Function is_backup_file

delete.c:37–41

int skipped_deletes = 0;

static inline int is_backup_file(char *fn)
{
	int k = strlen(fn) - backup_suffix_len;
	return k > 0 && strcmp(fn+k, backup_suffix) == 0;
}

/* The directory is about to be deleted: if DEL_RECURSE is given, delete all
 * its contents, otherwise just checks for content.  Returns DR_SUCCESS or