class Middleman::Renderers::ERb::Template
def precompiled_preamble(locals)
In preamble we need a flag `__in_erb_template` and SafeBuffer for padrino apps.
#
def precompiled_preamble(locals) original = super "__in_erb_template = true\n" << original # .rpartition("\n").first << "#{@outvar} = _buf = ActiveSupport::SafeBuffer.new\n" end