File Manager

X7ROOT File Manager

Current Path: /usr/bin

📁 ..
📄 2to3(95 B)
📄 GET(14.71 KB)
📄 HEAD(14.71 KB)
📄 Magick-config(1.23 KB)
📄 MagickCore-config(1.24 KB)
📄 MagickWand-config(1.25 KB)
📄 Mail(383.67 KB)
📄 POST(14.71 KB)
📄 Wand-config(1.23 KB)
📄 [(40.52 KB)
📄 a2p(105.32 KB)
📄 ab(157.91 KB)
📄 aclocal(35.87 KB)
📄 aclocal-1.13(35.87 KB)
📄 addr2line(28.42 KB)
📄 alias(29 B)
📄 animate(7.05 KB)
📄 annotate(11.13 KB)
📄 apropos(45.49 KB)
📄 ar(61.21 KB)
📄 arch(32.3 KB)
📄 arpaname(7.03 KB)
📄 as(377.28 KB)
📄 aspell(163.35 KB)
📄 at(51.73 KB)
📄 atq(51.73 KB)
📄 atrm(51.73 KB)
📄 audit2allow(14.21 KB)
📄 audit2why(14.21 KB)
📄 aulast(15.48 KB)
📄 aulastlog(11.35 KB)
📄 ausyscall(11.18 KB)
📄 autoconf(14.42 KB)
📄 autoheader(8.33 KB)
📄 autom4te(31.43 KB)
📄 automake(246.44 KB)
📄 automake-1.13(246.44 KB)
📄 autopoint(25.95 KB)
📄 autoreconf(20.57 KB)
📄 autoscan(16.72 KB)
📄 autoupdate(33.08 KB)
📄 auvirt(31.93 KB)
📄 awk(418.55 KB)
📄 base64(36.48 KB)
📄 basename(28.35 KB)
📄 bash(941.93 KB)
📄 bashbug(6.8 KB)
📄 bashbug-64(6.8 KB)
📄 batch(137 B)
📄 bc(81.47 KB)
📄 bdftogd(3.91 KB)
📄 bdftopcf(44.19 KB)
📄 bdftruncate(11.2 KB)
📄 berkeley_db47_svc(58.46 KB)
📄 bg(26 B)
📄 bind9-config(3.47 KB)
📄 bison(393.34 KB)
📄 bond2team(22.74 KB)
📄 bootctl(68.99 KB)
📄 bunzip2(31.89 KB)
📄 busctl(403.15 KB)
📄 bzcat(31.89 KB)
📄 bzcmp(2.08 KB)
📄 bzdiff(2.08 KB)
📄 bzgrep(1.64 KB)
📄 bzip2(31.89 KB)
📄 bzip2recover(15.24 KB)
📄 bzless(1.23 KB)
📄 bzmore(1.23 KB)
📄 c++(754.59 KB)
📄 c++filt(27.92 KB)
📄 c2ph(35.75 KB)
📄 c89(224 B)
📄 c99(215 B)
📄 ca-legacy(1.6 KB)
📄 cairo-sphinx(69.99 KB)
📄 cal(36.8 KB)
📄 captoinfo(64.26 KB)
📄 cat(52.81 KB)
📄 catchsegv(3.26 KB)
📄 catman(36.75 KB)
📄 cc(750.58 KB)
📄 cd(26 B)
📄 centrino-decode(6.13 KB)
📄 certutil(179.75 KB)
📄 chacl(15.27 KB)
📄 chage(72.16 KB)
📄 chardetect(307 B)
📄 chattr(11.27 KB)
📄 chcat(13.12 KB)
📄 chcon(61.46 KB)
📄 checkmodule(400.48 KB)
📄 checkpolicy(412.46 KB)
📄 chfn(23.41 KB)
📄 chgrp(61.32 KB)
📄 chmem(40.43 KB)
📄 chmod(57.21 KB)
📄 chown(61.36 KB)
📄 chronyc(85.03 KB)
📄 chrt(32.17 KB)
📄 chsh(23.32 KB)
📄 chvt(11.14 KB)
📄 cifsiostat(48.52 KB)
📄 cksum(32.38 KB)
📄 clear(7.02 KB)
📄 cloud-id(310 B)
📄 cloud-init(314 B)
📄 cloud-init-per(2.06 KB)
📄 cmp(44.14 KB)
📄 cmsutil(110.59 KB)
📄 col(23.88 KB)
📄 colcrt(11.29 KB)
📄 colrm(23.77 KB)
📄 column(27.99 KB)
📄 comm(36.55 KB)
📄 command(31 B)
📄 compare(11.09 KB)
📄 compile_et(1.45 KB)
📄 composite(7.05 KB)
📄 config_data(7.05 KB)
📄 conjure(7.05 KB)
📄 convert(7.05 KB)
📄 coredumpctl(154.52 KB)
📄 corelist(10.02 KB)
📄 cp(151.55 KB)
📄 cpan(4.97 KB)
📄 cpan-mirrors(4.27 KB)
📄 cpan2dist(21.31 KB)
📄 cpanp(3.31 KB)
📄 cpanp-run-perl(553 B)
📄 cpapi1(3.02 MB)
📄 cpapi2(3.02 MB)
📄 cpapi3(3.02 MB)
📄 cpio(142.58 KB)
📄 cpp(754.58 KB)
📄 cpupower(66.34 KB)
📄 crlutil(127 KB)
📄 crontab(56.23 KB)
📄 csplit(48.82 KB)
📄 csslint-0.6(19.55 KB)
📄 curl(153 KB)
📄 cut(40.61 KB)
📄 cvtsudoers(241.7 KB)
📄 cxpm(28.05 KB)
📄 date(60.74 KB)
📄 db47_archive(10.21 KB)
📄 db47_checkpoint(10.27 KB)
📄 db47_codegen(22.25 KB)
📄 db47_deadlock(10.28 KB)
📄 db47_dump(14.25 KB)
📄 db47_hotbackup(18.38 KB)
📄 db47_load(26.33 KB)
📄 db47_printlog(62.8 KB)
📄 db47_recover(10.27 KB)
📄 db47_stat(14.22 KB)
📄 db47_upgrade(10.23 KB)
📄 db47_verify(10.22 KB)
📄 db_archive(11.23 KB)
📄 db_checkpoint(11.3 KB)
📄 db_deadlock(11.31 KB)
📄 db_dump(15.33 KB)
📄 db_dump185(64.45 KB)
📄 db_hotbackup(15.34 KB)
📄 db_load(27.51 KB)
📄 db_log_verify(15.34 KB)
📄 db_printlog(32.26 KB)
📄 db_recover(11.33 KB)
📄 db_replicate(15.34 KB)
📄 db_stat(15.26 KB)
📄 db_tuner(19.33 KB)
📄 db_upgrade(11.23 KB)
📄 db_verify(11.25 KB)
📄 dbilogstrip(1.43 KB)
📄 dbiprof(6.15 KB)
📄 dbiproxy(5.35 KB)
📄 dbus-binding-tool(94.49 KB)
📄 dbus-cleanup-sockets(11 KB)
📄 dbus-daemon(218 KB)
📄 dbus-monitor(23.13 KB)
📄 dbus-run-session(14.97 KB)
📄 dbus-send(27.07 KB)
📄 dbus-test-tool(23.13 KB)
📄 dbus-update-activation-environment(15.02 KB)
📄 dbus-uuidgen(10.98 KB)
📄 dc(44.33 KB)
📄 dd(73.14 KB)
📄 deallocvt(11.16 KB)
📄 debuginfo-install(7.88 KB)
📄 delv(39.98 KB)
📄 df(102.55 KB)
📄 dgawk(502.12 KB)
📄 diff(195.46 KB)
📄 diff3(60.65 KB)
📄 dig(146.96 KB)
📄 dir(114.85 KB)
📄 dircolors(40.44 KB)
📄 dirname(28.31 KB)
📄 display(7.05 KB)
📄 dmesg(48.52 KB)
📄 dnsdomainname(15.41 KB)
📄 domainname(15.41 KB)
📄 doveadm(2.94 MB)
📄 doveconf(541.95 KB)
📄 dovecot-sysreport(5.81 KB)
📄 dracut(55.83 KB)
📄 dsync(2.94 MB)
📄 dtrace(16.66 KB)
📄 du(110.34 KB)
📄 dumpkeys(77.51 KB)
📄 dumpsexp(15.19 KB)
📄 dvipdf(1 KB)
📄 dwp(3.03 MB)
📄 ea-php71(4.02 MB)
📄 ea-php73(4.65 MB)
📄 ea-php73-pear(383 B)
📄 ea-php73-pecl(299 B)
📄 ea-php74(6.09 MB)
📄 ea-php74-pear(383 B)
📄 ea-php74-pecl(299 B)
📄 ea-php80(6.67 MB)
📄 ea-php80-pear(383 B)
📄 ea-php80-pecl(299 B)
📄 easy_install(320 B)
📄 easy_install-2.7(328 B)
📄 echo(32.31 KB)
📄 egrep(290 B)
📄 eject(48.81 KB)
📄 elfedit(32.18 KB)
📄 elinks(1.3 MB)
📄 env(28.33 KB)
📄 envsubst(36.01 KB)
📄 eps2eps(639 B)
📄 eqn(144.41 KB)
📄 ex(906.4 KB)
📄 expand(32.48 KB)
📄 expr(36.53 KB)
📄 factor(93.29 KB)
📄 fallocate(27.84 KB)
📄 false(28.25 KB)
📄 fc(26 B)
📄 fc-cache(132 B)
📄 fc-cache-64(15.45 KB)
📄 fc-cat(15.4 KB)
📄 fc-conflist(11.2 KB)
📄 fc-list(11.26 KB)
📄 fc-match(11.32 KB)
📄 fc-pattern(11.26 KB)
📄 fc-query(11.23 KB)
📄 fc-scan(11.27 KB)
📄 fc-validate(11.27 KB)
📄 fg(26 B)
📄 fgconsole(11.16 KB)
📄 fgrep(290 B)
📄 file(19.3 KB)
📄 find(194.63 KB)
📄 find-repos-of-install(4.27 KB)
📄 find2perl(23.06 KB)
📄 findmnt(58.38 KB)
📄 fipscheck(15.37 KB)
📄 fipshmac(11.3 KB)
📄 flex(318.07 KB)
📄 flex++(318.07 KB)
📄 flock(23.88 KB)
📄 fmt(36.48 KB)
📄 fold(36.46 KB)
📄 fonttosfnt(35.99 KB)
📄 free(19.33 KB)
📄 freetype-config(4.39 KB)
📄 fribidi(16.09 KB)
📄 ftp(85.5 KB)
📄 funzip(31.38 KB)
📄 g++(754.59 KB)
📄 gapplication(19.48 KB)
📄 gawk(418.55 KB)
📄 gcc(750.58 KB)
📄 gcc-ar(26.45 KB)
📄 gcc-nm(26.45 KB)
📄 gcc-ranlib(26.45 KB)
📄 gcov(311.45 KB)
📄 gd2copypal(7.06 KB)
📄 gd2togif(7.05 KB)
📄 gd2topng(11.06 KB)
📄 gdbus(40.17 KB)
📄 gdcmpgif(11.08 KB)
📄 gdk-pixbuf-query-loaders-64(15.38 KB)
📄 gdk-pixbuf-thumbnailer(15.59 KB)
📄 gdlib-config(2.52 KB)
📄 gdparttopng(11.07 KB)
📄 gdtopng(7.04 KB)
📄 gencat(22.11 KB)
📄 genl-ctrl-list(11.27 KB)
📄 geoiplookup(15.28 KB)
📄 geoiplookup6(11.16 KB)
📄 geoipupdate(31.28 KB)
📄 geqn(144.41 KB)
📄 getconf(22.02 KB)
📄 getent(26.39 KB)
