This file is indexed.

/usr/bin/texi2any is in texinfo 6.5.0.dfsg.1-2.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
#! /usr/bin/perl

# texi2any: Texinfo converter.
#
# Copyright 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
# 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/>.
# 
# Original author: Patrice Dumas <pertusus@free.fr>
# Parts (also from Patrice Dumas) come from texi2html.pl or texi2html.init.

# for POSIX::setlocale and File::Spec
require 5.00405;

use strict;

# for file names portability
use File::Spec;
# to determine the path separator and null file
use Config;
# for dirname and fileparse
use File::Basename;
#use Cwd;
use Getopt::Long qw(GetOptions);
# for carp
#use Carp;

Getopt::Long::Configure("gnu_getopt");

# This big BEGIN block deals with finding modules and 
# some dependencies that we ship 
# * in source or
# * installed or
# * installed relative to the script
BEGIN
{
  # emulate -w
  $^W = 1;
  my ($real_command_name, $command_directory, $command_suffix) 
     = fileparse($0, '.pl');
  my $updir = File::Spec->updir();

  # These are substituted by the Makefile to create "texi2any".
  my $datadir = '/usr/share';
  my $package = 'texinfo';
  my $packagedir = '/usr/lib/texinfo';

  if ($datadir eq '@' .'datadir@' or $package eq '@' . 'PACKAGE@'
      or $packagedir eq '@' .'pkglibdir@'
      or defined($ENV{'TEXINFO_DEV_SOURCE'})
         and $ENV{'TEXINFO_DEV_SOURCE'} ne '0')
  {
    # Use uninstalled modules

    # To find Texinfo::ModulePath
    if (!defined($ENV{'top_builddir'})) {
      $ENV{'top_builddir'} = File::Spec->catdir($command_directory, $updir);
    }
    unshift @INC, File::Spec->catdir($ENV{'top_builddir'}, 'tp');

    if (defined($ENV{'top_srcdir'})) {
      my $lib_dir = File::Spec->catdir($ENV{'top_srcdir'}, 'tp');
      unshift @INC, $lib_dir;
    }

    require Texinfo::ModulePath;
    Texinfo::ModulePath::init();
  } else {
    # Look for modules in their installed locations.

    my $lib_dir = File::Spec->catdir($datadir, $package);

    # try to make package relocatable, will only work if
    # standard relative paths are used
    if (! -f File::Spec->catfile($lib_dir, 'Texinfo', 'Parser.pm')
        and -f File::Spec->catfile($command_directory, $updir, 'share', 
                                   'texinfo', 'Texinfo', 'Parser.pm')) {
      $lib_dir = File::Spec->catdir($command_directory, $updir, 
                                          'share', 'texinfo');
    }
    unshift @INC, $lib_dir;

    require Texinfo::ModulePath;
    Texinfo::ModulePath::init($lib_dir, $packagedir);
  }
} # end BEGIN

BEGIN {
  my $enable_xs = 'yes';
  if ($enable_xs eq 'no') {
    package Texinfo::XSLoader;
    our $disable_XS;
    $disable_XS = 1;
  }
}

use Locale::Messages;
use Texinfo::Common;
use Texinfo::Convert::Converter;

my ($real_command_name, $command_directory, $command_suffix) 
   = fileparse($0, '.pl');

# this associates the command line options to the arrays set during
# command line parsing.
my @css_files = ();
my @css_refs = ();
my $cmdline_options = { 'CSS_FILES' => \@css_files,
                        'CSS_REFS' => \@css_refs };

# determine the path separators
my $path_separator = $Config{'path_sep'};
$path_separator = ':' if (!defined($path_separator));
my $quoted_path_separator = quotemeta($path_separator);

# Paths and file names
my $curdir = File::Spec->curdir();
my $updir = File::Spec->updir();

# set by configure, prefix for the sysconfdir and so on
# This could be used in the eval
my $prefix = '/usr';
my $datarootdir;
my $sysconfdir;
my $pkgdatadir;
my $datadir;

my $fallback_prefix = File::Spec->catdir(File::Spec->rootdir(), 'usr', 'local');

# We need to eval as $prefix has to be expanded. However when we haven't
# run configure @sysconfdir will be expanded as an array, thus we verify
# whether configure was run or not
if ('/usr/etc' ne '@' . 'sysconfdir@') {
  $sysconfdir = eval '"/usr/etc"';
} else {
  $sysconfdir = File::Spec->catdir($fallback_prefix, 'etc');
}

if ('/usr/share' ne '@' . 'datarootdir@') {
  $datarootdir = eval '"/usr/share"';
} else {
  $datarootdir = File::Spec->catdir($fallback_prefix, 'share');
}

if ('/usr/share' ne '@' . 'datadir@' and 'texinfo' ne '@' . 'PACKAGE@') {
  $datadir = eval '"/usr/share"';
  my $package = 'texinfo';
  $pkgdatadir = File::Spec->catdir($datadir, $package);
} else {
  $datadir = File::Spec->catdir($fallback_prefix, 'share');
  $pkgdatadir = File::Spec->catdir($datadir, 'texinfo');
}

# work-around in case libintl-perl do not do it itself
# see http://www.gnu.org/software/gettext/manual/html_node/The-LANGUAGE-variable.html#The-LANGUAGE-variable

if ((defined($ENV{"LC_ALL"}) and $ENV{"LC_ALL"} =~ /^(C|POSIX)$/)
     or (defined($ENV{"LANG"}) and $ENV{"LANG"} =~ /^(C|POSIX)$/)) {
  delete $ENV{"LANGUAGE"} if defined($ENV{"LANGUAGE"});
}


#my $messages_textdomain = 'texinfo';
my $messages_textdomain = 'texinfo';
$messages_textdomain = 'texinfo' if ($messages_textdomain eq '@'.'PACKAGE@');
my $strings_textdomain = 'texinfo' . '_document';
$strings_textdomain = 'texinfo_document' 
   if ($strings_textdomain eq '@'.'PACKAGE@' . '_document');

sub __($) {
  my $msgid = shift;
  return Locale::Messages::dgettext($messages_textdomain, $msgid);
}

sub __p($$) {
  my $context = shift;
  my $msgid = shift;
  return Locale::Messages::dpgettext($messages_textdomain, $context, $msgid);
}

my $srcdir;
if (defined($ENV{'top_srcdir'})) {
  $srcdir = File::Spec->catdir($ENV{'top_srcdir'}, 'tp');
} else {
  $srcdir = $command_directory;
}

my $libsrcdir = File::Spec->catdir($srcdir, 'maintain');


# we want a reliable way to switch locale, so we don't use the system
# gettext.
Locale::Messages->select_package('gettext_pp');

