Lint/FormatParameterMismatch triggers off format strings in arguments (ie strftime arguments)

[seandilda]

Lint/FormatParameterMismatch appears to trigger if the arguments include a string that appears to have format values in it.

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Expected behavior

The cop should only complain if there are conflicting parameter types in the format string.

Actual behavior

If the format string has one type of parameter types and an argument to the format string appears to have another, the cop will trigger.

Steps to reproduce the problem

Run rubocop against a file with the following line:

format('%<time>s', time: time.strftime('%Y-%m-%d %H:%M:%S'))

RuboCop version

Include the output of rubocop -V or bundle exec rubocop -V if using Bundler. Here's an example:

0.85.1 (using Parser 2.7.1.3, rubocop-ast 0.0.3, running on ruby 2.6.6 x86_64-linu
x-musl)

[bbatsov]

@andrykonchin can you look into this, please? I'm assuming it's related to the recent changes you did there.

[andrykonchin]

@bbatsov Done