re2

0.1.4

R Interface to Google RE2 (C++) Regular Expression Library

3packages depend

7.9Kdownloads / year

46.9%test coverage

12/13checks pass

Overview

About

Maintained by Girish PalyaFirst published 2021-05-035 releasesCRAN page ↗GitHub ↗

Pattern matching, extraction, replacement and other string processing operations using Google's RE2 https://github.com/google/re2 regular-expression engine. Consistent interface (similar to 'stringr'). RE2 uses finite-automata based techniques, and offers a fast and safe alternative to backtracking regular-expression engines like those used in 'stringr', 'stringi' and other PCRE implementations.

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("re2", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("girishji/re2")

Development version from girishji/re2. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-re2

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-re2

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-re2

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

1NOTE12OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-gcc

Slowest check: 4.7 min · r-devel-linux-x86_64-fedora-clang

Code health

Yes

Tests · ratio 5.65

46.9%

Coverage · measured lines

Dependencies · direct

Check history

NOTE2026-08-01
12 OK · 1 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-04-25
12 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
NOTE2026-04-22
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
11 OK · 2 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
12 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesYes · dynamicpkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: not tracked
Return-value docs: not tracked
References docs: 8%

Downloads

7.9K

CRAN downloads in the past year

Rank #9,804 · ~22/day · ~656/mo

Releases R versions

Daily download trend is not available in this view yet.

28330 days

1.1K90 days

7.9K1 year

Compare downloads with other packages →

Also on583 r2u4 autocran22 c2d4u

Repository

GitHub ↗ girishji/re2

27Stars

5Forks

0Open issues

0Open PRs

0Releases

56Commits

1Contributors

regexregexpregex-enginerre2

56 commits · Last activity 2025-01-19

Stars over time

2025-03-11 · 272026-07-07 · 27

Repository practices

Upstream repositoryBeta

1 development-tooling and community-health practice detected across 1 family in the upstream repository

Checks run against github.com/girishji/re2 on 2026-07-31.

Docs source (1)

README.Rmd

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

4 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (1)

Rcpp

LinkingTo (1)

Rcpp

Suggests (2)

knitr rmarkdown

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

3direct

0indirect

corporaexplorer atime nc

Code & Tests

People & History

People (3)

Maintainer (1)

Girish Palya

Author, Maintainer

Authors (1)

Girish Palya

Author, Maintainer

Contributors (2)

Google Inc.

Contributor, Copyright holder · added in 0.1.4

RE2 developers

Contributor · added in 0.1.4

Google Inc.

Contributor, Copyright holder · added in 0.1.4

Listed in earlier versions (2)

Google Inc. (RE2 library)

no longer listed · 0.1.0 to 0.1.3

RE2 developers (RE2 library)

no longer listed · 0.1.0 to 0.1.3

Package Timeline

5 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
0.1.4Latest
2025-01-19 · current release · diff ↗
R
R 4.4.0 released · 2024-04-24
0.1.3
2023-11-29 · diff ↗
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
0.1.2
2022-03-29 · diff ↗
unarchivedReturned to CRAN
2022-03-29
archivedRemoved from CRAN
2022-03-28
check problems were not corrected in time
R
R 4.1.0 released · 2021-05-18
0.1.1
2021-05-13 · diff ↗
0.1.0
2021-05-03
R
R 4.0.0 released · 2020-04-24

Package metadata

First published: 2021-05-03
Total releases: 5 / 5 yrs
License: MIT + file LICENSE OSI
Download size: 444 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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