📄 getfacl(24.29 KB)
📄 getkeycodes(11.16 KB)
📄 getopt(15.38 KB)
📄 getopts(31 B)
📄 gettext(35.94 KB)
📄 gettext.sh(4.52 KB)
📄 gettextize(42.69 KB)
📄 ghostscript(10.97 KB)
📄 giftogd2(7.05 KB)
📄 gio(73.41 KB)
📄 gio-querymodules-64(11.31 KB)
📄 git(1.46 MB)
📄 git-receive-pack(1.46 MB)
📄 git-shell(722.04 KB)
📄 git-upload-archive(1.46 MB)
📄 git-upload-pack(795.48 KB)
📄 glib-compile-schemas(44.38 KB)
📄 gmake(178.47 KB)
📄 gneqn(271 B)
📄 gnroff(3.31 KB)
📄 gpasswd(76.57 KB)
📄 gpg(732.4 KB)
📄 gpg-agent(289.74 KB)
📄 gpg-connect-agent(152.69 KB)
📄 gpg-error(23.18 KB)
📄 gpg-error-config(1.83 KB)
📄 gpg-zip(3.23 KB)
📄 gpg2(732.4 KB)
📄 gpgconf(140.31 KB)
📄 gpgparsemail(23.7 KB)
📄 gpgsplit(48.88 KB)
📄 gpgv(345.38 KB)
📄 gpgv2(345.38 KB)
📄 gpic(180.41 KB)
📄 gprof(98.41 KB)
📄 gr2fonttest(23.66 KB)
📄 grep(155.3 KB)
📄 groff(81.63 KB)
📄 grops(140.85 KB)
📄 grotty(98.59 KB)
📄 groups(32.41 KB)
📄 growpart(21.13 KB)
📄 grub2-editenv(396.09 KB)
📄 grub2-file(834.37 KB)
📄 grub2-fstest(1.03 MB)
📄 grub2-glue-efi(258.8 KB)
📄 grub2-kbdcomp(1.63 KB)
📄 grub2-menulst2cfg(241.83 KB)
📄 grub2-mkfont(287.6 KB)
📄 grub2-mkimage(379.24 KB)
📄 grub2-mklayout(264.87 KB)
📄 grub2-mknetdir(429.77 KB)
📄 grub2-mkpasswd-pbkdf2(271.3 KB)
📄 grub2-mkrelpath(258.48 KB)
📄 grub2-mkrescue(1021.77 KB)
📄 grub2-mkstandalone(534.3 KB)
📄 grub2-render-label(839.16 KB)
📄 grub2-script-check(295.41 KB)
📄 grub2-syslinux2cfg(767.72 KB)
📄 gs(10.97 KB)
📄 gsbj(350 B)
📄 gsdj(352 B)
📄 gsdj500(352 B)
📄 gsettings(23.8 KB)
📄 gslj(353 B)
📄 gslp(350 B)
📄 gsnd(277 B)
📄 gsoelim(32.59 KB)
📄 gss-client(23.17 KB)
📄 gtar(338.02 KB)
📄 gtbl(115.96 KB)
📄 gtroff(512.96 KB)
📄 gunzip(2.2 KB)
📄 gzexe(5.79 KB)
📄 gzip(98.43 KB)
📄 h2ph(27.65 KB)
📄 h2xs(59.15 KB)
📄 head(40.51 KB)
📄 hexdump(32.02 KB)
📄 hmac256(15.67 KB)
📄 host(127.02 KB)
📄 hostid(28.32 KB)
📄 hostname(15.41 KB)
📄 hostnamectl(318.07 KB)
📄 htdbm(56.14 KB)
📄 htdigest(29.35 KB)
📄 htpasswd(54.2 KB)
📄 httxt2dbm(21.69 KB)
📄 hunspell(53.11 KB)
📄 i386(15.27 KB)
📄 iceauth(31.73 KB)
📄 iconv(58.14 KB)
📄 id(36.52 KB)
📄 identify(7.06 KB)
📄 idiag-socket-details(11.34 KB)
📄 idle(93 B)
📄 idn(32.45 KB)
📄 ifnames(4.03 KB)
📄 igawk(3.11 KB)
📄 import(7.05 KB)
📄 info(265.19 KB)
📄 infocmp(56.07 KB)
📄 infokey(21.47 KB)
📄 infotocap(64.26 KB)
📄 innochecksum(9.68 MB)
📄 install(139.59 KB)
📄 instmodsh(4.15 KB)
📄 ionice(23.86 KB)
📄 iostat(60.79 KB)
📄 ipcalc(15.05 KB)
📄 ipcmk(24 KB)
📄 ipcrm(27.85 KB)
📄 ipcs(48.37 KB)
📄 iptables-xml(91.52 KB)
📄 isc-config.sh(3.47 KB)
📄 isosize(23.83 KB)
📄 ispell(988 B)
📄 jobs(28 B)
📄 join(48.75 KB)
📄 journalctl(537.88 KB)
📄 js(3.36 MB)
📄 json_pp(3.82 KB)
📄 json_reformat(35.89 KB)
📄 json_verify(27.52 KB)
📄 jsonpointer(1.31 KB)
📄 kbd_mode(11.16 KB)
📄 kbdinfo(11.19 KB)
📄 kbdrate(11.22 KB)
📄 kdumpctl(33.18 KB)
📄 kernel-install(4.7 KB)
📄 keyctl(27.94 KB)
📄 kill(32.82 KB)
📄 killall(24.14 KB)
📄 kmod(143.24 KB)
📄 krb5-config(6.96 KB)
📄 last(19.11 KB)
📄 lastb(19.11 KB)
📄 lastlog(19.15 KB)
📄 lchfn(15.52 KB)
📄 lchsh(15.49 KB)
📄 ld(982.59 KB)
📄 ld.bfd(982.59 KB)
📄 ld.gold(5.11 MB)
📄 ldd(5.18 KB)
📄 less(154.57 KB)
📄 lessecho(11.13 KB)
📄 lesskey(16.67 KB)
📄 lesspipe.sh(2.24 KB)
📄 lex(318.07 KB)
📄 lexgrog(85.09 KB)
📄 libgcrypt-config(3.78 KB)
📄 libnetcfg(15.36 KB)
📄 libpng-config(2.38 KB)
📄 libpng15-config(2.38 KB)
📄 libtool(314.04 KB)
📄 libtoolize(76.8 KB)
📄 libwmf-fontmap(12.78 KB)
📄 link(28.3 KB)
📄 links(1.3 MB)
📄 linux-boot-prober(5.85 KB)
📄 linux32(15.27 KB)
📄 linux64(15.27 KB)
📄 ln(57.22 KB)
📄 loadkeys(110.48 KB)
📄 loadunimap(23.88 KB)
📄 locale(37.11 KB)
📄 localectl(326.23 KB)
📄 localedef(318.31 KB)
📄 logger(28.62 KB)
📄 login(36.38 KB)
📄 loginctl(489.6 KB)
📄 logname(28.31 KB)
📄 logresolve(28.58 KB)
📄 look(11.27 KB)
📄 lprsetup.sh(5.34 KB)
📄 ls(114.85 KB)
📄 lsattr(11.25 KB)
📄 lsblk(79.17 KB)
📄 lscpu(60.75 KB)
📄 lsinitrd(6.26 KB)
📄 lsipc(60.95 KB)
📄 lslocks(41.01 KB)
📄 lslogins(52.88 KB)
📄 lsmem(40.78 KB)
📄 lsns(36.43 KB)
📄 lsphp(937 B)
📄 lua(15.47 KB)
📄 luac(119.03 KB)
📄 lwp-download(8.43 KB)
📄 lwp-dump(2.73 KB)
📄 lwp-mirror(2.42 KB)
📄 lwp-request(14.71 KB)
📄 lz4(105.87 KB)
📄 lz4_decompress(627 KB)
📄 lz4c(105.87 KB)
📄 lz4cat(105.87 KB)
📄 m4(151.17 KB)
📄 machinectl(533.93 KB)
📄 mail(383.67 KB)
📄 mailx(383.67 KB)
📄 make(178.47 KB)
📄 makedb(18.11 KB)
📄 man(100.44 KB)
📄 mandb(122.25 KB)
📄 manpath(32.55 KB)
📄 mapscrn(19.78 KB)
📄 mcookie(15.44 KB)
📄 md5sum(40.53 KB)
📄 mdig(44.2 KB)
📄 mesg(10.98 KB)
📄 miniterm.py(25.48 KB)
📄 mkdir(77.9 KB)
📄 mkfifo(61.59 KB)
📄 mkfontdir(65 B)
📄 mkfontscale(32.48 KB)
📄 mkinitrd(2.94 KB)
📄 mknod(65.61 KB)
📄 mktemp(40.66 KB)
📄 modutil(165.78 KB)
📄 mogrify(7.05 KB)
📄 montage(7.05 KB)
📄 more(40.15 KB)
📄 mount(43.23 KB)
📄 mountpoint(15.32 KB)
📄 mpstat(56.54 KB)
📄 msgattrib(23.36 KB)
📄 msgcat(23.34 KB)
📄 msgcmp(23.59 KB)
📄 msgcomm(19.31 KB)
📄 msgconv(19.3 KB)
📄 msgen(19.3 KB)
📄 msgexec(15.33 KB)
📄 msgfilter(27.56 KB)
📄 msgfmt(77.05 KB)
📄 msgfmt.py(6.33 KB)
📄 msggrep(35.97 KB)
📄 msghack(12.45 KB)
📄 msginit(44.38 KB)
📄 msgmerge(52.6 KB)
📄 msgunfmt(31.7 KB)
📄 msguniq(19.31 KB)
📄 mv(127.3 KB)
📄 my_print_defaults(8.81 MB)
📄 myisam_ftdump(11.08 MB)
📄 myisamchk(11.55 MB)
📄 myisamlog(7.42 MB)
📄 myisampack(11.21 MB)
📄 mysql(12.1 MB)
📄 mysql_config(840 B)
📄 mysql_config-64(5.11 KB)
📄 mysql_config_editor(8.98 MB)
📄 mysql_install_db(11.44 MB)
📄 mysql_plugin(8.88 MB)
📄 mysql_secure_installation(10.71 MB)
📄 mysql_ssl_rsa_setup(9.23 MB)
📄 mysql_tzinfo_to_sql(4.99 MB)
📄 mysql_upgrade(14.18 MB)
📄 mysqladmin(10.76 MB)
📄 mysqlbinlog(12.69 MB)
📄 mysqlcheck(11.04 MB)
📄 mysqld_pre_systemd(3.74 KB)
📄 mysqldump(11.13 MB)
📄 mysqldumpslow(7.66 KB)
📄 mysqlimport(10.76 MB)
📄 mysqlpump(20.23 MB)
📄 mysqlshow(10.72 MB)
📄 mysqlslap(10.82 MB)
📄 nail(383.67 KB)
📄 named-rrchecker(15.32 KB)
📄 namei(27.95 KB)
📄 nano(201.08 KB)
📄 ncurses5-config(5.68 KB)
📄 ncursesw5-config(5.68 KB)
📄 ndptool(23.63 KB)
📄 needs-restarting(8.17 KB)
📄 neqn(271 B)
📄 netstat(151.38 KB)
📄 newgidmap(38.09 KB)
📄 newgrp(40.95 KB)
📄 newuidmap(38.06 KB)
📄 nf-ct-add(11.8 KB)
📄 nf-ct-list(15.84 KB)
📄 nf-exp-add(16.21 KB)
📄 nf-exp-delete(15.99 KB)
📄 nf-exp-list(11.8 KB)
📄 nf-log(11.23 KB)
📄 nf-monitor(11.18 KB)
📄 nf-queue(11.27 KB)
📄 nfsiostat-sysstat(52.55 KB)
📄 ngettext(35.95 KB)
📄 nice(32.32 KB)
