If serendipity_event_unstrip_tags is active, we
don't want to strip HTML tags from comments; we
want to keep and encode them with entities. So
we should do that here, too.
As the frontend_display hook - that is catched by
serendipity_event_unstrip_tags - is called quite
late, we have to skip the strip_tags() call
before truncatin the entry.
(I'm not sure why we first strip _all_ tags and
later on keep _some_ tags (that have already
been removed), but that's maybe because the
frontend_display hook may have re-added some
tags? Be it as it may, we do that for 14
years, so I don't want to change that now.)
Signed-off-by: Thomas Hochstein <thh@inter.net>