allow buffer switch to last

README.md

@@ -121,7 +121,11 @@ nmap <leader>6 <Plug>BuffetSwitch(6)
 nmap <leader>7 <Plug>BuffetSwitch(7)
 nmap <leader>8 <Plug>BuffetSwitch(8)
 nmap <leader>9 <Plug>BuffetSwitch(9)
-nmap <leader>0 <Plug>BuffetSwitch(10)
+nmap <leader>0 <Plug>BuffetSwitch(0) " to the last one
+nmap <leader>] <Plug>BuffetNext
+nmap <leader>[ <Plug>BuffetPrev
+nmap <leader><Left> <Plug>BuffetMoveLeft
+nmap <leader><Right> <Plug>BuffetMoveRight
 ```
 
 This will allow you to switch between buffers 1 - 10. You can get more `<Plug>`

autoload/buffet.vim

@@ -353,15 +353,47 @@ endfunction
 function! buffet#bswitch(index)
     let i = str2nr(a:index) - 1
     if i < 0 || i > len(s:buffer_ids) - 1
-        echohl ErrorMsg
-        echom "Invalid buffer index"
-        echohl None
-        return
+        let buffer_id = s:buffer_ids[len(s:buffer_ids)-1]
+    else
+        let buffer_id = s:buffer_ids[i]
     endif
-    let buffer_id = s:buffer_ids[i]
     execute 'silent buffer ' . buffer_id
 endfunction
 
+function! buffet#moveLeft()
+    let cIdx = index(s:buffer_ids, s:last_current_buffer_id)
+    let idx = str2nr(cIdx)
+    if idx <= 0
+        return
+    endif
+    let tmp = s:buffer_ids[idx]
+    let s:buffer_ids[idx] = s:buffer_ids[idx-1]
+    let s:buffer_ids[idx-1] = tmp
+    return s:Render()
+endfunction
+
+function! buffet#moveRight()
+    let cIdx = index(s:buffer_ids, s:last_current_buffer_id)
+    if cIdx > len(s:buffer_ids)-2
+        return
+    endif
+    let tmp = s:buffer_ids[cIdx]
+    let s:buffer_ids[cIdx] = s:buffer_ids[cIdx+1]
+    let s:buffer_ids[cIdx+1] = tmp
+    return s:Render()
+endfunction
+
+function! buffet#bnext()
+    let current_buffer_id_i = index(s:buffer_ids, s:last_current_buffer_id)
+    let next_buffer_id_i = (current_buffer_id_i+2)%len(s:buffer_ids)
+    call buffet#bswitch(next_buffer_id_i)
+endfunction
+
+function! buffet#bprev()
+    let current_buffer_id_i = index(s:buffer_ids, s:last_current_buffer_id)
+    call buffet#bswitch(current_buffer_id_i)
+endfunction
+
 " inspired and based on https://vim.fandom.com/wiki/Deleting_a_buffer_without_closing_the_window
 function! buffet#bwipe(bang, buffer)
     let btarget = s:GetBuffer(a:buffer)

plugin/buffet.vim

@@ -239,10 +239,15 @@ endfunction
 
 let g:buffet_bwipe_filters = ["buffet#bwipe_nerdtree_filter"]
 
-for s:n in range(1, g:buffet_max_plug)
+for s:n in range(0, g:buffet_max_plug)
     execute printf("noremap <silent> <Plug>BuffetSwitch(%d) :call buffet#bswitch(%d)<cr>", s:n, s:n)
 endfor
 
+noremap <silent> <Plug>BuffetNext :call buffet#bnext()<cr>
+noremap <silent> <Plug>BuffetPrev :call buffet#bprev()<cr>
+noremap <silent> <Plug>BuffetMoveLeft :call buffet#moveLeft()<cr>
+noremap <silent> <Plug>BuffetMoveRight :call buffet#moveRight()<cr>
+
 command! -bang -complete=buffer -nargs=? Bw call buffet#bwipe(<q-bang>, <q-args>)
 command! -bang -complete=buffer -nargs=? Bonly call buffet#bonly(<q-bang>, <q-args>)