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Unlike keyword searching, regex searching is by default case-sensitive, does not ignore punctuation, and operates directly on the page source (MediaWiki markup) rather than on the rendered contents of the page. To perform a regex search, use the ordinary search box with the syntax insource:/regex/ or intitle:/regex/.
Regular expressions are used in search engines, in search and replace dialogs of word processors and text editors, in text processing utilities such as sed and AWK, and in lexical analysis. Regular expressions are supported in many programming languages. Library implementations are often called an "engine", [4] [5] and many of these are ...
Oniguruma (鬼車) is a free and open-source regular expression library that supports a variety of character encodings, written by K. Kosako.The Ruby programming language, in version 1.9, as well as PHP's multi-byte string module (since PHP5), use Oniguruma as their regular expression engine. [2]
In the case of a web application, the programmer may use the same regular expression to validate input on both the client and the server side of the system. An attacker could inspect the client code, looking for evil regular expressions, and send crafted input directly to the web server in order to hang it.
Perl Compatible Regular Expressions (PCRE) is a library written in C, which implements a regular expression engine, inspired by the capabilities of the Perl programming language. Philip Hazel started writing PCRE in summer 1997. [ 3 ]
Each French person receives at birth a national identification number, the "numéro d'inscription au répertoire" (NIR or National Repertory registration), also called a "numéro de sécurité sociale" (or Social Security number). This INSEE number is composed of 13 digits + a two-digit key.
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The Social Security Administration has suggested that, if asked to provide their Social Security number, a citizen should ask which law requires its use. [31] In accordance with §7213 of the 9/11 Commission Implementation Act of 2004 and 20 CFR 422.103 , the number of replacement Social Security cards per person is generally limited to three ...