So that means it is impossible, right?
I will explain the reason for such question:
I have a thread where I have a list of custom emojis and to make it easier to copy them (as they are pictures resized) I show a tutorial that consists in replying to the thread and quoting it, that way they can see everything I wrote. I thought it would be easy if they could just press a button/link to instantly copy the code for the emoji
Since it might not be possible, what do you suggest me to do? Take a look at the thread to have an idea 
𝔗𝔥𝔢 𝔒𝔳𝔢𝔯𝔪𝔬𝔧𝔦 ℭ𝔞𝔣é ☕