René's URL Explorer Experiment

Title: GitHub - raredd/regex: perl regex cheatsheet with examples in r

Open Graph Title: GitHub - raredd/regex: perl regex cheatsheet with examples in r

X Title: GitHub - raredd/regex: perl regex cheatsheet with examples in r

Description: perl regex cheatsheet with examples in r. Contribute to raredd/regex development by creating an account on GitHub.

Open Graph Description: perl regex cheatsheet with examples in r. Contribute to raredd/regex development by creating an account on GitHub.

X Description: perl regex cheatsheet with examples in r. Contribute to raredd/regex development by creating an account on GitHub.

Opengraph URL: https://github.com/raredd/regex

X: @github

direct link

Domain: patch-diff.githubusercontent.com

route-pattern	/:user_id/:repository
route-controller	files
route-action	disambiguate
fetch-nonce	v2:f44645d7-b84a-325d-9949-fb4e986e82f4
current-catalog-service-hash	f3abb0cc802f3d7b95fc8762b94bdcb13bf39634c40c357301c4aa1d67a256fb
request-id	C262:985FF:82A4A4:A82C05:6991F081
html-safe-nonce	a0af67c2a2e6f5dd71da7ede03d0cca682c3a19296f56fe37c8db72664452676
visitor-payload	eyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJDMjYyOjk4NUZGOjgyQTRBNDpBODJDMDU6Njk5MUYwODEiLCJ2aXNpdG9yX2lkIjoiNjg3NTMwMDE4NTEwODUwODgwMSIsInJlZ2lvbl9lZGdlIjoiaWFkIiwicmVnaW9uX3JlbmRlciI6ImlhZCJ9
visitor-hmac	ffa5daf11f5b595bca96d50d067db357377178859bf294149f294e33ad12597a
hovercard-subject-tag	repository:22552192
github-keyboard-shortcuts	repository,copilot
google-site-verification	Apib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-url	https://collector.github.com/github/collect
analytics-location	//
fb:app_id	1401488693436528
apple-itunes-app	app-id=1477376905, app-argument=https://github.com/raredd/regex
twitter:image	https://opengraph.githubassets.com/cb2db4a130e77e90d49dfd83f9d2c0b6b4bd08d9729e3f566d8b5d3a315c5dce/raredd/regex
twitter:card	summary_large_image
og:image	https://opengraph.githubassets.com/cb2db4a130e77e90d49dfd83f9d2c0b6b4bd08d9729e3f566d8b5d3a315c5dce/raredd/regex
og:image:alt	perl regex cheatsheet with examples in r. Contribute to raredd/regex development by creating an account on GitHub.
og:image:width	1200
og:image:height	600
og:site_name	GitHub
og:type	object
hostname	github.com
expected-hostname	github.com
None	42c603b9d642c4a9065a51770f75e5e27132fef0e858607f5c9cb7e422831a7b
turbo-cache-control	no-preview
go-import	github.com/raredd/regex git https://github.com/raredd/regex.git
octolytics-dimension-user_id	6332718
octolytics-dimension-user_login	raredd
octolytics-dimension-repository_id	22552192
octolytics-dimension-repository_nwo	raredd/regex
octolytics-dimension-repository_public	true
octolytics-dimension-repository_is_fork	false
octolytics-dimension-repository_network_root_id	22552192
octolytics-dimension-repository_network_root_nwo	raredd/regex
turbo-body-classes	logged-out env-production page-responsive
disable-turbo	false
browser-stats-url	https://api.github.com/_private/browser/stats
browser-errors-url	https://api.github.com/_private/browser/errors
release	848bc6032dcc93a9a7301dcc3f379a72ba13b96e
ui-target	full
theme-color	#1e2327
color-scheme	light dark

Links:

Skip to content	https://patch-diff.githubusercontent.com/raredd/regex#start-of-content
	https://patch-diff.githubusercontent.com/
Sign in	https://patch-diff.githubusercontent.com/login?return_to=https%3A%2F%2Fgithub.com%2Fraredd%2Fregex
GitHub CopilotWrite better code with AI	https://github.com/features/copilot
GitHub SparkBuild and deploy intelligent apps	https://github.com/features/spark
GitHub ModelsManage and compare prompts	https://github.com/features/models
MCP RegistryNewIntegrate external tools	https://github.com/mcp
ActionsAutomate any workflow	https://github.com/features/actions
CodespacesInstant dev environments	https://github.com/features/codespaces
IssuesPlan and track work	https://github.com/features/issues
Code ReviewManage code changes	https://github.com/features/code-review
GitHub Advanced SecurityFind and fix vulnerabilities	https://github.com/security/advanced-security
Code securitySecure your code as you build	https://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they start	https://github.com/security/advanced-security/secret-protection
Why GitHub	https://github.com/why-github
Documentation	https://docs.github.com
Blog	https://github.blog
Changelog	https://github.blog/changelog
Marketplace	https://github.com/marketplace
View all features	https://github.com/features
Enterprises	https://github.com/enterprise
Small and medium teams	https://github.com/team
Startups	https://github.com/enterprise/startups
Nonprofits	https://github.com/solutions/industry/nonprofits
App Modernization	https://github.com/solutions/use-case/app-modernization
DevSecOps	https://github.com/solutions/use-case/devsecops
DevOps	https://github.com/solutions/use-case/devops
CI/CD	https://github.com/solutions/use-case/ci-cd
View all use cases	https://github.com/solutions/use-case
Healthcare	https://github.com/solutions/industry/healthcare
Financial services	https://github.com/solutions/industry/financial-services
Manufacturing	https://github.com/solutions/industry/manufacturing
Government	https://github.com/solutions/industry/government
View all industries	https://github.com/solutions/industry
View all solutions	https://github.com/solutions
AI	https://github.com/resources/articles?topic=ai
Software Development	https://github.com/resources/articles?topic=software-development
DevOps	https://github.com/resources/articles?topic=devops
Security	https://github.com/resources/articles?topic=security
View all topics	https://github.com/resources/articles
Customer stories	https://github.com/customer-stories
Events & webinars	https://github.com/resources/events
Ebooks & reports	https://github.com/resources/whitepapers
Business insights	https://github.com/solutions/executive-insights
GitHub Skills	https://skills.github.com
Documentation	https://docs.github.com
Customer support	https://support.github.com
Community forum	https://github.com/orgs/community/discussions
Trust center	https://github.com/trust-center
Partners	https://github.com/partners
GitHub SponsorsFund open source developers	https://github.com/sponsors
Security Lab	https://securitylab.github.com
Maintainer Community	https://maintainers.github.com
Accelerator	https://github.com/accelerator
Archive Program	https://archiveprogram.github.com
Topics	https://github.com/topics
Trending	https://github.com/trending
Collections	https://github.com/collections
Enterprise platformAI-powered developer platform	https://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security features	https://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI features	https://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 support	https://github.com/premium-support
Pricing	https://github.com/pricing
Search syntax tips	https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentation	https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in	https://patch-diff.githubusercontent.com/login?return_to=https%3A%2F%2Fgithub.com%2Fraredd%2Fregex
Sign up	https://patch-diff.githubusercontent.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E&source=header-repo&source_repo=raredd%2Fregex
Reload	https://patch-diff.githubusercontent.com/raredd/regex
Reload	https://patch-diff.githubusercontent.com/raredd/regex
Reload	https://patch-diff.githubusercontent.com/raredd/regex
raredd	https://patch-diff.githubusercontent.com/raredd
regex	https://patch-diff.githubusercontent.com/raredd/regex
