dl rm
ls	140744	0755	edit dl rm
lto-dump	27882568	0755	edit dl rm
m4	246168	0755	edit dl rm
Mail	-	0	edit dl rm
mail	-	0	edit dl rm
mailx	-	0	edit dl rm
make	255792	0755	edit dl rm
make-dummy-cert	614	0755	edit dl rm
mariadb	5246200	0755	edit dl rm
mariadb-access	111961	0755	edit dl rm
mariadb-admin	5013392	0755	edit dl rm
mariadb-binlog	5303232	0755	edit dl rm
mariadb-check	5010424	0755	edit dl rm
mariadb-conv	4731024	0755	edit dl rm
mariadb-convert-table-format	4220	0755	edit dl rm
mariadb-dump	5107000	0755	edit dl rm
mariadb-dumpslow	8242	0755	edit dl rm
mariadb-embedded	24373096	0755	edit dl rm
mariadb-find-rows	3290	0755	edit dl rm
mariadb-hotcopy	35359	0755	edit dl rm
mariadb-import	5005256	0755	edit dl rm
mariadb-plugin	4705784	0755	edit dl rm
mariadb-secure-installation	13803	0755	edit dl rm
mariadb-setpermission	17977	0755	edit dl rm
mariadb-show	5003656	0755	edit dl rm
mariadb-slap	5023200	0755	edit dl rm
mariadb-tzinfo-to-sql	4709208	0755	edit dl rm
mariadb-waitpid	4696504	0755	edit dl rm
mcookie	27960	0755	edit dl rm
md5sum	40392	0755	edit dl rm
mesg	15504	0755	edit dl rm
mkdir	69760	0755	edit dl rm
mkfifo	40592	0755	edit dl rm
mknod	44728	0755	edit dl rm
mktemp	40568	0755	edit dl rm
mogrify	15464	0755	edit dl rm
montage	15464	0755	edit dl rm
more	44464	0755	edit dl rm
msql2mysql	1450	0755	edit dl rm
mv	144328	0755	edit dl rm
mysql	5246200	0755	edit dl rm
mysqlaccess	111961	0755	edit dl rm
mysqladmin	5013392	0755	edit dl rm
mysqlbinlog	5303232	0755	edit dl rm
mysqlcheck	5010424	0755	edit dl rm
mysqldump	5107000	0755	edit dl rm
mysqlimport	5005256	0755	edit dl rm
mysqlshow	5003656	0755	edit dl rm
mysql_config	4608	0755	edit dl rm
mysql_find_rows	3290	0755	edit dl rm
mysql_waitpid	4696504	0755	edit dl rm
mytop	73757	0755	edit dl rm
my_print_defaults	4697008	0755	edit dl rm
namei	23784	0755	edit dl rm
nano	354504	0755	edit dl rm
neqn	916	0755	edit dl rm
net-snmp-create-v3-user	3371	0755	edit dl rm
nice	36336	0755	edit dl rm
nl	102920	0755	edit dl rm
nm	45792	0755	edit dl rm
nohup	36248	0755	edit dl rm
nproc	36352	0755	edit dl rm
nroff	3285	0755	edit dl rm
nslookup	115224	0755	edit dl rm
nsupdate	73528	0755	edit dl rm
numfmt	56968	0755	edit dl rm
objcopy	189816	0755	edit dl rm
objdump	423000	0755	edit dl rm
od	65408	0755	edit dl rm
openssl	1122472	0755	edit dl rm
pango-list	19568	0755	edit dl rm
pango-segmentation	19584	0755	edit dl rm
pango-view	61616	0755	edit dl rm
passwd	6017	0755	edit dl rm
paste	36240	0755	edit dl rm
patch	199696	0755	edit dl rm
pathchk	36328	0755	edit dl rm
pdf2dsc	701	0755	edit dl rm
pdf2ps	913	0755	edit dl rm
perl	15488	0755	edit dl rm
perl5.32.1	15488	0755	edit dl rm
perlbug	44863	0755	edit dl rm
perldoc	118	0755	edit dl rm
perlivp	10813	0755	edit dl rm
perlml	14840	0755	edit dl rm
perlthanks	44863	0755	edit dl rm
pgrep	32176	0755	edit dl rm
php	937	0755	edit dl rm
pic	206560	0755	edit dl rm
piconv	8271	0755	edit dl rm
ping	91472	0755	edit dl rm
pinky	36264	0755	edit dl rm
pkg-config	335	0755	edit dl rm
pkill	32176	0755	edit dl rm
pl2pm	4533	0755	edit dl rm
pmap	36240	0755	edit dl rm
pod2html	4134	0755	edit dl rm
pod2man	15034	0755	edit dl rm
pod2text	10803	0755	edit dl rm
pod2usage	4107	0755	edit dl rm
podchecker	3658	0755	edit dl rm
post-grohtml	204552	0755	edit dl rm
pr	73832	0755	edit dl rm
pre-grohtml	95152	0755	edit dl rm
precat	5660	0755	edit dl rm
preunzip	5660	0755	edit dl rm
prezip	5660	0755	edit dl rm
prezip-bin	16064	0755	edit dl rm
printenv	32040	0755	edit dl rm
printf	52816	0755	edit dl rm
prove	13562	0755	edit dl rm
ps	144536	0755	edit dl rm
ps2ascii	635	0755	edit dl rm
ps2epsi	1268	0755	edit dl rm
ps2pdf	276	0755	edit dl rm
ps2pdf12	219	0755	edit dl rm
ps2pdf13	219	0755	edit dl rm
ps2pdf14	219	0755	edit dl rm
ps2pdfwr	1082	0755	edit dl rm
ps2ps	651	0755	edit dl rm
ps2ps2	673	0755	edit dl rm
ptx	131912	0755	edit dl rm
pwd	36376	0755	edit dl rm
pwdx	15648	0755	edit dl rm
pydoc	78	0755	edit dl rm
pydoc3	78	0755	edit dl rm
pydoc3.9	78	0755	edit dl rm
ranlib	57336	0755	edit dl rm
readelf	683296	0755	edit dl rm
readlink	40456	0755	edit dl rm
realpath	40536	0755	edit dl rm
recode	32696	0755	edit dl rm
