Unable to show images under kitty

[mrzv]

With tab running in the kitty terminal, if I try to display images (using its graphics protocol), I get an error:

$ tab foo
$ kitty +kitten icat some.png
Terminal does not support reporting screen sizes via the TIOCGWINSZ ioctl

(FWIW, this works fine under dtach, although I realize that doesn't maintain scrollback, so is quite different.)

[mrzv]

I take this back. The graphics protocol works perfectly and is preserved across disconnect/reconnect, which is great. It's only the window size query that fails in the icat kitten (at which point it aborts), but some other codes using this protocol work. So the larger issue of supporting ioctl remains, but my original wording is misleading.