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Merge pull request #130 from bip39JP/master

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BIP39: Clarify necessity for ideographic spaces.
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Wladimir J. van der Laan 2015-05-26 08:09:14 +00:00
commit deec9f13c2
2 changed files with 650 additions and 648 deletions
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bip-0039/bip-0039-wordlists.md
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###Japanese
1. Users will most likely separate the words with UTF-8 ideographic space.
(UTF-8 bytes: 0xE38080) When generating the seed, normalization as per the spec will
automatically change these into normal ASCII spaces. Depending on the font, displaying the
words should use the UTF-8 ideographic space if it looks like the symbols are too close.
1. **Developers implementing phrase generation or checksum verification must separate words using ideographic spaces / accommodate users inputting ideographic spaces.**
(UTF-8 bytes: **0xE38080**; C/C+/Java: **"\u3000"**; Python: **u"\u3000"**)
However, code that only accepts Japanese phrases but does not generate or verify them should be fine as is.
This is because when generating the seed, normalization as per the spec will
automatically change the ideographic spaces into normal ASCII spaces, so as long as your code never shows the user an ASCII space
separated phrase or tries to split the phrase input by the user, dealing with ASCII or Ideographic space is the same.
2. Word-wrapping doesn't work well, so making sure that words only word-wrap at one of the
ideographic spaces may be a necessary step. As a long word split in two could be mistaken easily

1288
bip-0039/japanese.txt
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