TextFilter

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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