rubocopが一切使われていないRailsアプリにrubocopを段階的に導入していく際にやったこと/やりたいこと ref: http://qiita.com/kyohei_shimada/items/e739dec967eb5e61721c

file0.txt

bundle exec rubocop -D -R
# ...
629 files inspected, 8475 offenses detected

file1.txt

git diff --shortstat
 381 files changed, 4285 insertions(+), 4388 deletions(-)

file10.diff

--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1092,22 +1092,6 @@ Style/SpaceAfterComma:
 Style/SpaceAroundEqualsInParameterDefault:
   Enabled: false

-# Offense count: 50
-# Cop supports --auto-correct.
-# Configuration parameters: MultiSpaceAllowedForOperators.
-Style/SpaceAroundOperators:
-  Exclude:
-    # 無視しているファイル名一覧

file11.diff

+Style/SpaceAroundOperators:
+  Severity: warning
+  AllowForAlignment: true 

file12.txt

bundle exec rubocop -D -R -c .rubocop_todo.yml --only Style/SpaceAroundOperators

file13.txt

bundle exec rubocop -D -R -c .rubocop_todo.yml --only Style/SpaceAroundOperators --auto-correct

file2.txt

gem 'rubocop'

file3.txt

bundle install

file4.txt

bundle exec rubocop -R -D

file5.txt

bundle exec rubocop -R --auto-gen-config --exclude-limit 999999 

file6.txt

bundle exec rubocop -D -R -c .rubocop_todo.yml

file7.txt

# fail-levelは 3.で直したレベルを設定しておく
bundle exec rubocop -R -D --fail-level W

file8.txt

touch .rubocop.yml

file9.txt

inherit_from: .rubocop.yml