markup/highlight: Replace the temp for with a dependency

4 files changed, 2 insertions, 822 deletions

diff --git a/markup/goldmark/convert.go b/markup/goldmark/convert.go
index 6c9a3771a..9ce0b0b56 100644
--- a/markup/goldmark/convert.go
+++ b/markup/goldmark/convert.go
@@ -28,10 +28,10 @@ import (
 	"github.com/alecthomas/chroma/styles"
 	"github.com/gohugoio/hugo/markup/converter"
 	"github.com/gohugoio/hugo/markup/highlight"
-	hl "github.com/gohugoio/hugo/markup/highlight/temphighlighting"
 	"github.com/gohugoio/hugo/markup/markup_config"
 	"github.com/gohugoio/hugo/markup/tableofcontents"
 	"github.com/yuin/goldmark"
+	hl "github.com/yuin/goldmark-highlighting"
 	"github.com/yuin/goldmark/extension"
 	"github.com/yuin/goldmark/parser"
 	"github.com/yuin/goldmark/renderer"
diff --git a/markup/highlight/highlight.go b/markup/highlight/highlight.go
index cec637c72..322bde1ef 100644
--- a/markup/highlight/highlight.go
+++ b/markup/highlight/highlight.go
@@ -22,7 +22,7 @@ import (
 	"github.com/alecthomas/chroma/formatters/html"
 	"github.com/alecthomas/chroma/lexers"
 	"github.com/alecthomas/chroma/styles"
-	hl "github.com/gohugoio/hugo/markup/highlight/temphighlighting"
+	hl "github.com/yuin/goldmark-highlighting"
 )
 
 func New(cfg Config) Highlighter {
diff --git a/markup/highlight/temphighlighting/highlighting.go b/markup/highlight/temphighlighting/highlighting.go
deleted file mode 100644
index d2f16c506..000000000
--- a/markup/highlight/temphighlighting/highlighting.go
+++ /dev/null
@@ -1,512 +0,0 @@
-// package highlighting is a extension for the goldmark(http://github.com/yuin/goldmark).
-//
-// This extension adds syntax-highlighting to the fenced code blocks using
-// chroma(https://github.com/alecthomas/chroma).
-//
-// TODO(bep) this is a very temporary fork based on https://github.com/yuin/goldmark-highlighting/pull/10
-// MIT Licensed, Copyright Yusuke Inuzuka
-package temphighlighting
-
-import (
-	"bytes"
-	"io"
-	"strconv"
-	"strings"
-
-	"github.com/yuin/goldmark"
-	"github.com/yuin/goldmark/ast"
-	"github.com/yuin/goldmark/parser"
-	"github.com/yuin/goldmark/renderer"
-	"github.com/yuin/goldmark/renderer/html"
-	"github.com/yuin/goldmark/text"
-	"github.com/yuin/goldmark/util"
-
-	"github.com/alecthomas/chroma"
-	chromahtml "github.com/alecthomas/chroma/formatters/html"
-	"github.com/alecthomas/chroma/lexers"
-	"github.com/alecthomas/chroma/styles"
-)
-
-// ImmutableAttributes is a read-only interface for ast.Attributes.
-type ImmutableAttributes interface {
-	// Get returns (value, true) if an attribute associated with given
-	// name exists, otherwise (nil, false)
-	Get(name []byte) (interface{}, bool)
-
-	// GetString returns (value, true) if an attribute associated with given
-	// name exists, otherwise (nil, false)
-	GetString(name string) (interface{}, bool)
-
-	// All returns all attributes.
-	All() []ast.Attribute
-}
-
-type immutableAttributes struct {
-	n ast.Node
-}
-
-func (a *immutableAttributes) Get(name []byte) (interface{}, bool) {
-	return a.n.Attribute(name)
-}
-
-func (a *immutableAttributes) GetString(name string) (interface{}, bool) {
-	return a.n.AttributeString(name)
-}
-
-func (a *immutableAttributes) All() []ast.Attribute {
-	if a.n.Attributes() == nil {
-		return []ast.Attribute{}
-	}
-	return a.n.Attributes()
-}
-
-// CodeBlockContext holds contextual information of code highlighting.
-type CodeBlockContext interface {
-	// Language returns (language, true) if specified, otherwise (nil, false).
-	Language() ([]byte, bool)
-
-	// Highlighted returns true if this code block can be highlighted, otherwise false.
-	Highlighted() bool
-
-	// Attributes return attributes of the code block.
