cmap <S-Insert> <C-R>+
nmap <M-Insert> "+P
imap <M-Insert> <C-R>+
vmap <M-Insert> "+p
cmap <M-Insert> <C-R>+
nmap <S-Insert> "*P
imap <S-Insert> <C-R>*
vmap <S-Insert> "*p
map! <M-S-Insert> <C-R>0
map  <M-S-Insert> "0p

vmap <C-Insert> "+y
vmap <C-S-Insert> "*y

nmap <silent> <Leader>+ :let @+ = @%<CR>