📄 nisdomainname(15.41 KB)
📄 nl(40.6 KB)
📄 nl-addr-add(11.65 KB)
📄 nl-addr-delete(11.73 KB)
📄 nl-addr-list(15.88 KB)
📄 nl-class-add(11.7 KB)
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📄 nl-class-list(11.48 KB)
📄 nl-classid-lookup(11.29 KB)
📄 nl-cls-add(11.76 KB)
📄 nl-cls-delete(11.68 KB)
📄 nl-cls-list(11.58 KB)
📄 nl-fib-lookup(11.41 KB)
📄 nl-link-enslave(7.05 KB)
📄 nl-link-ifindex2name(7.06 KB)
📄 nl-link-list(11.52 KB)
📄 nl-link-name2ifindex(7.05 KB)
📄 nl-link-release(7.05 KB)
📄 nl-link-set(11.64 KB)
📄 nl-link-stats(11.39 KB)
📄 nl-list-caches(11.08 KB)
📄 nl-list-sockets(7.06 KB)
📄 nl-monitor(11.2 KB)
📄 nl-neigh-add(11.51 KB)
📄 nl-neigh-delete(11.57 KB)
📄 nl-neigh-list(11.46 KB)
📄 nl-neightbl-list(11.27 KB)
📄 nl-pktloc-lookup(11.36 KB)
📄 nl-qdisc-add(11.6 KB)
📄 nl-qdisc-delete(11.54 KB)
📄 nl-qdisc-list(11.63 KB)
📄 nl-route-add(11.73 KB)
📄 nl-route-delete(15.86 KB)
📄 nl-route-get(11.18 KB)
📄 nl-route-list(11.77 KB)
📄 nl-rule-list(11.3 KB)
📄 nl-tctree-list(11.53 KB)
📄 nl-util-addr(7.03 KB)
📄 nm(45.43 KB)
📄 nohup(32.42 KB)
📄 nproc(32.37 KB)
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📄 nsenter(28.22 KB)
📄 nslookup(130.93 KB)
📄 nss-policy-check(15.26 KB)
📄 nsupdate(65.2 KB)
📄 numfmt(64.71 KB)
📄 objcopy(227.34 KB)
📄 objdump(357.75 KB)
📄 od(64.81 KB)
📄 oldfind(186.41 KB)
📄 open(19.48 KB)
📄 openssl(542.27 KB)
📄 openvt(19.48 KB)
📄 os-prober(5.51 KB)
📄 p11-kit(32.18 KB)
📄 package-cleanup(17.39 KB)
📄 page_owner_sort(10.2 KB)
📄 pango-list(11.1 KB)
📄 pango-querymodules-64(28.26 KB)
📄 pango-view(49.47 KB)
📄 paperconf(11.23 KB)
📄 passwd(27.2 KB)
📄 paste(32.34 KB)
📄 patch(147 KB)
📄 pathchk(32.31 KB)
📄 pchrt(3.93 KB)
📄 pcre-config(2.09 KB)
📄 pdf2dsc(698 B)
📄 pdf2ps(909 B)
📄 pdns_control(7.58 MB)
📄 pdnsutil(70.52 MB)
📄 peekfd(11.21 KB)
📄 perl(11.14 KB)
📄 perl5.16.3(11.14 KB)
📄 perlbug(43.61 KB)
📄 perldoc(203 B)
📄 perlivp(10.52 KB)
📄 perlml(5.98 KB)
📄 perlthanks(43.61 KB)
📄 perror(8.95 MB)
📄 pf2afm(498 B)
📄 pfbtopfa(516 B)
📄 pflags(2.06 KB)
📄 pftp(85.5 KB)
📄 pgawk(418.59 KB)
📄 pgrep(27.67 KB)
📄 php(937 B)
📄 pic(180.41 KB)
📄 piconv(7.99 KB)
📄 pidstat(68.91 KB)
📄 pinentry(2.54 KB)
📄 pinentry-curses(49.19 KB)
📄 ping(64.63 KB)
📄 ping6(64.63 KB)
📄 pinky(36.57 KB)
📄 pk12util(103.22 KB)
📄 pkaction(15 KB)
📄 pkcheck(23.03 KB)
📄 pkexec(27.02 KB)
📄 pkg-config(44.38 KB)
📄 pkill(27.67 KB)
📄 pkla-admin-identities(19.23 KB)
📄 pkla-check-authorization(27.3 KB)
📄 pkttyagent(18.98 KB)
📄 pl2pm(4.42 KB)
📄 pldd(14.11 KB)
📄 pmap(27.61 KB)
📄 pngtogd(7.05 KB)
📄 pngtogd2(7.05 KB)
📄 pod2html(4 KB)
📄 pod2latex(10.1 KB)
📄 pod2man(13.26 KB)
📄 pod2text(10.75 KB)
📄 pod2usage(3.67 KB)
📄 podchecker(3.7 KB)
📄 podselect(2.55 KB)
📄 post-grohtml(187.55 KB)
📄 powernow-k8-decode(6.15 KB)
📄 pphs(404 B)
📄 pr(65.11 KB)
📄 pre-grohtml(86.24 KB)
📄 precat(5.52 KB)
📄 preconv(40.88 KB)
📄 preunzip(5.52 KB)
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📄 prezip-bin(11.05 KB)
📄 printafm(395 B)
📄 printenv(28.28 KB)
📄 printf(48.61 KB)
📄 prlimit(41.2 KB)
📄 prove(13.13 KB)
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📄 ps(97.77 KB)
📄 ps2ascii(631 B)
📄 ps2epsi(2.69 KB)
📄 ps2pdf(272 B)
📄 ps2pdf12(215 B)
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📄 ps2ps(647 B)
📄 ps2ps2(669 B)
📄 psed(52.08 KB)
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📄 psfstriptable(19.48 KB)
📄 psfxtable(19.48 KB)
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📄 pstree.x11(27.84 KB)
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📄 pwscore(11.13 KB)
📄 pydoc(78 B)
📄 pygettext.py(21.57 KB)
📄 pynche(137 B)
📄 python(6.98 KB)
📄 python-config(1.79 KB)
📄 python2(6.98 KB)
📄 python2-config(1.79 KB)
📄 python2.7(6.98 KB)
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📄 qemu-ga(267.8 KB)
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📄 rdate(10.3 KB)
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📄 readelf(509.84 KB)
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📄 recode-sr-latin(15.29 KB)
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📄 replace(5.16 MB)
📄 repo-graph(4.09 KB)
📄 repo-rss(10.07 KB)
📄 repoclosure(11.42 KB)
📄 repodiff(13.97 KB)
📄 repomanage(6.88 KB)
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📄 repotrack(9.86 KB)
📄 rescan-scsi-bus.sh(33.81 KB)
📄 reset(19.59 KB)
📄 resizecons(19.63 KB)
📄 resolve_stack_dump(8.88 MB)
📄 resolveip(8.81 MB)
📄 rev(11.26 KB)
📄 rm(61.4 KB)
📄 rmdir(44.46 KB)
📄 rnano(201.08 KB)
📄 rpcgen(90.45 KB)
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📄 rpm2cpio(11.16 KB)
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📄 rpmkeys(11.73 KB)
📄 rpmquery(15.75 KB)
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📄 rsync(488.38 KB)
📄 rsyslog-recover-qi.pl(5.96 KB)
📄 run-parts(2.04 KB)
📄 run-with-aspell(85 B)
📄 runcon(32.47 KB)
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📄 rview(906.4 KB)
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📄 sandbox(17.52 KB)
📄 sar(95.4 KB)
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📄 scl_enabled(258 B)
📄 scl_source(1.83 KB)
📄 scp(89.23 KB)
📄 screen(464.1 KB)
📄 script(19.61 KB)
📄 scriptreplay(15.29 KB)
📄 scsi-rescan(33.81 KB)
📄 scsi_logging_level(7.72 KB)
📄 scsi_mandat(3.55 KB)
📄 scsi_readcap(1.3 KB)
📄 scsi_ready(1.09 KB)
📄 scsi_satl(3.76 KB)
📄 scsi_start(1.25 KB)
📄 scsi_stop(1.44 KB)
📄 scsi_temperature(936 B)
📄 sdiff(48.41 KB)
📄 secon(24.06 KB)
📄 sed(74.29 KB)
📄 sedismod(249.42 KB)
📄 sedispol(176.32 KB)
📄 semodule_package(15.3 KB)
📄 seq(48.48 KB)
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📄 setkeycodes(11.16 KB)
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📄 setmetamode(11.21 KB)
📄 setpriv(36.06 KB)
📄 setsid(11.23 KB)
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📄 setup-nsssysinit(1.5 KB)
📄 setup-nsssysinit.sh(1.5 KB)
📄 setvtrgb(11.34 KB)
📄 sftp(142.01 KB)
📄 sg(40.95 KB)
📄 sg_compare_and_write(15.82 KB)
📄 sg_copy_results(20.02 KB)
📄 sg_dd(43.63 KB)
📄 sg_decode_sense(15.49 KB)
📄 sg_emc_trespass(11.09 KB)
📄 sg_format(24.05 KB)
📄 sg_get_config(28.22 KB)
📄 sg_get_lba_status(15.5 KB)
📄 sg_ident(15.46 KB)
📄 sg_inq(83.68 KB)
📄 sg_logs(92.48 KB)
📄 sg_luns(19.65 KB)
📄 sg_map(15.23 KB)
📄 sg_map26(23.77 KB)
📄 sg_modes(29.3 KB)
