An empty list stored in hl:mpackdb comes back as an empty hybrid

History

1. Anton opened the ticket 2026-09-25 06:53
2. Anton changed the state review 2026-09-25 11:53

   Done: an empty list stored in hl:mpackdb comes back as an empty list, also after the database is reopened (commit 342fc7ac on branch tickets-b, which lands on master when it is merged).

   Test:

   1. hybriel tests/pass/plugins/022_mpackdb_empty_list.hl. It prints tags [] and nested [[],[1]] twice, the second time after a reopen.
   2. In your own app: db.put({ tags = [] }), then db.fetch(key).tags.push('x') works.

   Details:

   • The cause was the bridge to every plugin, not only mpackdb: an empty list and an empty hybrid looked the same there. An empty {} still comes back as {}.
   • Records already stored with tags = {} stay that way until they are written again.