imap <silent><expr><TAB> zvim#tab()
smap <expr><TAB> neosnippet#expandable_or_jumpable() ? "\<Plug>(neosnippet_expand_or_jump)" : "\<TAB>"
inoremap <silent><expr><CR> zvim#enter()
inoremap <silent> <Leader><Tab> <C-r>=MyLeaderTabfunc()<CR>
inoremap <expr> <Down>     pumvisible() ? "\<C-n>" : "\<Down>"
inoremap <expr> <Up>       pumvisible() ? "\<C-p>" : "\<Up>"
inoremap <expr> <PageDown> pumvisible() ? "\<PageDown>\<C-p>\<C-n>" : "\<PageDown>"
inoremap <expr> <PageUp>   pumvisible() ? "\<PageUp>\<C-p>\<C-n>" : "\<PageUp>"
imap <expr><S-TAB> pumvisible() ? "\<C-p>" : ""
smap <expr><S-TAB> pumvisible() ? "\<C-p>" : ""