As of commit a1467af, adding something like this to aerc.conf doesn't work (both for ui:account and ui:folder):
[ui:account=ACCOUNTNAME]
sort="from"
While adding something like this does:
[ui:account=ACCOUNTNAME]
index-format=%D
(This is the maildir backend, so issuing the :sort from command manually does work.)
Same here.
On my configuration, I have specified
[ui] sort=arrivaland it only works on the account on tab 0. My other accounts (in tabs 1 and on) get default sorting.
I believe this may be related, and I'm using IMAP, so this would mean that the issue doesn't only happen to maildir accounts.