1<html> 2<!-- AUTOMATICALLY GENERATED by mksyntaxhtml --> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> 5<title>RE2 regular expression syntax reference</title> 6</head> 7<body> 8<h1>RE2 regular expression syntax reference</h1> 9 10<table border=0 cellpadding=2 cellspacing=2> 11<tr><td colspan=2>This page lists the regular expression syntax accepted by RE2.</td></tr> 12<tr><td colspan=2>It also lists syntax accepted by PCRE, PERL, and VIM.</td></tr> 13<tr><td colspan=2>Grayed out expressions are not supported by RE2.</td></tr> 14<tr><td></td></tr> 15<tr><td colspan=2><b>Single characters:</b></td></tr> 16<tr><td><code>.</code></td><td>any character, possibly including newline (s=true)</td></tr> 17<tr><td><code>[xyz]</code></td><td>character class</td></tr> 18<tr><td><code>[^xyz]</code></td><td>negated character class</td></tr> 19<tr><td><code>\d</code></td><td>Perl character class</td></tr> 20<tr><td><code>\D</code></td><td>negated Perl character class</td></tr> 21<tr><td><code>[[:alpha:]]</code></td><td>ASCII character class</td></tr> 22<tr><td><code>[[:^alpha:]]</code></td><td>negated ASCII character class</td></tr> 23<tr><td><code>\pN</code></td><td>Unicode character class (one-letter name)</td></tr> 24<tr><td><code>\p{Greek}</code></td><td>Unicode character class</td></tr> 25<tr><td><code>\PN</code></td><td>negated Unicode character class (one-letter name)</td></tr> 26<tr><td><code>\P{Greek}</code></td><td>negated Unicode character class</td></tr> 27<tr><td></td></tr> 28<tr><td colspan=2><b>Composites:</b></td></tr> 29<tr><td><code>xy</code></td><td><code>x</code> followed by <code>y</code></td></tr> 30<tr><td><code>x|y</code></td><td><code>x</code> or <code>y</code> (prefer <code>x</code>)</td></tr> 31<tr><td></td></tr> 32<tr><td colspan=2><b>Repetitions:</b></td></tr> 33<tr><td><code>x*</code></td><td>zero or more <code>x</code>, prefer more</td></tr> 34<tr><td><code>x+</code></td><td>one or more <code>x</code>, prefer more</td></tr> 35<tr><td><code>x?</code></td><td>zero or one <code>x</code>, prefer one</td></tr> 36<tr><td><code>x{n,m}</code></td><td><code>n</code> or <code>n</code>+1 or ... or <code>m</code> <code>x</code>, prefer more</td></tr> 37<tr><td><code>x{n,}</code></td><td><code>n</code> or more <code>x</code>, prefer more</td></tr> 38<tr><td><code>x{n}</code></td><td>exactly <code>n</code> <code>x</code></td></tr> 39<tr><td><code>x*?</code></td><td>zero or more <code>x</code>, prefer fewer</td></tr> 40<tr><td><code>x+?</code></td><td>one or more <code>x</code>, prefer fewer</td></tr> 41<tr><td><code>x??</code></td><td>zero or one <code>x</code>, prefer zero</td></tr> 42<tr><td><code>x{n,m}?</code></td><td><code>n</code> or <code>n</code>+1 or ... or <code>m</code> <code>x</code>, prefer fewer</td></tr> 43<tr><td><code>x{n,}?</code></td><td><code>n</code> or more <code>x</code>, prefer fewer</td></tr> 44<tr><td><code>x{n}?</code></td><td>exactly <code>n</code> <code>x</code></td></tr> 45<tr><td><code><font color=#808080>x{}</font></code></td><td>(≡ <code>x*</code>) <font size=-2>VIM</font></td></tr> 46<tr><td><code><font color=#808080>x{-}</font></code></td><td>(≡ <code>x*?</code>) <font size=-2>VIM</font></td></tr> 47<tr><td><code><font color=#808080>x{-n}</font></code></td><td>(≡ <code>x{n}?</code>) <font size=-2>VIM</font></td></tr> 48<tr><td><code><font color=#808080>x=</font></code></td><td>(≡ <code>x?</code>) <font size=-2>VIM</font></td></tr> 49<tr><td></td></tr> 50<tr><td colspan=2>Implementation restriction: The counting forms <code>x{n,m}</code>, <code>x{n,}</code>, and <code>x{n}</code></td></tr> 51<tr><td colspan=2>reject forms that create a minimum or maximum repetition count above 1000.</td></tr> 52<tr><td colspan=2>Unlimited repetitions are not subject to this restriction.</td></tr> 53<tr><td></td></tr> 54<tr><td colspan=2><b>Possessive repetitions:</b></td></tr> 55<tr><td><code><font color=#808080>x*+</font></code></td><td>zero or more <code>x</code>, possessive </td></tr> 56<tr><td><code><font color=#808080>x++</font></code></td><td>one or more <code>x</code>, possessive </td></tr> 57<tr><td><code><font color=#808080>x?