Including example fails without a file extension
Here are two example includes from the in-drafting Alpine User Handbook:
[source] ---- include::example$resolv.conf ----
[source] ---- include::example$dhcp_interfaces ----
The former properly expands. The latter results in the following output (in-html):
Both files exist.
dhcp.interfaces and changing the
_ in the include to a
. resolves the issue.