Notifications	https://patch-diff.githubusercontent.com/login?return_to=%2Fraredd%2Fregex
Fork 6	https://patch-diff.githubusercontent.com/login?return_to=%2Fraredd%2Fregex
Star 18	https://patch-diff.githubusercontent.com/login?return_to=%2Fraredd%2Fregex
18 stars	https://patch-diff.githubusercontent.com/raredd/regex/stargazers
6 forks	https://patch-diff.githubusercontent.com/raredd/regex/forks
Branches	https://patch-diff.githubusercontent.com/raredd/regex/branches
Tags	https://patch-diff.githubusercontent.com/raredd/regex/tags
Activity	https://patch-diff.githubusercontent.com/raredd/regex/activity
Star	https://patch-diff.githubusercontent.com/login?return_to=%2Fraredd%2Fregex
Notifications	https://patch-diff.githubusercontent.com/login?return_to=%2Fraredd%2Fregex
Code	https://patch-diff.githubusercontent.com/raredd/regex
Issues 0	https://patch-diff.githubusercontent.com/raredd/regex/issues
Pull requests 0	https://patch-diff.githubusercontent.com/raredd/regex/pulls
Actions	https://patch-diff.githubusercontent.com/raredd/regex/actions
Projects 0	https://patch-diff.githubusercontent.com/raredd/regex/projects
Wiki	https://patch-diff.githubusercontent.com/raredd/regex/wiki
Security 0	https://patch-diff.githubusercontent.com/raredd/regex/security
Insights	https://patch-diff.githubusercontent.com/raredd/regex/pulse
Code	https://patch-diff.githubusercontent.com/raredd/regex
Issues	https://patch-diff.githubusercontent.com/raredd/regex/issues
Pull requests	https://patch-diff.githubusercontent.com/raredd/regex/pulls
Actions	https://patch-diff.githubusercontent.com/raredd/regex/actions
Projects	https://patch-diff.githubusercontent.com/raredd/regex/projects
Wiki	https://patch-diff.githubusercontent.com/raredd/regex/wiki
Security	https://patch-diff.githubusercontent.com/raredd/regex/security
Insights	https://patch-diff.githubusercontent.com/raredd/regex/pulse
Branches	https://patch-diff.githubusercontent.com/raredd/regex/branches
Tags	https://patch-diff.githubusercontent.com/raredd/regex/tags
	https://patch-diff.githubusercontent.com/raredd/regex/branches
	https://patch-diff.githubusercontent.com/raredd/regex/tags
37 Commits	https://patch-diff.githubusercontent.com/raredd/regex/commits/master/
	https://patch-diff.githubusercontent.com/raredd/regex/commits/master/
img	https://patch-diff.githubusercontent.com/raredd/regex/tree/master/img
img	https://patch-diff.githubusercontent.com/raredd/regex/tree/master/img
.gitignore	https://patch-diff.githubusercontent.com/raredd/regex/blob/master/.gitignore
.gitignore	https://patch-diff.githubusercontent.com/raredd/regex/blob/master/.gitignore
README.Rmd	https://patch-diff.githubusercontent.com/raredd/regex/blob/master/README.Rmd
README.Rmd	https://patch-diff.githubusercontent.com/raredd/regex/blob/master/README.Rmd
README.md	https://patch-diff.githubusercontent.com/raredd/regex/blob/master/README.md
README.md	https://patch-diff.githubusercontent.com/raredd/regex/blob/master/README.md
README	https://patch-diff.githubusercontent.com/raredd/regex
	https://patch-diff.githubusercontent.com/raredd/regex#regex-in-r-cheatsheet
Other resources	https://patch-diff.githubusercontent.com/raredd/regex#other-resources
References	https://patch-diff.githubusercontent.com/raredd/regex#references
Basic regex	https://patch-diff.githubusercontent.com/raredd/regex#basic-regex
Specific characters	https://patch-diff.githubusercontent.com/raredd/regex#specific-characters
Quantifiers	https://patch-diff.githubusercontent.com/raredd/regex#quantifiers
Metacharacters	https://patch-diff.githubusercontent.com/raredd/regex#metacharacters
Character class shortcuts	https://patch-diff.githubusercontent.com/raredd/regex#character-class-shortcuts
Anchors	https://patch-diff.githubusercontent.com/raredd/regex#anchors
Look-ahead and look-behind	https://patch-diff.githubusercontent.com/raredd/regex#look-ahead-and-look-behind
Additional regex things	https://patch-diff.githubusercontent.com/raredd/regex#additional-regex-things
Metaquote and case translations	https://patch-diff.githubusercontent.com/raredd/regex#metaquote-and-case-translations
Special variables	https://patch-diff.githubusercontent.com/raredd/regex#special-variables
Modifiers	https://patch-diff.githubusercontent.com/raredd/regex#modifiers
Binding operators	https://patch-diff.githubusercontent.com/raredd/regex#binding-operators
