The only problem with this is that the behavior is *undocmented*. If you want
to stay legal, use hinted insertion with end() (which will *documentedly*
work for all the ordered_non_unique indices of your container, not only the one
you happen to be doing for the insertion.)

Joaqu?n M L?pez Mu?oz
Telef?nica Digital

That is very interesting. The wording is kind of strange though: "If succesful, insertion happens as close as possible to the location just prior to position." I wonder if stability was the intention?

Thank you very much for your analysis of the code.

—John