How to add weapons to the whitelist Can a tutorial be given?
Is it possible to add it directly in the game?

just read the main config file so you will know how to do it.
no you can't add it directly in the game.

so what's the problem?

I'm sorry. I did my best

This is an extra item list to add custom support for such modded items. Be careful on this, it may crash if the item can't be enhanced. Style should be 'modid:item'.

# Example: tconstruct:broadsword
S:extraItems <
 >

The generated file does not take effect

Add other module weapons that are not supported

show me what you tried and didn't work.

.minecraft\config\Enhanced Armaments\main.cfg

# This is item whitelist, basically. If you don't want a whitelist, just leave this empty. If you want a whitelist, fill it with items you want. Style should be 'modid:item'
S:itemWhitelist <epicfight:greatsword  （**After adding the weapon in the game does not take effect, is my format wrong?**）
 >

no no no no no no don't do it like that. you MUST add new lines into the itemWhitelist section. like this:

This is item whitelist, basically. If you don't want a whitelist, just leave this empty. If you want a whitelist, fill it with items you want. Style should be 'modid:item'

S:itemWhitelist <
     epicfight:greatsword
 >

OK, thank you for your help