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13 Commits (caa2814d4046179c47ec05026b302e9276dc649a)

Author SHA1 Message Date
Eugen Rochko 1b167707c2
Fix language detection of non-latin alphabets even at few characters ()
Jeong Arm 144d73730d Leave unknown language as nil if account is remote () 
* Force use language detector if account is remote

* Set unknown remote toot's language as nil
aus-social 1f98eae1cf Lint pass ()
Eugen Rochko 38e9662d78
Disable language detection for texts shorter than 140 characters () 
If the input text is blank after preparation (only mention, or
only URL, or empty as in a media post), then use nil as language,
since it's OK to show to everyone.

Otherwise, always fall back to the server's default locale
Akihiko Odaki 48d77ea1eb Fix filterable_languages method of SettingsHelper ()
Matt Jankowski 022008a2a6 Language detection defaults to nil () 
* Default to nil for statuses.language

* Language detection defaults to nil instead of instance UI default
Matt Jankowski d010e270e6 Remove usernames and hashtags from language detection () 
* Add failing specs for hashtag and username extraction in language detector

* Remove usernames and hashtags from text before language detection

* Handle multiple instances of special case, and reduce whitespace
Akihiko Odaki d5cabfe5c6 Use CLD3 () 
Compact Language Detector v3 (CLD3) is the successor of CLD2, which was
used in the previous implementation. CLD3 includes improvements since CLD2,
and supports newer compilers. On the other hand, it has additional
requirements and cld3-ruby, the FFI of CLD3 for Ruby, is still new and may
be still inmature.

Though CLD3 is named after CLD2, it is implemented with a neural network
model, different from the old implementation, which is based on a Naïve
Bayesian classifier.

CLD3 supports newer compilers, such as GCC 6. CLD2 is not compatible with
GCC 6 because it assigns negative values to varibales typed unsigned.
(see internal/cld_generated_cjk_uni_prop_80.cc) The support for GCC 6 and
newer compilers are essential today, when some server operating system
such as Ubuntu Server 16.10 has GCC 6 by default.

On the one hand, CLD3 requires C++11 support. Environments with old
compilers such as Ubuntu Server 14.04 needs to update the system or install
a newer compiler.

CLD3 needs protocol buffers as a new dependency. However,it is not
considered problematic because major server operating systems, CentOS and
Ubuntu Server provide them.

The FFI cld3-ruby was written by me (Akihiko Odaki) for use in Mastodon.
It is still new and may be inmature, but confirmed to pass existing tests.
Matt Jankowski 7a7d12d27f Delegate Account#user_locale method and allow nil ()
Matt Jankowski 8c5ad23b24 Language improvements, replace whatlanguage with CLD () 
* add failing en specs

* add cld2 gem

* Replace WhatLanguage with CLD
Matt Jankowski 629d35e6f5 [WIP] Html lang on statuses () 
* Add html lang attributes around statuses

* Remove urls from language detection
Eugen 96268e76e6 Fix wording on admin instances view, fix typos in language detector spec ()
Matt Jankowski 297c11dba2 Language detection refactor () 
* Extract detect_language to separate class

* Use default locale, not just en

* Add spec to confirm that whatlanguage cant identify empty string

* Allow account locale to override default in language detector

* PostStatusService supplies an account to detect language