#my @search_locale_dirs = ("$datadir/locale", (map $_ . '/LocaleData', @INC),
#  qw (/usr/share/locale /usr/local/share/locale));
my @search_locale_dirs = ();

if (($command_suffix eq '.pl' and !(defined($ENV{'TEXINFO_DEV_SOURCE'}) 
     and $ENV{'TEXINFO_DEV_SOURCE'} eq 0)) or $ENV{'TEXINFO_DEV_SOURCE'}) {
  # in case of build from the source directory, out of source build, 
  # this helps to locate the locales.
  my $locales_dir_found = 0;
  @search_locale_dirs = (
    File::Spec->catdir($libsrcdir, $updir, 'LocaleData'),
    File::Spec->catdir($curdir, 'LocaleData'),
    File::Spec->catdir($updir, $updir, $updir, 'tp', 'LocaleData'),
    File::Spec->catdir($updir, $updir, 'tp', 'LocaleData'));
  foreach my $locales_dir (@search_locale_dirs) {
    if (-d $locales_dir) {
      Locale::Messages::bindtextdomain ($strings_textdomain, $locales_dir);
      # the messages in this domain are not regenerated automatically, 
      # only when calling ./maintain/regenerate_perl_module_files.sh
      Locale::Messages::bindtextdomain ($messages_textdomain, $locales_dir);
      $locales_dir_found = 1;
      last;
    }
  }
  if (!$locales_dir_found) {
    warn "Locales dir for document strings not found (@search_locale_dirs)\n";
  }
} else {
  Locale::Messages::bindtextdomain ($strings_textdomain, 
                                    File::Spec->catdir($datadir, 'locale'));
  Locale::Messages::bindtextdomain ($messages_textdomain,
                                    File::Spec->catdir($datadir, 'locale'));
}

#Locale::Messages::bindtextdomain ($messages_textdomain, 
#                                  File::Spec->catdir($datadir, 'locale'));


# Version setting is complicated, because we cope with 
# * script with configure values substituted or not
# * script shipped as part of texinfo or as a standalone perl module

# When shipped as a perl modules, $hardcoded_version is set to undef here
# by a sed one liner.  The consequence is that configure.ac is not used
# to retrieve the version number.
# Otherwise this is only used as a safety value, and should never be used 
# in practice as a regexp extracts the version from configure.ac.
my $hardcoded_version = "0.00-hardcoded";
# Version set in configure.ac
my $configured_version = '6.5';
if ($configured_version eq '@' . 'PACKAGE_VERSION@') {
  # if not configured, and $hardcoded_version is set search for the version 
  # in configure.ac
  if (defined($hardcoded_version)) {
    if (open (CONFIGURE, 
              "< ".File::Spec->catfile($srcdir, $updir, 'configure.ac'))) {
      while (<CONFIGURE>) {
        if (/^AC_INIT\(\[[^\]]+\]\s*,\s*\[([^\]]+)\]\s*,/) {
          $configured_version = "$1+dev"; # +dev to distinguish from installed
          last;
        }
      }
      close (CONFIGURE);
    }
    # This should never be used, but is a safety value
    $configured_version = $hardcoded_version if (!defined($configured_version));
  } else {
    # used in the standalone perl module, as $hardcoded_version is undef
    # and it should never be configured in that setup
    require Texinfo::Parser;
    $configured_version = $Texinfo::Parser::VERSION;
  }
}

# Compare the version of this file with the version of the modules
# it is using.  If they are different, don't go any further.  This
# can happen if multiple versions of texi2any are installed under a
# different names, e.g. with the --program-suffix option to 'configure'.
# The version in Common.pm is checked because that file has been present
# since Texinfo 5.0 (the first release with texi2any in Perl).
if ($configured_version ne $Texinfo::Common::VERSION
    and $configured_version ne $Texinfo::Common::VERSION."+dev") {
  warn "This is texi2any $configured_version but modules ".
       "for texi2any $Texinfo::Common::VERSION found!\n";
  die "Your installation of Texinfo is broken; aborting.\n";
}


my $configured_package = 'texinfo';
$configured_package = 'Texinfo' if ($configured_package eq '@' . 'PACKAGE@');
my $configured_name = 'GNU Texinfo';
$configured_name = $configured_package 
  if ($configured_name eq '@' .'PACKAGE_NAME@');
my $configured_name_version = "$configured_name $configured_version"; 
my $configured_url = 'http://www.gnu.org/software/texinfo/';
$configured_url = 'http://www.gnu.org/software/texinfo/'
  if ($configured_url eq '@' .'PACKAGE_URL@');

my $texinfo_dtd_version = '6.4';
# $hardcoded_version is undef for a standalone perl module
if ($texinfo_dtd_version eq '@' . 'TEXINFO_DTD_VERSION@') {
  $texinfo_dtd_version = undef;
  if (defined($hardcoded_version)) {
    if (open (CONFIGURE, 
            "< ".File::Spec->catfile($srcdir, $updir, 'configure.ac'))) {
      while (<CONFIGURE>) {
        if (/^TEXINFO_DTD_VERSION=([0-9]\S*)/) {
          $texinfo_dtd_version = "$1";
          last;
        }
      }
      close (CONFIGURE);
    }
  }
}
# Used in case it is not hardcoded in configure and for standalone perl module
$texinfo_dtd_version = $configured_version
  if (!defined($texinfo_dtd_version));

# defaults for options relevant in the main program, not undef, and also
# defaults for all the converters.
# Other relevant options (undef) are NO_WARN FORCE OUTFILE
# Others are set in the converters (SHOW_MENU).
my $converter_default_options = { 
    'ERROR_LIMIT' => 100,
    'TEXI2DVI' => 'texi2dvi',
    'PACKAGE_VERSION' => $configured_version,
    'PACKAGE' => $configured_package,
    'PACKAGE_NAME' => $configured_name,
    'PACKAGE_AND_VERSION' => $configured_name_version,
    'PACKAGE_URL' => $configured_url,
    'PROGRAM' => $real_command_name, 
    'TEXINFO_DTD_VERSION' => $texinfo_dtd_version,
};

# determine configuration directories.

my $conf_file_name = 'Config' ;
my $texinfo_htmlxref = 'htmlxref.cnf';

# directories for texinfo configuration files
my @language_config_dirs = File::Spec->catdir($curdir, '.texinfo');
push @language_config_dirs, File::Spec->catdir($ENV{'HOME'}, '.texinfo') 
                                if (defined($ENV{'HOME'}));
push @language_config_dirs, File::Spec->catdir($sysconfdir, 'texinfo') 
                               if (defined($sysconfdir));
push @language_config_dirs, File::Spec->catdir($datadir, 'texinfo') 
                               if (defined($datadir));
my @texinfo_config_dirs = ($curdir, @language_config_dirs);

my @program_config_dirs;
my @program_init_dirs;

my $program_name = 'texi2any';
@program_config_dirs = ($curdir, File::Spec->catdir($curdir, ".$program_name"));
push @program_config_dirs, File::Spec->catdir($ENV{'HOME'}, ".$program_name")
       if (defined($ENV{'HOME'}));
push @program_config_dirs, File::Spec->catdir($sysconfdir, $program_name) 
       if (defined($sysconfdir));
push @program_config_dirs, File::Spec->catdir($datadir, $program_name) 
  if (defined($datadir));

