I frequently use the :g command with m0 or m$ to move the matching text
to the beginning or end of the current buffer.
How can I move the matching lines to a new buffer/tab?
I don't know of a one-pass way to do this easily, but you can
either of the following which I've used in the past to do this:
1) do the above, and then delete the gathered lines and paste
them elsewhere or
2)
:let @a='' | g/pattern/d A
go to the other buffer/tab/window and
"aP
to dump the contents that have been deleted to the "a" register.
I don't know if it would choke vim to do something like
:g/regex/d| wincmd p | put | wincmd p
(which might need to have the "wincmd p" changed to
exec "wincmd p"
if there are problems with the pipe)
Just a few ideas.
-tim
