Autocorrect doesn't insert spaces when converting } to end

[geowy]

I encountered this problem when trying to autocorrect curly braces to do...ends. If the closing braces are right next to each other rubocop will just replace each } with end without inserting any spaces, e.g. }} will become endend.

This is probably easier to demonstrate:

$ rubocop -V
warning: parser/current is loading parser/ruby21, which recognizes
warning: 2.1.7-compliant syntax, but you are running 2.1.3.
0.33.0 (using Parser 2.3.0.pre.2, running on ruby 2.1.3 x86_64-darwin13.0)
$
$
$
$ cat test.rb
(0..3).each { |a| a.times {
  puts a
}}
$
$
$
$ rubocop -a test.rb
warning: parser/current is loading parser/ruby21, which recognizes
warning: 2.1.7-compliant syntax, but you are running 2.1.3.
Inspecting 1 file
E

Offenses:

test.rb:1:13: C: [Corrected] Avoid using {...} for multi-line blocks.
(0..3).each { |a| a.times {
            ^
test.rb:1:19: C: [Corrected] Block body expression is on the same line as the block start.
(0..3).each { |a| a.times {
                  ^^^^^^^^^
test.rb:1:27: C: [Corrected] Avoid using {...} for multi-line blocks.
(0..3).each { |a| a.times {
                          ^
test.rb:4:1: E: unexpected token $end

1 file inspected, 4 offenses detected, 3 offenses corrected
$
$
$
$ cat test.rb
(0..3).each do |a| a.times do
  puts a
endend