Given a series of lines that look similar to this:
2001 "Some Kind of Title," Author's Name, Publication Name, 1 Mar.
2002 "Some Kind of Title," Author's Name, Publication Name, 12 Oct.
2003 "Some Kind of Title," Author's Name, Publication Name, 8 Apr.
2004 "Some Kind of Title," Author's Name, Publication Name, 3 Jun.
Is there a way that I could grab those first four characters (the year), and copy them to the end of the line, so that it looks like this:
2001 "Some Kind of Title," Author's Name, Publication Name, 1 Mar. 2001
2002 "Some Kind of Title," Author's Name, Publication Name, 12 Oct. 2002
2003 "Some Kind of Title," Author's Name, Publication Name, 8 Apr. 2003
2004 "Some Kind of Title," Author's Name, Publication Name, 3 Jun. 2004
:%g/^\d\{4}\d\@!/s/^\(\d\{4}\).*\zs/ \1/
.