Erb::Indent
A basic PoC of Feature #15538.
Installation
$ gem install erb-indent
Usage
require 'erb/indent'
erb = <<-ERB
1
<%| [2, 3, 4].each do |num| -%>
<% unless num == 3 -%>
<%= num %>
<% end -%>
<%| end -%>
5
ERB
puts Erb::Indent.new(erb, nil, "-").result1
2
4
5
License
The gem is available as open source under the terms of the MIT License.