+</font></code></td><td>zero or one <code>x</code>, possessive </td></tr> 58<tr><td><code><font color=#808080>x{n,m}+</font></code></td><td><code>n</code> or ... or <code>m</code> <code>x</code>, possessive </td></tr> 59<tr><td><code><font color=#808080>x{n,}+</font></code></td><td><code>n</code> or more <code>x</code>, possessive </td></tr> 60<tr><td><code><font color=#808080>x{n}+</font></code></td><td>exactly <code>n</code> <code>x</code>, possessive </td></tr> 61<tr><td></td></tr> 62<tr><td colspan=2><b>Grouping:</b></td></tr> 63<tr><td><code>(re)</code></td><td>numbered capturing group (submatch)</td></tr> 64<tr><td><code>(?P<name>re)</code></td><td>named & numbered capturing group (submatch)</td></tr> 65<tr><td><code><font color=#808080>(?<name>re)</font></code></td><td>named & numbered capturing group (submatch) </td></tr> 66<tr><td><code><font color=#808080>(?'name're)</font></code></td><td>named & numbered capturing group (submatch) </td></tr> 67<tr><td><code>(?:re)</code></td><td>non-capturing group</td></tr> 68<tr><td><code>(?flags)</code></td><td>set flags within current group; non-capturing</td></tr> 69<tr><td><code>(?flags:re)</code></td><td>set flags during re; non-capturing</td></tr> 70<tr><td><code><font color=#808080>(?#text)</font></code></td><td>comment </td></tr> 71<tr><td><code><font color=#808080>(?|x|y|z)</font></code></td><td>branch numbering reset </td></tr> 72<tr><td><code><font color=#808080>(?>re)</font></code></td><td>possessive match of <code>re</code> </td></tr> 73<tr><td><code><font color=#808080>re@></font></code></td><td>possessive match of <code>re</code> <font size=-2>VIM</font></td></tr> 74<tr><td><code><font color=#808080>%(re)</font></code></td><td>non-capturing group <font size=-2>VIM</font></td></tr> 75<tr><td></td></tr> 76<tr><td colspan=2><b>Flags:</b></td></tr> 77<tr><td><code>i</code></td><td>case-insensitive (default false)</td></tr> 78<tr><td><code>m</code></td><td>multi-line mode: <code>^</code> and <code>$</code> match begin/end line in addition to begin/end text (default false)</td></tr> 79<tr><td><code>s</code></td><td>let <code>.</code> match <code>\n</code> (default false)</td></tr> 80<tr><td><code>U</code></td><td>ungreedy: swap meaning of <code>x*</code> and <code>x*?</code>, <code>x+</code> and <code>x+?</code>, etc (default false)</td></tr> 81<tr><td colspan=2>Flag syntax is <code>xyz</code> (set) or <code>-xyz</code> (clear) or <code>xy-z</code> (set <code>xy</code>, clear <code>z</code>).</td></tr> 82<tr><td></td></tr> 83<tr><td colspan=2><b>Empty strings:</b></td></tr> 84<tr><td><code>^</code></td><td>at beginning of text or line (<code>m</code>=true)</td></tr> 85<tr><td><code>$</code></td><td>at end of text (like <code>\z</code> not <code>\Z</code>) or line (<code>m</code>=true)</td></tr> 86<tr><td><code>\A</code></td><td>at beginning of text</td></tr> 87<tr><td><code>\b</code></td><td>at ASCII word boundary (<code>\w</code> on one side and <code>\W</code>, <code>\A</code>, or <code>\z</code> on the other)</td></tr> 88<tr><td><code>\B</code></td><td>not at ASCII word boundary</td></tr> 89<tr><td><code><font color=#808080>\G</font></code></td><td>at beginning of subtext being searched <font size=-2>PCRE</font></td></tr> 90<tr><td><code><font color=#808080>\G</font></code></td><td>at end of last match <font size=-2>PERL</font></td></tr> 91<tr><td><code><font color=#808080>\Z</font></code></td><td>at end of text, or before newline at end of text </td></tr> 92<tr><td><code>\z</code></td><td>at end of text</td></tr> 93<tr><td><code><font color=#808080>(?=re)</font></code></td><td>before text matching <code>re</code> </td></tr> 94<tr><td><code><font color=#808080>(?!re)</font></code></td><td>before text not matching <code>re</code> </td></tr> 95<tr><td><code><font color=#808080>(?<=re)</font></code></td><td>after text matching <code>re</code> </td></tr> 96<tr><td><code><font color=#808080>(?<!re)</font></code></td><td>after text not matching <code>re</code> </td></tr> 97<tr><td><code><font color=#808080>re&</font></code></td><td>before text matching <code>re</code> <font size=-2>VIM</font></td></tr> 98<tr><td><code><font color=#808080>re@=</font></code></td><td>before text matching <code>re</code> <font size=-2>VIM</font></td></tr> 99<tr><td><code><font color=#808080>re@!