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Fix an error for Layout/LineLength #9638

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merged 1 commit into from Mar 25, 2021

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@koic
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@koic koic commented Mar 25, 2021

This PR fixes the following infinite loop error for Layout/LineLength when over limit at right hand side of multiple assignment.

% cat .rubocop.yml
Layout/LineLength:
  Max: 40

% cat example.rb
a = fooooooooooooooooooooooooooooooooooooo, b

% bundle exec rubocop --only Layout/LineLength -a
(snip)

0 files inspected, 200 offenses detected, 200 offenses corrected
Infinite loop detected in /tmp/example.rb and caused by Layout/LineLength
/Users/koic/src/github.com/rubocop/rubocop/lib/rubocop/runner.rb:290:in
`block in iterate_until_no_changes'
/Users/koic/src/github.com/rubocop/rubocop/lib/rubocop/runner.rb:286:in
`loop'
/Users/koic/src/github.com/rubocop/rubocop/lib/rubocop/runner.rb:286:in
`iterate_until_no_changes'

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.
This PR fixes the following infinite loop error for `Layout/LineLength`
when over limit at right hand side of multiple assignment.

```console
% cat .rubocop.yml
Layout/LineLength:
  Max: 40

% cat example.rb
a = fooooooooooooooooooooooooooooooooooooo, b

% bundle exec rubocop --only Layout/LineLength -a
(snip)

0 files inspected, 200 offenses detected, 200 offenses corrected
Infinite loop detected in /tmp/example.rb and caused by Layout/LineLength
/Users/koic/src/github.com/rubocop/rubocop/lib/rubocop/runner.rb:290:in
`block in iterate_until_no_changes'
/Users/koic/src/github.com/rubocop/rubocop/lib/rubocop/runner.rb:286:in
`loop'
/Users/koic/src/github.com/rubocop/rubocop/lib/rubocop/runner.rb:286:in
`iterate_until_no_changes'
```
@bbatsov bbatsov merged commit 7ecc00f into rubocop:master Mar 25, 2021
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@bbatsov
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@bbatsov bbatsov commented Mar 25, 2021

Thanks!

@koic koic deleted the koic:fix_error_for_layout_line_length branch Mar 25, 2021
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