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class Foo; bar do will crash Metrics/BlockLength #12873

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rellampec opened this issue Apr 29, 2024 · 2 comments · Fixed by #12874
Closed

class Foo; bar do will crash Metrics/BlockLength #12873

rellampec opened this issue Apr 29, 2024 · 2 comments · Fixed by #12874

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@rellampec
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rellampec commented Apr 29, 2024 •
edited
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Running rubocop on Windows 11 against a file named (rubocop_fails.rb) with the content below:

class Foo
  bar do

    one_line
    one_line
    one_line
    one_line
    one_line
  end
end

The .rubocop.yml file (in the same folder) contains this:

AllCops:
  TargetRubyVersion: 2.7.2
  NewCops: enable

Metrics/BlockLength:
  CountAsOne: [config]
  Max: 5

Expected behavior

Rubocop should just say that the block is too long

Actual behavior

It displays the results of some cops an when inspecting Metrics/BlockLength fails with error:

1 error occurred:
An error occurred while Metrics/BlockLength cop was inspecting C:/test/rubocop_fails.rb:2:2.

Full result:

For C:/test: configuration from C:/test/.rubocop.yml
Default configuration from C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/config/default.yml
Inspecting 1 file
Scanning C:/test/rubocop_fails.rb
An error occurred while Metrics/BlockLength cop was inspecting C:/test/rubocop_fails.rb:2:2.
Unknown foldable type: :config. Valid foldable types are: array, hash, heredoc, send, csend.
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/metrics/utils/code_length_calculator.rb:54:in `block in build_foldable_checks'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/metrics/utils/code_length_calculator.rb:43:in `map'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/metrics/utils/code_length_calculator.rb:43:in `build_foldable_checks'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/metrics/utils/code_length_calculator.rb:20:in `initialize'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/mixin/code_length.rb:50:in `new'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/mixin/code_length.rb:50:in `build_code_length_calculator'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/mixin/code_length.rb:35:in `check_code_length'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/metrics/block_length.rb:56:in `on_block'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/commissioner.rb:107:in `public_send'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/commissioner.rb:107:in `block (2 levels) in trigger_responding_cops'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/commissioner.rb:171:in `with_cop_error_handling'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/commissioner.rb:106:in `block in trigger_responding_cops'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/commissioner.rb:105:in `each'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/commissioner.rb:105:in `trigger_responding_cops'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/commissioner.rb:69:in `on_block'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-ast-1.31.2/lib/rubocop/ast/traversal.rb:154:in `on_class'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/commissioner.rb:71:in `on_class'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-ast-1.31.2/lib/rubocop/ast/traversal.rb:20:in `walk'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/commissioner.rb:87:in `investigate'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/team.rb:156:in `investigate_partial'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cop/team.rb:98:in `investigate'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:349:in `block in inspect_file'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:348:in `each'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:348:in `flat_map'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:348:in `inspect_file'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:291:in `block in do_inspection_loop'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:325:in `block in iterate_until_no_changes'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:318:in `loop'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:318:in `iterate_until_no_changes'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:287:in `do_inspection_loop'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:168:in `block in file_offenses'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:193:in `file_offense_cache'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:167:in `file_offenses'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:158:in `process_file'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:139:in `block in each_inspected_file'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:138:in `each'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:138:in `reduce'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:138:in `each_inspected_file'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:124:in `inspect_files'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/runner.rb:77:in `run'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cli/command/execute_runner.rb:26:in `block in execute_runner'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cli/command/execute_runner.rb:52:in `with_redirect'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cli/command/execute_runner.rb:25:in `execute_runner'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cli/command/execute_runner.rb:17:in `run'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cli/command.rb:11:in `run'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cli/environment.rb:18:in `run'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cli.rb:118:in `run_command'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cli.rb:125:in `execute_runners'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cli.rb:51:in `block in run'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cli.rb:77:in `profile_if_needed'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/lib/rubocop/cli.rb:43:in `run'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/exe/rubocop:19:in `block in <top (required)>'
C:/ruby/Ruby27-x64/lib/ruby/2.7.0/benchmark.rb:308:in `realtime'
C:/ruby/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rubocop-1.63.4/exe/rubocop:19:in `<top (required)>'
C:/ruby/Ruby27-x64/bin/rubocop:32:in `load'
C:/ruby/Ruby27-x64/bin/rubocop:32:in `<main>'
C