</font></code></td><td>before text not matching <code>re</code> <font size=-2>VIM</font></td></tr> 100<tr><td><code><font color=#808080>re@<=</font></code></td><td>after text matching <code>re</code> <font size=-2>VIM</font></td></tr> 101<tr><td><code><font color=#808080>re@<!</font></code></td><td>after text not matching <code>re</code> <font size=-2>VIM</font></td></tr> 102<tr><td><code><font color=#808080>\zs</font></code></td><td>sets start of match (= \K) <font size=-2>VIM</font></td></tr> 103<tr><td><code><font color=#808080>\ze</font></code></td><td>sets end of match <font size=-2>VIM</font></td></tr> 104<tr><td><code><font color=#808080>\%^</font></code></td><td>beginning of file <font size=-2>VIM</font></td></tr> 105<tr><td><code><font color=#808080>\%$</font></code></td><td>end of file <font size=-2>VIM</font></td></tr> 106<tr><td><code><font color=#808080>\%V</font></code></td><td>on screen <font size=-2>VIM</font></td></tr> 107<tr><td><code><font color=#808080>\%#</font></code></td><td>cursor position <font size=-2>VIM</font></td></tr> 108<tr><td><code><font color=#808080>\%'m</font></code></td><td>mark <code>m</code> position <font size=-2>VIM</font></td></tr> 109<tr><td><code><font color=#808080>\%23l</font></code></td><td>in line 23 <font size=-2>VIM</font></td></tr> 110<tr><td><code><font color=#808080>\%23c</font></code></td><td>in column 23 <font size=-2>VIM</font></td></tr> 111<tr><td><code><font color=#808080>\%23v</font></code></td><td>in virtual column 23 <font size=-2>VIM</font></td></tr> 112<tr><td></td></tr> 113<tr><td colspan=2><b>Escape sequences:</b></td></tr> 114<tr><td><code>\a</code></td><td>bell (≡ <code>\007</code>)</td></tr> 115<tr><td><code>\f</code></td><td>form feed (≡ <code>\014</code>)</td></tr> 116<tr><td><code>\t</code></td><td>horizontal tab (≡ <code>\011</code>)</td></tr> 117<tr><td><code>\n</code></td><td>newline (≡ <code>\012</code>)</td></tr> 118<tr><td><code>\r</code></td><td>carriage return (≡ <code>\015</code>)</td></tr> 119<tr><td><code>\v</code></td><td>vertical tab character (≡ <code>\013</code>)</td></tr> 120<tr><td><code>\*</code></td><td>literal <code>*</code>, for any punctuation character <code>*</code></td></tr> 121<tr><td><code>\123</code></td><td>octal character code (up to three digits)</td></tr> 122<tr><td><code>\x7F</code></td><td>hex character code (exactly two digits)</td></tr> 123<tr><td><code>\x{10FFFF}</code></td><td>hex character code</td></tr> 124<tr><td><code>\C</code></td><td>match a single byte even in UTF-8 mode</td></tr> 125<tr><td><code>\Q...\E</code></td><td>literal text <code>...</code> even if <code>...</code> has punctuation</td></tr> 126<tr><td></td></tr> 127<tr><td><code><font color=#808080>\1</font></code></td><td>backreference </td></tr> 128<tr><td><code><font color=#808080>\b</font></code></td><td>backspace (use <code>\010</code>)</td></tr> 129<tr><td><code><font color=#808080>\cK</font></code></td><td>control char ^K (use <code>\001</code> etc)</td></tr> 130<tr><td><code><font color=#808080>\e</font></code></td><td>escape (use <code>\033</code>)</td></tr> 131<tr><td><code><font color=#808080>\g1</font></code></td><td>backreference </td></tr> 132<tr><td><code><font color=#808080>\g{1}</font></code></td><td>backreference </td></tr> 133<tr><td><code><font color=#808080>\g{+1}</font></code></td><td>backreference </td></tr> 134<tr><td><code><font color=#808080>\g{-1}</font></code></td><td>backreference </td></tr> 135<tr><td><code><font color=#808080>\g{name}</font></code></td><td>named backreference </td></tr> 136<tr><td><code><font color=#808080>\g<name></font></code></td><td>subroutine call </td></tr> 137<tr><td><code><font color=#808080>\g'name'</font></code></td><td>subroutine call </td></tr> 138<tr><td><code><font color=#808080>\k<name></font></code></td><td>named backreference </td></tr> 139<tr><td><code><font color=#808080>\k'name'</font></code></td><td>named backreference </td></tr> 140<tr><td><code><font color=#808080>\lX</font></code></td><td>lowercase <code>X</code> </td></tr> 141<tr><td><code><font color=#808080>\ux</font></code></td><td>uppercase <code>x</code> </td></tr> 142<tr><td><code><font color=#808080>\L...