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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 ]
As of 2010, the standard module is generally regarded as deprecated; [2] often recommended libraries are pcre (with full support for PCRE) and re (which is not as complete but claims better performance and provides frontends to popular syntaxes: PCRE, Perl, Posix, Emacs, shell globbing).
Starting in 1997, Philip Hazel developed PCRE (Perl Compatible Regular Expressions), which attempts to closely mimic Perl's regex functionality and is used by many modern tools including PHP and Apache HTTP Server. [20]
The regular expressions of PCRE are compatible with Perl's. Embedded source code does not constitute a "regular expression pattern". 70.20.145.231 19:57, 26 November 2005 (UTC) No, they're not entirely exactly compatible. Embedded Perl source code is considered part of the regular expression in Perl. PCRE will always do things that Perl can't ...
RE2 performs comparably to Perl Compatible Regular Expressions (PCRE). For certain regular expression operators like | (the operator for alternation or logical disjunction) it is superior to PCRE. Unlike PCRE, which supports features such as lookarounds, backreferences and recursion, RE2 is only able to recognize regular languages due to its ...
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PCRE—Perl Compatible Regular Expressions; PD—Public Domain; PDA—Personal Digital Assistant; PDF—Portable Document Format; PDH—Plesiochronous Digital Hierarchy; PDP—Programmed Data Processor; PE—Physical Extents; PE—Portable Executable; PERL—Practical Extraction and Reporting Language; PFA—Please Find Attachment; PG ...