📄 sg_opcodes(23.88 KB)
📄 sg_persist(28.34 KB)
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📄 sg_rbuf(19.66 KB)
📄 sg_rdac(15.13 KB)
📄 sg_read(23.33 KB)
📄 sg_read_block_limits(11.31 KB)
📄 sg_read_buffer(15.53 KB)
📄 sg_read_long(15.55 KB)
📄 sg_readcap(19.66 KB)
📄 sg_reassign(15.54 KB)
📄 sg_referrals(15.48 KB)
📄 sg_requests(15.58 KB)
📄 sg_reset(11.46 KB)
📄 sg_rmsn(11.32 KB)
📄 sg_rtpg(15.39 KB)
📄 sg_safte(19.59 KB)
📄 sg_sanitize(19.88 KB)
📄 sg_sat_identify(15.55 KB)
📄 sg_sat_phy_event(15.87 KB)
📄 sg_sat_set_features(15.41 KB)
📄 sg_scan(15.34 KB)
📄 sg_senddiag(20.02 KB)
📄 sg_ses(67.55 KB)
📄 sg_start(19.7 KB)
📄 sg_stpg(19.61 KB)
📄 sg_sync(15.52 KB)
📄 sg_test_rwbuf(15.6 KB)
📄 sg_turs(15.48 KB)
📄 sg_unmap(15.5 KB)
📄 sg_verify(15.7 KB)
📄 sg_vpd(77.67 KB)
📄 sg_wr_mode(19.55 KB)
📄 sg_write_buffer(15.66 KB)
📄 sg_write_long(15.55 KB)
📄 sg_write_same(19.9 KB)
📄 sg_xcopy(35.61 KB)
📄 sginfo(65.8 KB)
📄 sgm_dd(31.52 KB)
📄 sgp_dd(35.83 KB)
📄 sh(941.93 KB)
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📄 show-changed-rco(10.13 KB)
📄 show-installed(16.18 KB)
📄 showconsolefont(15.47 KB)
📄 showkey(15.23 KB)
📄 showrgb(7.08 KB)
📄 shred(52.94 KB)
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📄 signver(102.6 KB)
📄 sim_client(14.97 KB)
📄 size(32.35 KB)
📄 skill(23.62 KB)
📄 slabinfo(34.96 KB)
📄 slabtop(19.52 KB)
📄 sleep(32.35 KB)
📄 slogin(760.44 KB)
📄 smtpd.py(18.1 KB)
📄 snice(23.62 KB)
📄 soelim(32.59 KB)
📄 sort(114.94 KB)
📄 sotruss(4.24 KB)
📄 spell(122 B)
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📄 split(69.47 KB)
📄 sprof(22.1 KB)
📄 sqlite3(54.95 KB)
📄 ssh(760.44 KB)
📄 ssh-add(348.48 KB)
📄 ssh-agent(373.23 KB)
📄 ssh-copy-id(10.22 KB)
📄 ssh-keygen(409.4 KB)
📄 ssh-keyscan(434.7 KB)
📄 ssltap(118.41 KB)
📄 stat(77.19 KB)
📄 stdbuf(64.88 KB)
📄 strace(1009.22 KB)
📄 strace-log-merge(1.28 KB)
📄 stream(7.05 KB)
📄 strings(36.53 KB)
📄 strip(227.32 KB)
📄 stty(68.61 KB)
📄 su(31.38 KB)
📄 sudo(147.88 KB)
📄 sudoedit(147.88 KB)
📄 sudoreplay(56.11 KB)
📄 sum(36.55 KB)
📄 sxpm(19.83 KB)
📄 sync(28.33 KB)
📄 systemctl(704.8 KB)
📄 systemd-analyze(1.49 MB)
📄 systemd-ask-password(60.38 KB)
📄 systemd-cat(39.98 KB)
📄 systemd-cgls(326.31 KB)
📄 systemd-cgtop(85.09 KB)
📄 systemd-coredumpctl(154.52 KB)
📄 systemd-delta(76.84 KB)
📄 systemd-detect-virt(39.97 KB)
📄 systemd-escape(48.2 KB)
📄 systemd-firstboot(101.52 KB)
📄 systemd-hwdb(85.31 KB)
📄 systemd-inhibit(309.83 KB)
📄 systemd-loginctl(489.6 KB)
📄 systemd-machine-id-setup(52.23 KB)
📄 systemd-notify(48.13 KB)
📄 systemd-nspawn(545.88 KB)
📄 systemd-path(52.16 KB)
📄 systemd-run(387.05 KB)
📄 systemd-stdio-bridge(305.77 KB)
📄 systemd-sysv-convert(3.89 KB)
📄 systemd-tmpfiles(146.13 KB)
📄 systemd-tty-ask-password-agent(84.75 KB)
📄 tabs(15.3 KB)
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📄 tail(65.25 KB)
📄 tailf(23.88 KB)
📄 tapestat(52.56 KB)
📄 tar(338.02 KB)
📄 taskset(32.22 KB)
📄 tbl(115.96 KB)
📄 tclsh(7 KB)
📄 tclsh8.5(7 KB)
📄 tcptraceroute(1.44 KB)
📄 teamd(155.09 KB)
📄 teamdctl(28.98 KB)
📄 teamnl(19.09 KB)
📄 tee(32.38 KB)
📄 test(36.46 KB)
📄 testgdbm(29.77 KB)
📄 tic(64.26 KB)
📄 timedatectl(330.2 KB)
📄 timeout(53.31 KB)
📄 tload(15.38 KB)
📄 tmon(31.11 KB)
📄 toe(15.42 KB)
📄 top(104.38 KB)
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📄 tput(15.43 KB)
📄 tr(44.61 KB)
📄 tracepath(15.05 KB)
📄 tracepath6(15.05 KB)
📄 traceroute(61.86 KB)
📄 traceroute6(61.86 KB)
📄 troff(512.96 KB)
📄 true(28.26 KB)
📄 truncate(52.68 KB)
📄 trust(179.08 KB)
📄 tset(19.59 KB)
📄 tsort(36.47 KB)
📄 tty(28.29 KB)
📄 turbostat(113.15 KB)
📄 tzselect(7.17 KB)
📄 uapi(3.02 MB)
📄 ucs2any(19.47 KB)
📄 udevadm(414.27 KB)
📄 ul(19.47 KB)
📄 umask(29 B)
📄 umount(31.23 KB)
📄 unalias(31 B)
📄 uname(32.3 KB)
📄 unexpand(32.45 KB)
📄 unicode_start(2.5 KB)
📄 unicode_stop(363 B)
📄 uniq(44.71 KB)
📄 unix-lpr.sh(4.07 KB)
📄 unlink(28.3 KB)
📄 unlz4(105.87 KB)
📄 unshare(15.45 KB)
📄 unxz(73.52 KB)
📄 unzip(185.16 KB)
📄 unzipsfx(88.66 KB)
📄 update-ca-trust(1.03 KB)
📄 update-mime-database(52.82 KB)
📄 uptime(11.22 KB)
📄 urlgrabber(12.17 KB)
📄 users(32.42 KB)
📄 usleep(10.95 KB)
📄 utmpdump(15.45 KB)
📄 uuclient(14.97 KB)
📄 uuidgen(11.21 KB)
📄 vdir(114.85 KB)
📄 verifytree(10.79 KB)
📄 vi(906.4 KB)
📄 view(906.4 KB)
📄 vlock(15.73 KB)
📄 vmstat(31.48 KB)
📄 w(19.45 KB)
📄 wait(28 B)
📄 wall(14.98 KB)
📄 watch(24.14 KB)
📄 watchgnupg(15.35 KB)
📄 wc(40.67 KB)
📄 wdctl(40.7 KB)
📄 webpng(11.15 KB)
📄 wget(408.97 KB)
📄 whatis(45.49 KB)
📄 whereis(20.2 KB)
📄 which(23.77 KB)
📄 whiptail(27.84 KB)
📄 who(48.7 KB)
📄 whoami(28.3 KB)
📄 wish(7.04 KB)
📄 wish8.5(7.04 KB)
📄 wmf2eps(15.29 KB)
📄 wmf2fig(15.27 KB)
📄 wmf2gd(15.26 KB)
📄 wmf2svg(15.3 KB)
📄 wmf2x(15.25 KB)
📄 word-list-compress(11.03 KB)
📄 write(19.09 KB)
📄 x86_64(15.27 KB)
📄 x86_64-redhat-linux-c++(754.59 KB)
📄 x86_64-redhat-linux-g++(754.59 KB)
📄 x86_64-redhat-linux-gcc(750.58 KB)
📄 x86_energy_perf_policy(10.23 KB)
📄 xargs(60.91 KB)
📄 xgamma(11.15 KB)
📄 xgettext(265.35 KB)
📄 xhost(15.38 KB)
📄 xinput(52.81 KB)
📄 xkill(15.27 KB)
📄 xml2-config(1.68 KB)
📄 xmlcatalog(15.3 KB)
📄 xmllint(61.94 KB)
📄 xmlwf(24 KB)
📄 xmodmap(32.28 KB)
📄 xorg-x11-fonts-update-dirs(1.29 KB)
📄 xrandr(60.06 KB)
📄 xrdb(27.78 KB)
📄 xrefresh(11.16 KB)
📄 xset(31.72 KB)
📄 xsetmode(11.1 KB)
📄 xsetpointer(11.13 KB)
📄 xsetroot(19.38 KB)
📄 xslt-config(2.36 KB)
📄 xsltproc(23.5 KB)
📄 xstdcmap(15.77 KB)
📄 xsubpp(4.45 KB)
📄 xz(73.52 KB)
📄 xzcat(73.52 KB)
📄 xzcmp(6.48 KB)
📄 xzdec(11.21 KB)
📄 xzdiff(6.48 KB)
📄 xzegrep(5.76 KB)
📄 xzfgrep(5.76 KB)
📄 xzgrep(5.76 KB)
📄 xzless(1.76 KB)
📄 xzmore(2.11 KB)
📄 yes(28.3 KB)
📄 ypdomainname(15.41 KB)
📄 yum(801 B)
📄 yum-builddep(9.95 KB)
📄 yum-config-manager(9.35 KB)
📄 yum-debug-dump(8.34 KB)
📄 yum-debug-restore(7.72 KB)
📄 yum-groups-manager(10.77 KB)
📄 yumdownloader(10.85 KB)
📄 zcat(1.9 KB)
📄 zcmp(1.72 KB)
📄 zdiff(5.63 KB)
📄 zegrep(123 B)
📄 zfgrep(123 B)
📄 zforce(2.09 KB)
📄 zgrep(5.98 KB)
📄 zip(210.78 KB)
📄 zipcloak(98.1 KB)
📄 zipcmp(11.71 KB)
📄 zipdetails(47.32 KB)
📄 zipgrep(2.88 KB)
📄 zipinfo(185.16 KB)
📄 zipmerge(11.76 KB)
📄 zipnote(93.73 KB)
📄 zipsplit(97.75 KB)
📄 ziptorrent(11.6 KB)
📄 zless(1.99 KB)
📄 zlib_decompress(164.46 KB)
📄 zmore(2.79 KB)
📄 znew(5.22 KB)
📄 zone2json(21.39 MB)
📄 zone2sql(21.88 MB)
📄 zsoelim(32.59 KB)