red	92	0755	edit dl rm
rename	23784	0755	edit dl rm
renew-dummy-cert	729	0755	edit dl rm
renice	15528	0755	edit dl rm
replace	4679032	0755	edit dl rm
reset	27992	0755	edit dl rm
rev	15520	0755	edit dl rm
rm	61432	0755	edit dl rm
rmdir	44464	0755	edit dl rm
rnano	354504	0755	edit dl rm
run-with-aspell	89	0755	edit dl rm
runcon	36312	0755	edit dl rm
rvi	1452256	0755	edit dl rm
rview	1452256	0755	edit dl rm
scalar	876968	0755	edit dl rm
scl	40496	0755	edit dl rm
scl_enabled	262	0755	edit dl rm
scl_source	1929	0755	edit dl rm
scp	136104	0755	edit dl rm
script	52816	0755	edit dl rm
sdiff	45264	0755	edit dl rm
sed	115544	0755	edit dl rm
selectorctl	8276	0755	edit dl rm
seq	48736	0755	edit dl rm
setsid	15512	0755	edit dl rm
setterm	36176	0755	edit dl rm
sftp	160840	0755	edit dl rm
sh	1389024	0755	edit dl rm
sha1sum	40392	0755	edit dl rm
sha224sum	40392	0755	edit dl rm
sha256sum	40392	0755	edit dl rm
sha384sum	40392	0755	edit dl rm
sha512sum	40392	0755	edit dl rm
shred	52920	0755	edit dl rm
shuf	48952	0755	edit dl rm
size	32368	0755	edit dl rm
skill	32152	0755	edit dl rm
slabtop	23984	0755	edit dl rm
sleep	32224	0755	edit dl rm
snice	32152	0755	edit dl rm
snmpconf	26051	0755	edit dl rm
soelim	-	0	edit dl rm
sort	115608	0755	edit dl rm
spell	125	0755	edit dl rm
splain	19411	0755	edit dl rm
split	53360	0755	edit dl rm
sprof	36296	0755	edit dl rm
sqlite3	1610224	0755	edit dl rm
ssh	917880	0755	edit dl rm
ssh-add	313056	0755	edit dl rm
ssh-agent	325320	0755	edit dl rm
ssh-copy-id	14174	0755	edit dl rm
ssh-keygen	486832	0755	edit dl rm
ssh-keyscan	346352	0755	edit dl rm
stat	81768	0755	edit dl rm
stdbuf	44600	0755	edit dl rm
strace	2176664	0755	edit dl rm
stream	15456	0755	edit dl rm
strings	32504	0755	edit dl rm
strip	189808	0755	edit dl rm
stty	77456	0755	edit dl rm
sum	36232	0755	edit dl rm
sync	36200	0755	edit dl rm
tabs	19624	0755	edit dl rm
tac	102808	0755	edit dl rm
tail	69536	0755	edit dl rm
tar	534824	0755	edit dl rm
taskset	23784	0755	edit dl rm
tbl	134000	0755	edit dl rm
tclsh	16064	0755	edit dl rm
tclsh8.6	16064	0755	edit dl rm
tee	36344	0755	edit dl rm
test	44664	0755	edit dl rm
tic	89896	0755	edit dl rm
timeout	36848	0755	edit dl rm
tload	19800	0755	edit dl rm
tmpwatch	36896	0755	edit dl rm
toe	23784	0755	edit dl rm
top	135448	0755	edit dl rm
touch	94048	0755	edit dl rm
tput	27904	0755	edit dl rm
tr	44728	0755	edit dl rm
troff	749640	0755	edit dl rm
true	27936	0755	edit dl rm
truncate	36328	0755	edit dl rm
tset	27992	0755	edit dl rm
tsort	48744	0755	edit dl rm
tty	32224	0755	edit dl rm
tzselect	15352	0755	edit dl rm
uapi	6013	0755	edit dl rm
ul	23816	0755	edit dl rm
uname	32232	0755	edit dl rm
unexpand	40480	0755	edit dl rm
uniq	44680	0755	edit dl rm
unlink	32224	0755	edit dl rm
unzip	200688	0755	edit dl rm
unzipsfx	89808	0755	edit dl rm
uptime	15656	0755	edit dl rm
users	32256	0755	edit dl rm
utmpdump	23768	0755	edit dl rm
vdir	140752	0755	edit dl rm
vi	1452256	0755	edit dl rm
view	146	0755	edit dl rm
vmstat	40360	0755	edit dl rm
watch	28536	0755	edit dl rm
wc	44576	0755	edit dl rm
wget	533720	0755	edit dl rm
whereis	32608	0755	edit dl rm
which	28560	0755	edit dl rm
who	52832	0755	edit dl rm
whoami	32224	0755	edit dl rm
word-list-compress	16080	0755	edit dl rm
x86_64-redhat-linux-c++	1097224	0755	edit dl rm
x86_64-redhat-linux-g++	1097224	0755	edit dl rm
x86_64-redhat-linux-gcc	1093128	0755	edit dl rm
x86_64-redhat-linux-gcc-11	1093128	0755	edit dl rm
xargs	65632	0755	edit dl rm
xmlcatalog	23712	0755	edit dl rm
xmllint	82488	0755	edit dl rm
xmlwf	40576	0755	edit dl rm
xsltproc	31984	0755	edit dl rm
xsubpp	5080	0755	edit dl rm
yes	32064	0755	edit dl rm
zcat	1988	0755	edit dl rm
zcmp	1682	0755	edit dl rm
zdiff	6451	0755	edit dl rm
zegrep	33	0755	edit dl rm
zfgrep	33	0755	edit dl rm
zforce	2085	0755	edit dl rm
zgrep	8116	0755	edit dl rm
zip	226400	0755	edit dl rm
zipcloak	77512	0755	edit dl rm
zipgrep	2957	0755	edit dl rm
zipinfo	200688	0755	edit dl rm
zipnote	69232	0755	edit dl rm
zipsplit	65104	0755	edit dl rm
zless	2210	0755	edit dl rm
zmore	1846	0755	edit dl rm
znew	4581	0755	edit dl rm
zsoelim	-	0	edit dl rm
[	52872	0755	edit dl rm

