#26 first end tag ends define action

[Stephen Savitzky]

Everything after the first end tag in the <action> part
of a <define element...> is ignored. (Elements already
open are properly closed, though.)

For example:

<define element="foo">
<action><b><i>f</i></b>o</action>
</define>
<foo/>

expands as <b><i>f</i></b>

Note that

<set name="foo"><b><i>f</i>o</b>o</set> &foo;

expands correctly; the problem is more likely to be in
the expansion than in the parsing.