\E</font></code></td><td>lowercase text <code>...</code> </td></tr> 143<tr><td><code><font color=#808080>\K</font></code></td><td>reset beginning of <code>$0</code> </td></tr> 144<tr><td><code><font color=#808080>\N{name}</font></code></td><td>named Unicode character </td></tr> 145<tr><td><code><font color=#808080>\R</font></code></td><td>line break </td></tr> 146<tr><td><code><font color=#808080>\U...\E</font></code></td><td>upper case text <code>...</code> </td></tr> 147<tr><td><code><font color=#808080>\X</font></code></td><td>extended Unicode sequence </td></tr> 148<tr><td></td></tr> 149<tr><td><code><font color=#808080>\%d123</font></code></td><td>decimal character 123 <font size=-2>VIM</font></td></tr> 150<tr><td><code><font color=#808080>\%xFF</font></code></td><td>hex character FF <font size=-2>VIM</font></td></tr> 151<tr><td><code><font color=#808080>\%o123</font></code></td><td>octal character 123 <font size=-2>VIM</font></td></tr> 152<tr><td><code><font color=#808080>\%u1234</font></code></td><td>Unicode character 0x1234 <font size=-2>VIM</font></td></tr> 153<tr><td><code><font color=#808080>\%U12345678</font></code></td><td>Unicode character 0x12345678 <font size=-2>VIM</font></td></tr> 154<tr><td></td></tr> 155<tr><td colspan=2><b>Character class elements:</b></td></tr> 156<tr><td><code>x</code></td><td>single character</td></tr> 157<tr><td><code>A-Z</code></td><td>character range (inclusive)</td></tr> 158<tr><td><code>\d</code></td><td>Perl character class</td></tr> 159<tr><td><code>[:foo:]</code></td><td>ASCII character class <code>foo</code></td></tr> 160<tr><td><code>\p{Foo}</code></td><td>Unicode character class <code>Foo</code></td></tr> 161<tr><td><code>\pF</code></td><td>Unicode character class <code>F</code> (one-letter name)</td></tr> 162<tr><td></td></tr> 163<tr><td colspan=2><b>Named character classes as character class elements:</b></td></tr> 164<tr><td><code>[\d]</code></td><td>digits (≡ <code>\d</code>)</td></tr> 165<tr><td><code>[^\d]</code></td><td>not digits (≡ <code>\D</code>)</td></tr> 166<tr><td><code>[\D]</code></td><td>not digits (≡ <code>\D</code>)</td></tr> 167<tr><td><code>[^\D]</code></td><td>not not digits (≡ <code>\d</code>)</td></tr> 168<tr><td><code>[[:name:]]</code></td><td>named ASCII class inside character class (≡ <code>[:name:]</code>)</td></tr> 169<tr><td><code>[^[:name:]]</code></td><td>named ASCII class inside negated character class (≡ <code>[:^name:]</code>)</td></tr> 170<tr><td><code>[\p{Name}]</code></td><td>named Unicode property inside character class (≡ <code>\p{Name}</code>)</td></tr> 171<tr><td><code>[^\p{Name}]</code></td><td>named Unicode property inside negated character class (≡ <code>\P{Name}</code>)</td></tr> 172<tr><td></td></tr> 173<tr><td colspan=2><b>Perl character classes (all ASCII-only):</b></td></tr> 174<tr><td><code>\d</code></td><td>digits (≡ <code>[0-9]</code>)</td></tr> 175<tr><td><code>\D</code></td><td>not digits (≡ <code>[^0-9]</code>)</td></tr> 176<tr><td><code>\s</code></td><td>whitespace (≡ <code>[\t\n\f\r ]</code>)</td></tr> 177<tr><td><code>\S</code></td><td>not whitespace (≡ <code>[^\t\n\f\r ]</code>)</td></tr> 178<tr><td><code>\w</code></td><td>word characters (≡ <code>[0-9A-Za-z_]</code>)</td></tr> 179<tr><td><code>\W</code></td><td>not word characters (≡ <code>[^0-9A-Za-z_]</code>)</td></tr> 180<tr><td></td></tr> 181<tr><td><code><font color=#808080>\h</font></code></td><td>horizontal space </td></tr> 182<tr><td><code><font color=#808080>\H</font></code></td><td>not horizontal space </td></tr> 183<tr><td><code><font color=#808080>\v</font></code></td><td>vertical space </td></tr> 184<tr><td><code><font color=#808080>\V</font></code></td><td>not vertical space </td></tr> 185<tr><td></td></tr> 186<tr><td colspan=2><b>ASCII character classes:</b></td></tr> 187<tr><td><code>[[:alnum:]]</code></td><td>alphanumeric (≡ <code>[0-9A-Za-z]</code>)</td></tr> 188<tr><td><code>[[:alpha:]]</code></td><td>alphabetic (≡ <code>[A-Za-z]</code>)</td></tr> 189<tr><td><code>[[:ascii:]]</code></td><td>ASCII (≡ <code>[\x00-\x7F]</code>)</td></tr> 190<tr><td><code>[[:blank:]]</code></td><td>blank (≡ <code>[\t ]</code>)</td></tr> 191<tr><td><code>[[:cntrl:]]</code></td><td>control (≡ <code>[\x00-\x1F\x7F]</code>)</td></tr> 192<tr><td><code>[[:digit:]]</code></td><td>digits (≡ <code>[0-9]</code>)</td></tr> 193<tr><td><code>[[:graph:]]</code></td><td>graphical (≡ <code>[!