Edit: /usr/bin/autom4te (32181B)

#! /usr/bin/perl -w
# -*- perl -*-
# Generated from autom4te.in; do not edit by hand.

eval 'case $# in 0) exec /usr/bin/perl -S "$0";; *) exec /usr/bin/perl -S "$0" "$@";; esac'
    if 0;

# autom4te - Wrapper around M4 libraries.
# Copyright (C) 2001-2003, 2005-2012 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 <http://www.gnu.org/licenses/>.

BEGIN
{
  my $pkgdatadir = $ENV{'autom4te_perllibdir'} || '/usr/share/autoconf';
  unshift @INC, $pkgdatadir;

# Override SHELL.  On DJGPP SHELL may not be set to a shell
  # that can handle redirection and quote arguments correctly,
  # e.g.: COMMAND.COM.  For DJGPP always use the shell that configure
  # has detected.
  $ENV{'SHELL'} = '/bin/sh' if ($^O eq 'dos');
}

use Autom4te::C4che;
use Autom4te::ChannelDefs;
use Autom4te::Channels;
use Autom4te::FileUtils;
use Autom4te::General;
use Autom4te::XFile;
use File::Basename;
use strict;

# Data directory.
my $pkgdatadir = $ENV{'AC_MACRODIR'} || '/usr/share/autoconf';

# $LANGUAGE{LANGUAGE} -- Automatic options for LANGUAGE.
my %language;

my $output = '-';

# Mode of the output file except for traces.
my $mode = "0666";

# If melt, don't use frozen files.
my $melt = 0;

# Names of the cache directory, cache directory index, trace cache
# prefix, and output cache prefix.  And the IO object for the index.
my $cache;
my $icache;
my $tcache;
my $ocache;
my $icache_file;

my $flock_implemented = 'yes';

# The macros to trace mapped to their format, as specified by the
# user.
my %trace;

# The macros the user will want to trace in the future.
# We need `include' to get the included file, `m4_pattern_forbid' and
# `m4_pattern_allow' to check the output.
#
# FIXME: What about `sinclude'?
my @preselect = ('include',
		 'm4_pattern_allow', 'm4_pattern_forbid',
		 '_m4_warn');

# M4 include path.
my @include;

# Do we freeze?
my $freeze = 0;

# $M4.
my $m4 = $ENV{"M4"} || '/usr/bin/m4';
# Some non-GNU m4's don't reject the --help option, so give them /dev/null.
fatal "need GNU m4 1.4 or later: $m4"
  if system "$m4 --help </dev/null 2>&1 | grep reload-state >/dev/null";

# Set some high recursion limit as the default limit, 250, has already
# been hit with AC_OUTPUT.  Don't override the user's choice.
$m4 .= ' --nesting-limit=1024'
  if " $m4 " !~ / (--nesting-limit(=[0-9]+)?|-L[0-9]*) /;

# @M4_BUILTIN -- M4 builtins and a useful comment.
my @m4_builtin = `echo dumpdef | $m4 2>&1 >/dev/null`;
map { s/:.*//;s/\W// } @m4_builtin;

# %M4_BUILTIN_ALTERNATE_NAME
# --------------------------
# The builtins are renamed, e.g., `define' is renamed `m4_define'.
# So map `define' to `m4_define' and conversely.
# Some macros don't follow this scheme: be sure to properly map to their
# alternate name too.
#
# FIXME: Trace status of renamed builtins was fixed in M4 1.4.5, which
# we now depend on; do we still need to do this mapping?
#
# So we will merge them, i.e., tracing `BUILTIN' or tracing
# `m4_BUILTIN' will be the same: tracing both, but honoring the
# *last* trace specification.
#
# FIXME: This is not enough: in the output `$0' will be `BUILTIN'
# sometimes and `m4_BUILTIN' at others.  We should return a unique name,
# the one specified by the user.
#
# FIXME: To be absolutely rigorous, I would say that given that we
# _redefine_ divert (instead of _copying_ it), divert and the like
# should not be part of this list.
my %m4_builtin_alternate_name;
@m4_builtin_alternate_name{"$_", "m4_$_"} = ("m4_$_", "$_")
  foreach (grep { !/m4wrap|m4exit|dnl|ifelse|__.*__/ } @m4_builtin);
@m4_builtin_alternate_name{"ifelse", "m4_if"}   = ("m4_if", "ifelse");
@m4_builtin_alternate_name{"m4exit", "m4_exit"} = ("m4_exit", "m4exit");
@m4_builtin_alternate_name{"m4wrap", "m4_wrap"} = ("m4_wrap", "m4wrap");

# $HELP
# -----
$help = "Usage: $0 [OPTION]... [FILES]

Run GNU M4 on the FILES, avoiding useless runs.  Output the traces if tracing,
the frozen file if freezing, otherwise the expansion of the FILES.

If some of the FILES are named \`FILE.m4f\' they are considered to be M4
frozen files of all the previous files (which are therefore not loaded).
If \`FILE.m4f\' is not found, then \`FILE.m4\' will be used, together with
all the previous files.

Some files may be optional, i.e., will only be processed if found in the
include path, but then must end in \`.m4?\';  the question mark is not part of
the actual file name.

Operation modes:
  -h, --help               print this help, then exit
  -V, --version            print version number, then exit
  -v, --verbose            verbosely report processing
  -d, --debug              don\'t remove temporary files
  -o, --output=FILE        save output in FILE (defaults to \`-\', stdout)
  -f, --force              don\'t rely on cached values
  -W, --warnings=CATEGORY  report the warnings falling in CATEGORY
  -l, --language=LANG      specify the set of M4 macros to use
  -C, --cache=DIRECTORY    preserve results for future runs in DIRECTORY
      --no-cache           disable the cache
  -m, --mode=OCTAL         change the non trace output file mode (0666)
  -M, --melt               don\'t use M4 frozen files

Languages include:
  \`Autoconf\'   create Autoconf configure scripts
  \`Autotest\'   create Autotest test suites
  \`M4sh\'       create M4sh shell scripts
  \`M4sugar\'    create M4sugar output

" . Autom4te::ChannelDefs::usage . "

The environment variables \`M4\' and \`WARNINGS\' are honored.