Offenses:

rubocop_fails.rb:1:1: C: Style/Documentation: Missing top-level documentation comment for class Foo.
class Foo
^^^^^^^^^
rubocop_fails.rb:1:1: C: [Correctable] Style/FrozenStringLiteralComment: Missing frozen string literal comment.
class Foo
^
rubocop_fails.rb:3:1: C: [Correctable] Layout/EmptyLinesAroundBlockBody: Extra empty line detected at block body beginning.

1 file inspected, 3 offenses detected, 2 offenses autocorrectable

1 error occurred:
An error occurred while Metrics/BlockLength cop was inspecting C:/test/rubocop_fails.rb:2:2.
configuration from C:/test/.rubocop.yml
Errors are usually caused by RuboCop bugs.
Please, report your problems to RuboCop's issue tracker.
https://github.com/rubocop/rubocop/issues

Mention the following information in the issue report:
1.63.4 (using Parser 3.3.1.0, rubocop-ast 1.31.2, running on ruby 2.7.2) [x64-mingw32]
Finished in 0.5653301000129431 seconds

Steps to reproduce the problem

Prepare the sample ruby file and the .rubocop.yml as outlined at the beginning of this report.
Next run:

> rubocop -d .\rubocop_fails.rb

You should see the same result as outlined in the Actual behaviour section above

RuboCop version

> rubocop -V
1.63.4 (using Parser 3.3.1.0, rubocop-ast 1.31.2, running on ruby 2.7.2) [x64-mingw32]
  • Note that this also fails on ruby 3.2.2 (tested)
@rellampec
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rellampec commented Apr 29, 2024 •
edited
Loading

Hmmm, not a bug, I think that the issue pointed in the error. It comes from the .rubocop.yml file itself (not from the ruby code).

Unknown foldable type: :config. Valid foldable types are: array, hash, heredoc, send, csend.

It's rather confusing it doesn't just crash when parsing the config file? (rather than throwing the error when actually inspecting the ruby code)

koic added a commit to koic/rubocop that referenced this issue Apr 29, 2024
@koic
[Fix rubocop#12873] Fix an error for Metrics/BlockLength
9433e6c 
Fix rubocop#12873.

This PR fixes an error for `Metrics/BlockLength` when the `CountAsOne` config is invalid.

## Before

Without the `-d` option, the cause is unclear:

```console
$ bundle exec rubocop --only Metrics/BlockLength
Inspecting 1 file
An error occurred while Metrics/BlockLength cop was inspecting /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb:2:2.
To see the complete backtrace run rubocop -d.
.

1 file inspected, no offenses detected

1 error occurred:
An error occurred while Metrics/BlockLength cop was inspecting /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb:2:2.
Errors are usually caused by RuboCop bugs.
Please, report your problems to RuboCop's issue tracker.
https://github.com/rubocop/rubocop/issues

Mention the following information in the issue report:
1.63.4 (using Parser 3.3.0.5, rubocop-ast 1.31.2, running on ruby 3.3.0) [x86_64-darwin22]
```

