It'd be great if email-ext allowed to specify an alternative text if a CHANGE_... token is empty (i.e. no changes).

Then I could add a notice if no changes are available to make it clear that nothing was changed:

Changes:

The following changes occurred since the last unstable build:

There were no changes

Build Log:

blabla

Otherwise, it'll just look like the following:

Changes:

The following changes occurred since the last unstable build:

Build Log:

blabla

Example token:

${CHANGES_SINCE_LAST_UNSTABLE, reverse=true, default="<em>There were no changes.</em>"}