Style/VariableNumber does not allow digits in the middle

[eagletmt]

Expected behavior

Assignments like target_u2f_device = nil isn't detected as offence against Style/VariableNumber.

Actual behavior

target_u2f_device = nil is detected.

Steps to reproduce the problem

% cat number.rb
target_u2f_device = nil
% rubocop --only Style/VariableNumber number.rb
Inspecting 1 file
C

Offenses:

number.rb:1:1: C: Style/VariableNumber: Use normalcase for variable numbers.
target_u2f_device = nil
^^^^^^^^^^^^^^^^^

1 file inspected, 1 offense detected

RuboCop version

% rubocop -V
0.43.0 (using Parser 2.3.1.3, running on ruby 2.3.1 x86_64-linux)

[parkr]

Seeing the same thing.

test/test_related_posts.rb:16:7: C: Style/VariableNumber: Use normalcase for variable numbers.
      last_10_recent_posts = (@site.posts.docs.reverse - [last_post]).first(10)
      ^^^^^^^^^^^^^^^^^^^^

Reference: https://travis-ci.org/jekyll/jekyll/jobs/161430798