/usr/share/kde4/apps/khelpcenter/searchhandlers/htdig/htdig_long.html is in khelpcenter4 4:4.8.2-0ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | $(STARSRIGHT) <a href="$&(URL)">$&(TITLE) ($(MODIFIED))</a><br>
$(EXCERPT)<br>
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