-	Attributes() ImmutableAttributes
-}
-
-type codeBlockContext struct {
-	language    []byte
-	highlighted bool
-	attributes  ImmutableAttributes
-}
-
-func newCodeBlockContext(language []byte, highlighted bool, attrs ImmutableAttributes) CodeBlockContext {
-	return &codeBlockContext{
-		language:    language,
-		highlighted: highlighted,
-		attributes:  attrs,
-	}
-}
-
-func (c *codeBlockContext) Language() ([]byte, bool) {
-	if c.language != nil {
-		return c.language, true
-	}
-	return nil, false
-}
-
-func (c *codeBlockContext) Highlighted() bool {
-	return c.highlighted
-}
-
-func (c *codeBlockContext) Attributes() ImmutableAttributes {
-	return c.attributes
-}
-
-// WrapperRenderer renders wrapper elements like div, pre, etc.
-type WrapperRenderer func(w util.BufWriter, context CodeBlockContext, entering bool)
-
-// CodeBlockOptions creates Chroma options per code block.
-type CodeBlockOptions func(ctx CodeBlockContext) []chromahtml.Option
-
-// Config struct holds options for the extension.
-type Config struct {
-	html.Config
-
-	// Style is a highlighting style.
-	// Supported styles are defined under https://github.com/alecthomas/chroma/tree/master/formatters.
-	Style string
-
-	// FormatOptions is a option related to output formats.
-	// See https://github.com/alecthomas/chroma#the-html-formatter for details.
-	FormatOptions []chromahtml.Option
-
-	// CSSWriter is an io.Writer that will be used as CSS data output buffer.
-	// If WithClasses() is enabled, you can get CSS data corresponds to the style.
-	CSSWriter io.Writer
-
-	// CodeBlockOptions allows set Chroma options per code block.
-	CodeBlockOptions CodeBlockOptions
-
-	// WrapperRendererCodeBlockOptions allows you to change wrapper elements.
-	WrapperRenderer WrapperRenderer
-}
-
-// NewConfig returns a new Config with defaults.
-func NewConfig() Config {
-	return Config{
-		Config:           html.NewConfig(),
-		Style:            "github",
-		FormatOptions:    []chromahtml.Option{},
-		CSSWriter:        nil,
-		WrapperRenderer:  nil,
-		CodeBlockOptions: nil,
-	}
-}
-
-// SetOption implements renderer.SetOptioner.
-func (c *Config) SetOption(name renderer.OptionName, value interface{}) {
-	switch name {
-	case optStyle:
-		c.Style = value.(string)
-	case optFormatOptions:
-		if value != nil {
-			c.FormatOptions = value.([]chromahtml.Option)
-		}
-	case optCSSWriter:
-		c.CSSWriter = value.(io.Writer)
-	case optWrapperRenderer:
-		c.WrapperRenderer = value.(WrapperRenderer)
-	case optCodeBlockOptions:
-		c.CodeBlockOptions = value.(CodeBlockOptions)
-	default:
-		c.Config.SetOption(name, value)
-	}
-}
-
-// Option interface is a functional option interface for the extension.
-type Option interface {
-	renderer.Option
-	// SetHighlightingOption sets given option to the extension.
-	SetHighlightingOption(*Config)
-}
-
-type withHTMLOptions struct {
-	value []html.Option
-}
-
-func (o *withHTMLOptions) SetConfig(c *renderer.Config) {
-	if o.value != nil {
-		for _, v := range o.value {
-			v.(renderer.Option).SetConfig(c)
-		}
-	}
-}
-
-func (o *withHTMLOptions) SetHighlightingOption(c *Config) {
-	if o.value != nil {
-		for _, v := range o.value {
-			v.SetHTMLOption(&c.Config)
-		}
-	}
-}
-
-// WithHTMLOptions is functional option that wraps goldmark HTMLRenderer options.
-func WithHTMLOptions(opts ...html.Option) Option {
-	return &withHTMLOptions{opts}
-}
-
-const optStyle renderer.OptionName = "HighlightingStyle"
-
-var highlightLinesAttrName = []byte("hl_lines")
-
-var styleAttrName = []byte("hl_style")
-var nohlAttrName = []byte("nohl")
-var linenosAttrName = []byte("linenos")
-var linenosTableAttrValue = []byte("table")
-var linenosInlineAttrValue = []byte("inline")
-var linenostartAttrName = []byte("linenostart")
-
-type withStyle struct {
-	value string
-}
-
-func (o *withStyle) SetConfig(c *renderer.Config) {
-	c.Options[optStyle] = o.value
-}
-
-func (o *withStyle) SetHighlightingOption(c *Config) {
-	c.Style = o.value
-}
-
-// WithStyle is a functional option that changes highlighting style.