@program_init_dirs = @program_config_dirs;
foreach my $texinfo_config_dir (@language_config_dirs) {
  push @program_init_dirs, File::Spec->catdir($texinfo_config_dir, 'init');
}

# Namespace for configuration
{
package Texinfo::Config;

#use Carp;

# passed from main program
my $cmdline_options;
my $default_options;
# used in main program
our $options = {};

sub _load_config($$) {
  $default_options = shift;
  $cmdline_options = shift;
  #print STDERR "cmdline_options: ".join('|',keys(%$cmdline_options))."\n";
}

sub _load_init_file($) {
  my $file = shift;
  require Texinfo::Convert::HTML;
  eval { require($file) ;};
  my $e = $@;
  if ($e ne '') {
    main::document_warn(sprintf(main::__("error loading %s: %s\n"), 
                                 $file, $e));
  }
}

# FIXME: maybe use an opaque return status that can be used to retrieve
# an error message?
sub set_from_init_file($$) {
  my $var = shift;
  my $value = shift;
  if (!Texinfo::Common::valid_option($var)) {
    # carp may be better, but infortunately, it points to the routine that 
    # loads the file, and not to the init file.
    main::document_warn(sprintf(main::__("%s: unknown variable %s"), 
                                'set_from_init_file', $var));
    return 0;
  } elsif (Texinfo::Common::obsolete_option($var)) {
    main::document_warn(sprintf(main::__("%s: obsolete variable %s\n"), 
                                  'set_from_init_file', $var));
  }
  return 0 if (defined($cmdline_options->{$var}));
  delete $default_options->{$var};
  $options->{$var} = $value;
  return 1;
}

sub set_from_cmdline($$) {
  my $var = shift;
  my $value = shift;
  delete $options->{$var};
  delete $default_options->{$var};
  if (!Texinfo::Common::valid_option($var)) {
    main::document_warn(sprintf(main::__("%s: unknown variable %s\n"), 
                                'set_from_cmdline', $var));
    return 0;
  } elsif (Texinfo::Common::obsolete_option($var)) {
    main::document_warn(sprintf(main::__("obsolete variable %s\n"), 
                                'set_from_cmdline', $var));
  }
  $cmdline_options->{$var} = $value;
  return 1;
}

# This also could get and set some @-command results.
# FIXME But it does not take into account what happens during conversion,
# for that something like $converter->get_conf(...) has to be used.
sub get_conf($) {
  my $var = shift;
  if (exists($cmdline_options->{$var})) {
    return $cmdline_options->{$var};
  } elsif (exists($options->{$var})) {
    return $options->{$var};
  } elsif (exists($default_options->{$var})) {
    return $default_options->{$var};
  } else {
    return undef;
  }
}

}
# back in main program namespace

# file:        file name to locate. It can be a file path.
# directories: a reference on a array containing a list of directories to
#              search the file in. 
# all_files:   if true collect all the files with that name, otherwise stop
#              at first match.
sub locate_init_file($$$)
{
  my $file = shift;
  my $directories = shift;
  my $all_files = shift;

  if (File::Spec->file_name_is_absolute($file)) {
    return $file if (-e $file and -r $file);
  } else {
    my @files;
    foreach my $dir (@$directories) {
      next unless (-d $dir);
      my $possible_file = File::Spec->catfile($dir, $file);
      if ($all_files) {
        push (@files, $possible_file) 
          if (-e $possible_file and -r $possible_file);
      } else {
        return $possible_file if (-e $possible_file and -r $possible_file);
      }
    }
    return @files if ($all_files);
  }
  return undef;
}

sub locate_and_load_init_file($$)
{
  my $filename = shift;
  my $directories = shift;

  my $file = locate_init_file($filename, $directories, 0);
  if (defined($file)) {
    Texinfo::Config::_load_init_file($file);
  } else {
    document_warn(sprintf(__("could not read init file %s"), $filename));
  }
}

# read initialization files
foreach my $file (locate_init_file($conf_file_name, 
                  [ reverse(@program_config_dirs) ], 1)) {
  Texinfo::Config::_load_init_file($file);
}

sub set_from_cmdline($$) {
  return &Texinfo::Config::set_from_cmdline(@_);
}

sub set_from_init_file($$) {
  return &Texinfo::Config::set_from_init_file(@_);
}

sub get_conf($) {
  return &Texinfo::Config::get_conf(@_);
}

my @input_file_suffixes = ('.txi','.texinfo','.texi','.txinfo','');

my @texi2dvi_args = ();

my $format = 'info';
# this is the format associated with the output format, which is replaced
# when the output format changes.  It may also be removed if there is the
# corresponding --no-ifformat.
my $default_expanded_format = [ $format ];
my @conf_dirs = ();
my @include_dirs = ();
my @prepend_dirs = ();

# options for all the files
my $parser_default_options = {'expanded_formats' => [], 
                              'values' => {'txicommandconditionals' => 1},
                              'gettext' => \&__,
                              'pgettext' => \&__p,};

Texinfo::Config::_load_config($converter_default_options, $cmdline_options);

sub set_expansion($$) {
  my $region = shift;
  my $set = shift;
  $set = 1 if (!defined($set));
  if ($set) {
    push @{$parser_default_options->{'expanded_formats'}}, $region
      unless (grep {$_ eq $region} @{$parser_default_options->{'expanded_formats'}});
  } else {
    @{$parser_default_options->{'expanded_formats'}} = 
      grep {$_ ne $region} @{$parser_default_options->{'expanded_formats'}};
    @{$default_expanded_format} 
       = grep {$_ ne $region} @{$default_expanded_format};
  }
}

my $format_from_command_line = 0;

my %format_command_line_names = (
  'xml' => 'texinfoxml',
);

my %formats_table = (
 'info' => {
             'nodes_tree' => 1,
             'floats' => 1,
             'module' => 'Texinfo::Convert::Info'
           },
  'plaintext' => {
             'nodes_tree' => 1,
             'floats' => 1,
             'split' => 1,
             'module' => 'Texinfo::Convert::Plaintext'
           },
  'html' => {
             'nodes_tree' => 1,
             'floats' => 1,
             'split' => 1,
             'internal_links' => 1,
             'simple_menu' => 1,
             'move_index_entries_after_items' => 1,
             'no_warn_non_empty_parts' => 1,
             'module' => 'Texinfo::Convert::HTML'
           },
  'texinfoxml' => {
             'nodes_tree' => 1,
             'module' => 'Texinfo::Convert::TexinfoXML',
             'floats' => 1,
           },
  'texinfosxml' => {
             'nodes_tree' => 1,
             'module' => 'Texinfo::Convert::TexinfoSXML',
             'floats' => 1,
           },
  'ixinsxml' => {
             'nodes_tree' => 1,
             'module' => 'Texinfo::Convert::IXINSXML'
           },
  'docbook' => {
             'move_index_entries_after_items' => 1,
             'no_warn_non_empty_parts' => 1,
             'module' => 'Texinfo::Convert::DocBook'
           },
  'pdf' => {
             'texi2dvi_format' => 1,
           },
  'ps' =>  {
             'texi2dvi_format' => 1,
           },
  'dvi' => {
             'texi2dvi_format' => 1,
           },
  'dvipdf' => {
             'texi2dvi_format' => 1,
           },
  'debugtree' => {
          'split' => 1,
          'module' => 'DebugTexinfo::DebugTree'
         },
  'textcontent' => {
            'module' => 'Texinfo::Convert::TextContent'
           },
  'rawtext' => {
            'module' => 'Texinfo::Convert::Text'
           },
  'plaintexinfo' => {
            'module' => 'Texinfo::Convert::PlainTexinfo'
           },
  'parse' => {
           },
  'structure' => {
             'nodes_tree' => 1,
             'floats' => 1,
             'split' => 1,
           },
);

my $call_texi2dvi = 0;

