few weeks ago I built default tip 4.1, I only ran make and make htmldoc I just noticed a js/ directory created around that date on the root drive of the build directory. I don't see how just /js/search.js got created outside BUILDDIR.
possibly related? Euphoria Ticket #932: search bar doesn't work
I am unable to reproduce this on the 4.0 branch. It must be a 4.1 regression.