This is a comparison of
regular expression
A regular expression (shortened as regex or regexp; sometimes referred to as rational expression) is a sequence of characters that specifies a search pattern in text. Usually such patterns are used by string-searching algorithms for "find" ...
engines.
Libraries
Languages
Language features
NOTE: An application using a library for regular expression support does not necessarily offer the full set of features of the library, e.g. GNU grep which uses PCRE does not offer lookahead support, though PCRE does.
Part 1
Part 2
API features
See also
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Comparison of parser generators
This is a list of notable lexer generators and parser generators for various language classes.
Regular languages
Regular languages are a category of languages (sometimes termed Chomsky Type 3) which can be matched by a state machine (more sp ...
References
External links
Regular Expression Flavor Comparison— Detailed comparison of the most popular regular expression flavors
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
{{DEFAULTSORT:Comparison Of Regular Expression Engines
Pattern matching
Regular expression engines
Regular expressions