| [/ |
| Copyright 2006-2007 John Maddock. |
| Distributed under the Boost Software License, Version 1.0. |
| (See accompanying file LICENSE_1_0.txt or copy at |
| http://www.boost.org/LICENSE_1_0.txt). |
| ] |
| |
| |
| [section:collating_names Collating Names] |
| |
| [section:digraphs Digraphs] |
| |
| The following are treated as valid digraphs when used as a collating name: |
| |
| "ae", "Ae", "AE", "ch", "Ch", "CH", "ll", "Ll", "LL", "ss", "Ss", "SS", "nj", "Nj", "NJ", "dz", "Dz", "DZ", "lj", "Lj", "LJ". |
| |
| So for example the expression: |
| |
| [pre \[\[.ae.\]-c\] ] |
| |
| will match any character that collates between the digraph "ae" and the character "c". |
| |
| [endsect] |
| |
| [section:posix_symbolic_names POSIX Symbolic Names] |
| |
| The following symbolic names are recognised as valid collating element names, |
| in addition to any single character, this allows you to write for example: |
| |
| [pre \[\[.left-square-bracket.\]\[.right-square-bracket.\]\]] |
| |
| if you wanted to match either "\[" or "\]". |
| |
| [table |
| [[Name][Character]] |
| [[NUL] [\\x00]] |
| [[SOH] [\\x01]] |
| [[STX] [\\x02]] |
| [[ETX] [\\x03]] |
| [[EOT] [\\x04]] |
| [[ENQ] [\\x05]] |
| [[ACK] [\\x06]] |
| [[alert] [\\x07]] |
| [[backspace] [\\x08]] |
| [[tab] [\\t]] |
| [[newline] [\\n]] |
| [[vertical-tab] [\\v]] |
| [[form-feed] [\\f]] |
| [[carriage-return] [\\r]] |
| [[SO] [\\xE]] |
| [[SI] [\\xF]] |
| [[DLE] [\\x10]] |
| [[DC1] [\\x11]] |
| [[DC2] [\\x12]] |
| [[DC3] [\\x13]] |
| [[DC4] [\\x14]] |
| [[NAK] [\\x15]] |
| [[SYN] [\\x16]] |
| [[ETB] [\\x17]] |
| [[CAN] [\\x18]] |
| [[EM] [\\x19]] |
| [[SUB] [\\x1A]] |
| [[ESC] [\\x1B]] |
| [[IS4] [\\x1C]] |
| [[IS3] [\\x1D]] |
| [[IS2] [\\x1E]] |
| [[IS1] [\\x1F]] |
| [[space] [\\x20]] |
| [[exclamation-mark] [!]] |
| [[quotation-mark] ["]] |
| [[number-sign] [#]] |
| [[dollar-sign] [$]] |
| [[percent-sign] [%]] |
| [[ampersand] [&]] |
| [[apostrophe] [\']] |
| [[left-parenthesis] [(]] |
| [[right-parenthesis] [)]] |
| [[asterisk] [\*]] |
| [[plus-sign] [+]] |
| [[comma] [,]] |
| [[hyphen] [-]] |
| [[period] [.]] |
| [[slash] [ / ]] |
| [[zero] [0]] |
| [[one] [1]] |
| [[two] [2]] |
| [[three] [3]] |
| [[four] [4]] |
| [[five] [5]] |
| [[six] [6]] |
| [[seven] [7]] |
| [[eight] [8]] |
| [[nine] [9]] |
| [[colon] [\:]] |
| [[semicolon] [;]] |
| [[less-than-sign] [<]] |
| [[equals-sign] [=]] |
| [[greater-than-sign] [>]] |
| [[question-mark] [?]] |
| [[commercial-at] [@]] |
| [[left-square-bracket] [\[]] |
| [[backslash][\\]] |
| [[right-square-bracket][\]]] |
| [[circumflex][~]] |
| [[underscore][_]] |
| [[grave-accent][`]] |
| [[left-curly-bracket][{]] |
| [[vertical-line][|]] |
| [[right-curly-bracket][}]] |
| [[tilde][~]] |
| [[DEL][\\x7F]] |
| ] |
| |
| [endsect] |
| |
| [section:named_unicode Named Unicode Characters] |
| |
| When using [link boost_regex.unicode Unicode aware regular expressions] (with the `u32regex` type), all |
| the normal symbolic names for Unicode characters (those given in Unidata.txt) |
| are recognised. So for example: |
| |
| [pre \[\[.CYRILLIC CAPITAL LETTER I.\]\] ] |
| |
| would match the Unicode character 0x0418. |
| |
| [endsect] |
| [endsect] |
| |
