Support for Segwit (P2SH-P2WPKH) addresses:

- Generate Segwit addresses by invoking 'mmgen-addrgen' with the
  '--type segwit' option
- Import Segwit addresses into the tracking wallet as usual
- Segwit and legacy MMGen addresses are distinguished by 'S' and 'L'
  identifiers in the tracking wallet and command line

Transaction example:

  mmgen-txcreate F00BAA12:L:21,1.23 F00BAA12:S:1

(spend 1.23 BTC to legacy address 21 of your default wallet (with Seed ID
F00BAA12) and send the change to Segwit address 1)

Segwit and legacy addresses for a given seed are generated from different
sub-seeds so are cryptographically unrelated to each other.

Since MMGen's legacy P2PKH addresses are uncompressed, use of the new Segwit
addresses significantly reduces transaction size.

Until Segwit activation on mainnet, users can try out the new functionality on
testnet or in regtest mode.

data_files/mmgen.cfg

@@ -17,6 +17,9 @@
 # Uncomment to force 256-color output when 'color' is true:
 # force_256_color true
 
+# Uncomment to use regtest mode (this also sets testnet to true):
+# regtest true
+
 # Uncomment to use testnet instead of mainnet:
 # testnet true