autosign: skip dfl wallet prompt if --seed-len or --mnemonic-fmt specified

mmgen/autosign.py

@@ -817,14 +817,19 @@ class Autosign:
 		remove_wallet_dir()
 		create_wallet_dir()
 
-		wf = find_file_in_dir(get_wallet_cls('mmgen'), self.cfg.data_dir)
-		if wf and keypress_confirm(
+		def get_mn_wallet():
+			return Wallet(self.cfg, in_fmt=self.mn_fmts[self.cfg.mnemonic_fmt or self.dfl_mn_fmt])
+
+		if self.cfg.mnemonic_fmt or self.cfg.seed_len:
+			ss_in = get_mn_wallet()
+		elif (wf := find_file_in_dir(get_wallet_cls('mmgen'), self.cfg.data_dir)) and keypress_confirm(
 				cfg         = self.cfg,
 				prompt      = f'Default wallet ‘{wf}’ found.\nUse default wallet for autosigning?',
 				default_yes = True):
 			ss_in = Wallet(Config(), fn=wf)
 		else:
-			ss_in = Wallet(self.cfg, in_fmt=self.mn_fmts[self.cfg.mnemonic_fmt or self.dfl_mn_fmt])
+			ss_in = get_mn_wallet()
+
 		ss_out = Wallet(self.cfg, ss=ss_in, passwd_file=str(self.keyfile))
 		ss_out.write_to_file(desc='autosign wallet', outdir=self.wallet_dir)
 

mmgen/main_autosign.py

@@ -42,7 +42,8 @@ opts_data = {
                       the file in volatile memory for use during the signing
                       session, thus permitting the deletion of the original
                       file for increased security.
--l, --seed-len=N      Specify wallet seed length of ‘N’ bits (for setup only)
+-l, --seed-len=N      Specify wallet seed length of ‘N’ bits (for setup with
+                      mnemonic seed phrase only)
 -L, --led             Use status LED to signal standby, busy and error
 -m, --mountpoint=M    Specify an alternate mountpoint 'M'
                       (default: {asi.dfl_mountpoint!r})

test/cmdtest_d/autosign.py

@@ -227,8 +227,6 @@ class CmdTestAutosignBase(CmdTestBase):
 			t.expect('Use default wallet for autosigning? (Y/n): ', 'y')
 			t.passphrase('MMGen wallet', wallet_passwd)
 		else:
-			if use_dfl_wallet is not None: # None => no dfl wallet present
-				t.expect('Use default wallet for autosigning? (Y/n): ', 'n')
 			mn_file = mn_file or {'mmgen': dfl_words_file, 'bip39': dfl_bip39_file}[mn_type]
 			mn = read_from_file(mn_file).strip().split()
 			if not seed_len: