Wrong indentation on "end" keyword

[khangal]

Ubuntu 16.04
VIM 8.0

1. if statement with nested erb fails

<div>
  <% if signed_in? %>
    Signed in as: <%= current_user.name %>
  foo
<% end %>
</div>

2. else statement fails

<div>
  <% if signed_in? %>
    Signed in as: <%= current_user.name %>
<% else %>
  foo
<% end %>
</div>

3. Without nested erb works

<div>
  <% if signed_in? %>
    Signed in as: without nested erb
    foo
  <% end %>
</div>

[AndrewRadev]

@tpope Can you think of what case is being handled by this code?

vim-ruby/indent/eruby.vim

Lines 97 to 100 in 4788a08

	if line !~# '^\s*<%' && line =~# '%>\s*$' && line !~# '^\s*end\>'
	\ && synID(v:lnum, match(cline, '\S') + 1, 1) != hlID('htmlEndTag')
	let ind = ind - sw
	endif

I get the meaning, it doesn't start with a <%, but it does end in %>, but I'm not sure what its purpose is. If I comment it out, this example works, but I'm assuming something valid would break.