When the `-d` option is used, hint appears hidden within the backtrace:

```console
$ bundle exec rubocop --only Metrics/BlockLength -d
For /Users/koic/src/github.com/koic/rubocop-issues/12873: configuration from /Users/koic/src/github.com/koic/rubocop-issues/12873/.rubocop.yml
Default configuration from /Users/koic/src/github.com/rubocop/rubocop/config/default.yml
AllCops/Exclude configuration from /Users/koic/src/github.com/koic/rubocop-issues/.rubocop.yml
configuration from /Users/koic/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/rubocop-minitest-0.35.0/config/default.yml
configuration from /Users/koic/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/rubocop-minitest-0.35.0/config/default.yml
configuration from /Users/koic/src/github.com/rubocop/rubocop-performance/config/default.yml
configuration from /Users/koic/src/github.com/rubocop/rubocop-performance/config/default.yml
configuration from /Users/koic/src/github.com/rubocop/rubocop-rails/config/default.yml
configuration from /Users/koic/src/github.com/rubocop/rubocop-rails/config/default.yml
Use parallel by default.
Skipping parallel inspection: only a single file needs inspection
Inspecting 1 file
Scanning /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb
An error occurred while Metrics/BlockLength cop was inspecting /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb:2:2.
Unknown foldable type: :config. Valid foldable types are: array, hash, heredoc, send, csend.
/Users/koic/src/github.com/rubocop/rubocop/lib/rubocop/cop/metrics/utils/code_length_calculator.rb:54:in `block in build_foldable_checks'
```

## After

Even without the `-d` option, only the hint is displayed:

```console
$ bundle exec rubocop --only Metrics/BlockLength
Inspecting 1 file
Unknown foldable type: :config. Valid foldable types are: array, hash, heredoc, send, csend.
(from file: /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb:2:2)
.

1 file inspected, no offenses detected
```

This behavior is the same as when the `Notice` config in the `Style/Copyright` cop is not valid.
This clarifies what needs to be addressed first to achieve the expected behavior.
koic added a commit to koic/rubocop that referenced this issue Apr 29, 2024
@koic
[Fix rubocop#12873] Fix an error for Metrics/BlockLength
3b4f259 
Fix rubocop#12873.

This PR fixes an error for `Metrics/BlockLength` when the `CountAsOne` config is invalid.

## Before

Without the `-d` option, the cause is unclear:

```console
$ bundle exec rubocop --only Metrics/BlockLength
Inspecting 1 file
An error occurred while Metrics/BlockLength cop was inspecting /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb:2:2.
To see the complete backtrace run rubocop -d.
.

1 file inspected, no offenses detected

1 error occurred:
An error occurred while Metrics/BlockLength cop was inspecting /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb:2:2.
Errors are usually caused by RuboCop bugs.
Please, report your problems to RuboCop's issue tracker.
https://github.com/rubocop/rubocop/issues

Mention the following information in the issue report:
1.63.4 (using Parser 3.3.0.5, rubocop-ast 1.31.2, running on ruby 3.3.0) [x86_64-darwin22]
```

When the `-d` option is used, hint appears hidden within the backtrace:

```console
$ bundle exec rubocop --only Metrics/BlockLength -d
For /Users/koic/src/github.com/koic/rubocop-issues/12873: configuration from /Users/koic/src/github.com/koic/rubocop-issues/12873/.rubocop.yml
Default configuration from /Users/koic/src/github.com/rubocop/rubocop/config/default.yml
AllCops/Exclude configuration from /Users/koic/src/github.com/koic/rubocop-issues/.rubocop.yml
configuration from /Users/koic/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/rubocop-minitest-0.35.0/config/default.yml
configuration from /Users/koic/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/rubocop-minitest-0.35.0/config/default.yml
configuration from /Users/koic/src/github.com/rubocop/rubocop-performance/config/default.yml
configuration from /Users/koic/src/github.com/rubocop/rubocop-performance/config/default.yml
configuration from /Users/koic/src/github.com/rubocop/rubocop-rails/config/default.yml
configuration from /Users/koic/src/github.com/rubocop/rubocop-rails/config/default.yml
Use parallel by default.
Skipping parallel inspection: only a single file needs inspection
Inspecting 1 file
Scanning /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb
An error occurred while Metrics/BlockLength cop was inspecting /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb:2:2.
Unknown foldable type: :config. Valid foldable types are: array, hash, heredoc, send, csend.
/Users/koic/src/github.com/rubocop/rubocop/lib/rubocop/cop/metrics/utils/code_length_calculator.rb:54:in `block in build_foldable_checks'
```

## After

Even without the `-d` option, only the hint is displayed:

```console
$ bundle exec rubocop --only Metrics/BlockLength
Inspecting 1 file
Unknown foldable type: :config. Valid foldable types are: array, hash, heredoc, send, csend.
(from file: /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb:2:2)
.

1 file inspected, no offenses detected
```

This behavior is the same as when the `Notice` config in `Style/Copyright` cop is not valid.
This clarifies what needs to be addressed first to achieve the expected behavior.
@koic koic mentioned this issue Apr 29, 2024
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@koic
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koic commented Apr 29, 2024

Yes, it's not a bug, but I've opened issue #12874 to make some adjustments to the unclear parts.

koic added a commit to koic/rubocop that referenced this issue Apr 29, 2024
@koic
[Fix rubocop#12873] Fix an error for Metrics/BlockLength
eb26e9d 
Fixes rubocop#12873.

This PR fixes an error for `Metrics/BlockLength` when the `CountAsOne` config is invalid.

## Before

Without the `-d` option, the cause is unclear:

```console
$ bundle exec rubocop --only Metrics/BlockLength
Inspecting 1 file
An error occurred while Metrics/BlockLength cop was inspecting /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb:2:2.
To see the complete backtrace run rubocop -d.
.

1 file inspected, no offenses detected

1 error occurred:
An error occurred while Metrics/BlockLength cop was inspecting /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb:2:2.
Errors are usually caused by RuboCop bugs.
Please, report your problems to RuboCop's issue tracker.
https://github.com/rubocop/rubocop/issues

Mention the following information in the issue report:
1.63.4 (using Parser 3.3.0.5, rubocop-ast 1.31.2, running on ruby 3.3.0) [x86_64-darwin22]
```

When the `-d` option is used, hint appears hidden within the backtrace:

```console
$ bundle exec rubocop --only Metrics/BlockLength -d
For /Users/koic/src/github.com/koic/rubocop-issues/12873: configuration from /Users/koic/src/github.com/koic/rubocop-issues/12873/.rubocop.yml
Default configuration from /Users/koic/src/github.com/rubocop/rubocop/config/default.yml
AllCops/Exclude configuration from /Users/koic/src/github.com/koic/rubocop-issues/.rubocop.yml
configuration from /Users/koic/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/rubocop-minitest-0.35.0/config/default.yml
configuration from /Users/koic/.rbenv/versions/3.3.0/lib/ruby/gems/3.3.0/gems/rubocop-minitest-0.35.0/config/default.yml
configuration from /Users/koic/src/github.com/rubocop/rubocop-performance/config/default.yml
configuration from /Users/koic/src/github.com/rubocop/rubocop-performance/config/default.yml
configuration from /Users/koic/src/github.com/rubocop/rubocop-rails/config/default.yml
configuration from /Users/koic/src/github.com/rubocop/rubocop-rails/config/default.yml
Use parallel by default.
Skipping parallel inspection: only a single file needs inspection
Inspecting 1 file
Scanning /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb
An error occurred while Metrics/BlockLength cop was inspecting /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb:2:2.
Unknown foldable type: :config. Valid foldable types are: array, hash, heredoc, send, csend.
/Users/koic/src/github.com/rubocop/rubocop/lib/rubocop/cop/metrics/utils/code_length_calculator.rb:54:in `block in build_foldable_checks'
```

## After

Even without the `-d` option, only the hint is displayed:

```console
$ bundle exec rubocop --only Metrics/BlockLength
Inspecting 1 file
Unknown foldable type: :config. Valid foldable types are: array, hash, heredoc, send, csend.
(from file: /Users/koic/src/github.com/koic/rubocop-issues/12873/example.rb:2:2)
.

1 file inspected, no offenses detected
```

This behavior is the same as when the `Notice` config in `Style/Copyright` cop is not valid.
This clarifies what needs to be addressed first to achieve the expected behavior.
koic added a commit that referenced this issue Apr 29, 2024
@koic
Merge pull request #12874 from koic/fix_an_error_for_metrics_block_le…
3b3a0cd 
…ngth

[Fix #12873] Fix an error for `Metrics/BlockLength`
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[Fix #12873] Fix an error for Metrics/BlockLength koic/rubocop
2 participants
@koic @rellampec