bugfix: save modified files in save directory

Dependencies

• [2] PX7DDEMO autosave slightly less aggressively
• [3] AD34IX2Z couple more tests
• [4] JFFUF5AL override mouse state lookups in tests
• [5] JF5L2BBS test harness now supports copy/paste
• [6] 7CLGG7J2 test: autosave after any shape
• [7] AVTNUQYR basic test-enabled framework
• [8] ZLJGZYQG select text with shift + mouseclick
• [*] 3QNOKBFM beginnings of a test harness

Change contents

• replacement in app.lua at line 386
  [3.8162]→[3.1614:1692](∅→∅),[3.1692]→[3.2713:2791](∅→∅),[3.8162]→[3.2713:2791](∅→∅)
  − App.open_for_reading = function(filename) return io.open(filename, 'r') end

  − App.open_for_writing = function(filename) return io.open(filename, 'w') end
  [3.8162]

  [2.1742]
  + if Current_app == nil or Current_app == 'run' then

  + App.open_for_reading = function(filename) return io.open(filename, 'r') end

  + App.open_for_writing = function(filename) return io.open(filename, 'w') end

  + elseif Current_app == 'source' then

  + -- HACK: source editor requires a couple of different foundational definitions

  + App.open_for_reading =

  + function(filename)

  + local result = love.filesystem.newFile(filename)

  + local ok, err = result:open('r')

  + if ok then

  + return result

  + else

  + return ok, err

  + end

  + end

  + App.open_for_writing =

  + function(filename)

  + local result = love.filesystem.newFile(filename)

  + local ok, err = result:open('w')

  + if ok then

  + return result

  + else

  + return ok, err

  + end

  + end

  + end