Editing: autoupdate

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

# autoupdate - modernize an Autoconf file.
# Copyright (C) 1994, 1999-2012 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/>.

# Originally written by David MacKenzie <djm@gnu.ai.mit.edu>.
# Rewritten by Akim Demaille <akim@freefriends.org>.

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

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

# Lib files.
my $autom4te = $ENV{'AUTOM4TE'} || '/usr/bin/autom4te';
my $autoconf = "$autom4te --language=autoconf";
# We need to find m4sugar.
my @prepend_include;
my @include = ('/usr/share/autoconf');
my $force = 0;
# m4.
my $m4 = $ENV{"M4"} || '/usr/bin/m4';

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

Update each TEMPLATE-FILE if given, or `configure.ac' if present,
or else `configure.in', to the syntax of the current version of
Autoconf.  The original files are backed up.

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
  -f, --force                consider all files obsolete

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

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 = "autoupdate (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 David J. MacKenzie and Akim Demaille.
";

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

# parse_args ()
# -------------
# Process any command line arguments.
sub parse_args ()
{
  my $srcdir;

getopt ('I|include=s'         => \@include,
	  'B|prepend-include=s' => \@prepend_include,
	  'f|force'             => \$force);

if (! @ARGV)
    {
      my $configure_ac = require_configure_ac;
      push @ARGV, $configure_ac;
    }
}

# ----------------- #
# Autoconf macros.  #
# ----------------- #

my (%ac_macros, %au_macros, %m4_builtins);

# HANDLE_AUTOCONF_MACROS ()
# -------------------------
# @M4_BUILTINS -- M4 builtins and a useful comment.
sub handle_autoconf_macros ()
{
  # Get the builtins.
  xsystem ("echo dumpdef | $m4 2>" . shell_quote ("$tmp/m4.defs") . " >/dev/null");
  my $m4_defs = new Autom4te::XFile "< " . open_quote ("$tmp/m4.defs");
  while ($_ = $m4_defs->getline)
    {
      $m4_builtins{$1} = 1
	if /^(\w+):/;
    }
  $m4_defs->close;

my $macros = new Autom4te::XFile ("$autoconf"
				    . " --trace AU_DEFINE:'AU:\$f:\$1'"
				    . " --trace define:'AC:\$f:\$1'"
				    . " --melt /dev/null |");
  while ($_ = $macros->getline)
    {
      chomp;
      my ($domain, $file, $macro) = /^(AC|AU):(.*):([^:]*)$/ or next;
      if ($domain eq "AU")
	{
	  $au_macros{$macro} = 1;
	}
      elsif ($file =~ /(^|\/)m4sugar\/(m4sugar|version)\.m4$/)
	{
	  # Add the m4sugar macros to m4_builtins.
	  $m4_builtins{$macro} = 1;
	}
      else
	{
	  # Autoconf, aclocal, and m4sh macros.
	  $ac_macros{$macro} = 1;
	}
    }
  $macros->close;

# Don't keep AU macros in @AC_MACROS.
  delete $ac_macros{$_}
    foreach (keys %au_macros);
  # Don't keep M4sugar macros which are redefined by Autoconf,
  # such as `builtin', `changequote' etc.  See autoconf/autoconf.m4.
  delete $ac_macros{$_}
    foreach (keys %m4_builtins);
  error "no current Autoconf macros found"
    unless keys %ac_macros;
  error "no obsolete Autoconf macros found"
    unless keys %au_macros;

if ($debug)
    {
      print STDERR "Current Autoconf macros:\n";
      print STDERR join (' ', sort keys %ac_macros) . "\n\n";
      print STDERR "Obsolete Autoconf macros:\n";
      print STDERR join (' ', sort keys %au_macros) . "\n\n";
    }

