Dear MVPs and their supporters/admirers etc etc...
Allow me to recollect something.
The original question from the initiator of this thread was "I am trying to copy a long list of file names in file explorer"
Note, it wasn't "in any other well designed/written 3rd party software or DOS", but int the "file explorer", distinctively.
Nevertheless none of the replies in this thread directly answer this question for a simple reason - Windows file explorer is a piece of software written not to fit peoples needs at all.
To try to actually answer the question:
The way I was able to trick myself out of this simple situation (copy file names for gods sake!!!) in Widnows 7 explorer was to select the files and then using the Sent to mail recipient option.
This opened an Outlook new message dialog with all files attached to the message and thelist of file names in the body of the message.
This will most likely work only for small files.
Worked for me.
Again, I'm surprised at how ridiculous this is: a very simple task takes a number of trial and error attempts, guessing for a workarounds, a number of tries for 3rd party tools and utils.
And mind you, the Windows File explorer is a part of a commercial OS.