Function htmlSaveFile 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn htmlSaveFile(
    filename: *const c_char,
    cur: *mut _xmlDoc,
) -> c_int

Same as htmlSaveFileFormat with encoding set to NULL and format set to 1.

UPSTREAM-PARITY

int htmlSaveFile(const char *filename, xmlDoc *cur);