If I recall, the behavior is actually that it *will* ingest the
alternates if they are in a folder with the same name and _alt suffix.
But it will ignore the suffixed folders if it doesn't find a matching
filename in the parent folder. (It's been a while since I looked at
this, so I could be wrong.)
That said, I found this method to be somewhat impractical, as it
required creating new folders for each file being ingested, which is
error prone and a lot of extra work.
In our customized version of staticsync at HNE, I have added the
ability to define suffixes for files themselves. So if the system sees
a file called foo.jpg and another file called foo_dng.dng, and _dng
has been defined as a file alt suffix, it will import foo_dng as an
alternate of foo.jpg. We use this when we photograph archival
materials to store the backs and original DNG files at the same time
as the main image.
I have this set up to run every half hour. So our photographers drop
the photos in the hot folder, and then the system automatically
imports the main files and alternates into the system.
This version of staticsync is not in SVN because it fairly customized
to our workflow. However I could conceivably try to roll some of these
changes back into the trunk if folks would find them useful. (Or just
provide the customized version for others to play with.)
-David