Library directories:
  -B, --prepend-include=DIR  prepend directory DIR to search path
  -I, --include=DIR          append directory DIR to search path

Tracing:
  -t, --trace=MACRO[:FORMAT]  report the MACRO invocations
  -p, --preselect=MACRO       prepare to trace MACRO in a future run

Freezing:
  -F, --freeze   produce an M4 frozen state file for FILES

FORMAT defaults to \`\$f:\$l:\$n:\$%\', and can use the following escapes:
  \$\$     literal \$
  \$f     file where macro was called
  \$l     line where macro was called
  \$d     nesting depth of macro call
  \$n     name of the macro
  \$NUM   argument NUM, unquoted and with newlines
  \$SEP\@  all arguments, with newlines, quoted, and separated by SEP
  \$SEP*  all arguments, with newlines, unquoted, and separated by SEP
  \$SEP%  all arguments, without newlines, unquoted, and separated by SEP
SEP can be empty for the default (comma for \@ and *, colon for %),
a single character for that character, or {STRING} to use a string.

Report bugs to <bug-autoconf\@gnu.org>.
GNU Autoconf home page: <http://www.gnu.org/software/autoconf/>.
General help using GNU software: <http://www.gnu.org/gethelp/>.
";

# $VERSION
# --------
$version =  <<"EOF";
autom4te (GNU Autoconf) 2.69
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+/Autoconf: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>, <http://gnu.org/licenses/exceptions.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Akim Demaille.
EOF

## ---------- ##
## Routines.  ##
## ---------- ##

# $OPTION
# files_to_options (@FILE)
# ------------------------
# Transform Autom4te conventions (e.g., using foo.m4f to designate a frozen
# file) into a suitable command line for M4 (e.g., using --reload-state).
# parse_args guarantees that we will see at most one frozen file, and that
# if a frozen file is present, it is the first argument.
sub files_to_options (@)
{
  my (@file) = @_;
  my @res;
  foreach my $file (@file)
    {
      my $arg = shell_quote ($file);
      if ($file =~ /\.m4f$/)
	{
	  $arg = "--reload-state=$arg";
	  # If the user downgraded M4 from 1.6 to 1.4.x after freezing
	  # the file, then we ensure the frozen __m4_version__ will
	  # not cause m4_init to make the wrong decision about the
	  # current M4 version.
	  $arg .= " --undefine=__m4_version__"
	    unless grep {/__m4_version__/} @m4_builtin;
	}
      push @res, $arg;
    }
  return join ' ', @res;
}

# load_configuration ($FILE)
# --------------------------
# Load the configuration $FILE.
sub load_configuration ($)
{
  my ($file) = @_;
  use Text::ParseWords;

my $cfg = new Autom4te::XFile ("< " . open_quote ($file));
  my $lang;
  while ($_ = $cfg->getline)
    {
      chomp;
      # Comments.
      next
	if /^\s*(\#.*)?$/;

my @words = shellwords ($_);
      my $type = shift @words;
      if ($type eq 'begin-language:')
	{
	  fatal "$file:$.: end-language missing for: $lang"
	    if defined $lang;
	  $lang = lc $words[0];
	}
      elsif ($type eq 'end-language:')
	{
	  error "$file:$.: end-language mismatch: $lang"
	    if $lang ne lc $words[0];
	  $lang = undef;
	}
      elsif ($type eq 'args:')
	{
	  fatal "$file:$.: no current language"
	    unless defined $lang;
	  push @{$language{$lang}}, @words;
	}
      else
	{
	  error "$file:$.: unknown directive: $type";
	}
    }
}

# parse_args ()
# -------------
# Process any command line arguments.
sub parse_args ()
{
  # We want to look for the early options, which should not be found
  # in the configuration file.  Prepend to the user arguments.
  # Perform this repeatedly so that we can use --language in language
  # definitions.  Beware that there can be several --language
  # invocations.
  my @language;
  do {
    @language = ();
    use Getopt::Long;
    Getopt::Long::Configure ("pass_through", "permute");
    GetOptions ("l|language=s" => \@language);

foreach (@language)
      {
	error "unknown language: $_"
	  unless exists $language{lc $_};
	unshift @ARGV, @{$language{lc $_}};
      }
  } while @language;

# --debug is useless: it is parsed below.
  if (exists $ENV{'AUTOM4TE_DEBUG'})
    {
      print STDERR "$me: concrete arguments:\n";
      foreach my $arg (@ARGV)
	{
	  print STDERR "| $arg\n";
	}
    }

# Process the arguments for real this time.
  my @trace;
  my @prepend_include;
  parse_WARNINGS;
  getopt
    (
     # Operation modes:
     "o|output=s"   => \$output,
     "W|warnings=s" => \&parse_warnings,
     "m|mode=s"     => \$mode,
     "M|melt"       => \$melt,

# Library directories:
     "B|prepend-include=s" => \@prepend_include,
     "I|include=s"         => \@include,

# Tracing:
     # Using a hash for traces is seducing.  Unfortunately, upon `-t FOO',
     # instead of mapping `FOO' to undef, Getopt maps it to `1', preventing
     # us from distinguishing `-t FOO' from `-t FOO=1'.  So let's do it
     # by hand.
     "t|trace=s"     => \@trace,
     "p|preselect=s" => \@preselect,

# Freezing.
     "F|freeze" => \$freeze,

# Caching.
     "C|cache=s" => \$cache,
     "no-cache"  => sub { $cache = undef; },
    );

fatal "too few arguments
Try `$me --help' for more information."
    unless @ARGV;

