rubocop/ruby-style-guide

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A community-driven Ruby coding style guide

Stars: 16.5k
Forks: 3.3k
Open beginner issues: 0
Indexed issues: 58

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License: No license data
Last GitHub push: Jul 20, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted
PR merge metrics: No merged PRs in 30d

Beginner friendly Everything

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58 open issues indexed

If the arguments of a method call span more than one line, only allow one argument per line Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

rubocop/ruby-style-guide#968 · 2 comments · Opened Sep 18, 2025
New cop for surrounding multiline code blocks by empty lines Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

rubocop/ruby-style-guide#961 · 2 comments · Opened Jun 7, 2025
Discourage the use of writer methods with rescued exceptions Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

rubocop/ruby-style-guide#957 · Opened Dec 16, 2024
Style guide: misleading description for "Slicing with Ranges" Open

Difficulty 2/5 1-3 hours Newbie friendliness 48/100

rubocop/ruby-style-guide#953 · Opened Nov 21, 2024
DIscourage rescue error message checking Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

rubocop/ruby-style-guide#951 · 1 comment · Opened Oct 17, 2024
[idea?] Using ternary with array push operator Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

rubocop/ruby-style-guide#945 · Opened Aug 26, 2024
[Idea] Write "good" before "bad" examples Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

rubocop/ruby-style-guide#915 · 2 comments · Opened Feb 16, 2023
Enforce no parentheses for `include`, `extend`, etc? Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

rubocop/ruby-style-guide#914 · Opened Jan 17, 2023
The '%w' and '%i' syntax for arrays is just a bad idea Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rubocop/ruby-style-guide#908 · 11 comments · 11 reactions · Opened Nov 14, 2022
Is there a typo in the Suppressing Exceptions section? Open

Difficulty 1/5 Under an hour Newbie friendliness 35/100

rubocop/ruby-style-guide#887 · 4 comments · Opened Oct 6, 2021
Numbered parameters Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rubocop/ruby-style-guide#885 · 2 comments · 1 reaction · Opened Sep 20, 2021
Prefer `grep` and `grep_v` to `select`/`reject` that does a regexp match (Ruby 3+) Open

Difficulty 2/5 1-3 hours Newbie friendliness 65/100

rubocop/ruby-style-guide#884 · 3 reactions · Opened Sep 15, 2021
Usage of do...end block syntax in conditionals Open

Help Wanted New Rule

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rubocop/ruby-style-guide#859 · 1 comment · 1 reaction · Opened Jan 6, 2021
`extend`ing objects at runtime Open

Approved

Difficulty 5/5 Over a week Newbie friendliness 20/100

rubocop/ruby-style-guide#846 · 2 comments · Opened Oct 10, 2020
File naming with acronyms Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

rubocop/ruby-style-guide#842 · 3 comments · Opened Sep 14, 2020
New exception classes Open

Approved

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

rubocop/ruby-style-guide#837 · 1 comment · Opened Aug 11, 2020
Empty line around nesting blocks of the same indentation Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rubocop/ruby-style-guide#823 · 3 comments · 4 reactions · Opened Jul 2, 2020
`alias_method` should be preferred to `alias` Open

Approved

rubocop/ruby-style-guide#821 · 4 comments · 15 reactions · 1 assignee · Opened Jun 13, 2020
Recommend calling super in initialize Open

Approved

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rubocop/ruby-style-guide#809 · 12 comments · Opened Mar 27, 2020
Avoiding use of class references built via strings/`constantize` Open

Approved

Difficulty 5/5 Over a week Newbie friendliness 20/100

rubocop/ruby-style-guide#806 · 5 comments · Opened Feb 28, 2020
Prefer `drop` over `slice` (or `shift`) to retrieve all but the first array element Open

New Rule

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

rubocop/ruby-style-guide#794 · 4 comments · 1 reaction · Opened Feb 27, 2020
Revise "No Braces Options Hash" rule Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

rubocop/ruby-style-guide#788 · 3 reactions · Opened Jan 13, 2020
Use `#fetch` for arrays? Open

New Rule

Difficulty 5/5 Over a week Newbie friendliness 25/100

rubocop/ruby-style-guide#781 · 3 reactions · Opened Nov 17, 2019
Sugesstion: method name should make clear how many results are expected Open

New Rule

Difficulty 5/5 Over a week Newbie friendliness 25/100

rubocop/ruby-style-guide#753 · 1 comment · 2 reactions · Opened Jun 12, 2019
`X = Struct.new(:x) do` is bad Open

