Copy multiple times before pasting all of the contents in vim

Question

In vim, would there be a way to copy multiple times, accumulate each of them into the clipboard, and then later paste all of them at once where each contents are separated by newline?

Answer 1

Use uppercase registers to append. For example, let's clear and yank a line to register "a, append a line, append another line, then paste:

"ayy
"Ayy
"Ayy
"ap

Flag > in cpoptions inserts a line break before the appended text.

Answer 2

If all those lines share a pattern you can :help :copy (or its shortest alternative :help :t) them all at once with:

:g/pattern/t<line number>