BabelFish was (and if you aren't a developer, still is) a great mod for breaking langauge barrier between players speaking different languages. However, it was unmaintained for 7 years, and many code became messy and inefficient. This rewrite is a drop-in replacement for most end users, and provides more method for developers to interact with BabelFish. Notable changes include:

Guessing preferred language from the player's client language code
Allow specifying source language in translations
Translate into multiple languages at once
Handles Beerchat properly
Shipped with Lingva Translate support (Yandex Translate port will be avaliable soon)
Register new translation engine with new mods instead of adding files into the core mod

How to use? (as an end-user)

Avaliable in babelfish_core mod:

Use /bbcodes to list all avaliable languages and their alias.

Avaliable in babelfish_chat mod:

Write %<language code>:[<source language>] in a message to boardcast translation to other players
- e.g. "Hello %fr" would yield "Bonjour"
- Specifying source language may be userful in translating shorter phrases, e.g. "Ja %en" would yield "And" (Estonian), but "Ja %en:de" would yield "Yes" (German).
- You can translate into multiple languages at once by seperating targets with comma without spaces, e.g. "Hello %zh,fr" would yield both "Bonjour" and "你好"
- Unlike the original BabelFish, you must leave spaces between the tag and other texts.
Use /bb <language code>[:<source language>] <sentence> to send a message in another language.
- (Beerchat only) Use /bb #<channel> (other arguments...) to send to a channel.

Avaliable in babelfish_preferred_langauge mod:

Your preferred language is guessed when you first join the server.
- Fallbacks to English if your language is not supported.
Use /bblang <language code> to set your preferred language.
Use /bbget to check your preferred language.
Use /bbget <player name> to check other's preferred language
(Moderators only) Use /bbset <player name> <language code> to set other's preferred language

Avaliable in babelfish_chat_history mod:

Use /babel <username> to translate the last message sent by a user
(Beerchat only) Use /babel <username> <channel> to translate the last message sent by a user on a channel
- If channel is unspecified, defaults to the executer's channel.

Avaliable in babelfish_private_chat

User /bmsg <username> <message> to send private messages to a player in their preferred language.

How to set up? (as a server maintainer)

To start, you must enable the following mods:

babelfish_core
Any BabelFish Redo translation engines (e.g. babelfish_engine_lingva)
- Check their README.md for installation instructions. Most backends requires adding them to secure.http_mods.

To enable all features the original BabelFish have, enable the following mods:

babelfish_chat: Translate using %<code> shortcuts
babelfish_preferred_langauge: Detect and set preferred languages
babelfish_chat_history: Use /babel to translate chat history
babelfish_private_chat: Use /bmsg to send private messages in the receiver's preferred language

You may want to run /bbmigrate to import old preferred languages. Use /bbmigrate override to override data collected under this new mod.

How to develop my mods? (as a developer)

Check out API.md for how to use BabelFish Redo in your mod.