Andreas Schwab <schwab@suse.de> writes:

> Probably a better way to solve that is to create a way to tell
> insert-file-contents the original file name to be used for deciding the
> coding system.

I've compiled a patch, which checks during insert-file-contents and
write-region, whether a remote file name matches an expression in
file-name-coding-system-alist. If yes, a new entry is prepended for the
same coding system, but matching the temporary file name.

William, could you, please, test whether it works for you?

> Andreas.

Best regards, Michael.