class ActionView::Template::Handlers::Erubis

def add_expr(src, code, indicator)

We override to always treat <%== as escaped.
Erubis toggles <%= and <%== behavior when escaping is enabled. 
def add_expr(src, code, indicator)
  case indicator
  when '=='
    add_expr_escaped(src, code)
  else
    super
  end
end

def add_expr_escaped(src, code) 

def add_expr_escaped(src, code)
  flush_newline_if_pending(src)
  if code =~ BLOCK_EXPR
    src << "@output_buffer.safe_append= " << code
  else
    src << "@output_buffer.safe_append=(" << code << ");"
  end
end

def add_expr_literal(src, code) 

def add_expr_literal(src, code)
  flush_newline_if_pending(src)
  if code =~ BLOCK_EXPR
    src << '@output_buffer.append= ' << code
  else
    src << '@output_buffer.append=(' << code << ');'
  end
end

def add_postamble(src) 

def add_postamble(src)
  flush_newline_if_pending(src)
  src << '@output_buffer.to_s'
end

def add_preamble(src) 

def add_preamble(src)
  @newline_pending = 0
  src << "@output_buffer = output_buffer || ActionView::OutputBuffer.new;"
end

def add_stmt(src, code) 

def add_stmt(src, code)
  flush_newline_if_pending(src)
  super
end

def add_text(src, text) 

def add_text(src, text)
  return if text.empty?
  if text == "\n"
    @newline_pending += 1
  else
    src << "@output_buffer.safe_append='"
    src << "\n" * @newline_pending if @newline_pending > 0
    src << escape_text(text)
    src << "';"
    @newline_pending = 0
  end
end

def flush_newline_if_pending(src) 

def flush_newline_if_pending(src)
  if @newline_pending > 0
    src << "@output_buffer.safe_append='#{"\n" * @newline_pending}';"
    @newline_pending = 0
  end
end