Function for captures	https://patch-diff.githubusercontent.com/raredd/regex#function-for-captures
Examples	https://patch-diff.githubusercontent.com/raredd/regex#examples
Trimming whitespace	https://patch-diff.githubusercontent.com/raredd/regex#trimming-whitespace
Find the last occurrence of a string	https://patch-diff.githubusercontent.com/raredd/regex#find-the-last-occurrence-of-a-string
Capitalize the first letter of each word	https://patch-diff.githubusercontent.com/raredd/regex#capitalize-the-first-letter-of-each-word
Replacing all or parts of a string	https://patch-diff.githubusercontent.com/raredd/regex#replacing-all-or-parts-of-a-string
Inserting a character between two matches	https://patch-diff.githubusercontent.com/raredd/regex#inserting-a-character-between-two-matches
Matching a pattern that doesn’t include another pattern	https://patch-diff.githubusercontent.com/raredd/regex#matching-a-pattern-that-doesnt-include-another-pattern
Greed	https://patch-diff.githubusercontent.com/raredd/regex#greed
Extracting from between parentheses (or other characters)	https://patch-diff.githubusercontent.com/raredd/regex#extracting-from-between-parentheses-or-other-characters
Nesting (look-arounds inside of other look-arounds)	https://patch-diff.githubusercontent.com/raredd/regex#nesting-look-arounds-inside-of-other-look-arounds
Capitalizing every first word of every sentence	https://patch-diff.githubusercontent.com/raredd/regex#capitalizing-every-first-word-of-every-sentence
Capturing a word before (or after) a keyword	https://patch-diff.githubusercontent.com/raredd/regex#capturing-a-word-before-or-after-a-keyword
Extracting time formats from strings	https://patch-diff.githubusercontent.com/raredd/regex#extracting-time-formats-from-strings
Using \K and inserting spaces between words	https://patch-diff.githubusercontent.com/raredd/regex#using-k-and-inserting-spaces-between-words
Removing words with repeating letters	https://patch-diff.githubusercontent.com/raredd/regex#removing-words-with-repeating-letters
(PRUNE), (SKIP), (*FAIL), (?!)	https://patch-diff.githubusercontent.com/raredd/regex#prune-skip-fail
Extract the next word after a keyword	https://patch-diff.githubusercontent.com/raredd/regex#extract-the-next-word-after-a-keyword
Multiple condition matching	https://patch-diff.githubusercontent.com/raredd/regex#multiple-condition-matching
Remove contents around characters	https://patch-diff.githubusercontent.com/raredd/regex#remove-contents-around-characters
Split on whitespace except when inside parens	https://patch-diff.githubusercontent.com/raredd/regex#split-on-whitespace-except-when-inside-parens
Prime numbers	https://patch-diff.githubusercontent.com/raredd/regex#prime-numbers
\K, (SKIP), (FAIL) revisited	https://patch-diff.githubusercontent.com/raredd/regex#k-skip-fail-revisited
Branch reset	https://patch-diff.githubusercontent.com/raredd/regex#branch-reset
Matching valid month/day strings - non-capturing vs branch reset groups	https://patch-diff.githubusercontent.com/raredd/regex#matching-valid-monthday-strings---non-capturing-vs-branch-reset-groups
Capture items from a list	https://patch-diff.githubusercontent.com/raredd/regex#capture-items-from-a-list
Nested parens	https://patch-diff.githubusercontent.com/raredd/regex#nested-parens
	https://patch-diff.githubusercontent.com/raredd/regex#other-resources
Regex 101	https://www.regex101.com
Regex tester	http://regexpal.com
ReGeX cRoSsWoRdS!	http://regexcrossword.com
regex golf!	http://regex.alf.nu
Text explainer	http://rick.measham.id.au/paste/explain.pl?regex=%28%3F%3C%3Dfoo%29%5Cs%2Afoo%5BA-Z%5D%5Cd%7B2%2C3%7D
Explainer 1 (with flavors)	https://www.debuggex.com
Explainer 2 (javascript)	http://www.regexper.com
	https://patch-diff.githubusercontent.com/raredd/regex#references
general perl regex	https://patch-diff.githubusercontent.com/raredd/regex#www.erudil.com/preqr.pdf
	http://xkcd.com/1171/
	http://xkcd.com/208/
	http://xkcd.com/1313/
	https://patch-diff.githubusercontent.com/raredd/regex#basic-regex
	https://patch-diff.githubusercontent.com/raredd/regex#specific-characters
	https://patch-diff.githubusercontent.com/raredd/regex#quantifiers
	https://patch-diff.githubusercontent.com/raredd/regex#metacharacters
	https://patch-diff.githubusercontent.com/raredd/regex#character-class-shortcuts
	https://patch-diff.githubusercontent.com/raredd/regex#anchors