# previous_format should be in argument if there is a possibility of error.
# as a fallback, the $format global variable is used.
sub set_format($;$$)
{
  my $set_format = shift;
  my $previous_format = shift;
  $previous_format = $format if (!defined($previous_format));
  my $do_not_override_command_line = shift;

  my $new_format;
  if ($format_command_line_names{$set_format}) {
    $new_format = $format_command_line_names{$set_format};
  } else {
    $new_format = $set_format;
  }
  my $expanded_format = $set_format;
  if (!$formats_table{$new_format}) {
    document_warn(sprintf(__("ignoring unrecognized TEXINFO_OUTPUT_FORMAT value `%s'\n"), 
                 $new_format));
    $new_format = $previous_format;
  } else {
    if ($format_from_command_line and $do_not_override_command_line) {
      $new_format = $previous_format;
    } else {
      if ($formats_table{$new_format}->{'texi2dvi_format'}) {
        $call_texi2dvi = 1;
        push @texi2dvi_args, '--'.$new_format; 
        $expanded_format = 'tex';
      }
      if ($Texinfo::Common::texinfo_output_formats{$expanded_format}) {
        if ($expanded_format eq 'plaintext') {
          $default_expanded_format = [$expanded_format, 'info'] 
        } else {
          $default_expanded_format = [$expanded_format] 
        }
      }
      $format_from_command_line = 1
        unless ($do_not_override_command_line);
    }
  }
  return $new_format;
}

sub set_global_format($)
{
  my $set_format = shift;
  $format = set_format($set_format);
}

sub document_warn($) {
  return if (get_conf('NO_WARN'));
  my $text = shift;
  chomp ($text);
  warn(sprintf(__p("program name: warning: warning_message", 
                   "%s: warning: %s\n"), $real_command_name,  $text));
}

sub _exit($$)
{
  my $error_count = shift;
  my $opened_files = shift;

  if ($error_count and $opened_files and !get_conf('FORCE')) {
    while (@$opened_files) {
      my $opened_file = shift (@$opened_files);
      unlink ($opened_file);
    }
  }
  exit (1) if ($error_count and (!get_conf('FORCE')
     or $error_count > get_conf('ERROR_LIMIT')));
}

sub handle_errors($$$)
{
  my $self = shift;
  my $error_count = shift;
  my $opened_files = shift;
  my ($errors, $new_error_count) = $self->errors();
  $error_count += $new_error_count if ($new_error_count);
  foreach my $error_message (@$errors) {
    warn $error_message->{'error_line'} if ($error_message->{'type'} eq 'error'
                                           or !get_conf('NO_WARN'));
  }
  
  _exit($error_count, $opened_files);
  return $error_count;
}


sub _get_converter_default($)
{
  my $option = shift;
  return $Texinfo::Convert::Converter::all_converters_defaults{$option}
   if (defined($Texinfo::Convert::Converter::all_converters_defaults{$option}));
  return undef;
}

sub makeinfo_help()
{
  my $makeinfo_help =
    sprintf(__("Usage: %s [OPTION]... TEXINFO-FILE...\n"),
    $real_command_name . $command_suffix)
."\n".
__("Translate Texinfo source documentation to various other formats, by default
Info files suitable for reading online with Emacs or standalone GNU Info.

This program is commonly installed as both `makeinfo' and `texi2any';
the behavior is identical, and does not depend on the installed name.\n")
."\n";
  $makeinfo_help .= sprintf(__("General options:
      --document-language=STR locale to use in translating Texinfo keywords
                                for the output document (default C).
      --error-limit=NUM       quit after NUM errors (default %d).
      --force                 preserve output even if errors.
      --help                  display this help and exit.
      --no-validate           suppress node cross-reference validation.
      --no-warn               suppress warnings (but not errors).
      --conf-dir=DIR          search also for initialization files in DIR.
      --init-file=FILE        load FILE to modify the default behavior.
  -c, --set-customization-variable VAR=VAL  set customization variable VAR 
                                to value VAL.
  -v, --verbose               explain what is being done.
      --version               display version information and exit.\n"),
    get_conf('ERROR_LIMIT'))
."\n";
  $makeinfo_help .= __("Output format selection (default is to produce Info):
      --docbook               output Docbook XML rather than Info.
      --html                  output HTML rather than Info.
      --plaintext             output plain text rather than Info.
      --xml                   output Texinfo XML rather than Info.
      --dvi, --dvipdf, --ps, --pdf  call texi2dvi to generate given output,
                                after checking validity of TEXINFO-FILE.\n")
."\n";
  $makeinfo_help .= __("General output options:
  -E, --macro-expand=FILE     output macro-expanded source to FILE,
                                ignoring any \@setfilename.
      --no-headers            suppress node separators, Node: lines, and menus
                                from Info output (thus producing plain text)
                                or from HTML (thus producing shorter output).
                                Also, if producing Info, write to
                                standard output by default.
      --no-split              suppress any splitting of the output;
                                generate only one output file.
      --[no-]number-sections  output chapter and sectioning numbers;
                                default is on.
  -o, --output=DEST           output to DEST.
                                With split output, create DEST as a directory
                                 and put the output files there.
                                With non-split output, if DEST is already
                                 a directory or ends with a /,
                                 put the output file there.
                                Otherwise, DEST names the output file.\n")
."\n";
  $makeinfo_help .= sprintf(__("Options for Info and plain text:
      --disable-encoding      do not output accented and special characters
                                in Info output based on \@documentencoding.
      --enable-encoding       override --disable-encoding (default).
      --fill-column=NUM       break Info lines at NUM characters (default %d).
      --footnote-style=STYLE  output footnotes in Info according to STYLE:
                                `separate' to put them in their own node;
                                `end' to put them at the end of the node, in
                                which they are defined (this is the default).
      --paragraph-indent=VAL  indent Info paragraphs by VAL spaces (default %d).
                                If VAL is `none', do not indent; if VAL is
                                `asis', preserve existing indentation.
      --split-size=NUM        split Info files at size NUM (default %d).\n"),
    _get_converter_default('fillcolumn'), 
    _get_converter_default('paragraphindent'), 
    _get_converter_default('SPLIT_SIZE'))
."\n";
  $makeinfo_help .= __("Options for HTML:
      --css-include=FILE      include FILE in HTML <style> output;
                                read stdin if FILE is -.
      --css-ref=URL           generate CSS reference to URL.
      --internal-links=FILE   produce list of internal links in FILE.
      --split=SPLIT           split at SPLIT, where SPLIT may be `chapter',
                                `section' or `node'.
      --transliterate-file-names  use file names in ASCII transliteration.
      --node-files            produce redirection files for nodes and 
                                anchors; default is set only if split.\n")
."\n";
  $makeinfo_help .= __("Options for XML and Docbook:
      --output-indent=VAL     does nothing, retained for compatibility.\n")
."\n";
  $makeinfo_help .= __("Options for DVI/PS/PDF:
      --Xopt=OPT              pass OPT to texi2dvi; can be repeated.\n")
."\n";
  $makeinfo_help .= __("Input file options:
      --commands-in-node-names  does nothing, retained for compatibility.
  -D VAR                        define the variable VAR, as with \@set.
  -D 'VAR VAL'                  define VAR to VAL (one shell argument).
  -I DIR                        append DIR to the \@include search path.
  -P DIR                        prepend DIR to the \@include search path.
  -U VAR                        undefine the variable VAR, as with \@clear.\n")
."\n";
  $makeinfo_help .= __("Conditional processing in input:
  --ifdocbook       process \@ifdocbook and \@docbook even if
                      not generating Docbook.
  --ifhtml          process \@ifhtml and \@html even if not generating HTML.
  --ifinfo          process \@ifinfo even if not generating Info.
  --ifplaintext     process \@ifplaintext even if not generating plain text.
  --iftex           process \@iftex and \@tex.
  --ifxml           process \@ifxml and \@xml.
  --no-ifdocbook    do not process \@ifdocbook and \@docbook text.
  --no-ifhtml       do not process \@ifhtml and \@html text.
  --no-ifinfo       do not process \@ifinfo text.
  --no-ifplaintext  do not process \@ifplaintext text.
  --no-iftex        do not process \@iftex and \@tex text.
  --no-ifxml        do not process \@ifxml and \@xml text.

