From 3d8fbca67eeebbb371caf3d0b290c51bac2af01e Mon Sep 17 00:00:00 2001
From: The MMGen Project <mmgen@tuta.io>
Date: Mon, 5 Oct 2026 14:30:05 +0000
Subject: [PATCH] TwAddresses.get_change_address(): support full-list matching

---
 mmgen/tw/addresses.py | 37 +++++++++++++++++++++----------------
 mmgen/tx/new.py       | 18 +++++++-----------
 mmgen/tx/new_swap.py  |  7 +------
 3 files changed, 29 insertions(+), 33 deletions(-)

diff --git a/mmgen/tw/addresses.py b/mmgen/tw/addresses.py
index 8404f461..b3ccd875 100755
--- a/mmgen/tw/addresses.py
+++ b/mmgen/tw/addresses.py
@@ -35,6 +35,7 @@ class TwAddresses(TwView):
 	showused = 1 # tristate: 0: no, 1: yes, 2: only
 	all_labels = False
 	autochg_ignore_labels = False # if set, this overrides the global cfg var of the same name
+	autochg_match_full_list = False
 	mod_subpath = 'tw.addresses'
 
 	prompt_fs_in = [
@@ -354,29 +355,33 @@ class TwAddresses(TwView):
 			desc            = None):
 
 		"""
-		Get lowest-indexed unused address in tracking wallet for requested AddrListID.
+		Get lowest-indexed unused address in tracking wallet matching requested key, if key is
+		given, else entire tracking wallet.
+
 		Return values on failure:
-		    None:  no addresses in wallet with requested AddrListID
-		    False: no unused addresses in wallet with requested AddrListID
+		    None:  no addresses in wallet matching requested key
+		    False: no unused addresses in wallet matching requested key, if key is given, else
+		           no unused addresses in entire wallet
 		"""
 
 		assert self.sort_key == 'twmmid'
 		assert self.reverse is False
 
-		from ..algo import get_start
-		target = self.get_target(key)
-		start = get_start(
-			data            = self.data,
-			bot             = 0 if bot is None else bot,
-			top             = len(self.data) - 1 if top is None else top,
-			target          = target,
-			bisect_key_func = self.get_bisect_key,
-			match_key_func  = self.get_match_key)
-		if start is None:
-			return None
+		if key:
+			from ..algo import get_start
+			target = self.get_target(key)
+			start = get_start(
+				data            = self.data,
+				bot             = 0 if bot is None else bot,
+				top             = len(self.data) - 1 if top is None else top,
+				target          = target,
+				bisect_key_func = self.get_bisect_key,
+				match_key_func  = self.get_match_key)
+			if start is None:
+				return None
 
-		for d in self.data[start:]:
-			if self.get_match_key(d) == target:
+		for d in (self.data[start:] if key else self.data):
+			if (not key) or self.get_match_key(d) == target:
 				if (
 						not d.is_used
 						and not d.twmmid in exclude
diff --git a/mmgen/tx/new.py b/mmgen/tx/new.py
index 206d0509..513e4fcd 100755
--- a/mmgen/tx/new.py
+++ b/mmgen/tx/new.py
@@ -206,19 +206,15 @@ class New(Base):
 
 		return self._cl_output(arg, mmid or None, coin_addr, amt, None, is_vault)
 
-	async def get_autochg_addr(
-			self,
-			proto,
-			arg,
-			*,
-			exclude,
-			desc,
-			match_all_addrtypes = False):
+	async def get_autochg_addr(self, proto, arg, *, exclude, desc):
 
 		from ..tw.addresses import TwAddresses
 		al = await TwAddresses(self.cfg, proto, get_data=True)
 
-		if match_all_addrtypes:
+		if arg is None and al.autochg_match_full_list:
+			res = al.get_change_address(None, exclude=exclude, desc=desc)
+			req_desc = None
+		elif arg is None:
 			res = al.get_change_address_by_addrtype(None, exclude=exclude, desc=desc)
 			req_desc = 'of any allowed address type'
 		elif obj := get_obj(MMGenAddrType, proto=proto, id_str=arg, silent=True):
@@ -231,9 +227,9 @@ class New(Base):
 		if res:
 			return res
 
-		die(2, 'Tracking wallet contains no {t}addresses {d}'.format(
+		die(2, 'Tracking wallet contains no {t}addresses{d}'.format(
 			t = '' if res is None else 'unused ',
-			d = req_desc))
+			d = ' ' + req_desc if req_desc else ''))
 
 	async def process_cmdline_args(self, cmd_args, ad_f, ad_w):
 
diff --git a/mmgen/tx/new_swap.py b/mmgen/tx/new_swap.py
index 3e1be722..50d86db2 100755
--- a/mmgen/tx/new_swap.py
+++ b/mmgen/tx/new_swap.py
@@ -53,12 +53,7 @@ class NewSwap(New):
 				return ret(proto.coin, proto.network, pa.addr, pa.mmid)
 
 		full_desc = f'{desc} address on the {proto.coin} {proto.network} network'
-		res = await self.get_autochg_addr(
-			proto,
-			arg,
-			exclude = [],
-			desc = full_desc,
-			match_all_addrtypes = not arg)
+		res = await self.get_autochg_addr(proto, arg, exclude=[], desc=full_desc)
 		self.confirm_autoselected_addr(res.twmmid, res.comment, full_desc)
 		return ret(proto.coin, proto.network, res.addr, res.twmmid)