-- We try to save new definitions in the source directory, but this is not
-- possible if the app lives in a .love file. In that case new definitions
-- go in the save dir.

  print('new edits will go to ' .. love.filesystem.getSaveDirectory())
  -- if necessary, copy files from repo to save dir
  if io.open(love.filesystem.getSaveDirectory()..'/0000-freewheeling-start') == nil then
    print('copying all definitions from repo to save dir')
    for _,filename in ipairs(love.filesystem.getDirectoryItems('')) do
      local numeric_prefix, root = filename:match('^(%d+)-(.+)')
      if numeric_prefix then
        local buf = love.filesystem.read(filename)
        print('copying', filename)
        love.filesystem.write(filename, buf)
      end
    end
  end
  -- list files to load in save dir
  -- (ignore the repo because we might have deleted definitions)

    if io.open(love.filesystem.getSaveDirectory()..'/'..filename) then
      local numeric_prefix, root = filename:match('^(%d+)-(.+)')
      if numeric_prefix and not numeric_prefix:match('^0+$') then
        Live.filename[root] = filename
        table.insert(Live.filenames_to_load, filename)
        Live.final_prefix = math.max(Live.final_prefix, tonumber(numeric_prefix))
      end

    local numeric_prefix, root = filename:match('^(%d+)-(.+)')
    if numeric_prefix and tonumber(numeric_prefix) > 0 then  -- skip 0000
      Live.filename[root] = filename
      table.insert(Live.filenames_to_load, filename)
      Live.final_prefix = math.max(Live.final_prefix, tonumber(numeric_prefix))

      -- try to remove the file from both source_dir and save_dir
      -- this won't work for files inside .love files
      App.remove(App.source_dir..Live.filename[definition_name])

    love.filesystem.write(filename, buf)

    -- try to write to source dir
    local status, err = App.write_file(App.source_dir..filename, buf)
    if err then
      -- not possible; perhaps it's a .love file
      -- try to write to save dir
      local status, err2 = App.write_file(App.save_dir..filename, buf)
      if err2 then
        -- throw an error
        live.send_to_driver('ERROR '..tostring(err..'\n\n'..err2))
        return
      end
    end

To publish your changes:
  * delete all files with a numeric prefix from the repo, and then
  * move all files with a numeric prefix from the [save directory](https://love2d.org/wiki/love.filesystem.getSaveDirectory)
    to the repo.

If you run a .love file, your changes will go into the [save directory](https://love2d.org/wiki/love.filesystem.getSaveDirectory).
If you unzip the .love file into a new directory and run the directory
instead, your changes will go straight into the same directory.