# ac.m4 -- autoquoting definitions of the AC macros (M4sugar excluded).
  # unac.m4 -- undefine the AC macros.
  my $ac_m4 = new Autom4te::XFile "> " . open_quote ("$tmp/ac.m4");
  print $ac_m4 "# ac.m4 -- autoquoting definitions of the AC macros.\n";
  my $unac_m4 = new Autom4te::XFile "> " . open_quote ("$tmp/unac.m4");
  print $unac_m4 "# unac.m4 -- undefine the AC macros.\n";
  foreach (sort keys %ac_macros)
    {
      print $ac_m4   "_au_m4_define([$_], [m4_if(\$#, 0, [[\$0]], [[\$0(\$\@)]])])\n";
      print $unac_m4 "_au_m4_undefine([$_])\n";
    }

# m4save.m4 -- save the m4 builtins.
  # unm4.m4 -- disable the m4 builtins.
  # m4.m4 -- enable the m4 builtins.
  my $m4save_m4 = new Autom4te::XFile "> " . open_quote ("$tmp/m4save.m4");
  print $m4save_m4 "# m4save.m4 -- save the m4 builtins.\n";
  my $unm4_m4 = new Autom4te::XFile "> " . open_quote ("$tmp/unm4.m4");
  print $unm4_m4 "# unm4.m4 -- disable the m4 builtins.\n";
  my $m4_m4 = new Autom4te::XFile "> " . open_quote ("$tmp/m4.m4");
  print $m4_m4 "# m4.m4 -- enable the m4 builtins.\n";
  foreach (sort keys %m4_builtins)
    {
      print $m4save_m4 "_au__save([$_])\n";
      print $unm4_m4   "_au__undefine([$_])\n";
      print $m4_m4     "_au__restore([$_])\n";
    }
}

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

parse_args;
$autoconf .= " --debug" if $debug;
$autoconf .= " --force" if $force;
$autoconf .= " --verbose" if $verbose;
$autoconf .= join (' --include=', '', map { shell_quote ($_) } @include);
$autoconf .= join (' --prepend-include=', '', map { shell_quote ($_) } @prepend_include);

mktmpdir ('au');
handle_autoconf_macros;

# $au_changequote -- enable the quote `[', `]' right before any AU macro.
my $au_changequote =
  's/\b(' . join ('|', keys %au_macros) . ')\b/_au_m4_changequote([,])$1/g';

# au.m4 -- definitions the AU macros.
xsystem ("$autoconf --trace AU_DEFINE:'_au_defun(\@<:\@\$1\@:>\@,
\@<:\@\$2\@:>\@)' --melt /dev/null "
	. ">" . shell_quote ("$tmp/au.m4"));

## ------------------- ##
## Process the files.  ##
## ------------------- ##

foreach my $file (@ARGV)
  {
    # We need an actual file.
    if ($file eq '-')
      {
	$file = "$tmp/stdin";
	system "cat >" . shell_quote ($file);
      }
    elsif (! -r "$file")
      {
	die "$me: $file: No such file or directory";
      }

# input.m4 -- m4 program to produce the updated file.
    # Load the values, the dispatcher, neutralize m4, and the prepared
    # input file.
    my $input_m4 = <<\EOF;
      divert(-1)                                            -*- Autoconf -*-
      changequote([,])

# Define our special macros:
      define([_au__defn], defn([defn]))
      define([_au__divert], defn([divert]))
      define([_au__ifdef], defn([ifdef]))
      define([_au__include], defn([include]))
      define([_au___undefine], defn([undefine]))
      define([_au__undefine], [_au__ifdef([$1], [_au___undefine([$1])])])
      define([_au__save], [m4_ifdef([$1],
	[m4_define([_au_$1], _m4_defn([$1]))])])
      define([_au__restore],
	[_au_m4_ifdef([_au_$1],
	  [_au_m4_define([$1], _au__defn([_au_$1]))])])

# Set up m4sugar.
      include(m4sugar/m4sugar.m4)

# Redefine __file__ to make warnings nicer; $file is replaced below.
      m4_define([__file__], [$file])

# Redefine m4_location to fix the line number.
      m4_define([m4_location], [__file__:m4_eval(__line__ - _au__first_line)])

# Move all the builtins into the `_au_' pseudo namespace
      m4_include([m4save.m4])

# _au_defun(NAME, BODY)
      # ---------------------
      # Define NAME to BODY, plus AU activation/deactivation.
      _au_m4_define([_au_defun],
      [_au_m4_define([$1],
      [_au_enable()dnl
      $2[]dnl
      _au_disable()])])

# Import the definition of the obsolete macros.
      _au__include([au.m4])

## ------------------------ ##
      ## _au_enable/_au_disable.  ##
      ## ------------------------ ##

# They work by pair: each time an AU macro is activated, it runs
      # _au_enable, and at its end its runs _au_disable (see _au_defun
      # above).  AU macros might use AU macros, which should
      # enable/disable only for the outer AU macros.
      #
      # `_au_enabled' is used to this end, determining whether we really
      # enable/disable.

# __au_enable
      # -----------
      # Reenable the builtins, m4sugar, and the autoquoting AC macros.
      _au_m4_define([__au_enable],
      [_au__divert(-1)
      # Enable special characters.
      _au_m4_changecom([#])

_au__include([m4.m4])
      _au__include([ac.m4])

_au__divert(0)])

# _au_enable
      # ----------
      # Called at the beginning of all the obsolete macros.  If this is the
      # outermost level, call __au_enable.
      _au_m4_define([_au_enable],
      [_au_m4_ifdef([_au_enabled],
		 [],
		 [__au_enable()])_au_dnl
      _au_m4_pushdef([_au_enabled])])

# __au_disable
      # ------------
      # Disable the AC autoquoting macros, m4sugar, and m4.
      _au_m4_define([__au_disable],
      [_au__divert(-1)
      _au__include([unac.m4])
      _au__include([unm4.m4])

# Disable special characters.
      _au_m4_changequote()
      _au_m4_changecom()

_au__divert(0)])

# _au_disable
      # -----------
      # Called at the end of all the obsolete macros.  If we are at the
      # outermost level, call __au_disable.
      _au_m4_define([_au_disable],
      [_au_m4_popdef([_au_enabled])_au_dnl
      _au_m4_ifdef([_au_enabled],
		[],
		[__au_disable()])])

## ------------------------------- ##
      ## Disable, and process the file.  ##
      ## ------------------------------- ##
      # The AC autoquoting macros are not loaded yet, hence invoking
      # `_au_disable' would be wrong.
      _au__include([unm4.m4])

# Disable special characters, and set the first line number.
      _au_m4_changequote()
      _au_m4_changecom()

_au_m4_define(_au__first_line, _au___line__)_au__divert(0)_au_dnl
EOF

$input_m4 =~ s/^      //mg;
    $input_m4 =~ s/\$file/$file/g;

# prepared input -- input, but reenables the quote before each AU macro.
    open INPUT_M4, "> " . open_quote ("$tmp/input.m4")
       or error "cannot open: $!";
    open FILE, "< " . open_quote ($file)
       or error "cannot open: $!";
    print INPUT_M4 "$input_m4";
    while (<FILE>)
       {
	 eval $au_changequote;
	 print INPUT_M4;
       }
    close FILE
       or error "cannot close $file: $!";
    close INPUT_M4
       or error "cannot close $tmp/input.m4: $!";

# Now ask m4 to perform the update.
    xsystem ("$m4 --include=" . shell_quote ($tmp)
	     . join (' --include=', '', map { shell_quote ($_) } reverse (@prepend_include))
	     . join (' --include=', '', map { shell_quote ($_) } @include)
	     . " " . shell_quote ("$tmp/input.m4") . " > " . shell_quote ("$tmp/updated"));
    update_file ("$tmp/updated",
		 "$file" eq "$tmp/stdin" ? '-' : "$file");
  }
exit 0;