# Freezing:
  # We cannot trace at the same time (well, we can, but it sounds insane).
  # And it implies melting: there is risk not to update properly using
  # old frozen files, and worse yet: we could load a frozen file and
  # refreeze it!  A sort of caching :)
  fatal "cannot freeze and trace"
    if $freeze && @trace;
  $melt = 1
    if $freeze;

# Names of the cache directory, cache directory index, trace cache
  # prefix, and output cache prefix.  If the cache is not to be
  # preserved, default to a temporary directory (automatically removed
  # on exit).
  $cache = $tmp
    unless $cache;
  $icache = "$cache/requests";
  $tcache = "$cache/traces.";
  $ocache = "$cache/output.";

# Normalize the includes: the first occurrence is enough, several is
  # a pain since it introduces a useless difference in the path which
  # invalidates the cache.  And strip `.' which is implicit and always
  # first.
  @include = grep { !/^\.$/ } uniq (reverse(@prepend_include), @include);

# Convert @trace to %trace, and work around the M4 builtins tracing
  # problem.
  # The default format is `$f:$l:$n:$%'.
  foreach (@trace)
    {
      /^([^:]+)(?::(.*))?$/ms;
      $trace{$1} = defined $2 ? $2 : '$f:$l:$n:$%';
      $trace{$m4_builtin_alternate_name{$1}} = $trace{$1}
	if exists $m4_builtin_alternate_name{$1};
    }

# Work around the M4 builtins tracing problem for @PRESELECT.
  # FIXME: Is this still needed, now that we rely on M4 1.4.5?
  push (@preselect,
	map { $m4_builtin_alternate_name{$_} }
	grep { exists $m4_builtin_alternate_name{$_} } @preselect);

# If we find frozen files, then all the files before it are
  # discarded: the frozen file is supposed to include them all.
  #
  # We don't want to depend upon m4's --include to find the top level
  # files, so we use `find_file' here.  Try to get a canonical name,
  # as it's part of the key for caching.  And some files are optional
  # (also handled by `find_file').
  my @argv;
  foreach (@ARGV)
    {
      if ($_ eq '-')
	{
	  push @argv, $_;
	}
      elsif (/\.m4f$/)
	{
	  # Frozen files are optional => pass a `?' to `find_file'.
	  my $file = find_file ("$_?", @include);
	  if (!$melt && $file)
	    {
	      @argv = ($file);
	    }
	  else
	    {
	      s/\.m4f$/.m4/;
	      push @argv, find_file ($_, @include);
	    }
	}
      else
	{
	  my $file = find_file ($_, @include);
	  push @argv, $file
	    if $file;
	}
    }
  @ARGV = @argv;
}

# handle_m4 ($REQ, @MACRO)
# ------------------------
# Run m4 on the input files, and save the traces on the @MACRO.
sub handle_m4 ($@)
{
  my ($req, @macro) = @_;

# GNU m4 appends when using --debugfile/--error-output.
  unlink ($tcache . $req->id . "t");

# Run m4.
  #
  # We don't output directly to the cache files, to avoid problems
  # when we are interrupted (that leaves corrupted files).
  xsystem ("$m4 --gnu"
	   . join (' --include=', '', map { shell_quote ($_) } @include)
	   . ' --debug=aflq'
	   . (!exists $ENV{'AUTOM4TE_NO_FATAL'} ? ' --fatal-warning' : '')
	   . " --debugfile=" . shell_quote ("$tcache" . $req->id . "t")
	   . join (' --trace=', '', map { shell_quote ($_) } sort @macro)
	   . " " . files_to_options (@ARGV)
	   . " > " . shell_quote ("$ocache" . $req->id . "t"));

# Everything went ok: preserve the outputs.
  foreach my $file (map { $_ . $req->id } ($tcache, $ocache))
    {
      use File::Copy;
      move ("${file}t", "$file")
	or fatal "cannot rename ${file}t as $file: $!";
    }
}

# warn_forbidden ($WHERE, $WORD, %FORBIDDEN)
# ------------------------------------------
# $WORD is forbidden.  Warn with a dedicated error message if in
# %FORBIDDEN, otherwise a simple `error: possibly undefined macro'
# will do.
my $first_warn_forbidden = 1;
sub warn_forbidden ($$%)
{
  my ($where, $word, %forbidden) = @_;
  my $message;

for my $re (sort keys %forbidden)
    {
      if ($word =~ $re)
	{
	  $message = $forbidden{$re};
	  last;
	}
    }
  $message ||= "possibly undefined macro: $word";
  warn "$where: error: $message\n";
  if ($first_warn_forbidden)
    {
      warn <<EOF;
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
EOF
      $first_warn_forbidden = 0;
    }
}

# handle_output ($REQ, $OUTPUT)
# -----------------------------
# Run m4 on the input files, perform quadrigraphs substitution, check for
# forbidden tokens, and save into $OUTPUT.
sub handle_output ($$)
{
  my ($req, $output) = @_;

verb "creating $output";

# Load the forbidden/allowed patterns.
  handle_traces ($req, "$tmp/patterns",
		 ('m4_pattern_forbid' => 'forbid:$1:$2',
		  'm4_pattern_allow'  => 'allow:$1'));
  my @patterns = new Autom4te::XFile ("< " . open_quote ("$tmp/patterns"))->getlines;
  chomp @patterns;
  my %forbidden =
    map { /^forbid:([^:]+):.+$/ => /^forbid:[^:]+:(.+)$/ } @patterns;
  my $forbidden = join ('|', map { /^forbid:([^:]+)/ } @patterns) || "^\$";
  my $allowed   = join ('|', map { /^allow:([^:]+)/  } @patterns) || "^\$";

verb "forbidden tokens: $forbidden";
  verb "forbidden token : $_ => $forbidden{$_}"
    foreach (sort keys %forbidden);
  verb "allowed   tokens: $allowed";

