find-new-buffer-file-coding-system

find-new-buffer-file-coding-system is a compiled Lisp function in `mule.el'.

(find-new-buffer-file-coding-system CODING)

Return a coding system for a buffer when a file of CODING is inserted.
The local variable `buffer-file-coding-system' of the current buffer
is set to the returned value.
Return nil if there's no need to set `buffer-file-coding-system'.