#		  ## ---------------------------- ##
#		  ## How `autoupdate' functions.  ##
#		  ## ---------------------------- ##
#
# The task of `autoupdate' is not trivial: the biggest difficulty being
# that you must limit the changes to the parts that really need to be
# updated.  Finding a satisfying implementation proved to be quite hard,
# as this is the fifth implementation of `autoupdate'.
#
# Below, we will use a simple example of an obsolete macro:
#
#     AU_DEFUN([OLD], [NEW([$1, $2], m4_eval([$1 + $2]))])
#     AC_DEFUN([NEW], [echo "sum($1) = $2"])
#
# the input file contains
#
#     dnl The Unbelievable Truth
#     OLD(1, 2)
#     NEW([0, 0], [0])
#
# Of course the expected output is
#
#     dnl The Unbelievable Truth
#     NEW([1, 2], [3])
#     NEW([0, 0], [0])
#
#
# # First implementation: sed
# # =========================
#
# The first implementation was only able to change the name of obsolete
# macros.
#
# The file `acoldnames.m4' defined the old names based on the new names.
# It was simple then to produce a sed script such as:
#
#     s/OLD/NEW/g
#
# Updating merely consisted in running this script on the file to
# update.
#
# This scheme suffers from an obvious limitation: that `autoupdate' was
# unable to cope with new macros that just swap some of its arguments
# compared to the old macro.  Fortunately, that was enough to upgrade
# from Autoconf 1 to Autoconf 2.  (But I have no idea whether the
# changes in Autoconf 2 were precisely limited by this constraint.)
#
#
# # Second implementation: hooks
# # ============================
#
# The version 2.15 of Autoconf brought a vast number of changes compared
# to 2.13, so a solution was needed.  One could think of extending the
# `sed' scripts with specialized code for complex macros.  However, this
# approach is of course full of flaws:
#
# a. the Autoconf maintainers have to write these snippets, which we
#    just don't want to,
#
# b. I really don't think you'll ever manage to handle the quoting of
#    m4 with a sed script.
#
# To satisfy a., let's remark that the code which implements the old
# features in term of the new feature is exactly the code which should
# replace the old code.
#
# To answer point b, as usual in the history of Autoconf, the answer, at
# least on the paper, is simple: m4 is the best tool to parse m4, so
# let's use m4.
#
# Therefore the specification is:
#
#     I want to be able to tell Autoconf, well, m4, that the macro I
#     am currently defining is an obsolete macro (so that the user is
#     warned), and its code is the code to use when running autoconf,
#     but that the very same code has to be used when running
#     autoupdate.  To summarize, the interface I want is
#     `AU_DEFUN(OLD-NAME, NEW-CODE)'.
#
#
# Now for the technical details.
#
# When running autoconf, except for the warning, AU_DEFUN is basically
# AC_DEFUN.
#
# When running autoupdate, we want *only* OLD-NAMEs to be expanded.
# This obviously means that acgeneral.m4 and acspecific.m4 must not be
# loaded.  Nonetheless, because we want to use a rich set of m4
# features, m4sugar.m4 is needed.  Please note that the fact that
# Autoconf's macros are not loaded is positive on two points:
#
# - we do get an updated `configure.ac', not a `configure'!
#
# - the old macros are replaced by *calls* to the new-macros, not the
#   body of the new macros, since their body is not defined!!!
#   (Whoa, that's really beautiful!).
#
# Additionally we need to disable the quotes when reading the input for
# two reasons: first because otherwise `m4' will swallow the quotes of
# other macros:
#
#     NEW([1, 2], 3)
#     => NEW(1, 2, 3)
#
# and second, because we want to update the macro calls which are
# quoted, i.e., we want
#
#     FOO([OLD(1, 2)])
#     => FOO([NEW([1, 2], [3])])
#
# If we don't disable the quotes, only the macros called at the top
# level would be updated.
#
# So, let's disable the quotes.
#
# Well, not quite: m4sugar.m4 still needs to use quotes for some macros.
# Well, in this case, when running in autoupdate code, each macro first
# reestablishes the quotes, expands itself, and disables the quotes.
#
# Thinking a bit more, you realize that in fact, people may use `define',
# `ifelse' etc. in their files, and you certainly don't want to process
# them.  Another example is `dnl': you don't want to remove the
# comments.  You then realize you don't want exactly to import m4sugar:
# you want to specify when it is enabled (macros active), and disabled.
# m4sugar provides m4_disable/m4_enable to this end.
#
# You're getting close to it.  Now remains one task: how to handle
# twofold definitions?
#
# Remember that the same AU_DEFUN must be understood in two different
# ways, the AC way, and the AU way.
#
# One first solution is to check whether acgeneral.m4 was loaded.  But
# that's definitely not cute.  Another is simply to install `hooks',
# that is to say, to keep in some place m4 knows, late `define' to be
# triggered *only* in AU mode.
#
# You first think of designing AU_DEFUN like this:
#
# 1. AC_DEFUN(OLD-NAME,
#	      [Warn the user OLD-NAME is obsolete.
#	       NEW-CODE])
#
# 2. Store for late AU binding([define(OLD_NAME,
#				[Reestablish the quotes.
#				 NEW-CODE
#				 Disable the quotes.])])
#
# but this will not work: NEW-CODE probably uses $1, $2 etc. and these
# guys will be replaced with the argument of `Store for late AU binding'
# when you call it.
#
# I don't think there is a means to avoid this using this technology
# (remember that $1 etc. are *always* expanded in m4).  You may also try
# to replace them with $[1] to preserve them for a later evaluation, but
# if `Store for late AU binding' is properly written, it will remain
# quoted till the end...
#
# You have to change technology.  Since the problem is that `$1'
# etc. should be `consumed' right away, one solution is to define now a
# second macro, `AU_OLD-NAME', and to install a hook than binds OLD-NAME
# to AU_OLD-NAME.  Then, autoupdate.m4 just need to run the hooks.  By
# the way, the same method was used in autoheader.
#
#
# # Third implementation: m4 namespaces by m4sugar
# # ==============================================
#
# Actually, this implementation was just a clean up of the previous
# implementation: instead of defining hooks by hand, m4sugar was equipped
# with `namespaces'.  What are they?
#
# Sometimes we want to disable some *set* of macros, and restore them
# later.  We provide support for this via namespaces.
#
# There are basically three characters playing this scene: defining a
# macro in a namespace, disabling a namespace, and restoring a namespace
# (i.e., all the definitions it holds).
#
# Technically, to define a MACRO in NAMESPACE means to define the macro
# named `NAMESPACE::MACRO' to the VALUE.  At the same time, we append
# `undefine(NAME)' in the macro named `m4_disable(NAMESPACE)', and
# similarly a binding of NAME to the value of `NAMESPACE::MACRO' in
# `m4_enable(NAMESPACE)'.  These mechanisms allow to bind the macro of
# NAMESPACE and to unbind them at will.
#
# Of course this implementation is really inefficient: m4 has to grow
# strings which can become quickly huge, which slows it significantly.
#
# In particular one should avoid as much as possible to use `define' for
# temporaries.  Now that `define' has quite a complex meaning, it is an
# expensive operations that should be limited to macros.  Use
# `m4_define' for temporaries.
#
# Private copies of the macros we used in entering / exiting the m4sugar
# namespace.  It is much more convenient than fighting with the renamed
# version of define etc.
#
#
#
# Those two implementations suffered from serious problems:
#
# - namespaces were really expensive, and incurred a major performance
#   loss on `autoconf' itself, not only `autoupdate'.  One solution
#   would have been the limit the use of namespaces to `autoupdate', but
#   that's again some complications on m4sugar, which really doesn't need
#   this.  So we wanted to get rid of the namespaces.
#
# - since the quotes were disabled, autoupdate was sometimes making
#   wrong guesses, for instance on:
#
#     foo([1, 2])
#
#   m4 saw 2 arguments: `[1'and `2]'.  A simple solution, somewhat
#   fragile, is to reestablish the quotes right before all the obsolete
#   macros, i.e., to use sed so that the previous text becomes
#
#     changequote([, ])foo([1, 2])
#
#   To this end, one wants to trace the definition of obsolete macros.
#
# It was there that the limitations of the namespace approach became
# painful: because it was a complex machinery playing a lot with the
# builtins of m4 (hence, quite fragile), tracing was almost impossible.
#
#
# So this approach was dropped.
#
#
# # The fourth implementation: two steps
# # ====================================
#
# If you drop the uses of namespaces, you no longer can compute the
# updated value, and replace the old call with it simultaneously.
#
# Obviously you will use m4 to compute the updated values, but you may
# use some other tool to achieve the replacement.  Personally, I trust
# nobody but m4 to parse m4, so below, m4 will perform the two tasks.
#
# How can m4 be used to replace *some* macros calls with newer values.
# Well, that's dead simple: m4 should learn the definitions of obsolete
# macros, forget its builtins, disable the quotes, and then run on the
# input file, which amounts to doing this:
#
#     divert(-1)dnl
#     changequote([, ])
#     define([OLD], [NEW([$1, $2], m4_eval([$1 + $2]))changequote()])
#     undefine([dnl])
#     undefine([m4_eval])
#     # Some more undefines...
#     changequote()
#     divert(0)dnl
#     dnl The Unbelievable Truth
#     changequote([, ])OLD(1, 2)
#     NEW([0, 0],
#	  0)
#
# which will result in
#
#     dnl The Unbelievable Truth
#     NEW(1, 2, m4_eval(1 + 2))
#     NEW([0, 0],
#	  0)
#
# Grpmh.  Two problems.  A minor problem: it would have been much better
# to have the `m4_eval' computed, and a major problem: you lost the
# quotation in the result.
#
# Let's address the big problem first.  One solution is to define any
# modern macro to rewrite its calls with the proper quotation, thanks to
# `$@'.  Again, tracing the `define's makes it possible to know which
# are these macros, so you input is:
#
#     divert(-1)dnl
#     changequote([, ])
#     define([OLD], [NEW([$1, $2], m4_eval([$1 + $2]))changequote()])
#     define([NEW], [[NEW($@)]changequote()])
#     undefine([dnl])
#     undefine([m4_eval])
#     # Some more undefines...
