Make command char use regex escape

7 jobs for master in 4 minutes and 1 second (queued for 11 seconds)
Status Job ID Name Coverage
  Syntax
passed #2727
ruby
jruby_1.7

00:00:36

passed #2728
ruby
jruby_9.1

00:02:35

passed #2723
ruby
ruby_2.1

00:02:52

passed #2724
ruby
ruby_2.2

00:02:58

passed #2725
ruby
ruby_2.3

00:01:36

passed #2726
ruby
ruby_2.4

00:01:22

 
  Linting
passed #2729
ruby
rubocop

00:01:01