wiki: eth_pendingTransactions documentation lacks 'for managed addresses' caveat

[meowsbits]

System information

Geth version: any from at least last few years

Expected behaviour

eth_pendingTransactions returns all transactions marked as pending in the transaction pool, as documented here: https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_pendingtransactions

__eth_pendingTransactions__

Returns the pending transactions list.

Actual behaviour

eth_pendingTransactions returns pending transactions sent from accounts managed by geth instance.

Proposed Solution

Fix documentation to read:

__eth_pendingTransactions__

Returns the transactions that are pending in the transaction pool and have a from address that is one of the accounts this node manages.

https://github.com/ethereum/go-ethereum/blob/master/internal/ethapi/api.go#L1582-L1584

[artob]

Linking to the previous Geth issue: ethereum/go-ethereum#20523