content: add katex_bug demo page to reproduce rendering issues

Author: n-WN

content/blog/katex_bug.md

@@ -0,0 +1,119 @@
++++
+title = "katex bug"
++++
+
+> Display exceptions, such as inconsistent trailing commas and local restrictions, being pushed to one line, or not being displayed
+
+```markdown
+$$\begin{cases} f(x) \equiv V_1(x)^2 \pmod{U_1(x)} \\ f(x) \equiv V_2(x)^2 \pmod{U_2(x)} \\ f(x) \equiv V_3(x)^2 \pmod{U_3(x)} \end{cases}$$
+```
+
+$$\begin{cases} f(x) \equiv V_1(x)^2 \pmod{U_1(x)} \\ f(x) \equiv V_2(x)^2 \pmod{U_2(x)} \\ f(x) \equiv V_3(x)^2 \pmod{U_3(x)} \end{cases}$$
+
+---
+
+```markdown
+$(\text{order\_candidate} / p_i) \cdot G$
+```
+
+$(\text{order\_candidate} / p_i) \cdot G$
+
+---
+
+```markdown
+$$\text{order\_candidate} \leftarrow \frac{\text{order\_candidate}}{p_i}$$
+```
+
+$$\text{order\_candidate} \leftarrow \frac{\text{order\_candidate}}{p_i}$$
+
+---
+
+```markdown
+$$
+\text{flag\_chocolate}= (a^m+b^m)\bmod p ,
+$$
+```
+
+$$
+\text{flag\_chocolate}= (a^m+b^m)\bmod p ,
+$$
+
+---
+
+```markdown
+$$
+q = p_{\text{crypto}}-1\; / \; 2 = 85\,414\,812\,699\,185\,126\,250\,990\,381\,881\,994\,204\,791 .
+$$
+```
+
+$$
+q = p_{\text{crypto}}-1\; / \; 2 = 85\,414\,812\,699\,185\,126\,250\,990\,381\,881\,994\,204\,791 .
+$$
+
+---
+
+```markdown
+$$
+B=
+\begin{pmatrix}
+2 &        &        &        &        & d_{1,6} \\
+  & 2      &        &        &        & d_{1,7} \\
+  &        & \ddots &        &        & \vdots\\
+  &        &        & 2      &        & d_{17,11}\\
+  &        &        &        & 1 & -M
+\end{pmatrix},
+$$
+```
+
+$$
+B=
+\begin{pmatrix}
+2 &        &        &        &        & d_{1,6} \\
+  & 2      &        &        &        & d_{1,7} \\
+  &        & \ddots &        &        & \vdots\\
+  &        &        & 2      &        & d_{17,11}\\
+  &        &        &        & 1 & -M
+\end{pmatrix},
+$$
+
+---
+
+```markdown
+$$
+S=S_{0}+\sum_{i,k}b_{i,k}\,d_{i,k} - K\,M,
+$$
+```
+
+$$
+S=S_{0}+\sum_{i,k}b_{i,k}\,d_{i,k} - K\,M,
+$$
+
+---
+
+```markdown
+   $$
+   \text{idek\{ \ldots \}} .
+   $$
+```
+
+   $$
+   \text{idek\{ \ldots \}} .
+   $$
+
+---
+
+```markdown
+$$
+m_{\text{min}} = \underbrace{0x20\cdots20}_{20\text{ 个空格}} 
+\qquad
+m_{\text{max}} = \underbrace{0x7E\cdots7E}_{20\text{ 个波浪号}} 
+$$
+```
+
+$$
+m_{\text{min}} = \underbrace{0x20\cdots20}_{20\text{ 个空格}} 
+\qquad
+m_{\text{max}} = \underbrace{0x7E\cdots7E}_{20\text{ 个波浪号}} 
+$$
+
+