[icat] reading PNGs from STDIN silently fails

[rien333]

Not sure what component is at fault here, but icat seems to silently fail in outputing an image when reading any PNG image from STDIN:

cat foo.png | kitty icat

No difference with --stdin=yes. Appending --transfer-mode=stream outputs the image, but also outputs the following error:

cat foo.png |  kitty icat  --transfer-mode=stream
**[Image]**
...
File "/usr/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/usr/bin/../lib/kitty/kittens/icat/main.py", line 387, in <module>
    main()
  File "/usr/bin/../lib/kitty/kittens/icat/main.py", line 370, in main
    process_single_item(item, args, url_pat)
  File "/usr/bin/../lib/kitty/kittens/icat/main.py", line 309, in process_single_item
    os.remove(item)
FileNotFoundError: [Errno 2] No such file or directory: '/tmp/stdin-image-data-t71wm64i'

Appending the transfer-mode flag does work as expected with JPG files (so no error, and a correctly displayed image), and so does regular jpg reading from stdin.

Possibly related to/duplicate of #1320 and #1340. Note that your curl example from #1340 does not work, at least not when using PNGs. It works fine when reading in jpg files.

Version Info

Arch Linux, with the following kitty version (compiled from HEAD):

kitty --version
kitty 0.14.3 created by Kovid Goyal