# Read the (cached) raw M4 output, produce the actual result.  We
  # have to use the 2nd arg to have Autom4te::XFile honor the third, but then
  # stdout is to be handled by hand :(.  Don't use fdopen as it means
  # we will close STDOUT, which we already do in END.
  my $out = new Autom4te::XFile;
  if ($output eq '-')
    {
      $out->open (">$output");
    }
  else
    {
      $out->open($output, O_CREAT | O_WRONLY | O_TRUNC, oct ($mode));
    }
  fatal "cannot create $output: $!"
    unless $out;
  my $in = new Autom4te::XFile ("< " . open_quote ($ocache . $req->id));

my %prohibited;
  my $res;
  while ($_ = $in->getline)
    {
      s/\s+$//;
      s/__oline__/$./g;
      s/\@<:\@/[/g;
      s/\@:>\@/]/g;
      s/\@\{:\@/(/g;
      s/\@:\}\@/)/g;
      s/\@S\|\@/\$/g;
      s/\@%:\@/#/g;

$res = $_;

# Don't complain in comments.  Well, until we have something
      # better, don't consider `#include' etc. are comments.
      s/\#.*//
	unless /^\#\s*(if|include|endif|ifdef|ifndef|define)\b/;
      foreach (split (/\W+/))
	{
	  $prohibited{$_} = $.
	    if !/^$/ && /$forbidden/o && !/$allowed/o && ! exists $prohibited{$_};
	}

# Performed *last*: the empty quadrigraph.
      $res =~ s/\@&t\@//g;

print $out "$res\n";
    }

$out->close();

# If no forbidden words, we're done.
  return
    if ! %prohibited;

# Locate the forbidden words in the last input file.
  # This is unsatisfying but...
  $exit_code = 1;
  if ($ARGV[$#ARGV] ne '-')
    {
      my $prohibited = '\b(' . join ('|', keys %prohibited) . ')\b';
      my $file = new Autom4te::XFile ("< " . open_quote ($ARGV[$#ARGV]));

while ($_ = $file->getline)
	{
	  # Don't complain in comments.  Well, until we have something
	  # better, don't consider `#include' etc. to be comments.
	  s/\#.*//
	    unless /^\#(if|include|endif|ifdef|ifndef|define)\b/;

# Complain once per word, but possibly several times per line.
	  while (/$prohibited/)
	    {
	      my $word = $1;
	      warn_forbidden ("$ARGV[$#ARGV]:$.", $word, %forbidden);
	      delete $prohibited{$word};
	      # If we're done, exit.
	      return
		if ! %prohibited;
	      $prohibited = '\b(' . join ('|', keys %prohibited) . ')\b';
	    }
	}
    }
  warn_forbidden ("$output:$prohibited{$_}", $_, %forbidden)
    foreach (sort { $prohibited{$a} <=> $prohibited{$b} } keys %prohibited);
}

## --------------------- ##
## Handling the traces.  ##
## --------------------- ##

# $M4_MACRO
# trace_format_to_m4 ($FORMAT)
# ----------------------------
# Convert a trace $FORMAT into a M4 trace processing macro's body.
sub trace_format_to_m4 ($)
{
  my ($format) = @_;
  my $underscore = $_;
  my %escape = (# File name.
		'f' => '$1',
		# Line number.
		'l' => '$2',
		# Depth.
		'd' => '$3',
		# Name (also available as $0).
		'n' => '$4',
		# Escaped dollar.
		'$' => '$');

my $res = '';
  $_ = $format;
  while ($_)
    {
      # $n -> $(n + 4)
      if (s/^\$(\d+)//)
	{
	  $res .= "\$" . ($1 + 4);
	}
      # $x, no separator given.
      elsif (s/^\$([fldn\$])//)
	{
	  $res .= $escape{$1};
	}
      # $.x or ${sep}x.
      elsif (s/^\$\{([^}]*)\}([@*%])//
	    || s/^\$(.?)([@*%])//)
	{
	  # $@, list of quoted effective arguments.
	  if ($2 eq '@')
	    {
	      $res .= ']at_at([' . ($1 ? $1 : ',') . '], $@)[';
	    }
	  # $*, list of unquoted effective arguments.
	  elsif ($2 eq '*')
	    {
	      $res .= ']at_star([' . ($1 ? $1 : ',') . '], $@)[';
	    }
	  # $%, list of flattened unquoted effective arguments.
	  elsif ($2 eq '%')
	    {
	      $res .= ']at_percent([' . ($1 ? $1 : ':') . '], $@)[';
	    }
	}
      elsif (/^(\$.)/)
	{
	  error "invalid escape: $1";
	}
      else
	{
	  s/^([^\$]+)//;
	  $res .= $1;
	}
    }

$_ = $underscore;
  return '[[' . $res . ']]';
}

# handle_traces($REQ, $OUTPUT, %TRACE)
# ------------------------------------
# We use M4 itself to process the traces.  But to avoid name clashes when
# processing the traces, the builtins are disabled, and moved into `at_'.
# Actually, all the low level processing macros are in `at_' (and `_at_').
# To avoid clashes between user macros and `at_' macros, the macros which
# implement tracing are in `AT_'.
#
# Having $REQ is needed to neutralize the macros which have been traced,
# but are not wanted now.
sub handle_traces ($$%)
{
  my ($req, $output, %trace) = @_;

verb "formatting traces for `$output': " . join (', ', sort keys %trace);

# Processing the traces.
  my $trace_m4 = new Autom4te::XFile ("> " . open_quote ("$tmp/traces.m4"));

$_ = <<'EOF';
  divert(-1)
  changequote([, ])
  # _at_MODE(SEPARATOR, ELT1, ELT2...)
  # ----------------------------------
  # List the elements, separating then with SEPARATOR.
  # MODE can be:
  #  `at'       -- the elements are enclosed in brackets.
  #  `star'     -- the elements are listed as are.
  #  `percent'  -- the elements are `flattened': spaces are singled out,
  #                and no new line remains.
  define([_at_at],
  [at_ifelse([$#], [1], [],
	     [$#], [2], [[[$2]]],
	     [[[$2]][$1]$0([$1], at_shift(at_shift($@)))])])

define([_at_percent],
  [at_ifelse([$#], [1], [],
	     [$#], [2], [at_flatten([$2])],
	     [at_flatten([$2])[$1]$0([$1], at_shift(at_shift($@)))])])

define([_at_star],
  [at_ifelse([$#], [1], [],
	     [$#], [2], [[$2]],
	     [[$2][$1]$0([$1], at_shift(at_shift($@)))])])

