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Cop idea: Out of range referencing for Regexp #7755

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pocke opened this issue Feb 25, 2020 · 0 comments
Closed

Cop idea: Out of range referencing for Regexp #7755

pocke opened this issue Feb 25, 2020 · 0 comments

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@pocke
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@pocke pocke commented Feb 25, 2020

Is your feature request related to a problem? Please describe.

When a reference for Regepx is out of range, it always returns nil.

/(foo)bar/ =~ 'foobar'
# ok
p $1 # => foo
# bad - $2 always returns nil.
p $2 # => nil

Describe the solution you'd like

Add a cop to detect the problem.

Describe alternatives you've considered

Nothing

Additional context

We will be able to the cop with regexp_parser gem. ref: #7746

sonalinavlakhe added a commit to sonalinavlakhe/rubocop that referenced this issue Jul 27, 2020
sonalinavlakhe added a commit to sonalinavlakhe/rubocop that referenced this issue Jul 30, 2020
sonalinavlakhe added a commit to sonalinavlakhe/rubocop that referenced this issue Aug 5, 2020
@marcandre marcandre closed this in a678aba Aug 5, 2020
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