This directory contains Trac's default Jinja2 templates.

It is not advised to make local modifications to those files after
installation, as they might be lost during the installation of a new
Trac version.

As an alternative, you can copy the templates you want to modify and
place them in the templates/ directory of your Trac environment or in
the location specified in the trac.ini file under the `[inherit]
templates_dir` setting (the former having precedence over the latter).

Nevertheless, if you use such a locally modified template, it will be
easy to miss the functionality provided by a newer version of the
template, after an upgrade. Because of that, the preferred way to
alter the output would be to write plugins doing client-side
JavaScript transformation (see for example tracopt/ticket/clone.py),
as this is robust when upgrading to a newer version of Trac: you only
have to check that your filtering still matches and that the
transformation works as expected...
