I believe this function is w32 specific?
1) In the beginning of this function there is a statement
(set-buffer (current-buffer))
What does this do?
2) This function is only used in the (obsolete) hook
`find-file-not-found-hooks'. The functions added to this non-normal
hook is run until one of the functions return non-nil. I believe this
function does not reflect this. Should it not do that?
3) This function sets buffer-file-coding-system eol type based on
untranslated-file-p only (avoiding this if coding-system-for-read or
inhibit-eol-conversion is set). Is there a way to set this based on
the file name? Otherwise, could this be added?
4) In addition to setting buffer-file-coding-system it sets
buffer-file-type. That actually breaks the return value in 2 above
since it is done last. It is also a bit surprising.
5) buffer-file-type is in my opinion a not very good name. Maybe
buffer-file-binary would be easier to understand? The variable is used
in very few places in Emacs.