# FLATTEN quotes its result.
  # Note that the second pattern is `newline, tab or space'.  Don't lose
  # the tab!
  define([at_flatten],
  [at_patsubst(at_patsubst([[[$1]]], [\\\n]), [[\n\t ]+], [ ])])

define([at_args],    [at_shift(at_shift(at_shift(at_shift(at_shift($@)))))])
  define([at_at],      [_$0([$1], at_args($@))])
  define([at_percent], [_$0([$1], at_args($@))])
  define([at_star],    [_$0([$1], at_args($@))])

EOF
  s/^  //mg;s/\\t/\t/mg;s/\\n/\n/mg;
  print $trace_m4 $_;

# If you trace `define', then on `define([m4_exit], defn([m4exit])' you
  # will produce
  #
  #    AT_define([m4sugar.m4], [115], [1], [define], [m4_exit], <m4exit>)
  #
  # Since `<m4exit>' is not quoted, the outer m4, when processing
  # `trace.m4' will exit prematurely.  Hence, move all the builtins to
  # the `at_' name space.

print $trace_m4 "# Copy the builtins.\n";
  map { print $trace_m4 "define([at_$_], defn([$_]))\n" } @m4_builtin;
  print $trace_m4 "\n";

print $trace_m4 "# Disable them.\n";
  map { print $trace_m4 "at_undefine([$_])\n" } @m4_builtin;
  print $trace_m4 "\n";

# Neutralize traces: we don't want traces of cached requests (%REQUEST).
  print $trace_m4
   "## -------------------------------------- ##\n",
   "## By default neutralize all the traces.  ##\n",
   "## -------------------------------------- ##\n",
   "\n";
  print $trace_m4 "at_define([AT_$_], [at_dnl])\n"
    foreach (sort keys %{$req->macro});
  print $trace_m4 "\n";

# Implement traces for current requests (%TRACE).
  print $trace_m4
    "## ------------------------- ##\n",
    "## Trace processing macros.  ##\n",
    "## ------------------------- ##\n",
    "\n";
  foreach (sort keys %trace)
    {
      # Trace request can be embed \n.
      (my $comment = "Trace $_:$trace{$_}") =~ s/^/\# /;
      print $trace_m4 "$comment\n";
      print $trace_m4 "at_define([AT_$_],\n";
      print $trace_m4 trace_format_to_m4 ($trace{$_}) . ")\n\n";
    }
  print $trace_m4 "\n";

# Reenable output.
  print $trace_m4 "at_divert(0)at_dnl\n";

# Transform the traces from m4 into an m4 input file.
  # Typically, transform:
  #
  # | m4trace:configure.ac:3: -1- AC_SUBST([exec_prefix], [NONE])
  #
  # into
  #
  # | AT_AC_SUBST([configure.ac], [3], [1], [AC_SUBST], [exec_prefix], [NONE])
  #
  # Pay attention that the file name might include colons, if under DOS
  # for instance, so we don't use `[^:]+'.
  my $traces = new Autom4te::XFile ("< " . open_quote ($tcache . $req->id));
  while ($_ = $traces->getline)
    {
      # Trace with arguments, as the example above.  We don't try
      # to match the trailing parenthesis as it might be on a
      # separate line.
      s{^m4trace:(.+):(\d+): -(\d+)- ([^(]+)\((.*)$}
       {AT_$4([$1], [$2], [$3], [$4], $5};
      # Traces without arguments, always on a single line.
      s{^m4trace:(.+):(\d+): -(\d+)- ([^)]*)\n$}
       {AT_$4([$1], [$2], [$3], [$4])\n};
      print $trace_m4 "$_";
    }
  $trace_m4->close;

my $in = new Autom4te::XFile ("$m4 " . shell_quote ("$tmp/traces.m4") . " |");
  my $out = new Autom4te::XFile ("> " . open_quote ($output));

# This is dubious: should we really transform the quadrigraphs in
  # traces?  It might break balanced [ ] etc. in the output.  The
  # consensus seems to be that traces are more useful this way.
  while ($_ = $in->getline)
    {
      # It makes no sense to try to transform __oline__.
      s/\@<:\@/[/g;
      s/\@:>\@/]/g;
      s/\@\{:\@/(/g;
      s/\@:\}\@/)/g;
      s/\@S\|\@/\$/g;
      s/\@%:\@/#/g;
      s/\@&t\@//g;
      print $out $_;
    }
}

# $BOOL
# up_to_date ($REQ)
# -----------------
# Are the cache files of $REQ up to date?
# $REQ is `valid' if it corresponds to the request and exists, which
# does not mean it is up to date.  It is up to date if, in addition,
# its files are younger than its dependencies.
sub up_to_date ($)
{
  my ($req) = @_;

return 0
    if ! $req->valid;

my $tfile = $tcache . $req->id;
  my $ofile = $ocache . $req->id;

# We can't answer properly if the traces are not computed since we
  # need to know what other files were included.  Actually, if any of
  # the cache files is missing, we are not up to date.
  return 0
    if ! -f $tfile || ! -f $ofile;

# The youngest of the cache files must be older than the oldest of
  # the dependencies.
  my $tmtime = mtime ($tfile);
  my $omtime = mtime ($ofile);
  my ($file, $mtime) = ($tmtime < $omtime
			? ($ofile, $omtime) : ($tfile, $tmtime));

