auto postings break redundant equity/cost detection and transaction balancing

[moben]

This minimal example is balanced if --auto is not passed, but reported as unbalanced with --auto, despite the auto posting rule not applying to any of the postings in the transaction afaict:

2023-11-01 * conversion posting
    assets:shares       7 TEST @@ 50.00€
    equity:conversion  -7 TEST
    equity:conversion  50.00€
    equity:opening    -50.00€ 

= expenses:foobar
    expenses:foobar  *-1
    expenses:foo  *0.5
    liabilities:bar  *0.5

% hledger print -f auto_equity_conversion_bug_2110.journal
2023-11-01 * conversion posting
    assets:shares        7 TEST @@ 50.00€
    equity:conversion             -7 TEST
    equity:conversion              50.00€
    equity:opening                -50.00€

% hledger print --auto -f auto_equity_conversion_bug_2110.journal
hledger: Error: /...../auto_equity_conversion_bug_2110.journal:1-5:
1 | 2023-11-01 * conversion posting
  |     assets:shares        7 TEST @@ 50.00€
  |     equity:conversion             -7 TEST
  |     equity:conversion              50.00€
  |     equity:opening                -50.00€

This multi-commodity transaction is unbalanced.
The real postings' sum should be 0 but is: -7 TEST, 50.00€
Consider adjusting this entry's amounts, adding missing postings,
or recording conversion price(s) with @, @@ or equity postings.

Tested with 1.30, 1.31 and master, all running on Linux (NixOS unstable).

If I remove the conversion postings it works, even with --infer-equity (and of course it works without the auto posting). The manual mentions that transactions need to be balanced before and after auto postings are applied, but I think that's the case here as the auto posting rule doesn't even match anything?

[simonmichael]

Good catch! Thank you, fixed in master.