New feature clarification (commit with externals)

The 1.8 release notes read as follows:

   The svn commit command supports a new --include-externals option, which
   causes it to commit changes within externals in the current working
   copy, in addition to the changes in the current working copy. This works
   by implicitly adding all externals within the commit target to the list
   of commit targets.

(http://subversion.apache.org/docs/release-notes/1.8.html#commit-externals)

My testing seems to show that we do not appear to commit externals pulled
from a different repository than the primary working copy. Can someone
confirm this? Is there a technical reason not to do this? Obviously we
can't do a multi-repository atomic commit, but I could have sworn that at
one time this feature would sort the committables by repository, then issue
one commit per repository (with the opportunity to compose a log message for
each commit grouping). Maybe I'm just delusional?

-- 
C. Michael Pilato <cmpilato_at_collab.net>
CollabNet   <>   www.collab.net   <>   Enterprise Cloud Development