Comment 29 for bug 907056

Ah. Aha. For search results availability ordering, "Checked out" has a config.copy_status setting of copy_active = TRUE and opac_visible = TRUE, which puts it in the "Most available" category by the criteria I listed a few comments above.

I'll add special logic to deal with "Checked out" to push it into the "less available" category. Ultimately we should probably have a separate branch extend config.copy_status and handle ranking directly as an additional column; but there's long-established practice of using the ccs IDs directly.