  Also, for the --no-ifFORMAT options, do process \@ifnotFORMAT text.\n")
."\n";
  $makeinfo_help .= __("  The defaults for the \@if... conditionals depend on the output format:
  if generating Docbook, --ifdocbook is on and the others are off;
  if generating HTML, --ifhtml is on and the others are off;
  if generating Info, --ifinfo is on and the others are off;
  if generating plain text, --ifplaintext is on and the others are off;
  if generating XML, --ifxml is on and the others are off.\n")
."\n";
  $makeinfo_help .= __("Examples:
  makeinfo foo.texi                      write Info to foo's \@setfilename
  makeinfo --html foo.texi               write HTML to \@setfilename
  makeinfo --xml foo.texi                write Texinfo XML to \@setfilename
  makeinfo --docbook foo.texi            write Docbook XML to \@setfilename
  makeinfo --plaintext foo.texi          write plain text to standard output
  makeinfo --pdf foo.texi                write PDF using texi2dvi

  makeinfo --html --no-headers foo.texi  write html without node lines, menus
  makeinfo --number-sections foo.texi    write Info with numbered sections
  makeinfo --no-split foo.texi           write one Info file however big\n")
."\n";
  $makeinfo_help .= __("Email bug reports to bug-texinfo\@gnu.org,
general questions and discussion to help-texinfo\@gnu.org.
Texinfo home page: http://www.gnu.org/software/texinfo/") ."\n";
  return $makeinfo_help;
}

my $Xopt_arg_nr = 0;
my $latex2html_file = 'latex2html.pm';