-~] == [A-Za-z0-9!"#$%&'()*+,\-./:;<=>?@[\\\]^_`{|}~]</code>)</td></tr> 194<tr><td><code>[[:lower:]]</code></td><td>lower case (≡ <code>[a-z]</code>)</td></tr> 195<tr><td><code>[[:print:]]</code></td><td>printable (≡ <code>[ -~] == [ [:graph:]]</code>)</td></tr> 196<tr><td><code>[[:punct:]]</code></td><td>punctuation (≡ <code>[!-/:-@[-`{-~]</code>)</td></tr> 197<tr><td><code>[[:space:]]</code></td><td>whitespace (≡ <code>[\t\n\v\f\r ]</code>)</td></tr> 198<tr><td><code>[[:upper:]]</code></td><td>upper case (≡ <code>[A-Z]</code>)</td></tr> 199<tr><td><code>[[:word:]]</code></td><td>word characters (≡ <code>[0-9A-Za-z_]</code>)</td></tr> 200<tr><td><code>[[:xdigit:]]</code></td><td>hex digit (≡ <code>[0-9A-Fa-f]</code>)</td></tr> 201<tr><td></td></tr> 202<tr><td colspan=2><b>Unicode character class names--general category:</b></td></tr> 203<tr><td><code>C</code></td><td>other</td></tr> 204<tr><td><code>Cc</code></td><td>control</td></tr> 205<tr><td><code>Cf</code></td><td>format</td></tr> 206<tr><td><code><font color=#808080>Cn</font></code></td><td>unassigned code points </td></tr> 207<tr><td><code>Co</code></td><td>private use</td></tr> 208<tr><td><code>Cs</code></td><td>surrogate</td></tr> 209<tr><td><code>L</code></td><td>letter</td></tr> 210<tr><td><code><font color=#808080>LC</font></code></td><td>cased letter </td></tr> 211<tr><td><code><font color=#808080>L&</font></code></td><td>cased letter </td></tr> 212<tr><td><code>Ll</code></td><td>lowercase letter</td></tr> 213<tr><td><code>Lm</code></td><td>modifier letter</td></tr> 214<tr><td><code>Lo</code></td><td>other letter</td></tr> 215<tr><td><code>Lt</code></td><td>titlecase letter</td></tr> 216<tr><td><code>Lu</code></td><td>uppercase letter</td></tr> 217<tr><td><code>M</code></td><td>mark</td></tr> 218<tr><td><code>Mc</code></td><td>spacing mark</td></tr> 219<tr><td><code>Me</code></td><td>enclosing mark</td></tr> 220<tr><td><code>Mn</code></td><td>non-spacing mark</td></tr> 221<tr><td><code>N</code></td><td>number</td></tr> 222<tr><td><code>Nd</code></td><td>decimal number</td></tr> 223<tr><td><code>Nl</code></td><td>letter number</td></tr> 224<tr><td><code>No</code></td><td>other number</td></tr> 225<tr><td><code>P</code></td><td>punctuation</td></tr> 226<tr><td><code>Pc</code></td><td>connector punctuation</td></tr> 227<tr><td><code>Pd</code></td><td>dash punctuation</td></tr> 228<tr><td><code>Pe</code></td><td>close punctuation</td></tr> 229<tr><td><code>Pf</code></td><td>final punctuation</td></tr> 230<tr><td><code>Pi</code></td><td>initial punctuation</td></tr> 231<tr><td><code>Po</code></td><td>other punctuation</td></tr> 232<tr><td><code>Ps</code></td><td>open punctuation</td></tr> 233<tr><td><code>S</code></td><td>symbol</td></tr> 234<tr><td><code>Sc</code></td><td>currency symbol</td></tr> 235<tr><td><code>Sk</code></td><td>modifier symbol</td></tr> 236<tr><td><code>Sm</code></td><td>math symbol</td></tr> 237<tr><td><code>So</code></td><td>other symbol</td></tr> 238<tr><td><code>Z</code></td><td>separator</td></tr> 239<tr><td><code>Zl</code></td><td>line separator</td></tr> 240<tr><td><code>Zp</code></td><td>paragraph separator</td></tr> 241<tr><td><code>Zs</code></td><td>space separator</td></tr> 242<tr><td></td></tr> 243<tr><td colspan=2><b>Unicode character class names--scripts:</b></td></tr> 244<tr><td colspan=2>Adlam</td></tr> 245<tr><td colspan=2>Ahom</td></tr> 246<tr><td colspan=2>Anatolian_Hieroglyphs</td></tr> 247<tr><td colspan=2>Arabic</td></tr> 248<tr><td colspan=2>Armenian</td></tr> 249<tr><td colspan=2>Avestan</td></tr> 250<tr><td colspan=2>Balinese</td></tr> 251<tr><td colspan=2>Bamum</td></tr> 252<tr><td colspan=2>Bassa_Vah</td></tr> 253<tr><td colspan=2>Batak</td></tr> 254<tr><td colspan=2>Bengali</td></tr> 255<tr><td colspan=2>Bhaiksuki</td></tr> 256<tr><td colspan=2>Bopomofo</td></tr> 257<tr><td colspan=2>Brahmi</td></tr> 258<tr><td colspan=2>Braille</td></tr> 259<tr><td colspan=2>Buginese</td></tr> 260<tr><td colspan=2>Buhid</td></tr> 261<tr><td colspan=2>Canadian_Aboriginal</td></tr> 262<tr><td colspan=2>Carian</td></tr> 263<tr><td colspan=2>Caucasian_Albanian</td></tr> 264<tr><td colspan=2>Chakma</td></tr> 265<tr><td colspan=2>Cham</td></tr> 266<tr><td colspan=2>Cherokee</td></tr> 267<tr><td colspan=2>Chorasmian</td></tr> 268<tr><td colspan=2>Common</td></tr> 269<tr><td colspan=2>Coptic</td></tr> 270<tr><td colspan=2>Cuneiform</td></tr> 271<tr><td colspan=2>Cypriot</td></tr> 272<tr><td colspan=2>Cyrillic</td></tr> 273<tr><td colspan=2>Deseret</td></tr> 274<tr><td colspan=2>Devanagari</td></tr> 275<tr><td colspan=2>Dives_Akuru</td></tr> 276<tr><td colspan=2>Dogra</td></tr> 277<tr><td colspan=2>Duployan</td></tr> 278<tr><td colspan=2>Egyptian_Hieroglyphs</td></tr> 279<tr><td colspan=2>Elbasan</td></tr> 280<tr><td colspan=2>Elymaic</td></tr> 281<tr><td colspan=2>Ethiopic</td></tr> 282<tr><td colspan=2>Georgian</td></tr> 283<tr><td colspan=2>Glagolitic</td></tr> 284<tr><td colspan=2>Gothic</td></tr> 285<tr><td colspan=2>Grantha</td></tr> 286<tr><td colspan=2>Greek</td></tr> 287<tr><td colspan=2>Gujarati</td></tr> 288<tr><td colspan=2>Gunjala_Gondi</td></tr> 289<tr><td colspan=2>Gurmukhi</td></tr> 290<tr><td colspan=2>Han</td></tr> 291<tr><td colspan=2>Hangul</td></tr> 292<tr><td colspan=2>Hanifi_Rohingya</td></tr> 293<tr><td colspan=2>Hanunoo</td></tr> 294<tr><td colspan=2>Hatran</td></tr> 295<tr><td colspan=2>Hebrew</td></tr> 296<tr><td colspan=2>Hiragana</td></tr> 297<tr><td colspan=2>Imperial_Aramaic</td></tr> 298<tr><td colspan=2>Inherited</td></tr> 299<tr><td colspan=2>Inscriptional_Pahlavi</td></tr> 300<tr><td colspan=2>Inscriptional_Parthian</td></tr> 301<tr><td colspan=2>Javanese</td></tr> 302<tr><td colspan=2>Kaithi</td></tr> 303<tr><td colspan=2>Kannada</td></tr> 304<tr><td colspan=2>Katakana</td></tr> 305<tr><td colspan=2>Kayah_Li</td></tr> 306<tr><td colspan=2>Kharoshthi</td></tr> 307<tr><td colspan=2>Khitan_Small_Script</td></tr> 308<tr><td colspan=2>Khmer</td></tr> 309<tr><td colspan=2>Khojki</td></tr> 310<tr><td colspan=2>Khudawadi</td></tr> 311<tr><td colspan=2>Lao</td></tr> 312<tr><td colspan=2>Latin</td></tr> 313<tr><td colspan=2>Lepcha</td></tr> 314<tr><td colspan=2>Limbu</td></tr> 315<tr><td colspan=2>Linear_A</td></tr> 316<tr><td colspan=2>Linear_B</td></tr> 317<tr><td colspan=2>Lisu</td></tr> 318<tr><td colspan=2>Lycian</td></tr> 319<tr><td colspan=2>Lydian</td></tr> 320<tr><td colspan=2>Mahajani</td></tr> 321<tr><td colspan=2>Makasar</td></tr> 322<tr><td colspan=2>Malayalam</td></tr> 323<tr><td colspan=2>Mandaic</td></tr> 324<tr><td colspan=2>Manichaean</td></tr> 325<tr><td colspan=2>Marchen</td></tr> 326<tr><td colspan=2>Masaram_Gondi</td></tr> 327<tr><td colspan=2>Medefaidrin</td></tr> 328<tr><td colspan=2>Meetei_Mayek</td></tr> 329<tr><td colspan=2>Mende_Kikakui</td></tr> 330<tr><td colspan=2>Meroitic_Cursive</td></tr> 331<tr><td colspan=2>Meroitic_Hieroglyphs</td></tr> 332<tr><td colspan=2>Miao</td></tr> 333<tr><td colspan=2>Modi</td></tr> 334<tr><td colspan=2>Mongolian</td></tr> 335<tr><td colspan=2>Mro</td></tr> 336<tr><td colspan=2>Multani</td></tr> 337<tr><td colspan=2>Myanmar</td></tr> 338<tr><td colspan=2>Nabataean</td></tr> 339<tr><td colspan=2>Nandinagari</td></tr> 340<tr><td colspan=2>New_Tai_Lue</td></tr> 341<tr><td colspan=2>Newa</td></tr> 342<tr><td colspan=2>Nko</td></tr> 343<tr><td colspan=2>Nushu</td></tr> 344<tr><td colspan=2>Nyiakeng_Puachue_Hmong</td></tr> 345<tr><td colspan=2>Ogham</td></tr> 346<tr><td colspan=2>Ol_Chiki</td></tr> 347<tr><td colspan=2>Old_Hungarian</td></tr> 348<tr><td colspan=2>Old_Italic</td></tr> 349<tr><td colspan=2>Old_North_Arabian</td></tr> 350<tr><td colspan=2>Old_Permic</td></tr> 351<tr><td colspan=2>Old_Persian</td></tr> 352<tr><td colspan=2>Old_Sogdian</td></tr> 353<tr><td colspan=2>Old_South_Arabian</td></tr> 354<tr><td colspan=2>Old_Turkic</td></tr> 355<tr><td colspan=2>Oriya</td></tr> 356<tr><td colspan=2>Osage</td></tr> 357<tr><td colspan=2>Osmanya</td></tr> 358<tr><td colspan=2>Pahawh_Hmong</td></tr> 359<tr><td colspan=2>Palmyrene</td></tr> 360<tr><td colspan=2>Pau_Cin_Hau</td></tr> 361<tr><td colspan=2>Phags_Pa</td></tr> 362<tr><td colspan=2>Phoenician</td></tr> 363<tr><td