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RE2 is a software library which implements a regular expression engine. It uses finite-state machines, in contrast to most other regular expression libraries. RE2 supports a C++ interface. RE2 was implemented by Google and Google uses RE2 for Google products. [3]
Sam is a multi-file text editor based on structural regular expressions.It was originally designed in the early 1980s at Bell Labs by Rob Pike with the help of Ken Thompson and other Unix developers for the Blit windowing terminal running on v9 Unix; [1] it was later ported to other systems.
PyAutoWikiBrowser (PyAWB) is an editing assist tool for MediaWiki similar to AWB, but since it is written in Python, it is intended to be cross-platform. Currently it is under development, but it is available for testing as a command line tool. While in beta please restrict editing to your own userspace, or preferably, sign up at Test Wiki and ...
Regular Expression Flavor Comparison – Detailed comparison of the most popular regular expression flavors; Regexp Syntax Summary; Online Regular Expression Testing – with support for Java, JavaScript, .Net, PHP, Python and Ruby; Implementing Regular Expressions – series of articles by Russ Cox, author of RE2; Regular Expression Engines
Scintilla's regular expression library can also be replaced or avoided with direct buffer access. Currently, Scintilla has experimental support for right-to-left languages. [4] Scinterm is a version of Scintilla for the curses text user interface. It is written by the developer of the Textadept editor.
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]
A regular expression (shortened as regex or regexp), [1] sometimes referred to as rational expression, [2] [3] is a sequence of characters that specifies a match pattern in text. Usually such patterns are used by string-searching algorithms for "find" or "find and replace" operations on strings , or for input validation .
Regular languages are a category of languages (sometimes termed Chomsky Type 3) which can be matched by a state machine (more specifically, by a deterministic finite automaton or a nondeterministic finite automaton) constructed from a regular expression. In particular, a regular language can match constructs like "A follows B", "Either A or B ...