R Observatory: Metrics for rex version 1.2.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

rex

1.2.2

Friendly Regular Expressions

22packages depend

2.6Mdownloads / year

76.7%test coverage

8/13checks pass

Overview

About

Maintained by Kevin UsheyFirst published 2014-10-1410 releasesCRAN page ↗GitHub ↗

A friendly interface for the construction of regular expressions.

Install

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

install.packages("rex", 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("r-lib/rex")

Development version from r-lib/rex. 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-rex

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-rex

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-rex

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

Health

CRAN checks

5NOTE8OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc
NOTE r-devel-linux-x86_64-fedora-clang
NOTE r-devel-linux-x86_64-fedora-gcc
NOTE r-devel-windows-x86_64

Slowest check: 1.9 min · r-oldrel-macos-x86_64

Code health

Yes

Tests · ratio 1.30

76.7%

Coverage · measured lines

100%

Documentation · exports

1

Dependencies · direct

Check history

NOTE2026-07-16
11 OK · 2 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 235 wordsVignettesYes · dynamicpkgdown siteNoNEWSYes · 100% structuredCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 9%
References docs: 0%

Downloads

2.6M

CRAN downloads in the past year

Rank #214 · ~7K/day · ~212.8K/mo

Releases R versions

Daily download trend is not available in this view yet.

201.3K30 days

711.2K90 days

2.6M1 year

Compare downloads with other packages →

Also on39.4K r2u142 autocran97.1K conda_forge86 c2d4u

Repository

GitHub ↗ r-lib/rex

334Stars

28Forks

23Open issues

2Open PRs

1Releases

237Commits

11Contributors

237 commits · Last activity 2024-03-12 · 0% stars, 30d

Stars over time

2025-04-07 · 3322026-07-07 · 334

Repository practices

Upstream repositoryBeta

6 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/r-lib/rex on 2026-08-16.

Continuous integration (1)

GitHub Actions

CRAN release process (2)

cran-comments.mdrevdep/

Lint, format, editor (2)

lintrRStudio project

Coverage (1)

Codecov

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

Dependencies

Declared dependencies

12 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (1)

withr

LinkingTo (0)

none

Suggests (11)

covr dplyr ggplot2 Hmisc knitr magrittr rmarkdown roxygen2 rvest stringr testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

22direct

38indirect

RBaseX babelmixr2 covr lintr nlmixr2est roclang roxygen2md rxode2 todor OpenML artma bdpar box.linters dparser gramEvol mlr mlrCPO ore rhino serocalculator serodynamics table.express

Code & Tests

People & History

People (3)

Maintainer (1)

Kevin Ushey

Author, Maintainer

Authors (3)

Kevin Ushey

Author, Maintainer

Jim Hester

Author

Robert Krzyzanowski

Author · added in 1.0.1

Listed in earlier versions (1)

Kevin Ushey <kevinushey@gmail.com> [aut] Jim Hester <james.f.hester@gmail.com> [cre, aut]

no longer listed · 0.1.1 to 0.2.0

Package Timeline

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

R
R 4.6.0 released · 2026-04-24
1.2.2Latest
2026-03-28 · current release · diff ↗
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
1.2.1
2021-11-26 · diff ↗
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
1.2.0
2020-04-21 · diff ↗
R
R 3.6.0 released · 2019-04-26
R
R 3.5.0 released · 2018-04-23
1.1.2
2017-10-19 · diff ↗
R
R 3.4.0 released · 2017-04-21
1.1.1
2016-12-05 · diff ↗
R
R 3.3.0 released · 2016-05-03

Show 7 earlier events

1.0.1
2015-04-28 · diff ↗
R
R 3.2.0 released · 2015-04-16
0.2.0
2014-11-26 · diff ↗
0.1.2
2014-10-31 · diff ↗
0.1.1
2014-10-21 · diff ↗
0.1.0
2014-10-14
R
R 3.1.0 released · 2014-04-10

Package metadata

First published: 2014-10-14
Total releases: 10 / 12 yrs
License: MIT + file LICENSE OSI
Download size: 89 KB
Installed size: not tracked yet
With dependencies: not tracked yet

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("rex")

Format

Ushey, K., Hester, J., & Krzyzanowski, R. (2026). rex: Friendly Regular Expressions (Version 1.2.2) [Computer software]. https://doi.org/10.32614/CRAN.package.rex

This is what citation() produces when a package has no citation file of its own. If it prints something else, use that.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for rex version 1.2.2 [Data set]. HJJB, LLC. Data release v2026-08-18. https://doi.org/10.5281/zenodo.21843040

From data release v2026-08-18, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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