parameter, `title`). as the empty page title is illegal, munging is used,
resulting in ascending numeric page titles to be created.
-the second patch is actually a one-liner, filtering the title through sprintf.
+the second patch is actually a one-liner, filtering the title through strftime.
### potential user interaction issues
this has two side effects which have to be considered: first, the empty page
title is accepted also in normal postforms (previously, this resulted in a "bad
page name" error); second, entering a percent sign in that field might result
-in unexpexted sprintf substitution (sprintf might not even substitute for
+in unexpexted strftime substitution (strftime might not even substitute for
common uses of percent as in "reach 10% market share", but might in others as
in "the 10%-rule").