All of SemiHardcore's add-ons had the same problem as SemiHardcore itself, so I had to fix them one by one.

Additions

• Added a new message: trim-unchanged.
  • Appears when the player tries to change their armor trim to the one they currently have using /changetrim.
  • Set to "&cNothing changed; the specified armor trim is your current one." by default.

Fixes

• Fixed a bug where the armor trim selection menu would sometimes appear again immediately after selecting a trim.
• Fixed the /changetrim command returning a success message even when the player's trim didn't change.
• Fixed the plugin thinking the newest versions are unsupported

I never checked what would happen to the trim selection menu if two more armor trims were added...

Fixes

• Cannot choose Wayfinder or Wild armor trim from the trim selection menu.

With this update, this plugin is now future-proof until at least Minecraft 1.58 (assuming one new trim per update).

Changes

• The internal list of existing armor trims is no longer hardcoded, and is instead generated by finding all items with an ID ending in _ARMOR_TRIM_SMITHING_TEMPLATE.

Fixes

• Fixed a bug where if a player was revived, their armor would be trimmed in emerald material even though they were on 1 life.
• Fixed an exception in the console if you clicked on an empty slot in your inventory while having the armor trim choice inventory open.

The code itself is literally the same lol.

Additions

• Added the link to this website to the plugin's plugin.yml.