In a regular expression of the type "Iminecraft:._sword" will take into account only one variation of the subject. For large identifiers of the type "!minecraft:.copper" deleting all variations of copper blocks does not work.
I tried writing "!minecraft:..._copper." only minecraft:copper_block was deleted.
The last prepositions of the copper'block type are also ignored'

A dot will only match the next character, please use .*