my $result_options = Getopt::Long::GetOptions (
 'help|h' => sub { print makeinfo_help(); exit 0; },
 'version|V' => sub {print "$program_name (GNU texinfo) $configured_version\n\n";
    printf __("Copyright (C) %s Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.\n"), "2017";
      exit 0;},
 'macro-expand|E=s' => sub { set_from_cmdline('MACRO_EXPAND', $_[1]); },
 'ifhtml!' => sub { set_expansion('html', $_[1]); },
 'ifinfo!' => sub { set_expansion('info', $_[1]); },
 'ifxml!' => sub { set_expansion('xml', $_[1]); },
 'ifdocbook!' => sub { set_expansion('docbook', $_[1]); },
 'iftex!' => sub { set_expansion('tex', $_[1]); },
 'ifplaintext!' => sub { set_expansion('plaintext', $_[1]); },
 'I=s' => sub { push @texi2dvi_args, ('-'.$_[0], $_[1]);
                push @include_dirs, split(/$quoted_path_separator/, $_[1]); },
 'conf-dir=s' => sub { push @conf_dirs, split(/$quoted_path_separator/, $_[1]); },
 'P=s' => sub { unshift @prepend_dirs, split(/$quoted_path_separator/, $_[1]); },
 'number-sections!' => sub { set_from_cmdline('NUMBER_SECTIONS', $_[1]); },
 'number-footnotes!' => sub { set_from_cmdline('NUMBER_FOOTNOTES', $_[1]); },
 'node-files!' => sub { set_from_cmdline('NODE_FILES', $_[1]); },
 'footnote-style=s' => sub {
    if ($_[1] eq 'end' or $_[1] eq 'separate') {
       set_from_cmdline('footnotestyle', $_[1]);
    } else {
      die sprintf(__("%s: --footnote-style arg must be `separate' or `end', not `%s'.\n"), $real_command_name, $_[1]);
    }
  },
 'split=s' => sub {  my $split = $_[1];
                     my @messages 
                       = Texinfo::Common::warn_unknown_split($_[1], \&__);
                     if (@messages) {
                       foreach my $message (@messages) {
                         document_warn($message);
                       }
                       $split = 'node';
                     }
                     set_from_cmdline('SPLIT', $split); },
 'no-split' => sub { set_from_cmdline('SPLIT', ''); 
                     set_from_cmdline('SPLIT_SIZE', undef);},
 'headers!' => sub { set_from_cmdline('HEADERS', $_[1]);
                     set_from_cmdline('SHOW_MENU', $_[1]);
                     $format = 'plaintext' if (!$_[1] and $format eq 'info'); },
 'output|out|o=s' => sub {
    my $var = 'OUTFILE';
    if ($_[1] =~ m:/$: or -d $_[1]) {
      set_from_cmdline($var, undef);
      $var = 'SUBDIR';
    }
    set_from_cmdline($var, $_[1]);
    set_from_cmdline('OUT', $_[1]);
    push @texi2dvi_args, '-o', $_[1];
  },
 'no-validate|no-pointer-validate' => sub {
      set_from_cmdline('novalidate',$_[1]);
      $parser_default_options->{'info'}->{'novalidate'} = $_[1];
    },
 'no-warn' => sub { set_from_cmdline('NO_WARN', $_[1]); },
 'verbose|v!' => sub {set_from_cmdline('VERBOSE', $_[1]); 
                     push @texi2dvi_args, '--verbose'; },
 'document-language=s' => sub {
                      set_from_cmdline('documentlanguage', $_[1]); 
                      $parser_default_options->{'documentlanguage'} = $_[1];
                      my @messages 
                       = Texinfo::Common::warn_unknown_language($_[1], \&__);
                      foreach my $message (@messages) {
                        document_warn($message);
                      }
                    },
 'D=s' => sub {
    my $var = $_[1];
    my @field = split (/\s+/, $var, 2);
    if (@field == 1) {
      $parser_default_options->{'values'}->{$var} = 1;
    } else {
      $parser_default_options->{'values'}->{$field[0]} = $field[1];
    }
 },
 'U=s' => sub {delete $parser_default_options->{'values'}->{$_[1]};},
 'init-file=s' => sub {
    locate_and_load_init_file($_[1], [ @conf_dirs, @program_init_dirs ]);
 },
 'set-customization-variable|c=s' => sub {
   my $var_val = $_[1];
   if ($var_val =~ s/^(\w+)\s*=?\s*//) {
     my $var = $1;
     my $value = $var_val;
     if ($value =~ /^undef$/i) {
       $value = undef;
     }
     # special format
     if ($var eq 'TEXINFO_OUTPUT_FORMAT') {
       $format = set_format($value, $format, 1);
     } elsif ($var eq 'TEXI2HTML') {
       $format = set_format('html');
       $parser_default_options->{'values'}->{'texi2html'} = 1;
     }
     set_from_cmdline($var, $value);
     # FIXME do that here or when all command line options are processed?
     if ($var eq 'L2H' and get_conf('L2H')) {
       locate_and_load_init_file($latex2html_file, 
                             [ @conf_dirs, @program_init_dirs ]);
     }
   }
 },
 'css-include=s' => \@css_files,
 'css-ref=s' => \@css_refs,
 'transliterate-file-names!' => 
     sub {set_from_cmdline('TRANSLITERATE_FILE_NAMES', $_[1]);},
 'error-limit|e=i' => sub { set_from_cmdline('ERROR_LIMIT', $_[1]); },
 'split-size=s' => sub {set_from_cmdline('SPLIT_SIZE', $_[1])},
 'paragraph-indent|p=s' => sub {
    my $value = $_[1];
    if ($value =~ /^([0-9]+)$/ or $value eq 'none' or $value eq 'asis') {
      set_from_cmdline('paragraphindent', $_[1]);
    } else {
      die sprintf(__("%s: --paragraph-indent arg must be numeric/`none'/`asis', not `%s'.\n"), 
                  $real_command_name, $value);
    }
 },
 'fill-column|f=i' => sub {set_from_cmdline('FILLCOLUMN',$_[1]);},
 'enable-encoding' => sub {set_from_cmdline('ENABLE_ENCODING',$_[1]);
                     $parser_default_options->{'ENABLE_ENCODING'} = $_[1];},
 'disable-encoding' => sub {set_from_cmdline('ENABLE_ENCODING', 0);
                     $parser_default_options->{'ENABLE_ENCODING'} = 0;},
 'internal-links=s' => sub {set_from_cmdline('INTERNAL_LINKS', $_[1]);},
 'force|F' => sub {set_from_cmdline('FORCE', $_[1]);},
 'commands-in-node-names' => sub { ;},
 'output-indent=i' => sub { ;},
 'reference-limit=i' => sub { ;},
 'Xopt=s' => sub {push @texi2dvi_args, $_[1]; $Xopt_arg_nr++},
 'silent|quiet' => sub {set_from_cmdline('SILENT', $_[1]);
                         push @texi2dvi_args, '--'.$_[0];},
   
 'plaintext' => sub {$format = set_format($_[0].'');},
 'html' => sub {$format = set_format($_[0].'');},
 'info' => sub {$format = set_format($_[0].'');},
 'docbook' => sub {$format = set_format($_[0].'');},
 'xml' => sub {$format = set_format($_[0].'');},
 'dvi' => sub {$format = set_format($_[0].'');},
 'dvipdf' => sub {$format = set_format($_[0].'');},
 'ps' => sub {$format = set_format($_[0].'');},
 'pdf' => sub {$format = set_format($_[0].'');},
 'debug=i' => sub {set_from_cmdline('DEBUG', $_[1]); 
                   $parser_default_options->{'DEBUG'} = $_[1];
                   push @texi2dvi_args, '--'.$_[0]; },
);

exit 1 if (!$result_options);

# For tests, set some strings to values not changing with releases
my %test_conf = (
    'PACKAGE_VERSION' => '',
    'PACKAGE' => 'texinfo',
    'PACKAGE_NAME' => 'texinfo',
    'PACKAGE_AND_VERSION' => 'texinfo',
    'PACKAGE_URL' => 'http://www.gnu.org/software/texinfo/',
# maybe don't set this?
    'PROGRAM' => 'texi2any', 
);
if (get_conf('TEST')) {
  foreach my $conf (keys (%test_conf)) {
    $converter_default_options->{$conf} = $test_conf{$conf};
  }
}


my %format_names = (
 'info' => 'Info',
 'html' => 'HTML',
 'docbook' => 'DocBook',
 'texinfoxml' => 'Texinfo XML',
 'plaintext' => 'Plain Text',
);

sub format_name($)
{
  my $format = shift;
  if ($format_names{$format}) {
    return $format_names{$format};
  } else {
    return $format;
  }
}


if (defined($ENV{'TEXINFO_OUTPUT_FORMAT'}) 
    and $ENV{'TEXINFO_OUTPUT_FORMAT'} ne '') {
  $format = set_format($ENV{'TEXINFO_OUTPUT_FORMAT'}, $format, 1);
}

if ($call_texi2dvi) {
  if (defined(get_conf('OUT')) and @ARGV > 1) {
    die sprintf(__('%s: when generating %s, only one input FILE may be specified with -o'."\n"),
                $real_command_name, format_name($format));
  }
} elsif($Xopt_arg_nr) {
  document_warn(__('--Xopt option without printed output')); 
}

require Texinfo::Parser;
require Texinfo::Structuring;
require Texinfo::Transformations;
# Avoid loading these modules until down here to speed up the case
# when they are not needed.

my %tree_transformations;
if (get_conf('TREE_TRANSFORMATIONS')) {
  my @transformations = split /,/, get_conf('TREE_TRANSFORMATIONS');
  foreach my $transformation (@transformations) {
    if (Texinfo::Common::valid_tree_transformation($transformation)) {
      $tree_transformations{$transformation} = 1;
    } else {
      document_warn(sprintf(__('unknown tree transformation %s'), 
                     $transformation));
    }
  }
}

if (get_conf('SPLIT') and !$formats_table{$format}->{'split'}) {
  document_warn(sprintf(__('ignoring splitting for format %s'), 
                        format_name($format)));
  set_from_cmdline('SPLIT', ''); 
}

foreach my $expanded_format (@{$default_expanded_format}) {
  push @{$parser_default_options->{'expanded_formats'}}, $expanded_format 
    unless (grep {$_ eq $expanded_format} @{$parser_default_options->{'expanded_formats'}});
}

my $converter_class;
my %converter_defaults;

if (defined($formats_table{$format}->{'module'})) {
  # Speed up initialization by only loading the module we need.
  eval "require $formats_table{$format}->{'module'};"
      or die "$@";
  eval '$formats_table{$format}->{\'converter\'} = sub{'.
                $formats_table{$format}->{'module'}
        .'->converter(@_)};';
}

# This gets the class right, even though there is a sub...
if (defined($formats_table{$format}->{'converter'})) {
  $converter_class = ref(&{$formats_table{$format}->{'converter'}});
  %converter_defaults = $converter_class->converter_defaults();
}

# FIXME should this be set when the --set is set too?  The corresponding
# code is ready above, but commented out.
# using no warnings is wrong, but a way to avoid a spurious warning.
no warnings 'once';
foreach my $parser_settable_option (
                keys(%Texinfo::Parser::default_customization_values)) {
  if (defined(get_conf($parser_settable_option))) {
    $parser_default_options->{$parser_settable_option} 
       = get_conf($parser_settable_option);
  } elsif (defined($converter_class) 
           and defined($converter_defaults{$parser_settable_option})) {
    $parser_default_options->{$parser_settable_option} 
       = $converter_defaults{$parser_settable_option};
  }
}

## using no warnings is wrong, but a way to avoid a spurious warning.
#no warnings 'once';
# The configuration options are upper-cased when considered as 
# customization variables, and lower-cased when passed to the Parser
foreach my $parser_option (map {uc($_)} 
                  (keys (%Texinfo::Common::default_parser_state_configuration))) {
  $parser_default_options->{lc($parser_option)} = get_conf($parser_option)
    if (defined(get_conf($parser_option)));
}


# Main processing, process all the files given on the command line

my @input_files = @ARGV;
# use STDIN if not a tty, like makeinfo does
@input_files = ('-') if (!scalar(@input_files) and !-t STDIN);
die sprintf(__("%s: missing file argument.\n"), $real_command_name) 
   .sprintf(__("Try `%s --help' for more information.\n"), $real_command_name)
     unless (scalar(@input_files) >= 1);

my $file_number = -1;
my @opened_files = ();
my %unclosed_files;
my $error_count = 0;
# main processing
while(@input_files) {
  $file_number++;
  my $input_file_arg = shift(@input_files);
  my $input_file_name;
  # try to concatenate with different suffixes. The last suffix is ''
  # such that the plain file name is checked.
  foreach my $suffix (@input_file_suffixes) {
    if (-e $input_file_arg.$suffix) {
      $input_file_name = $input_file_arg.$suffix;
      last;
    }
  }
  # in case no file was found, still set the file name
  $input_file_name = $input_file_arg if (!defined($input_file_name));

  my ($input_filename, $input_directory, $suffix) = fileparse($input_file_name);
  if (!defined($input_directory) or $input_directory eq '') {
    $input_directory = $curdir;
  }

  my $input_file_base = $input_file_name;
  $input_file_base =~ s/\.te?x(i|info)?$//;

  my @htmlxref_dirs;
  if (get_conf('TEST')) {
    # to have reproducible tests, do not use system or user
    # directories if TEST is set.
    @htmlxref_dirs = File::Spec->catdir($curdir, '.texinfo');
  } else {
    @htmlxref_dirs = @language_config_dirs;
  }
  if ($input_directory ne '.' and $input_directory ne '') {
    unshift @htmlxref_dirs, $input_directory;
  }
  unshift @htmlxref_dirs, '.';

  my @texinfo_htmlxref_files;
  my $init_file_from_conf = get_conf('HTMLXREF');
  if ($init_file_from_conf) {
    @texinfo_htmlxref_files = ( $init_file_from_conf );
  } else {
    @texinfo_htmlxref_files 
      = locate_init_file ($texinfo_htmlxref, \@htmlxref_dirs, 1);
  }

  my $parser_options = { %$parser_default_options };

  $parser_options->{'include_directories'} = [@include_dirs];
  my @prependended_include_directories = ('.');
  push @prependended_include_directories, $input_directory
      if ($input_directory ne '.');
  unshift @{$parser_options->{'include_directories'}},
     @prependended_include_directories;
  unshift @{$parser_options->{'include_directories'}}, @prepend_dirs;

  my $parser = Texinfo::Parser::parser($parser_options);
  my $tree = $parser->parse_texi_file($input_file_name);

  #my $global_commands = $parser->global_commands_information();
  #print STDERR join('|', keys(%$global_commands))."\n";

  if (defined($tree)
      and (defined(get_conf('DUMP_TREE')) 
           or (get_conf('DEBUG') and get_conf('DEBUG') >= 10))) {
    # this is very wrong, but a way to avoid a spurious warning.
    no warnings 'once';
    local $Data::Dumper::Purity = 1;
    no warnings 'once';
    local $Data::Dumper::Indent = 1;
    print STDERR Data::Dumper->Dump([$tree]);
  }
  if (!defined($tree) or $format eq 'parse') {
    handle_errors($parser, $error_count, \@opened_files);
    next;
  }


  if ($tree_transformations{'fill_gaps_in_sectioning'}) {
    my ($filled_contents, $added_sections) 
      = Texinfo::Transformations::fill_gaps_in_sectioning($tree);
    if (!defined($filled_contents)) {
      document_warn(__("fill_gaps_in_sectioning transformation return no result. No section?"));
    } else {
      $tree->{'contents'} = $filled_contents;
    }
  }
  if ((get_conf('SIMPLE_MENU')
       and $formats_table{$format}->{'simple_menu'})
      or $tree_transformations{'simple_menus'}) {
    $parser->Texinfo::Transformations::set_menus_to_simple_menu();
  }

  if (defined(get_conf('MACRO_EXPAND')) and $file_number == 0) {
    require Texinfo::Convert::Texinfo;
    my $texinfo_text = Texinfo::Convert::Texinfo::convert($tree, 1);
    #print STDERR "$texinfo_text\n";
    my $macro_expand_file = get_conf('MACRO_EXPAND');
    my $macro_expand_fh = Texinfo::Common::open_out($parser, 
                        $macro_expand_file, $parser->{'INPUT_PERL_ENCODING'});

    my $error_macro_expand_file;
    if (defined($macro_expand_fh)) {
      print $macro_expand_fh $texinfo_text;
      if (!close($macro_expand_fh)) {
        document_warn(sprintf(__("error on closing macro expand file %s: %s\n"), 
                              $macro_expand_file, $!));
        $error_macro_expand_file = 1;
      }
      $parser->Texinfo::Convert::Converter::register_close_file($macro_expand_file);
    } else {
      document_warn(sprintf(__("could not open %s for writing: %s\n"), 
                            $macro_expand_file, $!));
      $error_macro_expand_file = 1;
    }

    if ($error_macro_expand_file) {
      $error_count++;
      _exit($error_count, \@opened_files);
    }
  }
  if (get_conf('DUMP_TEXI') or $formats_table{$format}->{'texi2dvi_format'}) {
    handle_errors($parser, $error_count, \@opened_files);
    next;
  }

  if ($formats_table{$format}->{'move_index_entries_after_items'}
      or $tree_transformations{'move_index_entries_after_items'}) {
    Texinfo::Common::move_index_entries_after_items_in_tree($tree);
  }

  if ($tree_transformations{'insert_nodes_for_sectioning_commands'}) {
    my ($modified_contents, $added_nodes)
     = Texinfo::Transformations::insert_nodes_for_sectioning_commands($parser, $tree);
    if (!defined($modified_contents)) {
      document_warn(__(
       "insert_nodes_for_sectioning_commands transformation return no result. No section?"));
    } else {
      $tree->{'contents'} = $modified_contents;
    }
  }

  Texinfo::Structuring::associate_internal_references($parser);
  # every format needs the sectioning structure

  my $structure = Texinfo::Structuring::sectioning_structure($parser, $tree);

  if ($structure
      and !$formats_table{$format}->{'no_warn_non_empty_parts'}) {
    Texinfo::Structuring::warn_non_empty_parts($parser);
  }

  if ($tree_transformations{'complete_tree_nodes_menus'}) {
    Texinfo::Transformations::complete_tree_nodes_menus($parser, $tree);
  }

  if ($tree_transformations{'regenerate_master_menu'}) {
    Texinfo::Transformations::regenerate_master_menu($parser);
  }

  # this can be done for every format, since information is already gathered
  my $floats = $parser->floats_information();

  my $top_node;
  if ($formats_table{$format}->{'nodes_tree'}) {
    $top_node = Texinfo::Structuring::nodes_tree($parser);
  }
  if ($formats_table{$format}->{'floats'}) {
    Texinfo::Structuring::number_floats($floats);
  }

  $error_count = handle_errors($parser, $error_count, \@opened_files);

  if ($format eq 'structure') {
    next;
  }

  if ($file_number != 0) {
    delete $cmdline_options->{'OUTFILE'} if exists($cmdline_options->{'OUTFILE'});
    delete $cmdline_options->{'OUT'} if exists($cmdline_options->{'OUT'});
    delete $cmdline_options->{'PREFIX'} if exists($cmdline_options->{'PREFIX'});
    delete $cmdline_options->{'SUBDIR'} 
      if (exists($cmdline_options->{'SUBDIR'}) and get_conf('SPLIT'));
  }
  my $converter_options = { %$converter_default_options, 
                            %$cmdline_options,
                            %$Texinfo::Config::options };

  $converter_options->{'parser'} = $parser;
  $converter_options->{'output_format'} = $format;
  $converter_options->{'htmlxref_files'} = \@texinfo_htmlxref_files;
  my $converter = &{$formats_table{$format}->{'converter'}}($converter_options);
  $converter->output($tree);
  push @opened_files, $converter->converter_opened_files();
  handle_errors($converter, $error_count, \@opened_files);
  my $converter_unclosed_files = $converter->converter_unclosed_files();
  if ($converter_unclosed_files) {
    foreach my $unclosed_file (keys(%$converter_unclosed_files)) {
      if ($unclosed_file eq '-') {
        $unclosed_files{$unclosed_file} 
          = $converter_unclosed_files->{$unclosed_file};
      } else {
        if (!close($converter_unclosed_files->{$unclosed_file})) {
          warn(sprintf(__("%s: error on closing %s: %s\n"), 
                           $real_command_name, $unclosed_file, $!));
          $error_count++;
          _exit($error_count, \@opened_files);
        }
      }
    }
  }
  
  if (defined(get_conf('INTERNAL_LINKS')) and $file_number == 0
      and $formats_table{$format}->{'internal_links'}) {
    my $internal_links_text 
      = $converter->output_internal_links();
    # always create a file, even if empty.
    $internal_links_text = '' if (!defined($internal_links_text));
    my $internal_links_file = get_conf('INTERNAL_LINKS');
    my $internal_links_fh = Texinfo::Common::open_out($converter, 
                                             $internal_links_file);
    my $error_internal_links_file;
    if (defined ($internal_links_fh)) {
      print $internal_links_fh $internal_links_text;
      
      if (!close ($internal_links_fh)) {
        warn(sprintf(__("%s: error on closing internal links file %s: %s\n"), 
                      $real_command_name, $internal_links_file, $!));
        $error_internal_links_file = 1;
      }
      $converter->register_close_file($internal_links_file);
    } else {
      warn(sprintf(__("%s: could not open %s for writing: %s\n"), 
                      $real_command_name, $internal_links_file, $!));
      $error_internal_links_file = 1;
    }
    if ($error_internal_links_file) {
      $error_count++;
      _exit($error_count, \@opened_files);
    }
  }
  if (defined(get_conf('SORT_ELEMENT_COUNT')) and $file_number == 0) {
    my $converter_element_count_file 
      = Texinfo::Convert::TextContent->converter($converter_options);
    my $use_sections = (! $formats_table{$format}->{'nodes_tree'}
                        or (defined($converter->get_conf('USE_NODES'))
                            and !$converter->get_conf('USE_NODES')));
    my ($sorted_name_counts_array, $sort_element_count_text)
        = Texinfo::Convert::Converter::sort_element_counts(
               $converter_element_count_file, $tree, $use_sections,
                             get_conf('SORT_ELEMENT_COUNT_WORDS'));

    my $sort_element_count_file = get_conf('SORT_ELEMENT_COUNT'); 
    my $sort_element_count_fh = Texinfo::Common::open_out($converter, 
                                             $sort_element_count_file);
    my $error_sort_element_count_file;
    if (defined ($sort_element_count_fh)) {
      print $sort_element_count_fh $sort_element_count_text;
      
      if (!close ($sort_element_count_fh)) {
        warn(sprintf(__("%s: error on closing internal links file %s: %s\n"), 
                      $real_command_name, $sort_element_count_file, $!));
        $error_sort_element_count_file = 1;
      }
      $converter->register_close_file($sort_element_count_file);
    } else {
      warn(sprintf(__("%s: could not open %s for writing: %s\n"), 
                    $real_command_name, $sort_element_count_file, $!));
      $error_sort_element_count_file = 1;
    }
    if ($error_sort_element_count_file) {
      $error_count++;
      _exit($error_count, \@opened_files);
    }
  }
}

foreach my $unclosed_file (keys(%unclosed_files)) {
  if (!close($unclosed_files{$unclosed_file})) {
    warn(sprintf(__("%s: error on closing %s: %s\n"), 
                     $real_command_name, $unclosed_file, $!));
    $error_count++;
    _exit($error_count, \@opened_files);
  }
}

if ($call_texi2dvi) {
  if (get_conf('DEBUG') or get_conf('VERBOSE')) {
    print STDERR "EXEC ".join('|', (get_conf('TEXI2DVI'), @texi2dvi_args, @ARGV)) 
       ."\n";
  }
  exec { get_conf('TEXI2DVI') } (get_conf('TEXI2DVI'), @texi2dvi_args, @ARGV);
}

1;