ConEmu bug

[fanmanpro]

I'm getting this error when I try open an .png file using ConEmu on windows.

Error detected while processing function AfterimageReadPost:
line   34:
E484: Can't open file C:\Users\<username>\AppData\Local\BIV1342.tmp

The buffer ends up being empty :(

Is there perhaps a setting I am not aware of that could make this work?

[tpope]

Does this mean 'shell' isn't cmd.exe? You're going to have to suggest a solution here.

[fanmanpro]

That is correct. I am rather new to vim so the best I can do is drop a few observations from my testing.

• Using gvim.exe I get the perfectly looking beautiful image.
• Using cmd.exe I get a ASCII looking image with the hex at the top of the buffer.
• Using ConEmu the buffer stays empty and I get the error from my first comment.
• My tests were all when trying to open the same .png file

As a solution I can only think that there is something missing in the encoding of the characters in cmd.exe and ConEmu. Or perhaps the colors that are supported...
Are there any requirements in terms of the encoding and the colors when it comes to rendering the images in vim?
I'm not even sure if cmd.exe is supported as images can obviously require a lot of colors and I know cmd.exeis quite limited in this regard. The main reason I use ConEmu is to get the correct rendering (amongst other things) for Solarized Dark. So I would assume it can handle this plugin's rendering.

[tpope]

All afterimage does is shell out to convert. My guess is shelling out is completely broken in your Vim, or at least any shelling out that uses shellescape(). Try call system('echo '.shellescape(123)) and see if you get a similar error.