goldmark-mathjax is an extension for the goldmark that adds both block math and inline math support
It translate inline math equation quoted by $ and display math block quoted by $$ into MathJax compatible format.
hyphen _ won't break LaTeX render within a math element any more.
$$
\left[ \begin{array}{a} a^l_1 \\ ⋮ \\ a^l_{d_l} \end{array}\right]
= \sigma(
\left[ \begin{matrix}
w^l_{1,1} & ⋯ & w^l_{1,d_{l-1}} \\
⋮ & ⋱ & ⋮ \\
w^l_{d_l,1} & ⋯ & w^l_{d_l,d_{l-1}} \\
\end{matrix}\right] ·
\left[ \begin{array}{x} a^{l-1}_1 \\ ⋮ \\ ⋮ \\ a^{l-1}_{d_{l-1}} \end{array}\right] +
\left[ \begin{array}{b} b^l_1 \\ ⋮ \\ b^l_{d_l} \end{array}\right])
$$
Borrow the idea from pandoc and this blackfriday PR
The implementation is heavily inspired by the Fenced Code Block and CodeSpan of goldmark
go get github.com/litao91/goldmark-mathjax
package main
import (
"bytes"
"fmt"
mathjax "github.com/litao91/goldmark-mathjax"
"github.com/yuin/goldmark"
"github.com/yuin/goldmark/parser"
"github.com/yuin/goldmark/renderer/html"
)
func main() {
md := goldmark.New(
goldmark.WithExtensions(mathjax.MathJax),
goldmark.WithParserOptions(
parser.WithAutoHeadingID(),
),
goldmark.WithRendererOptions(
html.WithHardWraps(),
html.WithXHTML(),
),
)
// todo more control on the parsing process
var html bytes.Buffer
mdContent := []byte(`
$$
\mathbb{E}(X) = \int x d F(x) = \left\{ \begin{aligned} \sum_x x f(x) \; & \text{ if } X \text{ is discrete}
\\ \int x f(x) dx \; & \text{ if } X \text{ is continuous }
\end{aligned} \right.
$$
Inline math $\frac{1}{2}$
`)
if err := md.Convert(mdContent, &html); err != nil {
fmt.Println(err)
}
fmt.Println(html.String())
}MIT