colspan=2>Psalter_Pahlavi</td></tr> 364<tr><td colspan=2>Rejang</td></tr> 365<tr><td colspan=2>Runic</td></tr> 366<tr><td colspan=2>Samaritan</td></tr> 367<tr><td colspan=2>Saurashtra</td></tr> 368<tr><td colspan=2>Sharada</td></tr> 369<tr><td colspan=2>Shavian</td></tr> 370<tr><td colspan=2>Siddham</td></tr> 371<tr><td colspan=2>SignWriting</td></tr> 372<tr><td colspan=2>Sinhala</td></tr> 373<tr><td colspan=2>Sogdian</td></tr> 374<tr><td colspan=2>Sora_Sompeng</td></tr> 375<tr><td colspan=2>Soyombo</td></tr> 376<tr><td colspan=2>Sundanese</td></tr> 377<tr><td colspan=2>Syloti_Nagri</td></tr> 378<tr><td colspan=2>Syriac</td></tr> 379<tr><td colspan=2>Tagalog</td></tr> 380<tr><td colspan=2>Tagbanwa</td></tr> 381<tr><td colspan=2>Tai_Le</td></tr> 382<tr><td colspan=2>Tai_Tham</td></tr> 383<tr><td colspan=2>Tai_Viet</td></tr> 384<tr><td colspan=2>Takri</td></tr> 385<tr><td colspan=2>Tamil</td></tr> 386<tr><td colspan=2>Tangut</td></tr> 387<tr><td colspan=2>Telugu</td></tr> 388<tr><td colspan=2>Thaana</td></tr> 389<tr><td colspan=2>Thai</td></tr> 390<tr><td colspan=2>Tibetan</td></tr> 391<tr><td colspan=2>Tifinagh</td></tr> 392<tr><td colspan=2>Tirhuta</td></tr> 393<tr><td colspan=2>Ugaritic</td></tr> 394<tr><td colspan=2>Vai</td></tr> 395<tr><td colspan=2>Wancho</td></tr> 396<tr><td colspan=2>Warang_Citi</td></tr> 397<tr><td colspan=2>Yezidi</td></tr> 398<tr><td colspan=2>Yi</td></tr> 399<tr><td colspan=2>Zanabazar_Square</td></tr> 400<tr><td></td></tr> 401<tr><td colspan=2><b>Vim character classes:</b></td></tr> 402<tr><td><code><font color=#808080>\i</font></code></td><td>identifier character <font size=-2>VIM</font></td></tr> 403<tr><td><code><font color=#808080>\I</font></code></td><td><code>\i</code> except digits <font size=-2>VIM</font></td></tr> 404<tr><td><code><font color=#808080>\k</font></code></td><td>keyword character <font size=-2>VIM</font></td></tr> 405<tr><td><code><font color=#808080>\K</font></code></td><td><code>\k</code> except digits <font size=-2>VIM</font></td></tr> 406<tr><td><code><font color=#808080>\f</font></code></td><td>file name character <font size=-2>VIM</font></td></tr> 407<tr><td><code><font color=#808080>\F</font></code></td><td><code>\f</code> except digits <font size=-2>VIM</font></td></tr> 408<tr><td><code><font color=#808080>\p</font></code></td><td>printable character <font size=-2>VIM</font></td></tr> 409<tr><td><code><font color=#808080>\P</font></code></td><td><code>\p</code> except digits <font size=-2>VIM</font></td></tr> 410<tr><td><code><font color=#808080>\s</font></code></td><td>whitespace character (≡ <code>[ \t]</code>) <font size=-2>VIM</font></td></tr> 411<tr><td><code><font color=#808080>\S</font></code></td><td>non-white space character (≡ <code>[^ \t]</code>) <font size=-2>VIM</font></td></tr> 412<tr><td><code>\d</code></td><td>digits (≡ <code>[0-9]</code>) <font size=-2>VIM</font></td></tr> 413<tr><td><code>\D</code></td><td>not <code>\d</code> <font size=-2>VIM</font></td></tr> 414<tr><td><code><font color=#808080>\x</font></code></td><td>hex digits (≡ <code>[0-9A-Fa-f]</code>) <font size=-2>VIM</font></td></tr> 415<tr><td><code><font color=#808080>\X</font></code></td><td>not <code>\x</code> <font size=-2>VIM</font></td></tr> 416<tr><td><code><font color=#808080>\o</font></code></td><td>octal digits (≡ <code>[0-7]</code>) <font size=-2>VIM</font></td></tr> 417<tr><td><code><font color=#808080>\O</font></code></td><td>not <code>\o</code> <font size=-2>VIM</font></td></tr> 418<tr><td><code>\w</code></td><td>word character <font size=-2>VIM</font></td></tr> 419<tr><td><code>\W</code></td><td>not <code>\w</code> <font size=-2>VIM</font></td></tr> 420<tr><td><code><font color=#808080>\h</font></code></td><td>head of word character <font size=-2>VIM</font></td></tr> 421<tr><td><code><font color=#808080>\H</font></code></td><td>not <code>\h</code> <font size=-2>VIM</font></td></tr> 422<tr><td><code><font color=#808080>\a</font></code></td><td>alphabetic <font size=-2>VIM</font></td></tr> 423<tr><td><code><font color=#808080>\A</font></code></td><td>not <code>\a</code> <font size=-2>VIM</font></td></tr> 424<tr><td><code><font color=#808080>\l</font></code></td><td>lowercase <font size=-2>VIM</font></td></tr> 425<tr><td><code><font color=#808080>\L</font></code></td><td>not lowercase <font size=-2>VIM</font></td></tr> 426<tr><td><code><font color=#808080>\u</font></code></td><td>uppercase <font size=-2>VIM</font></td></tr> 427<tr><td><code><font color=#808080>\U</font></code></td><td>not uppercase <font size=-2>VIM</font></td></tr> 428<tr><td><code><font color=#808080>\_x</font></code></td><td><code>\x</code> plus newline, for any <code>x</code> <font size=-2>VIM</font></td></tr> 429<tr><td></td></tr> 430<tr><td colspan=2><b>Vim flags:</b></td></tr> 431<tr><td><code><font color=#808080>\c</font></code></td><td>ignore case <font size=-2>VIM</font></td></tr> 432<tr><td><code><font color=#808080>\C</font></code></td><td>match case <font size=-2>VIM</font></td></tr> 433<tr><td><code><font color=#808080>\m</font></code></td><td>magic <font size=-2>VIM</font></td></tr> 434<tr><td><code><font color=#808080>\M</font></code></td><td>nomagic <font size=-2>VIM</font></td></tr> 435<tr><td><code><font color=#808080>\v</font></code></td><td>verymagic <font size=-2>VIM</font></td></tr> 436<tr><td><code><font color=#808080>\V</font></code></td><td>verynomagic <font size=-2>VIM</font></td></tr> 437<tr><td><code><font color=#808080>\Z</font></code></td><td>ignore differences in Unicode combining characters <font size=-2>VIM</font></td></tr> 438<tr><td></td></tr> 439<tr><td colspan=2><b>Magic:</b></td></tr> 440<tr><td><code><font color=#808080>(?{code})</font></code></td><td>arbitrary Perl code <font size=-2>PERL</font></td></tr> 441<tr><td><code><font color=#808080>(??{code})</font></code></td><td>postponed arbitrary Perl code <font size=-2>PERL</font></td></tr> 442<tr><td><code><font color=#808080>(?n)</font></code></td><td>recursive call to regexp capturing group <code>n</code> </td></tr> 443<tr><td><code><font color=#808080>(?+n)</font></code></td><td>recursive call to relative group <code>+n</code> </td></tr> 444<tr><td><code><font color=#808080>(?-n)</font></code></td><td>recursive call to relative group <code>-n</code> </td></tr> 445<tr><td><code><font color=#808080>(?C)</font></code></td><td>PCRE callout <font size=-2>PCRE</font></td></tr> 446<tr><td><code><font color=#808080>(?R)</font></code></td><td>recursive call to entire regexp (≡ <code>(?0)</code>) </td></tr> 447<tr><td><code><font color=#808080>(?&name)</font></code></td><td>recursive call to named group </td></tr> 448<tr><td><code><font color=#808080>(?P=name)</font></code></td><td>named backreference </td></tr> 449<tr><td><code><font color=#808080>(?P>name)</font></code></td><td>recursive call to named group </td></tr> 450<tr><td><code><font color=#808080>(?(cond)true|false)</font></code></td><td>conditional branch </td></tr> 451<tr><td><code><font color=#808080>(?(cond)true)</font></code></td><td>conditional branch </td></tr> 452<tr><td><code><font color=#808080>(*ACCEPT)</font></code></td><td>make regexps more like Prolog </td></tr> 453<tr><td><code><font color=#808080>(*COMMIT)</font></code></td><td></td></tr> 454<tr><td><code><font color=#808080>(*F)</font></code></td><td></td></tr> 455<tr><td><code><font color=#808080>(*FAIL)</font></code></td><td></td></tr> 456<tr><td><code><font color=#808080>(*MARK)</font></code></td><td></td></tr> 457<tr><td><code><font color=#808080>(*PRUNE)</font></code></td><td></td></tr> 458<tr><td><code><font color=#808080>(*SKIP)</font></code></td><td></td></tr> 459<tr><td><code><font color=#808080>(*THEN)</font></code></td><td></td></tr> 460<tr><td><code><font color=#808080>(*ANY)</font></code></td><td>set newline convention </td></tr> 461<tr><td><code><font color=#808080>(*ANYCRLF)</font></code></td><td></td></tr> 462<tr><td><code><font color=#808080>(*CR)</font></code></td><td></td></tr> 463<tr><td><code><font color=#808080>(*CRLF)</font></code></td><td></td></tr> 464<tr><td><code><font color=#808080>(*LF)</font></code></td><td></td></tr> 465<tr><td><code><font color=#808080>(*BSR_ANYCRLF)</font></code></td><td>set \R convention <font size=-2>PCRE</font></td></tr> 466<tr><td><code><font color=#808080>(*BSR_UNICODE)</font></code></td><td> <font size=-2>PCRE</font></td></tr> 467<tr><td></td></tr> 468</table> 469</body> 470</html> 471