feat(nvim): implement restart with temporary session

Author: frippz

nvim/init.lua

@@ -6,3 +6,4 @@ require("plugin")
 require("themes")
 require("python")
 require("misc")
+require("restart")

nvim/lua/mappings.lua

@@ -4,9 +4,6 @@ g.mapleader = " "
 -- Remap save
 map("n", "<Leader>w", ":w<CR>", { desc = "Save file" })
 
--- Restart nvim
-map("n", "<leader>R", ":restart<cr>", { desc = "Restart Neovim" })
-
 -- Close current buffer
 map("n", "<leader>q", ":close<cr>", { desc = "Close current window" })
 

nvim/lua/restart.lua

@@ -0,0 +1,18 @@
+-- Restart the current session without saving it by using a temporary session
+local tmp_session = vim.fn.stdpath("state") .. "/Restart.vim"
+local esc_tmp_session = vim.fn.fnameescape(tmp_session)
+
+function _G.after_restart(orig_session)
+  vim.cmd("source " .. esc_tmp_session)
+  vim.v.this_session = orig_session
+end
+
+local session_restart = function()
+  local restart_cmd = [[
+    mksession! %s | confirm restart lua _G.after_restart(%s)
+  ]]
+  vim.cmd("silent! write")
+  vim.cmd(restart_cmd:format(esc_tmp_session, ("%q"):format(vim.v.this_session)))
+end
+
+vim.keymap.set("n", "<Leader>R", session_restart, { desc = "Restart" })