[Q] how to check if passed icon is the same as app already has?

[Vasyl Zuziak]

Is it possible to come up with any check if the passed icon is the same as the app already has?

I tried to md5 but the checksum is different for .icns file and the result of get command for same icon

[Michael Klement]

Yes, it seems like transformations can happen behind the scenes that result in a different binary file when you extract the image.

I'm afraid I don't know how to compensate for that - short of round-tripping an assigned image, which may not be practical (by that I mean: assign, extract, and keep the extracted form as a reference copy; if a given file or folder has this reference copy assigned, extracting it will apparently retrieve an exact copy of it).

[Vasyl Zuziak]

ok, I got the idea. will try to "cook" smth in that direction.

thanks for the answer