From 2a9e67310b333eabf0a15acc0c78da42e9e8202e Mon Sep 17 00:00:00 2001
From: Mathias Fussenegger <f.mathias@zignar.net>
Date: Fri, 6 Aug 2021 12:42:43 +0200
Subject: [PATCH] Fix error in implicit save on empty buffer

If you open up neovim and run `:set ft=java` there is no file name

Fixes https://github.com/mfussenegger/nvim-jdtls/issues/109
---
 lua/jdtls/setup.lua | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lua/jdtls/setup.lua b/lua/jdtls/setup.lua
index 3c8def8..2c9e2ad 100644
--- a/lua/jdtls/setup.lua
+++ b/lua/jdtls/setup.lua
@@ -164,7 +164,11 @@ local function maybe_implicit_save()
     if scheme ~= 'file' then
       return
     end
-    local stat = vim.loop.fs_stat(api.nvim_buf_get_name(bufnr))
+    local fname = api.nvim_buf_get_name(bufnr)
+    if fname == '' then
+      return
+    end
+    local stat = vim.loop.fs_stat(fname)
     if not stat then
       vim.fn.mkdir(vim.fn.expand('%:p:h'), 'p')
       vim.cmd('w')