Releases/FeatureDictionary

Fix the dictionary proliferation problem

Summary

Fix the proliferation of dictionaries in the OS.

Owners

• Names: CaolanMcNamara, ChristopherAillon, JeremyKatz, BillNottingham

Current status

• Targeted release: Fedora 9
• Last modified: 2008-04-07
• Percentage of completion: 100%
• This is complete, all major applications and default GNOME/KDE spell checking now goes through hunspell. All that remains is to package dictionaries for the lesser used languages where there hasn't already been a sufficiently vibrant fedora-using language community that has taken up packaging a dictionary for their language.

Usage cases/rationale

We have separate dictionaries for each language for OpenOffice.org, Firefox, Thunderbird, and aspell (which gnome and KDE use). This is dumb.

Benefit to Fedora

We get code reuse, a smaller distribution, and a decreased memory footprint.

Scope

Requires changing the OpenOffice.org, thunderbird, firefox, and dictionary packages.

Test Plan

Test spell checking in all apps.

Dependencies

None.

Details

1. Split out hunspell from OpenOffice.org - rhbz#214764 complete
2. Make OpenOffice.org use it - rhbz#214764 complete
3. Split out the dictionaries into separate packages - rhbz#218769 (english) complete
4. Make OpenOffice.org use system dictionaries - complete
5. Make gedit/xchat use it, i.e. enchant. enchant by default already generally prefers using hunspell over aspell, just needs to be told where the dictionaries are - complete
6. Make evolution use it, i.e. gnome-spell. gnome-spell can be patched to use enchant to achieve this - rhbz#426347 complete
7. Make tomboy/pidgin use it, i.e. gtkspell. Same story as gnome-spell - rhbz#245888 complete
8. Make Firefox (and other gecko apps) use it - rhbz#218762 complete, upstream state is now resolved
9. Make KDE use enchant and/or hunspell - complete - KDE 4 already defaults to enchant in Sonnet. (For K3Spell, see "legacy KSpell" below.) The aspell backend was dropped entirely in Rawhide. For kdelibs3:
   • The legacy KSpell uses command-line spellcheckers. Kevin Kofler wrote a patch to support hunspell, and kde-settings in Rawhide was changed to make it the default.
   • The newer KSpell2 API is plugin-based and uses libraries. It is what KDE 4's Sonnet is based on. Kevin Kofler backported Sonnet's enchant backend. The aspell and ispell backends were dropped in Rawhide.

   See the fedora-devel-list message.

10. Remove copy of hunspell from enchant - rhbz#426402 complete
11. Remove copy of hunspell from xulrunner complete
12. Split enchant to have a separate enchant-aspell rpm to enable optionally removing the aspell support - rhbz#426402 complete
13. Prefer hunspell over aspell as the default for install in comps. See table below for mis-match in language support. rhbz#439037 complete
14. Repackage/replace the aspell dictionaries with hunspell dictionaries 80% see table below for language support

Optional

1. Write an aspell compatibility layer so aspell apps can use the same dictionaries no volunteer -> deferred, is this neccessary at all ? All major desktop apps work now out of the box
2. Make vim use hunspell - rhbz#219777 patch available, not necessary if vim continues to not use any spell-checking, but preferred over introducing built-in vim spellchecker which has yet another format which hunspell dicts are converted to for use

