Metacharacter
A metacharacter is a character that has a special meaning to a computer program, such as a shell interpreter or a regular expression (regex) engine. In POSIX extended regular expressions, there are 14 metacharacters that must be escaped (preceded by a backslash (\)) in order to drop their special meaning and be treated literally inside an expression: opening and closing square brackets ([ and ]); backslash (\); caret (^); dollar sign ($); period/full stop/dot (.); vertical bar/pipe symbol (|); question mark (?); asterisk (*); plus and minus signs (+ and -); opening and closing curly brackets/braces ({ and }); and opening and closing parentheses (( and )).
primaryTopic
Metacharacter
A metacharacter is a character that has a special meaning to a computer program, such as a shell interpreter or a regular expression (regex) engine. In POSIX extended regular expressions, there are 14 metacharacters that must be escaped (preceded by a backslash (\)) in order to drop their special meaning and be treated literally inside an expression: opening and closing square brackets ([ and ]); backslash (\); caret (^); dollar sign ($); period/full stop/dot (.); vertical bar/pipe symbol (|); question mark (?); asterisk (*); plus and minus signs (+ and -); opening and closing curly brackets/braces ({ and }); and opening and closing parentheses (( and )).
has abstract
A metacharacter is a character ...... sk will have special meanings.
@en
En informática, se denomina me ...... " o "Mara".
* Datos: Q1415908
@es
Metazeichen oder Funktionszeic ...... eln zur Maskierung vorgesehen.
@de
元字符(Metacharacter),指SHELL直譯器或正 ...... 花括号:"{"和"}"
* 开和闭 小括号:"("和")"
@zh
Wikipage page ID
page length (characters) of wiki page
Wikipage revision ID
998,182,608
Link from a Wikipage to another Wikipage
date
April 2019
@en
reason
definition and lead are only about regular expression metacharacters, but article is not
@en
wikiPageUsesTemplate
hypernym
comment
A metacharacter is a character ...... closing parentheses (( and )).
@en
En informática, se denomina me ...... " o "Mara".
* Datos: Q1415908
@es
Metazeichen oder Funktionszeic ...... eln zur Maskierung vorgesehen.
@de
元字符(Metacharacter),指SHELL直譯器或正 ...... 花括号:"{"和"}"
* 开和闭 小括号:"("和")"
@zh
label
Metacarácter
@es
Metacharacter
@en
Metazeichen
@de
元字符
@zh