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== Practical use ==
* [[Python (programming language)|Python]] reference implementation [[CPython]] introduced a PEG parser in version 3.9 as an alternative to the [[LL parser|LL(1) parser]] and uses just PEG from version 3.10.<ref>{{Cite web |title=PEP 617 – New PEG parser for CPython {{!}} peps.python.org |url=https://peps.python.org/pep-0617/ |access-date=2023-01-16 |website=peps.python.org}}</ref>
* The [[Jq_(programming_language)#Parsing_Expression_Grammars|jq programming language]] uses a formalism closely related to PEG.
* The [[Lua (programming language)|Lua]] authors created [https://www.inf.puc-rio.br/~roberto/lpeg/ LPeg], a [[pattern-matching]] library that uses PEG instead of [[regular expressions]]<ref>{{cite journal |last1=Ierusalimschy |first1=Roberto |title=A text pattern‐matching tool based on Parsing Expression Grammars |journal=Software: Practice and Experience |date=10 March 2009 |volume=39 |issue=3 |pages=221–258 |doi=10.1002/spe.892 |url=https://onlinelibrary.wiley.com/doi/10.1002/spe.892 |language=en |issn=0038-0644}}</ref>, as well as the [https://www.inf.puc-rio.br/~roberto/lpeg/re.html re] module which implements a regular expression-like syntax utilizing the LPeg library<ref>{{cite web |last1=Ierusalimschy |first1=Roberto |title=LPeg.re - Regex syntax for LPEG |url=https://www.inf.puc-rio.br/~roberto/lpeg/re.html |website=www.inf.puc-rio.br}}</ref>.
== See also ==
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