>>> import albatross
>>> ctx = albatross.SimpleContext('.')
>>> ctx.locals.signature = '<script>alert("Naughty, naughty!")</script>'
>>> albatross.Template(ctx, '<magic>', '''
... <al-value expr="signature" whitespace>
... ''').to_html(ctx)
>>> ctx.flush_content()
&lt;script&gt;alert(&quot;Naughty, naughty!&quot;)&lt;/script&gt;
