Code Fence Unexpected Replacements

[Mighten]

Hi!
The code fences do a lot of unexpected replacements, which indeed look interesting. But they really cause great trouble for students who want to memorize the code, e.g., the != is replaced by $\neq$, -> is replaced by $\rightarrow$, etc.

Is there a switch to turn off and change back to the most common code fence style (such as the GitHub's) ?
Thanks.

---

ListNode* insertionSortList(ListNode* head) {
    if (head == nullptr) return head;
    ListNode tmpHead;
    ListNode *cur = head, *pre = &tmpHead;

    while (cur != nullptr) {
        while (pre->next != nullptr && pre->next->val < cur->val)
            pre = pre->next;

        ListNode* next = cur->next;
        cur->next = pre->next;
        pre->next = cur;
        pre = &tmpHead;
        cur = next;
    }
    return tmpHead.next;
}