	https://patch-diff.githubusercontent.com/raredd/regex#look-ahead-and-look-behind
	https://patch-diff.githubusercontent.com/raredd/regex#additional-regex-things
	https://patch-diff.githubusercontent.com/raredd/regex#metaquote-and-case-translations
	https://patch-diff.githubusercontent.com/raredd/regex#special-variables
	https://patch-diff.githubusercontent.com/raredd/regex#modifiers
	https://patch-diff.githubusercontent.com/raredd/regex#binding-operators
	https://patch-diff.githubusercontent.com/raredd/regex#function-for-captures
helper function	https://github.com/raredd/rawr/blob/master/R/utils.R#L1304:L1355
	https://patch-diff.githubusercontent.com/raredd/regex#examples
	https://patch-diff.githubusercontent.com/raredd/regex#trimming-whitespace
	https://patch-diff.githubusercontent.com/raredd/regex#find-the-last-occurrence-of-a-string
	https://patch-diff.githubusercontent.com/raredd/regex#capitalize-the-first-letter-of-each-word
	https://patch-diff.githubusercontent.com/raredd/regex#replacing-all-or-parts-of-a-string
	https://patch-diff.githubusercontent.com/raredd/regex#inserting-a-character-between-two-matches
	https://patch-diff.githubusercontent.com/raredd/regex#matching-a-pattern-that-doesnt-include-another-pattern
	https://patch-diff.githubusercontent.com/raredd/regex#greed
	https://patch-diff.githubusercontent.com/raredd/regex#extracting-from-between-parentheses-or-other-characters
	https://patch-diff.githubusercontent.com/raredd/regex#nesting-look-arounds-inside-of-other-look-arounds
	https://patch-diff.githubusercontent.com/raredd/regex#capitalizing-every-first-word-of-every-sentence
	https://patch-diff.githubusercontent.com/raredd/regex#capturing-a-word-before-or-after-a-keyword
	https://patch-diff.githubusercontent.com/raredd/regex#extracting-time-formats-from-strings
	https://patch-diff.githubusercontent.com/raredd/regex#using-k-and-inserting-spaces-between-words
	https://patch-diff.githubusercontent.com/raredd/regex#removing-words-with-repeating-letters
	https://patch-diff.githubusercontent.com/raredd/regex#prune-skip-fail-
See also	https://regex101.com/r/hS1rN1/1
	https://patch-diff.githubusercontent.com/raredd/regex#extract-the-next-word-after-a-keyword
	https://patch-diff.githubusercontent.com/raredd/regex#multiple-condition-matching
	https://patch-diff.githubusercontent.com/raredd/regex#remove-contents-around-characters
	https://patch-diff.githubusercontent.com/raredd/regex#split-on-whitespace-except-when-inside-parens
	https://patch-diff.githubusercontent.com/raredd/regex#prime-numbers
	https://patch-diff.githubusercontent.com/raredd/regex#k-skip-fail-revisited
http://stackoverflow.com/questions/41924971/why-does-k-appear-to-consume-a-character-in-base-rs-gsub	http://stackoverflow.com/questions/41924971/why-does-k-appear-to-consume-a-character-in-base-rs-gsub
	https://patch-diff.githubusercontent.com/raredd/regex#branch-reset
	https://patch-diff.githubusercontent.com/raredd/regex#matching-valid-monthday-strings---non-capturing-vs-branch-reset-groups
	https://patch-diff.githubusercontent.com/raredd/regex#capture-items-from-a-list
	https://patch-diff.githubusercontent.com/raredd/regex#nested-parens
Readme	https://patch-diff.githubusercontent.com/raredd/regex#readme-ov-file
Please reload this page	https://patch-diff.githubusercontent.com/raredd/regex
Activity	https://patch-diff.githubusercontent.com/raredd/regex/activity
18 stars	https://patch-diff.githubusercontent.com/raredd/regex/stargazers
1 watching	https://patch-diff.githubusercontent.com/raredd/regex/watchers
6 forks	https://patch-diff.githubusercontent.com/raredd/regex/forks
Report repository	https://patch-diff.githubusercontent.com/contact/report-content?content_url=https%3A%2F%2Fgithub.com%2Fraredd%2Fregex&report=raredd+%28user%29
Releases	https://patch-diff.githubusercontent.com/raredd/regex/releases
Packages 0	https://patch-diff.githubusercontent.com/users/raredd/packages?repo_name=regex
	https://github.com
Terms	https://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacy	https://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Security	https://github.com/security
Status	https://www.githubstatus.com/
Community	https://github.community/
Docs	https://docs.github.com/
Contact	https://support.github.com?tags=dotcom-footer

Viewport: width=device-width

URLs of crawlers that visited me.