These are the only cases 100% safe to apply the renaming of the
testcase class names to match the file names.
All other cases are not safe, because they are missing namespace
and may enter into name conflicts. Adding namespaces is not as
simple as imagined because it implies to, also, add a good number
of modifications to core. See the issue for more details.
For Dataformats that support exporting HTML content, provide an API for
converting images within that content to something suitable for the format.
This fixes an issue with the PDF writer when it encountered a pluginfile.php
image, which it tried to request via HTTP without an active session. This
resulted in a 303 header returned by Moodle instead of the actual image,
causing an exception in the underlying TCPDF library.
Eloy Lafuente (stronk7)