-func WithStyle(style string) Option {
-	return &withStyle{style}
-}
-
-const optCSSWriter renderer.OptionName = "HighlightingCSSWriter"
-
-type withCSSWriter struct {
-	value io.Writer
-}
-
-func (o *withCSSWriter) SetConfig(c *renderer.Config) {
-	c.Options[optCSSWriter] = o.value
-}
-
-func (o *withCSSWriter) SetHighlightingOption(c *Config) {
-	c.CSSWriter = o.value
-}
-
-// WithCSSWriter is a functional option that sets io.Writer for CSS data.
-func WithCSSWriter(w io.Writer) Option {
-	return &withCSSWriter{w}
-}
-
-const optWrapperRenderer renderer.OptionName = "HighlightingWrapperRenderer"
-
-type withWrapperRenderer struct {
-	value WrapperRenderer
-}
-
-func (o *withWrapperRenderer) SetConfig(c *renderer.Config) {
-	c.Options[optWrapperRenderer] = o.value
-}
-
-func (o *withWrapperRenderer) SetHighlightingOption(c *Config) {
-	c.WrapperRenderer = o.value
-}
-
-// WithWrapperRenderer is a functional option that sets WrapperRenderer that
-// renders wrapper elements like div, pre, etc.
-func WithWrapperRenderer(w WrapperRenderer) Option {
-	return &withWrapperRenderer{w}
-}
-
-const optCodeBlockOptions renderer.OptionName = "HighlightingCodeBlockOptions"
-
-type withCodeBlockOptions struct {
-	value CodeBlockOptions
-}
-
-func (o *withCodeBlockOptions) SetConfig(c *renderer.Config) {
-	c.Options[optWrapperRenderer] = o.value
-}
-
-func (o *withCodeBlockOptions) SetHighlightingOption(c *Config) {
-	c.CodeBlockOptions = o.value
-}
-
-// WithCodeBlockOptions is a functional option that sets CodeBlockOptions that
-// allows setting Chroma options per code block.
-func WithCodeBlockOptions(c CodeBlockOptions) Option {
-	return &withCodeBlockOptions{value: c}
-}
-
-const optFormatOptions renderer.OptionName = "HighlightingFormatOptions"
-
-type withFormatOptions struct {
-	value []chromahtml.Option
-}
-
-func (o *withFormatOptions) SetConfig(c *renderer.Config) {
-	if _, ok := c.Options[optFormatOptions]; !ok {
-		c.Options[optFormatOptions] = []chromahtml.Option{}
-	}
-	c.Options[optStyle] = append(c.Options[optFormatOptions].([]chromahtml.Option), o.value...)
-}
-
-func (o *withFormatOptions) SetHighlightingOption(c *Config) {
-	c.FormatOptions = append(c.FormatOptions, o.value...)
-}
-
-// WithFormatOptions is a functional option that wraps chroma HTML formatter options.
-func WithFormatOptions(opts ...chromahtml.Option) Option {
-	return &withFormatOptions{opts}
-}
-
-// HTMLRenderer struct is a renderer.NodeRenderer implementation for the extension.
-type HTMLRenderer struct {
-	Config
-}
-
-// NewHTMLRenderer builds a new HTMLRenderer with given options and returns it.
-func NewHTMLRenderer(opts ...Option) renderer.NodeRenderer {
-	r := &HTMLRenderer{
-		Config: NewConfig(),
-	}
-	for _, opt := range opts {
-		opt.SetHighlightingOption(&r.Config)
-	}
-	return r
-}
-
-// RegisterFuncs implements NodeRenderer.RegisterFuncs.
