This mod fixes texture packs with CITs for enchanted books on versions 1.20.5 to 1.21.3. It is meant as a temporary fix until this functionality comes back to mods such as CIT Resewn or Optifine. The showcase below is using my texture pack Enchanted Books from Mars. But this mod is compatible with almost all other texture packs adding more enchanted book textures.

You can configure this mod directly in-game or edit the JSON file config/cithotfix.json in your profile folder. If you're using Fabric and want to adjust the config values in-game, you'll need to install Mod Menu.

possible_roots - Sets which resource pack paths should be checked by this mod for CITs of enchanted books