Hi guy!
I’ve just started again from where I was. :) I have restarted the computer, but no luck! The chunk that I created to try contains 1 million lines and is 218 MB. I think Notepad (32 bit version) cannot send the data that big to the clipboard, even it could open the file. I have tried it with EditPad Lite without problem, so reinstalled the 64 version of Notepad, trading for the “Sort output only UNIQUE (at column) lines” function of the plugin TextFX, and the 64 version can handle it.
Luckily, I have found a regex for removing duplicate lines (“^(.?)$\s+?^(?=.^\1$)”), so I don’t have to be cheeky asking for it. :)
I have finally managed to go through the above steps, and it works as expected.
Again, thank you for your help! I do appreciate it!