From 71ee60a77bf4061121b9109bbf3fd0816a64b75e Mon Sep 17 00:00:00 2001
From: The MMGen Project <mmgen@tuta.io>
Date: Tue, 5 May 2026 12:07:32 +0000
Subject: [PATCH] help usage, notes: add --coin opt where applicable

---
 mmgen/help/__init__.py          | 5 +++--
 mmgen/help/help_notes.py        | 8 ++++++++
 mmgen/help/txcreate_examples.py | 3 ++-
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/mmgen/help/__init__.py b/mmgen/help/__init__.py
index 3214027e..9524f08c 100755
--- a/mmgen/help/__init__.py
+++ b/mmgen/help/__init__.py
@@ -82,10 +82,11 @@ def make_usage_str(cfg, *, caller):
 		single_line = isinstance(cfg._usage_data, str)
 		ulbl = 'USAGE:' + (' ' if single_line else join_str)
 		for line in [cfg._usage_data.strip()] if single_line else cfg._usage_data:
-			yield '{a}{b} {c}'.format(
+			yield '{a}{b}{c} {d}'.format(
 				a = ulbl,
 				b = gc.prog_name,
-				c = cfg._usage_code(*gen_arg_tuple(cfg, cfg._usage_code, line))
+				c = '' if cfg.coin in (None, 'BTC') else f' --coin={cfg.coin.lower()}',
+				d = cfg._usage_code(*gen_arg_tuple(cfg, cfg._usage_code, line))
 					if cfg._usage_code else line)
 			ulbl = ''
 	join_str = {'help': '\n    ', 'user': '\n  '}[caller]
diff --git a/mmgen/help/help_notes.py b/mmgen/help/help_notes.py
index 2f471552..ae45b5dc 100755
--- a/mmgen/help/help_notes.py
+++ b/mmgen/help/help_notes.py
@@ -21,6 +21,14 @@ class help_notes:
 		self.proto = proto
 		self.cfg = cfg
 
+	def cmd_coin_arg(self):
+		from ..cfg import gc
+		match self.proto.coin:
+			case 'BTC':
+				return gc.prog_name
+			case _:
+				return f'{gc.prog_name} --coin={self.proto.coin.lower()}'
+
 	def addrimport_args(self):
 		match self.proto.base_proto:
 			case 'Monero':
diff --git a/mmgen/help/txcreate_examples.py b/mmgen/help/txcreate_examples.py
index b3650786..185fc8c1 100755
--- a/mmgen/help/txcreate_examples.py
+++ b/mmgen/help/txcreate_examples.py
@@ -13,6 +13,7 @@ help.txcreate_examples: txcreate and txdo help examples for the MMGen Wallet sui
 """
 
 from ..cfg import gc
+from . import help_notes
 
 def help(proto, cfg):
 
@@ -21,7 +22,7 @@ def help(proto, cfg):
 	t = tool_cmd(cfg, mmtype=mmtype)
 	addr = t.privhex2addr('bead' * 16)
 	sample_addr = addr.views[addr.view_pref]
-	cmd_base = gc.prog_name + ('' if proto.coin == 'BTC' else f' --coin={proto.coin.lower()}')
+	cmd_base = help_notes.help_notes(proto, cfg).cmd_coin_arg()
 	action = 'Create' if gc.prog_name == 'mmgen-txcreate' else 'Execute'
 
 	match proto.base_proto: