[1] [CITE@ja[LZMA - Wikipedia]]
( ([TIME[2013-11-08 03:38:46 +09:00]] 版))
<http://ja.wikipedia.org/wiki/LZMA>

[2] [CITE@en[366559 – Firefox/Gecko should support LZMA as an HTTP transfer-encoding method]]
([TIME[2015-08-04 23:45:54 +09:00]] 版)
<https://bugzilla.mozilla.org/show_bug.cgi?id=366559>

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[3] [CITE@en[HTTP compression - Wikipedia, the free encyclopedia]]
([TIME[2015-07-27 23:42:37 +09:00]] 版)
<https://en.wikipedia.org/wiki/HTTP_compression#Content-coding_tokens>
]FIGCAPTION]

> 
> lzma – compression based on (raw) LZMA is available in Opera 20, and in elinks via a compile-time option'''['''8''']'''

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[4] [CITE@en[HTTP compression - Wikipedia, the free encyclopedia]]
([TIME[2015-07-27 23:42:37 +09:00]] 版)
<https://en.wikipedia.org/wiki/HTTP_compression#Content-coding_tokens>
]FIGCAPTION]

> xz - LZMA2-based content compression, supported by a non-official Firefox patch;'''['''12''']''' and fully implemented in mget since 2013-12-31.'''['''13''']'''

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[5] [CITE@en[rockdaboot/mget]]
([TIME[2015-08-04 23:55:11 +09:00]] 版)
<https://github.com/rockdaboot/mget>
]FIGCAPTION]

> 
> New Year gimmick: added support for XZ Content-Encoding / Accept-Encoding compression type

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[6] [CITE[Feature configuration file (features.conf)]]
([TIME[2012-10-31 02:59:29 +09:00]] 版)
<http://elinks.or.cz/documentation/html/manual.html-chunked/ch01s07.html#CONFIG-LZMA>
]FIGCAPTION]

> LZMA Decompression (CONFIG_LZMA)
> This makes ELinks decompress local *.lzma files. Also, ELinks sends "Accept-Encoding: lzma" in HTTP requests and decompresses any documents received in that format, but this encoding has not been registered at http://www.iana.org/assignments/http-parameters, so most servers probably won't use it.
> To use this, first install LZMA Utils. Version 4.32.5 works; 4.42.2alpha also works and understands a newer LZMA file format. This version of ELinks does not support LZMA SDK from 7-Zip.

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[7] [CITE@en[LZMA2 Compression - MozillaWiki]]
([TIME[2015-08-04 18:43:00 +09:00]] 版)
<https://wiki.mozilla.org/LZMA2_Compression>

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[8] [CITE@en[Xz format inadequate for long-term archiving]], [TIME[2022-07-24T23:38:34.000Z]] <https://www.nongnu.org/lzip/xz_inadequate.html>
--
[9] 
[CITE@ja[新山祐介 (Yusuke Shinyama)さんはTwitterを使っています: 「xz圧縮形式は貴重なデータを長期保存するには使うべきではない。xzの仕様は完全に文書化されておらず、しかも仕様と異なる実装が存在する。またxz形式は拡張可能性が高すぎて結果の予測が不可能。さらにxzのエラーチェック機構は不完全でデータ改ざんの危険性がある。 https://t.co/41fWaLxPYu」 / [[Twitter]]]], 午後4:15 · 2022年7月24日 [TZ[+09:00]], [TIME[2022-07-24T23:34:55.000Z]] <https://twitter.com/mootastic/status/1551103764106743808>