class Haml::Compiler::ScriptCompiler

def compile_interpolated_plain(node)

because we have to escape only interpolated values.
String-interpolated plain text must be compiled with this method 
def compile_interpolated_plain(node)
  temple = [:multi]
  StringSplitter.compile(node.value[:text]).each do |type, value|
    case type
    when :static
      temple << [:static, value]
    when :dynamic
      temple << [:escape, node.value[:escape_interpolation], [:dynamic, value]]
    end
  end
  temple << [:newline]
end