filejump.vim

" ウインドウ単位で開いたファイルの履歴をたどる
function! FileJumpPush()
    if !exists('w:histories')
        let w:histories = []
    endif
    let buf = bufnr('%')
    if count(w:histories, buf) == 0
        call add(w:histories, buf)
    endif
endfunction

function! FileJumpPrev()
    if exists('w:histories')
        let buf = bufnr('%')
        let current = match(w:histories, '^'.buf.'$')
        if current != 0 && exists('w:histories[current - 1]')
            execute 'buffer ' . w:histories[current - 1]
        endif
    endif
endfunction

function! FileJumpNext()
    if exists('w:histories')
        let buf = bufnr('%')
        let current = match(w:histories, '^'.buf.'$')
        if exists('w:histories[current + 1]')
            execute 'buffer ' . w:histories[current + 1]
        endif
    endif
endfunction

augroup FileJumpAutoCmd
  autocmd!
augroup END
autocmd FileJumpAutoCmd BufReadPre * call FileJumpPush()
nnoremap <silent> ,p :<C-u>call FileJumpPrev()<CR>
nnoremap <silent> ,n :<C-u>call FileJumpNext()<CR>