feat: don't save the session when no files are open (save_empty = false)

README.md

@@ -37,6 +37,7 @@ Persistence comes with the following defaults:
   dir = vim.fn.expand(vim.fn.stdpath("state") .. "/sessions/"), -- directory where session files are saved
   options = { "buffers", "curdir", "tabpages", "winsize" }, -- sessionoptions used for saving
   pre_save = nil, -- a function to call before saving the session
+  save_empty = false, -- don't save if there are no open file buffers
 }
 ```
 

lua/persistence/config.lua

@@ -4,7 +4,8 @@ local M = {}
 ---@field pre_save? fun()
 local defaults = {
   dir = vim.fn.expand(vim.fn.stdpath("state") .. "/sessions/"), -- directory where session files are saved
-  options = { "buffers", "curdir", "tabpages", "winsize" }, -- sessionoptions used for saving
+  options = { "buffers", "curdir", "tabpages", "winsize", "skiprtp" }, -- sessionoptions used for saving
+  save_empty = false, -- don't save if there are no open file buffers
 }
 
 ---@type PersistenceOptions

lua/persistence/init.lua

@@ -34,6 +34,18 @@ function M.start()
         Config.options.pre_save()
       end
 
+      if not Config.options.save_empty then
+        local bufs = vim.tbl_filter(function(b)
+          if vim.bo[b].buftype ~= "" then
+            return false
+          end
+          return vim.api.nvim_buf_get_name(b) ~= ""
+        end, vim.api.nvim_list_bufs())
+        if #bufs == 0 then
+          return
+        end
+      end
+
       M.save()
     end,
   })