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Add new Lint/RedundantDirGlobSort cop#9301

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bbatsov merged 1 commit intorubocop:masterfrom
koic:add_new_lint_redundant_dir_glob_sort_cop
Dec 31, 2020
Merged

Add new Lint/RedundantDirGlobSort cop#9301
bbatsov merged 1 commit intorubocop:masterfrom
koic:add_new_lint_redundant_dir_glob_sort_cop

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@koic koic commented Dec 28, 2020

Sort globbed results by default in Ruby 3.0.
https://bugs.ruby-lang.org/issues/8709

This PR adds new Lint/RedundantDirGlobSort cop.
It checks for redundant sort method to Dir.glob and Dir[].

# bad
Dir.glob('./lib/**/*.rb').sort.each do |file|
end

Dir['./lib/**/*.rb'].sort.each do |file|
end

# good
Dir.glob('./lib/**/*.rb').each do |file|
end

Dir['./lib/**/*.rb'].each do |file|
end

# good - Respect intent if `sort` keyword option is specified.
Dir.glob('./lib/**/*.rb', sort: false).each do |file|
end

Related PR #9300.


Before submitting the PR make sure the following are checked:

  • The PR relates to only one subject with a clear title and description in grammatically correct, complete sentences.
  • Wrote good commit messages.
  • Commit message starts with [Fix #issue-number] (if the related issue exists).
  • Feature branch is up-to-date with master (if not - rebase it).
  • Squashed related commits together.
  • Added tests.
  • Ran bundle exec rake default. It executes all tests and runs RuboCop on its own code.
  • Added an entry (file) to the changelog folder named {change_type}_{change_description}.md if the new code introduces user-observable changes. See changelog entry format for details.

@koic koic force-pushed the add_new_lint_redundant_dir_glob_sort_cop branch from a4b38b2 to 3021748 Compare December 28, 2020 15:38
Sort globbed results by default in Ruby 3.0.
https://bugs.ruby-lang.org/issues/8709

This PR adds new `Lint/RedundantDirGlobSort` cop.
It checks for redundant `sort` method to `Dir.glob` and `Dir[]`.

```ruby
# bad
Dir.glob('./lib/**/*.rb').sort.each do |file|
end

Dir['./lib/**/*.rb'].sort.each do |file|
end

# good
Dir.glob('./lib/**/*.rb').each do |file|
end

Dir['./lib/**/*.rb'].each do |file|
end

# good - Respect intent if `sort` keyword option is specified.
Dir.glob('./lib/**/*.rb', sort: false).each do |file|
end
```

Related PR rubocop#9300.
@koic koic force-pushed the add_new_lint_redundant_dir_glob_sort_cop branch from 3021748 to adfea8c Compare December 29, 2020 02:23
@bbatsov bbatsov merged commit 8389cb8 into rubocop:master Dec 31, 2020
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bbatsov commented Dec 31, 2020

Nicely done!

@koic koic deleted the add_new_lint_redundant_dir_glob_sort_cop branch December 31, 2020 07:58
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2 participants