Sessions

README.md

@@ -93,6 +93,18 @@ selected file in a tab, instead of the current window. <kbd>ctrl-x</kbd> will
 open in a split an so on. Meanwhile for multi selected files will be loaded in
 the buffer list.
 
+#### Persistent session
+
+You can configure n³ to use a session to remember your place when you reopen it.
+
+```vim
+" use the same nnn session within a vim session
+let g:nnn#session = 'local'
+
+" use the same nnn session everywhere (including outside vim)
+let g:nnn#session = 'global'
+```
+
 #### Command override
 
 When you want to override the default n³ command and add some extra flags.

autoload/nnn.vim

@@ -1,6 +1,8 @@
 let s:temp_file = ""
 let s:action = ""
 let s:tbuf = 0
+" HACK: cannot use / in a session name
+let s:local_ses = substitute(tempname(), '/', '-', 'g')
 
 function! s:statusline()
     setlocal statusline=%#StatusLineTerm#\ nnn\ %#StatusLineTermNC#
@@ -273,6 +275,8 @@ function! s:create_term_buf(opts)
     endif
 endfunction
 
+let s:nnn_conf_dir = (!empty($XDG_CONFIG_HOME) ? $XDG_CONFIG_HOME : $HOME.'/.config') . '/nnn'
+
 function! s:create_on_exit_callback(opts)
     let l:opts = a:opts
     function! s:callback(id, code, ...) closure
@@ -283,8 +287,7 @@ function! s:create_on_exit_callback(opts)
 
         call s:eval_temp_file(l:opts)
 
-        let fdir = !empty($XDG_CONFIG_HOME) ? $XDG_CONFIG_HOME : $HOME.'/.config'
-        let fname = fdir . '/nnn/.lastd'
+        let fname = s:nnn_conf_dir.'/.lastd'
         if !empty(glob(fname))
             let firstline = readfile(fname)[0]
             let lastd = split(firstline, '"')[1]
@@ -342,7 +345,19 @@ function! nnn#pick(...) abort
     let l:default_opts = { 'edit': 'edit' }
     let l:opts = extend(l:default_opts, get(a:, 2, {}))
     let s:temp_file = tempname()
-    let l:cmd = g:nnn#command.' -p '.shellescape(s:temp_file).' '.(l:directory != '' ? shellescape(l:directory): '')
+    if g:nnn#session ==# 'none'
+        let l:sess_cfg = ' '
+    elseif g:nnn#session ==# 'global'
+        let l:sess_cfg = ' -S '
+    elseif g:nnn#session ==# 'local'
+        let l:sess_cfg = ' -S -s '.s:local_ses.' '
+        let session_file = s:nnn_conf_dir.'/sessions/'.s:local_ses
+        if !(exists('g:nnn_ses_autocmd'))
+            execute 'autocmd VimLeavePre * call delete(fnameescape("'.session_file.'"))'
+            let g:nnn_ses_autocmd = 1
+        endif
+    endif
+    let l:cmd = g:nnn#command.l:sess_cfg.' -p '.shellescape(s:temp_file).' '.(l:directory != '' ? shellescape(l:directory): '')
     let l:layout = exists('l:opts.layout') ? l:opts.layout : g:nnn#layout
 
     let l:opts.layout = l:layout

plugin/nnn.vim

@@ -31,6 +31,10 @@ if !(exists("g:nnn#shell"))
     let g:nnn#shell = &shell
 endif
 
+if !(exists("g:nnn#session"))
+   let g:nnn#session = "none"
+endif
+
 command! -bar -nargs=? -complete=dir NnnPicker call nnn#pick(<f-args>)
 command! -bar -nargs=? -complete=dir Np call nnn#pick(<f-args>)