Program can load XBIN files of uneven width, but not save them

[TheGreenHerring]

Like with BIN format, attempting to save an XBIN file of uneven width fails silently. However, in this case, the inability to save XBIN files of uneven width is itself a bug: the XBIN format directly stores the intended width in two bytes (rather than storing half the intended width in one byte like the SAUCE BinaryText width field) explicitly enabling images of uneven width (and the specification advises programmers of art viewers in the DOS era, where video memory always had an even length, to write special code to handle the case of an odd-width image).

The other element of the bug is that loading an odd-width image works just fine. The program will load and display the image at the correct width... but will then be unable to save any changes made to it.

This bug is especially noticeable when the program is compared to PabloDraw, which will allow you to load and save XBIN images of uneven width without a fuss.