Documentation / technical / api-revision-walking.txton commit pre-POSIX.1-2001 systems do not have <sys/select.h> (2600973)
   1revision walking API
   2====================
   3
   4Talk about <revision.h>, things like:
   5
   6* two diff_options, one for path limiting, another for output;
   7* calling sequence: init_revisions(), setup_revsions(), get_revision();
   8
   9(Linus, JC, Dscho)