#     changequote()
#     divert(0)dnl
#     dnl The Unbelievable Truth
#     changequote([, ])OLD(1, 2)
#     changequote([, ])NEW([0, 0],
#	  0)
#
# which results in
#
#     dnl The Unbelievable Truth
#     NEW([1, 2],[m4_eval(1 + 2)])
#     NEW([0, 0],[0])
#
# Our problem is solved, i.e., the first call to `NEW' is properly
# quoted, but introduced another problem: we changed the layout of the
# second calls, which can be a drama in the case of huge macro calls
# (think of `AC_TRY_RUN' for instance).  This example didn't show it,
# but we also introduced parens to macros which did not have some:
#
#     AC_INIT
#     => AC_INIT()
#
# No big deal for the semantics (unless the macro depends upon $#, which
# is bad), but the users would not be happy.
#
# Additionally, we introduced quotes that were not there before, which is
# OK in most cases, but could change the semantics of the file.
#
# Cruel dilemma: we do want the auto-quoting definition of `NEW' when
# evaluating `OLD', but we don't when we evaluate the second `NEW'.
# Back to namespaces?
#
# No.
#
#
# # Second step: replacement
# # ------------------------
#
# No, as announced above, we will work in two steps: in a first step we
# compute the updated values, and in a second step we replace them.  Our
# goal is something like this:
#
#     divert(-1)dnl
#     changequote([, ])
#     define([OLD], [NEW([1, 2], [3])changequote()])
#     undefine([dnl])
#     undefine([m4_eval])
#     # Some more undefines...
#     changequote()
#     divert(0)dnl
#     dnl The Unbelievable Truth
#     changequote([, ])OLD(1, 2)
#     NEW([0, 0],
#	  0)
#
# i.e., the new value of `OLD' is precomputed using the auto-quoting
# definition of `NEW' and the m4 builtins.  We'll see how afterwards,
# let's finish with the replacement.
#
# Of course the solution above is wrong: if there were other calls to
# `OLD' with different values, we would smash them to the same value.
# But it is quite easy to generalize the scheme above:
#
#     divert(-1)dnl
#     changequote([, ])
#     define([OLD([1],[2])], [NEW([1, 2], [3])])
#     define([OLD], [defn([OLD($@)])changequote()])
#     undefine([dnl])
#     undefine([m4_eval])
#     # Some more undefines...
#     changequote()
#     divert(0)dnl
#     dnl The Unbelievable Truth
#     changequote([, ])OLD(1, 2)
#     NEW([0, 0],
#	  0)
#
# i.e., for each call to obsolete macros, we build an array `call =>
# value', and use a macro to dispatch these values.  This results in:
#
#     dnl The Unbelievable Truth
#     NEW([1, 2], [3])
#     NEW([0, 0],
#	  0)
#
# In French, we say `Youpi !', which you might roughly translate as
# `Yippee!'.
#
#
# # First step: computation
# # -----------------------
#
# Let's study the anatomy of the file, and name its sections:
#
# prologue
#     divert(-1)dnl
#     changequote([, ])
# values
#     define([OLD([1],[2])], [NEW([1, 2], [3])])
# dispatcher
#     define([OLD], [defn([OLD($@)])changequote()])
# disabler
#     undefine([dnl])
#     undefine([m4_eval])
#     # Some more undefines...
#     changequote()
#     divert(0)dnl
# input
#     dnl The Unbelievable Truth
#     changequote([, ])OLD(1, 2)
#     NEW([0, 0],
#	  0)
#
#
# # Computing the `values' section
# # ..............................
#
# First we need to get the list of all the AU macro uses.  To this end,
# first get the list of all the AU macros names by tracing `AU_DEFUN' in
# the initialization of autoconf.  This list is computed in the file
# `au.txt' below.
#
# Then use this list to trace all the AU macro uses in the input.  The
# goal is obtain in the case of our example:
#
#     [define([OLD([1],[2])],]@<<@OLD([1],[2])@>>@[)]
#
# This is the file `values.in' below.
#
# We want to evaluate this with only the builtins (in fact m4sugar), the
# auto-quoting definitions of the new macros (`new.m4'), and the
# definition of the old macros (`old.m4').  Computing these last two
# files is easy: it's just a matter of using the right `--trace' option.
#
# So the content of `values.in' is:
#
#     include($autoconf_dir/m4sugar.m4)
#     m4_include(new.m4)
#     m4_include(old.m4)
#     divert(0)dnl
#     [define([OLD([1],[2])],]@<<@OLD([1],[2])@>>@[)]
#
# We run m4 on it, which yields:
#
#     define([OLD([1],[2])],@<<@NEW([1, 2], [3])@>>@)
#
# Transform `@<<@' and `@>>@' into quotes and we get
#
#     define([OLD([1],[2])],[NEW([1, 2], [3])])
#
# This is `values.m4'.
#
#
# # Computing the `dispatcher' section
# # ..................................
#
# The `prologue', and the `disabler' are simple and need no commenting.
#
# To compute the `dispatcher' (`dispatch.m4'), again, it is a simple
# matter of using the right `--trace'.
#
# Finally, the input is not exactly the input file, rather it is the
# input file with the added `changequote'.  To this end, we build
# `quote.sed'.
#
#
# # Putting it all together
# # .......................
#
# We build the file `input.m4' which contains:
#
#     divert(-1)dnl
#     changequote([, ])
#     include(values.m4)
#     include(dispatch.m4)
#     undefine([dnl])
#     undefine([eval])
#     # Some more undefines...
#     changequote()
#     divert(0)dnl
#     dnl The Unbelievable Truth
#     changequote([, ])OLD(1, 2)
#     NEW([0, 0],
#	  0)
#
# And we just run m4 on it.  Et voila`, Monsieur !  Mais oui, mais oui.
#
# Well, there are a few additional technicalities.  For instance, we
# rely on `changequote', `ifelse' and `defn', but we don't want to
# interpret the changequotes of the user, so we simply use another name:
# `_au_changequote' etc.
#
#
# # Failure of the fourth approach
# # ------------------------------
#
# This approach is heavily based on traces, but then there is an obvious
# problem: non expanded code will never be seen.  In particular, the body
# of a `define' definition is not seen, so on the input
#
#	  define([idem], [OLD(0, [$1])])
#
# autoupdate would never see the `OLD', and wouldn't have updated it.
# Worse yet, if `idem(0)' was used later, then autoupdate sees that
# `OLD' is used, computes the result for `OLD(0, 0)' and sets up a
# dispatcher for `OLD'.  Since there was no computed value for `OLD(0,
# [$1])', the dispatcher would have replaced with... nothing, leading
# to
#
#	  define([idem], [])
#
# With some more thinking, you see that the two step approach is wrong,
# the namespace approach was much saner.
#
# But you learned a lot, in particular you realized that using traces
# can make it possible to simulate namespaces!
#
#
#
# # The fifth implementation: m4 namespaces by files
# # ================================================
#
# The fourth implementation demonstrated something unsurprising: you
# cannot precompute, i.e., the namespace approach was the right one.
# Still, we no longer want them, they're too expensive.  Let's have a
# look at the way it worked.
#
# When updating
#
#     dnl The Unbelievable Truth
#     OLD(1, 2)
#     NEW([0, 0], [0])
#
# you evaluate `input.m4':
#
#     divert(-1)
#     changequote([, ])
#     define([OLD],
#     [m4_enable()NEW([$1, $2], m4_eval([$1 + $2]))m4_disable()])
#     ...
#     m4_disable()
#     dnl The Unbelievable Truth
#     OLD(1, 2)
#     NEW([0, 0], [0])
#
# where `m4_disable' undefines the m4 and m4sugar, and disables the quotes
# and comments:
#
#     define([m4_disable],
#     [undefine([__file__])
#     ...
#     changecom(#)
#     changequote()])
#
# `m4_enable' does the converse: reestablish quotes and comments
# --easy--, reestablish m4sugar --easy: just load `m4sugar.m4' again-- and
# reenable the builtins.  This later task requires that you first save
# the builtins.  And BTW, the definition above of `m4_disable' cannot
# work: you undefined `changequote' before using it!  So you need to use
# your privates copies of the builtins.  Let's introduce three files for
# this:
#
#  `m4save.m4'
#    moves the m4 builtins into the `_au_' pseudo namespace,
#  `unm4.m4'
#    undefines the builtins,
#  `m4.m4'
#    restores them.
#
# So `input.m4' is:
#
#     divert(-1)
#     changequote([, ])
#
#     include([m4save.m4])
#
#     # Import AU.
#     define([OLD],
#     [m4_enable()NEW([$1, $2], m4_eval([$1 + $2]))m4_disable()])
#
#     define([_au_enable],
#     [_au_changecom([#])
#     _au_include([m4.m4])
#     _au_include(m4sugar.m4)])
#
#     define([_au_disable],
#     [# Disable m4sugar.
#     # Disable the m4 builtins.
#     _au_include([unm4.m4])
#     # 1. Disable special characters.
#     _au_changequote()
#     _au_changecom()])
#
#     m4_disable()
#     dnl The Unbelievable Truth
#     OLD(1, 2)
#     NEW([0, 0], [0])
#
# Based on what we learned in the fourth implementation we know that we
# have to enable the quotes *before* any AU macro, and we know we need
# to build autoquoting versions of the AC macros.  But the autoquoting
# AC definitions must be disabled in the rest of the file, and enabled
# inside AU macros.
#
# Using `autoconf --trace' it is easy to build the files
#
#   `ac.m4'
#     define the autoquoting AC fake macros
#   `disable.m4'
#     undefine the m4sugar and AC autoquoting macros.
#   `au.m4'
#     definitions of the AU macros (such as `OLD' above).
#
# Now, `input.m4' is:
#
#     divert(-1)
#     changequote([, ])
#
#     include([m4save.m4])
#     # Import AU.
#     include([au.m4])
#
#     define([_au_enable],
#     [_au_changecom([#])
#     _au_include([m4.m4])
#     _au_include(m4sugar.m4)
#     _au_include(ac.m4)])
#
#     define([_au_disable],
#     [_au_include([disable.m4])
#     _au_include([unm4.m4])
#     # 1. Disable special characters.
#     _au_changequote()
#     _au_changecom()])
#
#     m4_disable()
#     dnl The Unbelievable Truth
#     _au_changequote([, ])OLD(1, 2)
#     NEW([0, 0], [0])
#
# Finally, version V is ready.
#
# Well... almost.
#
# There is a slight problem that remains: if an AU macro OUTER includes
# an AU macro INNER, then _au_enable will be run when entering OUTER
# and when entering INNER (not good, but not too bad yet).  But when
# getting out of INNER, _au_disable will disable everything while we
# were still in OUTER.  Badaboom.
#
# Therefore _au_enable and _au_disable have to be written to work by
# pairs: each _au_enable pushdef's _au_enabled, and each _au_disable
# popdef's _au_enabled.  And of course _au_enable and _au_disable are
# effective when _au_enabled is *not* defined.
#
# Finally, version V' is ready.  And there is much rejoicing.  (And I
# have free time again.  I think.  Yeah, right.)

### 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:

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