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Debian supports an ever-increasing number of natural languages. Even if you are a native English speaker and do not speak any other language, it is part of your duty as a maintainer to be aware of issues of internationalization (abbreviated i18n because there are 18 letters between the 'i' and the 'n' in internationalization). Therefore, even if you are ok with English-only programs, you should read most of this chapter.
According to Introduction to
i18n from Tomohiro KUBOTA, "I18N (internationalization) means
modification of a software or related technologies so that a software can
potentially handle multiple languages, customs, and so on in the world."
while "L10N (localization) means implementation of a specific language for
an already internationalized software."
l10n and i18n are interconnected, but the difficulties related to each of them are very different. It's not really difficult to allow a program to change the language in which texts are displayed based on user settings, but it is very time consuming to actually translate these messages. On the other hand, setting the character encoding is trivial, but adapting the code to use several character encodings is a really hard problem.
Setting aside the i18n problems, where no general guideline can be given, there is actually no central infrastructure for l10n within Debian which could be compared to the dbuild mechanism for porting. So most of the work has to be done manually.
Handling translation of the texts contained in a package is still a manual task, and the process depends on the kind of text you want to see translated.
For program messages, the gettext infrastructure is used most of the time.
Most of the time, the translation is handled upstream within projects like the
Free Translation
Project, the Gnome translation
Project or the KDE
one. The only centralized resource within Debian is the Central Debian translation
statistics, where you can find some statistics about the translation
files found in the actual packages, but no real infrastructure to ease the
translation process.
An effort to translate the package descriptions started long ago, even if very
little support is offered by the tools to actually use them (i.e., only APT can
use them, when configured correctly). Maintainers don't need to do anything
special to support translated package descriptions; translators should use the
DDTP.
For debconf templates, maintainers should use the po-debconf package to ease
the work of translators, who could use the DDTP to do their work (but the
French and Brazilian teams don't). Some statistics can be found both on the
DDTP site (about what is actually translated), and on the Central Debian translation
statistics site (about what is integrated in the packages).
For web pages, each l10n team has access to the relevant CVS, and the statistics are available from the Central Debian translation statistics site.
For general documentation about Debian, the process is more or less the same as for the web pages (the translators have access to the CVS), but there are no statistics pages.
For package-specific documentation (man pages, info documents, other formats), almost everything remains to be done.
Most notably, the KDE project handles translation of its documentation in the same way as its program messages.
There is an effort to handle Debian-specific man pages within a specific CVS
repository.
This is a list of problems that maintainers may face concerning i18n and l10n. While reading this, keep in mind that there is no real consensus on these points within Debian, and that this is only advice. If you have a better idea for a given problem, or if you disagree on some points, feel free to provide your feedback, so that this document can be enhanced.
To translate package descriptions or debconf templates, you have nothing to do; the DDTP infrastructure will dispatch the material to translate to volunteers with no need for interaction from your part.
For all other material (gettext files, man pages, or other documentation), the best solution is to put your text somewhere on the Internet, and ask on debian-i18n for a translation in different languages. Some translation team members are subscribed to this list, and they will take care of the translation and of the reviewing process. Once they are done, you will get your translated document from them in your mailbox.
From time to time, individuals translate some texts in your package and will ask you for inclusion of the translation in the package. This can become problematic if you are not fluent in the given language. It is a good idea to send the document to the corresponding l10n mailing list, asking for a review. Once it has been done, you should feel more confident in the quality of the translation, and feel safe to include it in your package.
If you have some translations of a given text lying around, each time you update the original, you should ask the previous translator to update the translation with your new changes. Keep in mind that this task takes time; at least one week to get the update reviewed and all.
If the translator is unresponsive, you may ask for help on the corresponding l10n mailing list. If everything fails, don't forget to put a warning in the translated document, stating that the translation is somehow outdated, and that the reader should refer to the original document if possible.
Avoid removing a translation completely because it is outdated. Old documentation is often better than no documentation at all for non-English speakers.
The best solution may be to mark the bug as "forwarded to upstream", and forward it to both the previous translator and his/her team (using the corresponding debian-l10n-XXX mailing list).
While reading this, please keep in mind that there is no general procedure within Debian concerning these points, and that in any case, you should collaborate with your team and the package maintainer.
Choose what you want to translate, make sure that nobody is already working on it (using your debian-l10n-XXX mailing list), translate it, get it reviewed by other native speakers on your l10n mailing list, and provide it to the maintainer of the package (see next point).
Make sure your translation is correct (asking for review on your l10n mailing list) before providing it for inclusion. It will save time for everyone, and avoid the chaos resulting in having several versions of the same document in bug reports.
The best solution is to file a regular bug containing the translation against the package. Make sure to use the 'PATCH' tag, and to not use a severity higher than 'wishlist', since the lack of translation never prevented a program from running.
As a maintainer, never edit the translations in any way (even to reformat the layout) without asking on the corresponding l10n mailing list. You risk for example breaksing the encoding of the file by doing so. Moreover, what you consider an error can be right (or even needed) in the given language.
As a translator, if you find an error in the original text, make sure to report it. Translators are often the most attentive readers of a given text, and if they don't report the errors they find, nobody will.
In any case, remember that the major issue with l10n is that it requires several people to cooperate, and that it is very easy to start a flamewar about small problems because of misunderstandings. So if you have problems with your interlocutor, ask for help on the corresponding l10n mailing list, on debian-i18n, or even on debian-devel (but beware, l10n discussions very often become flamewars on that list :)
In any case, cooperation can only be achieved with mutual respect.
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