ugh, handle absolute as well as relative paths

Manual_tests.md

@@ -23,3 +23,11 @@ Lua is dynamically typed. Tests can't patch over lack of type-checking.
 
 * Like any high-level language, it's easy to accidentally alias two non-scalar
   variables. I wish there was a way to require copy when assigning.
+
+### Todo list
+
+* Initializing settings:
+    - from previous session
+        - Filename as absolute path
+        - Filename as relative path
+    - from defaults

main.lua

@@ -318,11 +318,15 @@ function love.quit()
   end
   -- save some important settings
   local x,y,displayindex = love.window.getPosition()
+  local filename = Filename
+  if filename:sub(1,1) ~= '/' then
+    filename = love.filesystem.getWorkingDirectory()..'/'..filename  -- '/' should work even on Windows
+  end
   local settings = {
     x=x, y=y, displayindex=displayindex,
     width=App.screen.width, height=App.screen.height,
     font_height=Font_height,
-    filename=love.filesystem.getWorkingDirectory()..'/'..Filename,  -- '/' should work even on Windows
+    filename=filename,
     screen_top=Screen_top1, cursor=Cursor1}
   love.filesystem.write('config', json.encode(settings))
 end