Dictionaries

1. Language Support Matrix (glibc upwards)

Language Code	Language	aspell	hunspell	notes
aa	Afar			afarfriends.org hosted ALSEC report.
af	Afrikaans	aspell-af	hunspell-af
am	Amharic		available	And one for non-commercial use
an	Aragonese			www.iea.es, see Spain: Lexicography In Iberian Languages
ar	Arabic	aspell-ar	hunspell-ar
as	Assamese			www.xobdo.net
ast	Asturian			www.academiadelallingua.com, see Spain: Lexicography In Iberian Languages
az	Azeri (Latin)		hunspell-az
be	Belarusian		hunspell-be
ber	Amazigh (Tifinagh)		hunspell-ber
ber	Amazigh (Latin)
bg	Bulgarian	aspell-bg	hunspell-bg
bn	Bengali	aspell-bn	hunspell-bn
bo	Tibetan			bo.openoffice.org. Latest language support update.
br	Breton	aspell-br	hunspell-br
bs	Bosnian			From a pure spelling-dictionary point of view, would there be differences from hunspell-hr ?
byn	Blin			Blin Orthography: A History and an Assessment
ca	Catalan	aspell-ca	hunspell-ca
crh	Crimean Tatar			corpus
cs	Czech	aspell-cs	hunspell-cs
csb	Kashubian		hunspell-csb
cy	Welsh	aspell-cy	hunspell-cy
da	Danish	aspell-da	hunspell-da
de	German	aspell-de	hunspell-de
dz	Dzongkha			crubadan corpus building
el	Greek	aspell-el	hunspell-el
en	English	aspell-en	hunspell-en
es	Spanish	aspell-es	hunspell-es
et	Estonian		hunspell-ee
eu	Basque		hunspell-eu
fa	Farsi		hunspell-fa
fi	Finnish			Finnish Community has a parallel Voikko solution. With an enchant backend, an OpenOffice.org extension, and a Firefox extension.
fil	Filipino		hunspell-tl	Filipino is effectively an official Tagalog-based language
fo	Faeroese	aspell-fo	hunspell-fo
fr	French	aspell-fr	hunspell-fr
fur	Friulian		hunspell-fur
fy	Frisian		hunspell-fy
ga	Irish	aspell-ga	hunspell-ga
gd	Scots Gaelic	aspell-gd	hunspell-gd
gez	Ge'ez			Ge'ez Frontier Foundation
gl	Galician	aspell-gl	hunspell-gl
gu	Gujarati	aspell-gu	hunspell-gu
gv	Manx		convertable
ha	Hausa			crubadan possible wordlist, www.dictionary.kasahorow.com
he	Hebrew	aspell-he	hunspell-he
hi	Hindi	aspell-hi	hunspell-hi
hr	Croatian	aspell-hr	hunspell-hr
hsb	Upper Sorbian		hunspell-hsb
hu	Hungarian		hunspell-hu
hy	Armenian		hunspell-hy
id	Indonesian	aspell-id	hunspell-id
ig	Igbo			crubadan, www.dictionary.kasahorow.com
ik	Inupiaq			Iñupiaq parser project. Broken download link to MSWord dictionary
is	Icelandic	aspell-is	hunspell-is
it	Italian	aspell-it	hunspell-it
iu	Inuktitut			www.livingdictionary.com
ja	Japanese
ka	Georgian			ka.openoffice.org : Crubadan is aware of 29023 words
kk	Kazakh		available
kl	Kalaallisut			Greenlandic parser project
km	Khmer		hunspell-km
kn	Kannada			BharateeyaOO.o
ko	Korean
ku	Kurdish (Latin)		hunspell-ku
ku	Kurdish (Arabic)
kw	Cornish			crubadan corpus building
ky	Kyrgyz			OOo localization beginnings
lg	Luganda			A general translation effort.
li	Limburgish			crubadan corpus building
lo	Lao			Lao OOo localization
lt	Lithuanian		hunspell-lt
lv	Latvian		hunspell-lv
mai	Maithili			maithiliacademy.org
mg	Malagasy		hunspell-mg
mi	Maori		hunspell-mi
mk	Macedonian		hunspell-mk
ml	Malayalam	aspell-ml	hunspell-ml
mn	Mongolian		hunspell-mn
mr	Marathi	aspell-mr	hunspell-mr
ms	Malay		hunspell-ms
mt	Maltese		hunspell-mt
nb	Bokmaal	aspell-no	hunspell-nb
nds	Lowlands Saxon		hunspell-nds
ne	Nepali		hunspell-ne
nl	Dutch	aspell-nl	hunspell-nl
nn	Nynorsk	aspell-no	hunspell-nn
nr	Ndebele (Southern)		hunspell-nr
nso	Sotho (Northern)		hunspell-nso
oc	Occitan		hunspell-oc
om	Oromo			crubadan corpus building. Oromo wiki entry
or	Oriya	aspell-or	hunspell-or
pa	Punjabi	aspell-pa	hunspell-pa
pap	Papiamento			crubadan corpus building
pl	Polish	aspell-pl	hunspell-pl
pt	Portuguese	aspell-pt	hunspell-pt
ro	Romanian		hunspell-ro
ru	Russian	aspell-ru	hunspell-ru
rw	Kinyarwanda		hunspell-rw
sa	Sanskrit			An apparent effort to create a Sanskrit hunspell dictionary
sc	Sardinian		hunspell-sc
se	Sami, Northern		available	A colossal 50Megs
shs	Secwepemctsin			www.native-languages.org
si	Sinhala			A very small wordlist
sid	Sidamo			Some info
sk	Slovak	aspell-sk	hunspell-sk
sl	Slovenian	aspell-sl	hunspell-sl
so	Somali			An apparent effort to create a Somali hunspell dictionary
sq	Albanian		hunspell-sq
sr	Serbian	aspell-sr	hunspell-sr
ss	Swati		hunspell-ss
st	Sotho (Southern)		hunspell-st
sv	Swedish	aspell-sv	hunspell-sv
ta	Tamil	aspell-ta	hunspell-ta
te	Telugu	aspell-te	hunspell-te
tg	Tajik			An apparent effort to create a Tajik hunspell dictionary
th	Thai		hunspell-th
ti	Tigrigna			non-commercial use
tig	Tigre			crubadan corpus building
tk	Turkmen		hunspell-tk
tl	Tagalog		hunspell-tl
tn	Tswana		hunspell-tn
tr	Turkish		available	But like Finnish through voikko the typical solution for Turkish has been the Zemberek library, and to have an enchant backend, an Openoffice.org Extension, and a Firefox extension)
ts	Tsonga		hunspell-ts
tt	Tatar		available	Hard to see where this came from originally, and what license it is exactly, GPLv2+ (?). Perhaps it is an original work of ALT Linux and that actually is the canonical upstream ?
ug	Uyghur			www.uyghurdictionary.org
uk	Ukrainian		hunspell-uk
ur	Urdu		hunspell-ur
uz	Uzbek		hunspell-uz
ve	Venda		hunspell-ve
vi	Vietnamese		hunspell-vi
wa	Walloon		hunspell-wa
wo	Wolof			www.alfanet.anafa.org make Wolof localizations of Firefox and Abiword. www.dictionary.kasahorow.com
xh	Xhosa		hunspell-xh
yi	Yiddish			The uspell spell-checker
yo	Yoruba			An apparent effort to create a Yoruba hunspell dictionary. www.dictionary.kasahorow.com
zh	Chinese
zu	Zulu		hunspell-zu

