[racket] BIG BUG! On Windows, copying a bitmap doesn't work

Thanks for the help, Todd (and Matthew). This is now fixed in git and
will be in the next release.

Along the way, I improved the random test case generation that the
image test suite does (adding bitmaps and flipped images to it plus a
new predicate about saving images in files) and that uncovered several
more bugs. Go random testing!

Robby

On Mon, Jul 19, 2010 at 8:56 PM, Todd O'Bryan <toddobryan at gmail.com> wrote:
> Sent this to just Robby, so forwarding to the list for posterity.
>
> Also, I just tried re-opening the file on Linux and it doesn't work
> there, although copying from Interactions to Definitions does work,
> unlike on Windows. Here's a link to the file, in case the way it's
> formatted provides a clue to why this isn't working:
>
> https://www.dupontmanual.org/wikis/intro/ImageExercises?action=AttachFile&do=get&target=image-exercises.rkt.zip
>
> The idea was for students to reproduce the images given so that the
> test cases would pass. The black circles in the file should be the
> images on this page:
>
> https://www.dupontmanual.org/wikis/intro/ImageExercises
>
> Todd
>
> P.S. I'm glad we caught this before the fall. Saving files with images
> and then re-opening them with black circles is a little disconcerting.
> :-)
> ------------------------------------------------------------------------------------------
>
> Do
>
> (define BLAH --insert image here using menu--)
>
> In interactions, do
>
>> (image-beside BLAH BLAH)
> pretty picture appears
>
> Select pretty picture. Choose copy. Paste up into Definitions window.
> Instead of pretty picture, black circle appears. (And it's a weird
> circle that covers up parts of the text and doesn't seem right.)
>
> Todd
>
> On Mon, Jul 19, 2010 at 8:24 PM, Robby Findler
> <robby at eecs.northwestern.edu> wrote:
>> Can you provide a more precise description of what is failing?
>>
>> Thanks,
>> Robby
>>
>> On Mon, Jul 19, 2010 at 7:07 PM, Todd O'Bryan <toddobryan at gmail.com> wrote:
>>> I gave my students a bunch of images created with 2htdp/image to try
>>> to recreate.
>>>
>>> All of the images involving bitmaps appear as black circles on Windows.
>>>
>>> Even if you create the image in the interactions window and then copy
>>> it into the definitions, the same big, nasty black circle appears.
>>>
>>> This is true on both 5.0 and the latest nightly build.
>>>
>>> Todd
>>>
>>> P.S. Works fine on Linux, as far as I can tell. I can have my TA check
>>> Mac OS after tonight's class.
>>> _________________________________________________
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>>
>