electrum-new command uses bip39 dictionaries.

[evoskuil]

I discovered this because --language pt was not parsing when I added a test for it. Portuguese isn't in the bip-39 dictionaries but is in the Electrum dictionaries.

        (
            "language,l",
            value<explorer::config::language>(&option_.language),
            "The language identifier of the mnemonic dictionary to use. Options are 'en', 'es', 'pt', 'ja', 'zh_Hans' and 'any', defaults to 'en'."
        )

The explorer::config::language class returns a selection of bip39 dictionaries. This is a distinct set from Electrum, but has overlapping members, allowing the previous set of tests to pass. The bip39 and Electrum en and zh_Hans dictionaries are identical, but es is distinct, with overlapping words.

https://github.com/libbitcoin/libbitcoin-explorer/blob/master/include/bitcoin/explorer/commands/electrum-new.hpp#L161

This code is in master, so not supported. But a rollback to this bug should allow for key recovery if anyone has used it live.

[evoskuil]

Once this is resolved we will need to ensure we have test coverage in both commands for all languages and prefixes (including old) and verify each against Electrum.

[evoskuil]

I removed pt and reconciled dictionaries with electrum and bip39 repos.