2. Language Support Matrix (extra OOo recognized not in glibc)

Language Code	Language	hunspell	notes
ak	Akan		small list of unknown licence. www.dictionary.kasahorow.com
az	Azeri (Cyrillic)
bm	Bambara		Online Dictionary
brx	Bodo		Online Dictionary
cop	Coptic	available
cv	Chuvash		From this forum looks like there was a cv_RU-1.00.zip but download site is gone/down.
dgo	Dogri		Central Institute for Indian Languages
dv	Dhivehi		English-Dhivehi dictionary
ee	Ewe		online dictionary
eo	Esperanto	available
fj	Fijian	hunspell-fj
gsc	Gascon		Non-Commercial BY-NC-ND license
gug	Guarani		crubadan corpus building
hil	Hiligaynon	convertable
ia	Interlingua	available
ks	Kashmiri		online dictionary
kok	Konkani		[http://www.savemylanguage.org/ online dictionary
la	Latin	hunspell-la
lb	Luxembourgish	available	We don't have the EUPL on our licence list yet
lg	Ganda		online dictionary
ln	Lingala		crubadan corpus building
mos	Mossi		info, dictionary effort (hunspell has no problem with utf-8 .dic files FWIW)
mni	Manipuri		some info
my	Burmese		online dictionary
ny	Nyanja	convertable
quh	Quechua South Bolivia		current effort
qul	Quechua North Bolivia		current effort
rm	Raeto-Romance
sat	Santali		online dictionary
sd	Sindhi		online dictionary
sg	Sango		www.dictionary.kasahorow.com
sjd	Sami, Kildin		Northern Sami
sma	Sami, Southern		Northern Sami
smj	Sami, Lule		Northern Sami
smn	Sami, Inari		Northern Sami
sms	Sami, Skolt		Northern Sami
sw	Swahili	hunspell-sw
tet	Tetum	available

User experience

Should not affect user experience.

Contingency plan

Continue to ship older dictionaries.

Documentation

[1]

Release Notes

There is a new default spell checking back-end, hunspell, for both the GNOME and KDE desktops, as well as applications such as OpenOffice.org, Firefox, and other XULRunner-based applications. This common back-end includes a set of shared, multi-lingual dictionaries for use with hunspell. This feature uses a single set of common dictionaries regardless of the application, which gives consistent suggestions for misspelled words and uses less diskpace by eliminating duplicate dictionaries.

Comments

Note that JDS is going down this route as well

The OpenOffice.org hunspell dictionary list of working dictionaries

The mozilla hunspell dictionary list of tri-licensed dictionaries

The firefox extension list of available language extensions

How to build a dictionary

How to convert an ispell affix to hunspell .aff

Language Codes

A somewhat related issue .

Will help on adding Indic hunspell dictionaries in Fedora - paragn.

php5 and bluefish still link to aspell at least - kmaraas. (It's not practical for me to port everything, just the core default installed components and the default spell-checking solutions for the main desktop environments and applications - caolanm)

Ubuntu is now following the Fedora practice as well.

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