Lang trimmer

For Minecraft-format language jsons.

Use cases for “Remove keys matching en_us”:

• Minecraft supports English variants like en_gb and en_nz, which only have minor spelling differences compared to en_us. Most of the lang entries are identical to en_us.
• Minecraft falls back to en_us if it can’t find a lang entry.
• We can therefore save a lot of space by removing lang entries from en_gb.json that are identical to entries in en_us.json.
• (Also handy for cleaning up situations where a translator copy-pastes lang entries from en_us into their WIP translation.)

Use case for “Remove keys missing from en_us”:

• If a mod is primarily developed in en_us and third-party translators contribute translations, when the mod developer removes a key in en_us it is possible they’ll forget to remove the key from all translations.
• This can cause translation files to build up cruft over time and cause translators to spend time and effort reviewing translations of now-unused content.
• Be careful with this function:
  • This tool can’t tell the difference between a key you intended to remove & a key you intended to merely rename.
  • Watch out for things like multiline tooltips, where the mod queries the localization system and uses as many language keys as it can find.
  • Examine a git diff afterwards to make sure nothing important was deleted.

This tool will always remove duplicate lang entries (choosing the last one) and reformat the language file, as a side-effect of using browser json utililties.

If the button doesn’t do anything, check the browser console; it’s either a bug in my code or ill-formatted JSON.