When editing Markdown, especially in scenarios involving page rendering, mathematical formulas often require specific escaped delimiters. Below are common delimiters and their corresponding regular expressions for efficient batch matching:
- Inline Formulas
\(...\):
(?<!\\)\\\((.*?)(?<!\\)\\\)
\\(...\\):
(?<!\\)\\\\\((.*?)(?<!\\)\\\\\)
$...$:
(?<!\$)\$(?!\$)(.*?)(?<!\$)\$(?!\$)
- Block Formulas
\[...\]:
(?<!\\)\\\[\n(.*?)\n(?<!\\)\\\]
\\[...\\]:
(?<!\\)\\\\\[\n(.*?)\n(?<!\\)\\\\\]
$$...$$:
(?<!\$)\$\$(?!\$)\n(.*?)\n(?<!\$)\$\$(?!\$)
\begin{equation}...\end{equation}:
(?<!\\)\\begin{equation}\n(.*?)\n(?<!\\)\\end{equation}
These patterns use negative lookbehinds ((?<!\\), (?<!\$)) and negative lookaheads ((?!\\\$, (?!\$) to avoid conflicts between delimiters (e.g., $...$ vs. $$...$$). For block formulas, line breaks (\n) are included but can be removed if unnecessary.
Replacement Rules#
After matching, replacements can be performed using the following logic:
\(...\):
\\\($1\\\)
\\(...\\):
\\\\($1\\\\)
$...$:
$$$1$$
\[...\]:
\\[\n$1\n\\]
\\[...\\]:
\\\\[\n$1\n\\\\]
$$...$$:
$$$$\n$1\n$$$$
\begin{equation}...\end{equation}:
\begin{equation}\n$1\n\end{equation}