Approved

Difficulty 5/5 Over a week Newbie friendliness 25/100

rubocop/ruby-style-guide#744 · 1 comment · 2 reactions · Opened Apr 25, 2019
style guide doesn't follow Style/RescueStandardError Open

New Rule

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rubocop/ruby-style-guide#719 · 2 comments · Opened May 29, 2018
Recommendation for a comment that contains a very long url Open

Approved Existing Rule

Difficulty 3/5 1-2 days Newbie friendliness 42/100

rubocop/ruby-style-guide#712 · 5 comments · Opened Apr 23, 2018
Using the safe navigation operator with other operators? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rubocop/ruby-style-guide#705 · 2 comments · Opened Feb 16, 2018
assignment in conditional ternary Open

New Rule

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

rubocop/ruby-style-guide#704 · 5 comments · Opened Feb 16, 2018
Favor standard lib exceptions over new classes needs clarification Open

Approved Existing Rule

Difficulty 1/5 Under an hour Newbie friendliness 45/100

rubocop/ruby-style-guide#690 · 1 comment · 2 reactions · Opened Dec 9, 2017
Ternary branch text seems too strong Open

Approved Existing Rule

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

rubocop/ruby-style-guide#686 · 1 comment · Opened Dec 3, 2017
Passing objectified methods to iterators via &-syntax instead of code blocks Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rubocop/ruby-style-guide#683 · 8 comments · 1 reaction · Opened Nov 9, 2017
formatting multiline boolean expressions Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rubocop/ruby-style-guide#668 · 5 comments · 3 reactions · Opened Jul 20, 2017
Additional thoughts on `self` Open

Approved Existing Rule

Difficulty 5/5 Over a week Newbie friendliness 30/100

rubocop/ruby-style-guide#666 · 2 comments · 1 reaction · Opened Jul 15, 2017
Validity of single line while/until rule Open

Approved Existing Rule

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

rubocop/ruby-style-guide#634 · 2 comments · Opened Feb 14, 2017
Parameter Ordering Open

Approved New Rule

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rubocop/ruby-style-guide#632 · 10 comments · 1 reaction · Opened Feb 9, 2017
Discussion: the `private def` idiom. Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rubocop/ruby-style-guide#618 · 15 comments · 14 reactions · Opened Jan 13, 2017
No rule for space after stab Open

Approved New Rule

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

rubocop/ruby-style-guide#603 · 6 comments · 3 reactions · Opened Oct 6, 2016
About the code samples for "Avoid use of nested conditionals for flow of control" Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

rubocop/ruby-style-guide#602 · 7 comments · 3 reactions · Opened Oct 1, 2016
Conflict in a DSL style Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rubocop/ruby-style-guide#558 · 4 comments · 2 reactions · Opened Apr 11, 2016
`extend self` and `module_function` are not the same Open

Difficulty 2/5 1-3 hours Newbie friendliness 25/100

rubocop/ruby-style-guide#556 · 35 comments · 24 reactions · Opened Apr 8, 2016
Style/BlockDelimiters breaks natural language of rspec matchers Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rubocop/ruby-style-guide#522 · 10 comments · Opened Dec 30, 2015
Mark every rules with levels of requirements. Open

Approved Existing Rule

Difficulty 5/5 Over a week Newbie friendliness 25/100

rubocop/ruby-style-guide#521 · 1 comment · 1 reaction · Opened Dec 27, 2015
Multi-line parameters(arguments) with multiline paraemetrs Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

rubocop/ruby-style-guide#497 · 5 comments · Opened Nov 3, 2015
Single- vs multiline lambdas Open

Existing Rule

Difficulty 5/5 Over a week Newbie friendliness 35/100

rubocop/ruby-style-guide#479 · 9 comments · 23 reactions · Opened Sep 8, 2015
what to do when if conditions too long? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rubocop/ruby-style-guide#476 · 13 comments · 21 reactions · Opened Aug 25, 2015
NotImplementedError should be prefered for abstract definitions Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

rubocop/ruby-style-guide#458 · 10 comments · Opened Jul 16, 2015
Unspecified Style point: obj.is_a? vs obj.class == Class Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

rubocop/ruby-style-guide#416 · 8 comments · Opened Feb 18, 2015
Hanging Indentation on methods Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

rubocop/ruby-style-guide#359 · 15 comments · 4 reactions · Opened Sep 3, 2014
Spooky variable declaration Open

Approved New Rule

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

rubocop/ruby-style-guide#358 · 8 comments · 1 reaction · Opened Sep 3, 2014

rubocop/ruby-style-guide

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