Merge bitcoin/bitcoin#25575: Address comments remaining from #25353

1056bbdfcd Address comments remaining from #25353 (Antoine Riard)

Pull request description:

  This PR should address the remaining comments from #25353.

ACKs for top commit:
  MarcoFalke:
    cr ACK 1056bbdfcd
  glozow:
    ACK 1056bbdfcd
  w0xlt:
    cr ACK 1056bbdfcd

Tree-SHA512: 194524193b1f087742c04d3cbe221e2ccf62e1f9303dc6668d62b73bd2dc0c039b7d68b33658dbee7809bd14bb8a5479f8e7928180b18c3180fdfbe3876c3ca1

doc/policy/mempool-replacements.md

@@ -15,8 +15,8 @@ other consensus and policy rules, each of the following conditions are met:
 
    *Rationale*: See [BIP125
    explanation](https://github.com/bitcoin/bips/blob/master/bip-0125.mediawiki#motivation).
-   The Bitcoin Core implementation offers a node setting (`mempoolfullrbf`) to allow transaction
-   replacement without enforcement of the opt-in signaling rule.
+   Use the (`-mempoolfullrbf`) configuration option to allow transaction replacement without enforcement of the
+   opt-in signaling rule.
 
 2. The replacement transaction only include an unconfirmed input if that input was included in
    one of the directly conflicting transactions. An unconfirmed input spends an output from a

doc/release-notes.md

@@ -87,8 +87,8 @@ New settings
 ------------
 
 - A new `mempoolfullrbf` option has been added, which enables the mempool to
-  accept transaction replacement without enforcing the opt-in replaceability
-  signal. (#25353)
+  accept transaction replacement without enforcing BIP125 replaceability
+  signaling. (#25353)
 
 Tools and Utilities
 -------------------

test/functional/feature_rbf.py

@@ -702,17 +702,16 @@ class ReplaceByFeeTest(BitcoinTestFramework):
         assert_raises_rpc_error(-26, "insufficient fee", self.nodes[0].sendrawtransaction, tx.serialize().hex())
 
     def test_fullrbf(self):
-        txid = self.wallet.send_self_transfer(from_node=self.nodes[0])['txid']
-        self.generate(self.nodes[0], 1)
-        confirmed_utxo = self.wallet.get_utxo(txid=txid)
 
+        confirmed_utxo = self.make_utxo(self.nodes[0], int(2 * COIN))
         self.restart_node(0, extra_args=["-mempoolfullrbf=1"])
+        assert self.nodes[0].getmempoolinfo()["fullrbf"]
 
         # Create an explicitly opt-out transaction
         optout_tx = self.wallet.send_self_transfer(
             from_node=self.nodes[0],
             utxo_to_spend=confirmed_utxo,
-            sequence=SEQUENCE_FINAL,
+            sequence=BIP125_SEQUENCE_NUMBER + 1,
             fee_rate=Decimal('0.01'),
         )
         assert_equal(False, self.nodes[0].getmempoolentry(optout_tx['txid'])['bip125-replaceable'])
@@ -728,6 +727,7 @@ class ReplaceByFeeTest(BitcoinTestFramework):
 
         # Optout_tx is not anymore in the mempool.
         assert optout_tx['txid'] not in self.nodes[0].getrawmempool()
+        assert conflicting_tx['txid'] in self.nodes[0].getrawmempool()
 
 if __name__ == '__main__':
     ReplaceByFeeTest().main()