Support unambiguous detection of language if only prefixes are supplied #106
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matejcik
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Nov 29, 2022
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o ceases search as soon as ambiguity is resolved
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Hi, @matejcik -- sorry for not bringing this up-to-date earlier! It should now be ready for the next release. Thanks! |
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Turns out supporting prefixes in language deduction was more complex than I though... The present implementation correctly resolves ambiguity, by requiring exactly one language to match word(s) fully, if all words are prefixes in multiple languages. Only completely unambiguous codes pass language deduction. |
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merged as 4b14fc5 |
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If a BIP-39 Mnemonic is supplied that contains word prefixes (such as would be resolved by calling Mnemonic.expand), the Mnemonic.detect_language function fails. This fix simply allows detect_language to proceed until the prefix no longer appears in multiple language dictionaries.
Also, we detect that ambiguity no longer exists (less than 2 languages remain), and we suspend t the search.
Tests added to confirm that the search proceeds in the face of prefixes available in multiple languages.