# We depend at least upon the arguments.
  my @dep = @ARGV;

# stdin is always out of date.
  if (grep { $_ eq '-' } @dep)
    { return 0 }

# Files may include others.  We can use traces since we just checked
  # if they are available.
  handle_traces ($req, "$tmp/dependencies",
		 ('include'    => '$1',
		  'm4_include' => '$1'));
  my $deps = new Autom4te::XFile ("< " . open_quote ("$tmp/dependencies"));
  while ($_ = $deps->getline)
    {
      chomp;
      my $file = find_file ("$_?", @include);
      # If a file which used to be included is no longer there, then
      # don't say it's missing (it might no longer be included).  But
      # of course, that causes the output to be outdated (as if the
      # time stamp of that missing file was newer).
      return 0
	if ! $file;
      push @dep, $file;
    }

# If $FILE is younger than one of its dependencies, it is outdated.
  return up_to_date_p ($file, @dep);
}

## ---------- ##
## Freezing.  ##
## ---------- ##

# freeze ($OUTPUT)
# ----------------
sub freeze ($)
{
  my ($output) = @_;

# When processing the file with diversion disabled, there must be no
  # output but comments and empty lines.
  my $result = xqx ("$m4"
		    . ' --fatal-warning'
		    . join (' --include=', '', map { shell_quote ($_) } @include)
		    . ' --define=divert'
		    . " " . files_to_options (@ARGV)
		    . ' </dev/null');
  $result =~ s/#.*\n//g;
  $result =~ s/^\n//mg;

fatal "freezing produced output:\n$result"
    if $result;

# If freezing produces output, something went wrong: a bad `divert',
  # or an improper paren etc.
  xsystem ("$m4"
	   . ' --fatal-warning'
	   . join (' --include=', '', map { shell_quote ($_) } @include)
	   . " --freeze-state=" . shell_quote ($output)
	   . " " . files_to_options (@ARGV)
	   . ' </dev/null');
}

## -------------- ##
## Main program.  ##
## -------------- ##

mktmpdir ('am4t');
load_configuration ($ENV{'AUTOM4TE_CFG'} || "$pkgdatadir/autom4te.cfg");
load_configuration ("$ENV{'HOME'}/.autom4te.cfg")
  if exists $ENV{'HOME'} && -f "$ENV{'HOME'}/.autom4te.cfg";
load_configuration (".autom4te.cfg")
  if -f ".autom4te.cfg";
parse_args;

# Freezing does not involve the cache.
if ($freeze)
  {
    freeze ($output);
    exit $exit_code;
  }

# We need our cache directory.  Don't fail with parallel creation.
if (! -d "$cache")
  {
    mkdir "$cache", 0755
      or -d "$cache"
      or fatal "cannot create $cache: $!";
  }

# Open the index for update, and lock it.  autom4te handles several
# files, but the index is the first and last file to be updated, so
# locking it is sufficient.
$icache_file = new Autom4te::XFile $icache, O_RDWR|O_CREAT;
$icache_file->lock (LOCK_EX)
  if ($flock_implemented eq "yes");

# Read the cache index if available and older than autom4te itself.
# If autom4te is younger, then some structures such as C4che might
# have changed, which would corrupt its processing.
Autom4te::C4che->load ($icache_file)
  if -f $icache && mtime ($icache) > mtime ($0);

# Add the new trace requests.
my $req = Autom4te::C4che->request ('input' => \@ARGV,
				    'path'  => \@include,
				    'macro' => [keys %trace, @preselect]);

# If $REQ's cache files are not up to date, or simply if the user
# discarded them (-f), declare it invalid.
$req->valid (0)
  if $force || ! up_to_date ($req);

# We now know whether we can trust the Request object.  Say it.
verb "the trace request object is:\n" . $req->marshall;

# We need to run M4 if (i) the user wants it (--force), (ii) $REQ is
# invalid.
handle_m4 ($req, keys %{$req->macro})
  if $force || ! $req->valid;

# Issue the warnings each time autom4te was run.
my $separator = "\n" . ('-' x 25) . " END OF WARNING " . ('-' x 25) . "\n\n";
handle_traces ($req, "$tmp/warnings",
	       ('_m4_warn' => "\$1::\$f:\$l::\$2::\$3$separator"));
# Swallow excessive newlines.
for (split (/\n*$separator\n*/o, contents ("$tmp/warnings")))
{
  # The message looks like:
  # | syntax::input.as:5::ouch
  # | ::input.as:4: baz is expanded from...
  # | input.as:2: bar is expanded from...
  # | input.as:3: foo is expanded from...
  # | input.as:5: the top level
  # In particular, m4_warn guarantees that either $stackdump is empty, or
  # it consists of lines where only the last line ends in "top level".
  my ($cat, $loc, $msg, $stacktrace) = split ('::', $_, 4);
  msg $cat, $loc, "warning: $msg",
    partial => ($stacktrace =~ /top level$/) + 0;
  for (split /\n/, $stacktrace)
    {
      my ($loc, $trace) = split (': ', $_, 2);
      msg $cat, $loc, $trace, partial => ($trace !~ /top level$/) + 0;
    }
}

# Now output...
if (%trace)
  {
    # Always produce traces, since even if the output is young enough,
    # there is no guarantee that the traces use the same *format*
    # (e.g., `-t FOO:foo' and `-t FOO:bar' are both using the same M4
    # traces, hence the M4 traces cache is usable, but its formatting
    # will yield different results).
    handle_traces ($req, $output, %trace);
  }
else
  {
    # Actual M4 expansion, if the user wants it, or if $output is old
    # (STDOUT is pretty old).
    handle_output ($req, $output)
      if $force || mtime ($output) < mtime ($ocache . $req->id);
  }

# If we ran up to here, the cache is valid.
$req->valid (1);
Autom4te::C4che->save ($icache_file);

exit $exit_code;

### Setup "GNU" style for perl-mode and cperl-mode.
## Local Variables:
## perl-indent-level: 2
## perl-continued-statement-offset: 2
## perl-continued-brace-offset: 0
## perl-brace-offset: 0
## perl-brace-imaginary-offset: 0
## perl-label-offset: -2
## cperl-indent-level: 2
## cperl-brace-offset: 0
## cperl-continued-brace-offset: 0
## cperl-label-offset: -2
## cperl-extra-newline-before-brace: t
## cperl-merge-trailing-else: nil
## cperl-continued-statement-offset: 2
## End:

cmd: