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   4 <title>POSIX Symbolic Names</title>
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  26 <div class="titlepage"><div><div><h4 class="title">
  27 <a name="boost_regex.syntax.collating_names.posix_symbolic_names"></a><a class="link" href="posix_symbolic_names.html" title="POSIX Symbolic Names">POSIX
  28         Symbolic Names</a>
  29 </h4></div></div></div>
  30 <p>
  31           The following symbolic names are recognised as valid collating element
  32           names, in addition to any single character, this allows you to write for
  33           example:
  34         </p>
  35 <pre class="programlisting">[[.left-square-bracket.][.right-square-bracket.]]</pre>
  36 <p>
  37           if you wanted to match either "[" or "]".
  38         </p>
  39 <div class="informaltable"><table class="table">
  40 <colgroup>
  41 <col>
  42 <col>
  43 </colgroup>
  44 <thead><tr>
  45 <th>
  46                   <p>
  47                     Name
  48                   </p>
  49                 </th>
  50 <th>
  51                   <p>
  52                     Character
  53                   </p>
  54                 </th>
  55 </tr></thead>
  56 <tbody>
  57 <tr>
  58 <td>
  59                   <p>
  60                     NUL
  61                   </p>
  62                 </td>
  63 <td>
  64                   <p>
  65                     \x00
  66                   </p>
  67                 </td>
  68 </tr>
  69 <tr>
  70 <td>
  71                   <p>
  72                     SOH
  73                   </p>
  74                 </td>
  75 <td>
  76                   <p>
  77                     \x01
  78                   </p>
  79                 </td>
  80 </tr>
  81 <tr>
  82 <td>
  83                   <p>
  84                     STX
  85                   </p>
  86                 </td>
  87 <td>
  88                   <p>
  89                     \x02
  90                   </p>
  91                 </td>
  92 </tr>
  93 <tr>
  94 <td>
  95                   <p>
  96                     ETX
  97                   </p>
  98                 </td>
  99 <td>
 100                   <p>
 101                     \x03
 102                   </p>
 103                 </td>
 104 </tr>
 105 <tr>
 106 <td>
 107                   <p>
 108                     EOT
 109                   </p>
 110                 </td>
 111 <td>
 112                   <p>
 113                     \x04
 114                   </p>
 115                 </td>
 116 </tr>
 117 <tr>
 118 <td>
 119                   <p>
 120                     ENQ
 121                   </p>
 122                 </td>
 123 <td>
 124                   <p>
 125                     \x05
 126                   </p>
 127                 </td>
 128 </tr>
 129 <tr>
 130 <td>
 131                   <p>
 132                     ACK
 133                   </p>
 134                 </td>
 135 <td>
 136                   <p>
 137                     \x06
 138                   </p>
 139                 </td>
 140 </tr>
 141 <tr>
 142 <td>
 143                   <p>
 144                     alert
 145                   </p>
 146                 </td>
 147 <td>
 148                   <p>
 149                     \x07
 150                   </p>
 151                 </td>
 152 </tr>
 153 <tr>
 154 <td>
 155                   <p>
 156                     backspace
 157                   </p>
 158                 </td>
 159 <td>
 160                   <p>
 161                     \x08
 162                   </p>
 163                 </td>
 164 </tr>
 165 <tr>
 166 <td>
 167                   <p>
 168                     tab
 169                   </p>
 170                 </td>
 171 <td>
 172                   <p>
 173                     \t
 174                   </p>
 175                 </td>
 176 </tr>
 177 <tr>
 178 <td>
 179                   <p>
 180                     newline
 181                   </p>
 182                 </td>
 183 <td>
 184                   <p>
 185                     \n
 186                   </p>
 187                 </td>
 188 </tr>
 189 <tr>
 190 <td>
 191                   <p>
 192                     vertical-tab
 193                   </p>
 194                 </td>
 195 <td>
 196                   <p>
 197                     \v
 198                   </p>
 199                 </td>
 200 </tr>
 201 <tr>
 202 <td>
 203                   <p>
 204                     form-feed
 205                   </p>
 206                 </td>
 207 <td>
 208                   <p>
 209                     \f
 210                   </p>
 211                 </td>
 212 </tr>
 213 <tr>
 214 <td>
 215                   <p>
 216                     carriage-return
 217                   </p>
 218                 </td>
 219 <td>
 220                   <p>
 221                     \r
 222                   </p>
 223                 </td>
 224 </tr>
 225 <tr>
 226 <td>
 227                   <p>
 228                     SO
 229                   </p>
 230                 </td>
 231 <td>
 232                   <p>
 233                     \xE
 234                   </p>
 235                 </td>
 236 </tr>
 237 <tr>
 238 <td>
 239                   <p>
 240                     SI
 241                   </p>
 242                 </td>
 243 <td>
 244                   <p>
 245                     \xF
 246                   </p>
 247                 </td>
 248 </tr>
 249 <tr>
 250 <td>
 251                   <p>
 252                     DLE
 253                   </p>
 254                 </td>
 255 <td>
 256                   <p>
 257                     \x10
 258                   </p>
 259                 </td>
 260 </tr>
 261 <tr>
 262 <td>
 263                   <p>
 264                     DC1
 265                   </p>
 266                 </td>
 267 <td>
 268                   <p>
 269                     \x11
 270                   </p>
 271                 </td>
 272 </tr>
 273 <tr>
 274 <td>
 275                   <p>
 276                     DC2
 277                   </p>
 278                 </td>
 279 <td>
 280                   <p>
 281                     \x12
 282                   </p>
 283                 </td>
 284 </tr>
 285 <tr>
 286 <td>
 287                   <p>
 288                     DC3
 289                   </p>
 290                 </td>
 291 <td>
 292                   <p>
 293                     \x13
 294                   </p>
 295                 </td>
 296 </tr>
 297 <tr>
 298 <td>
 299                   <p>
 300                     DC4
 301                   </p>
 302                 </td>
 303 <td>
 304                   <p>
 305                     \x14
 306                   </p>
 307                 </td>
 308 </tr>
 309 <tr>
 310 <td>
 311                   <p>
 312                     NAK
 313                   </p>
 314                 </td>
 315 <td>
 316                   <p>
 317                     \x15
 318                   </p>
 319                 </td>
 320 </tr>
 321 <tr>
 322 <td>
 323                   <p>
 324                     SYN
 325                   </p>
 326                 </td>
 327 <td>
 328                   <p>
 329                     \x16
 330                   </p>
 331                 </td>
 332 </tr>
 333 <tr>
 334 <td>
 335                   <p>
 336                     ETB
 337                   </p>
 338                 </td>
 339 <td>
 340                   <p>
 341                     \x17
 342                   </p>
 343                 </td>
 344 </tr>
 345 <tr>
 346 <td>
 347                   <p>
 348                     CAN
 349                   </p>
 350                 </td>
 351 <td>
 352                   <p>
 353                     \x18
 354                   </p>
 355                 </td>
 356 </tr>
 357 <tr>
 358 <td>
 359                   <p>
 360                     EM
 361                   </p>
 362                 </td>
 363 <td>
 364                   <p>
 365                     \x19
 366                   </p>
 367                 </td>
 368 </tr>
 369 <tr>
 370 <td>
 371                   <p>
 372                     SUB
 373                   </p>
 374                 </td>
 375 <td>
 376                   <p>
 377                     \x1A
 378                   </p>
 379                 </td>
 380 </tr>
 381 <tr>
 382 <td>
 383                   <p>
 384                     ESC
 385                   </p>
 386                 </td>
 387 <td>
 388                   <p>
 389                     \x1B
 390                   </p>
 391                 </td>
 392 </tr>
 393 <tr>
 394 <td>
 395                   <p>
 396                     IS4
 397                   </p>
 398                 </td>
 399 <td>
 400                   <p>
 401                     \x1C
 402                   </p>
 403                 </td>
 404 </tr>
 405 <tr>
 406 <td>
 407                   <p>
 408                     IS3
 409                   </p>
 410                 </td>
 411 <td>
 412                   <p>
 413                     \x1D
 414                   </p>
 415                 </td>
 416 </tr>
 417 <tr>
 418 <td>
 419                   <p>
 420                     IS2
 421                   </p>
 422                 </td>
 423 <td>
 424                   <p>
 425                     \x1E
 426                   </p>
 427                 </td>
 428 </tr>
 429 <tr>
 430 <td>
 431                   <p>
 432                     IS1
 433                   </p>
 434                 </td>
 435 <td>
 436                   <p>
 437                     \x1F
 438                   </p>
 439                 </td>
 440 </tr>
 441 <tr>
 442 <td>
 443                   <p>
 444                     space
 445                   </p>
 446                 </td>
 447 <td>
 448                   <p>
 449                     \x20
 450                   </p>
 451                 </td>
 452 </tr>
 453 <tr>
 454 <td>
 455                   <p>
 456                     exclamation-mark
 457                   </p>
 458                 </td>
 459 <td>
 460                   <p>
 461                     !
 462                   </p>
 463                 </td>
 464 </tr>
 465 <tr>
 466 <td>
 467                   <p>
 468                     quotation-mark
 469                   </p>
 470                 </td>
 471 <td>
 472                   <p>
 473                     "
 474                   </p>
 475                 </td>
 476 </tr>
 477 <tr>
 478 <td>
 479                   <p>
 480                     number-sign
 481                   </p>
 482                 </td>
 483 <td>
 484                   <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"></ol></div>
 485                 </td>
 486 </tr>
 487 <tr>
 488 <td>
 489                   <p>
 490                     dollar-sign
 491                   </p>
 492                 </td>
 493 <td>
 494                   <p>
 495                     $
 496                   </p>
 497                 </td>
 498 </tr>
 499 <tr>
 500 <td>
 501                   <p>
 502                     percent-sign
 503                   </p>
 504                 </td>
 505 <td>
 506                   <p>
 507                     %
 508                   </p>
 509                 </td>
 510 </tr>
 511 <tr>
 512 <td>
 513                   <p>
 514                     ampersand
 515                   </p>
 516                 </td>
 517 <td>
 518                   <p>
 519                     &amp;
 520                   </p>
 521                 </td>
 522 </tr>
 523 <tr>
 524 <td>
 525                   <p>
 526                     apostrophe
 527                   </p>
 528                 </td>
 529 <td>
 530                   <p>
 531                     '
 532                   </p>
 533                 </td>
 534 </tr>
 535 <tr>
 536 <td>
 537                   <p>
 538                     left-parenthesis
 539                   </p>
 540                 </td>
 541 <td>
 542                   <p>
 543                     (
 544                   </p>
 545                 </td>
 546 </tr>
 547 <tr>
 548 <td>
 549                   <p>
 550                     right-parenthesis
 551                   </p>
 552                 </td>
 553 <td>
 554                   <p>
 555                     )
 556                   </p>
 557                 </td>
 558 </tr>
 559 <tr>
 560 <td>
 561                   <p>
 562                     asterisk
 563                   </p>
 564                 </td>
 565 <td>
 566                   <p>
 567                     *
 568                   </p>
 569                 </td>
 570 </tr>
 571 <tr>
 572 <td>
 573                   <p>
 574                     plus-sign
 575                   </p>
 576                 </td>
 577 <td>
 578                   <p>
 579                     +
 580                   </p>
 581                 </td>
 582 </tr>
 583 <tr>
 584 <td>
 585                   <p>
 586                     comma
 587                   </p>
 588                 </td>
 589 <td>
 590                   <p>
 591                     ,
 592                   </p>
 593                 </td>
 594 </tr>
 595 <tr>
 596 <td>
 597                   <p>
 598                     hyphen
 599                   </p>
 600                 </td>
 601 <td>
 602                   <p>
 603                     -
 604                   </p>
 605                 </td>
 606 </tr>
 607 <tr>
 608 <td>
 609                   <p>
 610                     period
 611                   </p>
 612                 </td>
 613 <td>
 614                   <p>
 615                     .
 616                   </p>
 617                 </td>
 618 </tr>
 619 <tr>
 620 <td>
 621                   <p>
 622                     slash
 623                   </p>
 624                 </td>
 625 <td>
 626                   <p>
 627                     /
 628                   </p>
 629                 </td>
 630 </tr>
 631 <tr>
 632 <td>
 633                   <p>
 634                     zero
 635                   </p>
 636                 </td>
 637 <td>
 638                   <p>
 639                     0
 640                   </p>
 641                 </td>
 642 </tr>
 643 <tr>
 644 <td>
 645                   <p>
 646                     one
 647                   </p>
 648                 </td>
 649 <td>
 650                   <p>
 651                     1
 652                   </p>
 653                 </td>
 654 </tr>
 655 <tr>
 656 <td>
 657                   <p>
 658                     two
 659                   </p>
 660                 </td>
 661 <td>
 662                   <p>
 663                     2
 664                   </p>
 665                 </td>
 666 </tr>
 667 <tr>
 668 <td>
 669                   <p>
 670                     three
 671                   </p>
 672                 </td>
 673 <td>
 674                   <p>
 675                     3
 676                   </p>
 677                 </td>
 678 </tr>
 679 <tr>
 680 <td>
 681                   <p>
 682                     four
 683                   </p>
 684                 </td>
 685 <td>
 686                   <p>
 687                     4
 688                   </p>
 689                 </td>
 690 </tr>
 691 <tr>
 692 <td>
 693                   <p>
 694                     five
 695                   </p>
 696                 </td>
 697 <td>
 698                   <p>
 699                     5
 700                   </p>
 701                 </td>
 702 </tr>
 703 <tr>
 704 <td>
 705                   <p>
 706                     six
 707                   </p>
 708                 </td>
 709 <td>
 710                   <p>
 711                     6
 712                   </p>
 713                 </td>
 714 </tr>
 715 <tr>
 716 <td>
 717                   <p>
 718                     seven
 719                   </p>
 720                 </td>
 721 <td>
 722                   <p>
 723                     7
 724                   </p>
 725                 </td>
 726 </tr>
 727 <tr>
 728 <td>
 729                   <p>
 730                     eight
 731                   </p>
 732                 </td>
 733 <td>
 734                   <p>
 735                     8
 736                   </p>
 737                 </td>
 738 </tr>
 739 <tr>
 740 <td>
 741                   <p>
 742                     nine
 743                   </p>
 744                 </td>
 745 <td>
 746                   <p>
 747                     9
 748                   </p>
 749                 </td>
 750 </tr>
 751 <tr>
 752 <td>
 753                   <p>
 754                     colon
 755                   </p>
 756                 </td>
 757 <td>
 758                   <p>
 759                     :
 760                   </p>
 761                 </td>
 762 </tr>
 763 <tr>
 764 <td>
 765                   <p>
 766                     semicolon
 767                   </p>
 768                 </td>
 769 <td>
 770                   <p>
 771                     ;
 772                   </p>
 773                 </td>
 774 </tr>
 775 <tr>
 776 <td>
 777                   <p>
 778                     less-than-sign
 779                   </p>
 780                 </td>
 781 <td>
 782                   <p>
 783                     &lt;
 784                   </p>
 785                 </td>
 786 </tr>
 787 <tr>
 788 <td>
 789                   <p>
 790                     equals-sign
 791                   </p>
 792                 </td>
 793 <td>
 794                   <p>
 795                     =
 796                   </p>
 797                 </td>
 798 </tr>
 799 <tr>
 800 <td>
 801                   <p>
 802                     greater-than-sign
 803                   </p>
 804                 </td>
 805 <td>
 806                   <p>
 807                     &gt;
 808                   </p>
 809                 </td>
 810 </tr>
 811 <tr>
 812 <td>
 813                   <p>
 814                     question-mark
 815                   </p>
 816                 </td>
 817 <td>
 818                   <p>
 819                     ?
 820                   </p>
 821                 </td>
 822 </tr>
 823 <tr>
 824 <td>
 825                   <p>
 826                     commercial-at
 827                   </p>
 828                 </td>
 829 <td>
 830                   <p>
 831                     @
 832                   </p>
 833                 </td>
 834 </tr>
 835 <tr>
 836 <td>
 837                   <p>
 838                     left-square-bracket
 839                   </p>
 840                 </td>
 841 <td>
 842                   <p>
 843                     [
 844                   </p>
 845                 </td>
 846 </tr>
 847 <tr>
 848 <td>
 849                   <p>
 850                     backslash
 851                   </p>
 852                 </td>
 853 <td>
 854                   <p>
 855                     \
 856                   </p>
 857                 </td>
 858 </tr>
 859 <tr>
 860 <td>
 861                   <p>
 862                     right-square-bracket
 863                   </p>
 864                 </td>
 865 <td>
 866                   <p>
 867                     ]
 868                   </p>
 869                 </td>
 870 </tr>
 871 <tr>
 872 <td>
 873                   <p>
 874                     circumflex
 875                   </p>
 876                 </td>
 877 <td>
 878                   <p>
 879                     ~
 880                   </p>
 881                 </td>
 882 </tr>
 883 <tr>
 884 <td>
 885                   <p>
 886                     underscore
 887                   </p>
 888                 </td>
 889 <td>
 890                   <p>
 891                     _
 892                   </p>
 893                 </td>
 894 </tr>
 895 <tr>
 896 <td>
 897                   <p>
 898                     grave-accent
 899                   </p>
 900                 </td>
 901 <td>
 902                   <p>
 903                     `
 904                   </p>
 905                 </td>
 906 </tr>
 907 <tr>
 908 <td>
 909                   <p>
 910                     left-curly-bracket
 911                   </p>
 912                 </td>
 913 <td>
 914                   <p>
 915                     {
 916                   </p>
 917                 </td>
 918 </tr>
 919 <tr>
 920 <td>
 921                   <p>
 922                     vertical-line
 923                   </p>
 924                 </td>
 925 <td>
 926                   <p>
 927                     |
 928                   </p>
 929                 </td>
 930 </tr>
 931 <tr>
 932 <td>
 933                   <p>
 934                     right-curly-bracket
 935                   </p>
 936                 </td>
 937 <td>
 938                   <p>
 939                     }
 940                   </p>
 941                 </td>
 942 </tr>
 943 <tr>
 944 <td>
 945                   <p>
 946                     tilde
 947                   </p>
 948                 </td>
 949 <td>
 950                   <p>
 951                     ~
 952                   </p>
 953                 </td>
 954 </tr>
 955 <tr>
 956 <td>
 957                   <p>
 958                     DEL
 959                   </p>
 960                 </td>
 961 <td>
 962                   <p>
 963                     \x7F
 964                   </p>
 965                 </td>
 966 </tr>
 967 </tbody>
 968 </table></div>
 969 </div>
 970 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 971 <td align="left"></td>
 972 <td align="right"><div class="copyright-footer">Copyright &#169; 1998-2013 John Maddock<p>
 973         Distributed under the Boost Software License, Version 1.0. (See accompanying
 974         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
 975       </p>
 976 </div></td>
 977 </tr></table>
 978 <hr>
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