如何阻止DocFX在C# XML注释中将\转义为\？

Problem Description #

I'm writing C# XML comments that include LaTeX-style matrix notation, where \\ is used to denote new lines in the matrix. However, when generating documentation with DocFX, the backslashes are being escaped/modified, breaking the matrix format.

Here's my code example:

///<summary>
/// Blah
///</summary>
/// \f[ \left(\begin{matrix} 0 &amp; 1 &amp; 2 \\ 3 &amp; 4 &amp; 5 \end{matrix}\right) \f]
public void Method() { }

The generated output ends up with broken line breaks in the matrix:

<p>\f[ \left(\begin{matrix} 0 &amp; 1 &amp; 2 \ 3 &amp; 4 &amp; 5 \end{matrix}\right) \f]</p>

The original \\ has been converted to \ (a single backslash followed by a space), which LaTeX can't interpret as a matrix line break.

Solutions #

Here are three reliable ways to fix this issue:

1. Wrap LaTeX in XML CDATA Blocks #

XML CDATA sections tell parsers to treat the enclosed content as raw text, skipping any escape processing. This is the cleanest approach for preserving LaTeX syntax:

///<summary>
/// Blah
///</summary>
/// <![CDATA[ \f[ \left(\begin{matrix} 0 & 1 & 2 \\ 3 & 4 & 5 \end{matrix}\right) \f] ]]>
public void Method() { }

Note: Inside CDATA, you don't need to escape & as & anymore, which makes the LaTeX much easier to read. DocFX will pass the raw \\ through to the final output, so LaTeX renders the matrix correctly.

2. Use Quadruple Backslashes (\\\\) #

If you prefer not to use CDATA, you can chain escape sequences to get the correct output. DocFX's Markdown processor treats \\ as a line break escape, so you need to write \\\\ in your XML comment to end up with \\ in the final LaTeX:

///<summary>
/// Blah
///</summary>
/// \f[ \left(\begin{matrix} 0 &amp; 1 &amp; 2 \\\\ 3 &amp; 4 &amp; 5 \end{matrix}\right) \f]
public void Method() { }

This works because each pair of backslashes gets resolved once by DocFX, leaving the two backslashes LaTeX needs for a matrix line break.

3. Disable Backslash Escaping in DocFX Configuration #

If you have lots of LaTeX in your comments, you can configure DocFX's Markdown engine to skip backslash escaping entirely. Add or modify the markdownEngineProperties section in your docfx.json:

{
  "build": {
    "markdownEngineProperties": {
      "markdigExtensions": ["NoEscape"]
    },
    // ... other build settings
  }
}

Caution: This is a global setting, so it may affect other Markdown syntax in your documentation (like escaped characters in regular text). Test thoroughly before using this approach.

Verification #

After applying any of these methods, the generated output should retain the correct \\ for LaTeX matrix line breaks, resulting in a properly formatted matrix in your documentation.

内容的提问来源于stack exchange，提问作者tmren