--- Log opened Mon Jun 15 00:00:51 2020
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02:54 < junderw> stevenroose: JP wordlist was made before binary sort was a requirement. soooo. sorry about that.
02:55 < junderw> (I made the list with my Japanese colleagues in the early days of BIP39)
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03:17 < stevenroose> junderw: Chinese, Spanish, Czech were also not sorted
03:18 < junderw> oh wait.. did the binary sort become a requirement?
03:18 < junderw> lol
03:18 < stevenroose> Lexicographical ordering probably
03:18 < junderw> Trezor guys abandoned BIP39, so nothing's been changed for a while.
03:19 < stevenroose> But that's not binary, so for special characters, you'd need a special implementation for that which Rust doesn't have (I searched a bunch of crates)
03:19 < stevenroose> Why would they do that?
03:19 < junderw> > the wordlist is sorted which allows for more efficient lookup of the code words
03:20 < junderw> it just says "sorted"
03:20 < junderw> non-specific.
03:20 < junderw> We sorted by the Japanese "alphabetical order"
03:20 < junderw> But NFKD messes that up horribly.
03:21 < junderw> I think we sorted pre-NFKD
03:21 < junderw> sorting post-NFKD using a Japanese character order sorting algo gives different results because NFKD splits apart certain symbols and changes others.
03:22 < junderw> The point of NFKD is that you can have two byte sequences that mean exactly the same thing, and you should collapse them into one
03:22 < junderw> BIP39 should have been more specific on pre-normalized, post-normalized, what algorithm etc.
03:23 < junderw> post-NFKD, UTF8 encoded, lexicographical
03:23 < junderw> prolly would have been best.
03:39 < stevenroose> junderw: I don't know lexicographical for latin characters with accents. Like in Spanish, French and Czech
03:39 < stevenroose> Does the é go before or after the e? Or after the z?
03:40 < stevenroose> Rust's String ordering just does `self.as_bytes().cmp(other.as_bytes())` so pure utf8 binary ordering, no normalization.
03:40 < stevenroose> Which didn't work for french, spanish etc
03:41 < stevenroose> So I found a bug in tiny-bip39 as well. Should probably fix that.
03:41 < stevenroose> They also use binary search in their `get_word_by_prefix` method.
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04:31 < yancy> junderw: any idea why BIP39 was abandoned? The incompatibility between BIP39 and SLIP39 is confusing imo.
04:32 < yancy> (abandoned by Trezor guys that is)
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10:45 < instagibbs> trezor folks stopped submitting anything to BIP process a while back
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14:06 < stevenroose> Yeah but I think what yancy is asking (and I am wondering as well) is what's wrong with bip39 that they have abandoned it
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--- Log closed Tue Jun 16 00:00:53 2020