Layout/Tab ignores tabs that are not indentation

[bquorning]

It seems that Layout/Tab will only report on tabs when they are part of a line’s indentation – although the documentation says that “this cop checks for tabs inside the source code.”

Expected behavior

In my test file, there is a tab between puts and 42, which I expect Layout/Tab to detect.

# frozen_string_literal: true

puts	42

Actual behavior

No offense is reported.

Steps to reproduce the problem

Run rubocop on the file above.

RuboCop version

Include the output of rubocop -V. Here's an example:

$ rubocop -V
0.52.1 (using Parser 2.4.0.2, running on ruby 2.4.2 x86_64-darwin15)