feat(plugin):delete buffers before loading a session

README.md

@@ -99,6 +99,7 @@ require('possession').setup {
         },
         nvim_tree = true,
         tabby = true,
+        delete_buffers = true,
     },
 }
 ```

lua/possession/config.lua

@@ -48,6 +48,7 @@ local function defaults()
             },
             nvim_tree = true,
             tabby = true,
+            delete_buffers = true,
         },
     }
 end

lua/possession/plugins/delete_buffers.lua

@@ -0,0 +1,18 @@
+local M = {}
+
+function M.before_load(_, _, plugin_data)
+    -- Deleting the current buffer before deleting other buffers will cause autocmd "BufEnter" to be triggered.
+    -- Lspconfig will use the invalid buffer handler in vim.schedule.
+    -- So make sure the current buffer is the last one to delete.
+    local current_buffer = vim.api.nvim_get_current_buf()
+    for _, buffer in ipairs(vim.api.nvim_list_bufs()) do
+        if vim.api.nvim_buf_is_valid(buffer) and current_buffer ~= buffer then
+            vim.api.nvim_buf_delete(buffer, { force = true })
+        end
+    end
+    vim.api.nvim_buf_delete(current_buffer, { force = true })
+    vim.lsp.stop_client(vim.lsp.get_active_clients())
+    return plugin_data
+end
+
+return M

lua/possession/plugins/init.lua

@@ -8,6 +8,7 @@ local plugins = {
     'delete_hidden_buffers',
     'nvim_tree',
     'tabby',
+    'delete_buffers',
 }
 
 local function req(plugin)

lua/possession/session.lua

@@ -120,23 +120,22 @@ function M.save(name, opts)
 end
 
 function M.autosave()
-  if config.autosave == false then
-      return
-  end
-  if M.session_name then
-      M.save(M.session_name, { no_confirm = true })
-  elseif config.tmp_session then -- Save as tmp when session is not loaded
-
-      -- Skip scratch buffer e.g. startscreen
-      local unscratch_buffers = vim.tbl_filter(function (buf)
-          return "nofile" ~= vim.api.nvim_buf_get_option(buf, "buftype")
-      end, vim.api.nvim_list_bufs())
-      if not unscratch_buffers or not next(unscratch_buffers) then
-          return
-      end
-
-      M.save("tmp", { no_confirm = true })
-  end
+    if config.autosave == false then
+        return
+    end
+    if M.session_name then
+        M.save(M.session_name, { no_confirm = true })
+    elseif config.tmp_session then -- Save as tmp when session is not loaded
+        -- Skip scratch buffer e.g. startscreen
+        local unscratch_buffers = vim.tbl_filter(function(buf)
+            return 'nofile' ~= vim.api.nvim_buf_get_option(buf, 'buftype')
+        end, vim.api.nvim_list_bufs())
+        if not unscratch_buffers or not next(unscratch_buffers) then
+            return
+        end
+
+        M.save('tmp', { no_confirm = true })
+    end
 end
 
 -- Load session by name (or from raw data)

plugin/possession.lua

@@ -2,6 +2,6 @@ local session = require('possession.session')
 local possession_group = vim.api.nvim_create_augroup('Possession', {})
 
 vim.api.nvim_create_autocmd({ 'VimLeavePre' }, {
-  group = possession_group,
-  callback = session.autosave,
+    group = possession_group,
+    callback = session.autosave,
 })