TextFilter

A Fabric mod that filters text in signs, books, anvil renaming, and chat messages.

Features

• Regex filtering — whitelist and blacklist character patterns
• Replacements — find-and-replace text substitutions (applied after regex filtering)
• Chat filtering — server-side chat message modification
• Config reload — in-game via /textfilter reload
• Bypass permissions — per-category and global bypass

Config

Config file: config/textfilter.json

{
  "whitelist": "[\\u0020-\\u007e \\n § а-я іїєґ \\u00C0-\\u024F \\u2010-\\u2027 ≈≠∞±×÷€₴]",
  "blacklist": "[ыъэ]",
  "replacements": {
    "xd": "😂"
  }
}

• whitelist — regex pattern of allowed characters
• blacklist — regex pattern of characters to remove from the whitelist
• replacements — key-value pairs for find-and-replace (applied after regex)

Unicode ranges reference

Range	Block	Includes
\u0020-\u007e	Basic Latin	Standard ASCII (space, letters, digits, punctuation)
\u00C0-\u024F	Latin-1 Supplement + Latin Extended-A	Accented European letters (À-ÿ, Ă-ž), «»°±²³µ·¹º¼½¾¿×÷
\u2010-\u2027	General Punctuation	Typographic dashes, quotes, ellipsis (–—'"„…•‹›)

Interactive tool: regexr.com · Unicode blocks: compart.com
If whitelist is empty — all symbols will be deleted.
Allow all symbols by putting . as the whitelist.

Commands

Command	Permission	Description
/textfilter reload	textfilter.reload or OP level 4	Reload config from disk

Permissions

Permission	Description
textfilter.bypass	Bypass all text filtering
textfilter.signBypass	Bypass sign text filtering
textfilter.bookBypass	Bypass book text filtering
textfilter.anvilBypass	Bypass anvil rename filtering
textfilter.chatBypass	Bypass chat message filtering
textfilter.reload	Use /textfilter reload command

Uses fabric-permissions-api.
Manage permissions with LuckPerms or similar.

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