-func (r *HTMLRenderer) RegisterFuncs(reg renderer.NodeRendererFuncRegisterer) {
-	reg.Register(ast.KindFencedCodeBlock, r.renderFencedCodeBlock)
-}
-
-func getAttributes(node *ast.FencedCodeBlock, infostr []byte) ImmutableAttributes {
-	if node.Attributes() != nil {
-		return &immutableAttributes{node}
-	}
-	if infostr != nil {
-		attrStartIdx := -1
-
-		for idx, char := range infostr {
-			if char == '{' {
-				attrStartIdx = idx
-				break
-			}
-		}
-		if attrStartIdx > 0 {
-			n := ast.NewTextBlock() // dummy node for storing attributes
-			attrStr := infostr[attrStartIdx:]
-			if attrs, hasAttr := parser.ParseAttributes(text.NewReader(attrStr)); hasAttr {
-				for _, attr := range attrs {
-					n.SetAttribute(attr.Name, attr.Value)
-				}
-				return &immutableAttributes{n}
-			}
-		}
-	}
-	return nil
-}
-
-func (r *HTMLRenderer) renderFencedCodeBlock(w util.BufWriter, source []byte, node ast.Node, entering bool) (ast.WalkStatus, error) {
-	n := node.(*ast.FencedCodeBlock)
-	if !entering {
-		return ast.WalkContinue, nil
-	}
-	language := n.Language(source)
-
-	chromaFormatterOptions := make([]chromahtml.Option, len(r.FormatOptions))
-	copy(chromaFormatterOptions, r.FormatOptions)
-	style := styles.Get(r.Style)
-	nohl := false
-
-	var info []byte
-	if n.Info != nil {
-		info = n.Info.Segment.Value(source)
-	}
-	attrs := getAttributes(n, info)
-	if attrs != nil {
-		baseLineNumber := 1
-		if linenostartAttr, ok := attrs.Get(linenostartAttrName); ok {
-			baseLineNumber = int(linenostartAttr.(float64))
-			chromaFormatterOptions = append(chromaFormatterOptions, chromahtml.BaseLineNumber(baseLineNumber))
-		}
-		if linesAttr, hasLinesAttr := attrs.Get(highlightLinesAttrName); hasLinesAttr {
-			if lines, ok := linesAttr.([]interface{}); ok {
-				var hlRanges [][2]int
-				for _, l := range lines {
-					if ln, ok := l.(float64); ok {
-						hlRanges = append(hlRanges, [2]int{int(ln) + baseLineNumber - 1, int(ln) + baseLineNumber - 1})
-					}
-					if rng, ok := l.([]uint8); ok {
-						slices := strings.Split(string([]byte(rng)), "-")
-						lhs, err := strconv.Atoi(slices[0])
-						if err != nil {
-							continue
-						}
-						rhs := lhs
-						if len(slices) > 1 {
-							rhs, err = strconv.Atoi(slices[1])
-							if err != nil {
-								continue
-							}
-						}
-						hlRanges = append(hlRanges, [2]int{lhs + baseLineNumber - 1, rhs + baseLineNumber - 1})
-					}
-				}
-				chromaFormatterOptions = append(chromaFormatterOptions, chromahtml.HighlightLines(hlRanges))
-			}
-		}
-		if styleAttr, hasStyleAttr := attrs.Get(styleAttrName); hasStyleAttr {
-			styleStr := string([]byte(styleAttr.([]uint8)))
-			style = styles.Get(styleStr)
-		}
-		if _, hasNohlAttr := attrs.Get(nohlAttrName); hasNohlAttr {
-			nohl = true
-		}
-
-		if linenosAttr, ok := attrs.Get(linenosAttrName); ok {
-			switch v := linenosAttr.(type) {
-			case bool:
-				chromaFormatterOptions = append(chromaFormatterOptions, chromahtml.WithLineNumbers(v))
-			case []uint8:
-				if v != nil {
-					chromaFormatterOptions = append(chromaFormatterOptions, chromahtml.WithLineNumbers(true))
-				}
-				if bytes.Equal(v, linenosTableAttrValue) {
-					chromaFormatterOptions = append(chromaFormatterOptions, chromahtml.LineNumbersInTable(true))
-				} else if bytes.Equal(v, linenosInlineAttrValue) {
-					chromaFormatterOptions = append(chromaFormatterOptions, chromahtml.LineNumbersInTable(false))
-				}
-			}
-		}
-	}
-
-	var lexer chroma.Lexer
-	if language != nil {
-		lexer = lexers.Get(string(language))
-	}
-	if !nohl && lexer != nil {
-		if style == nil {
-			style = styles.Fallback
-		}
-		var buffer bytes.Buffer
-		l := n.Lines().Len()
-		for i := 0; i < l; i++ {
-			line := n.Lines().At(i)
-			buffer.Write(line.Value(source))
-		}
-		iterator, err := lexer.Tokenise(nil, buffer.String())
-		if err == nil {
-			c := newCodeBlockContext(language, true, attrs)
-
-			if r.CodeBlockOptions != nil {
-				chromaFormatterOptions = append(chromaFormatterOptions, r.CodeBlockOptions(c)...)
-			}
-			formatter := chromahtml.New(chromaFormatterOptions...)
-			if r.WrapperRenderer != nil {
-				r.WrapperRenderer(w, c, true)
-			}
-			_ = formatter.Format(w, style, iterator) == nil
-			if r.WrapperRenderer != nil {
-				r.WrapperRenderer(w, c, false)
-			}
-			if r.CSSWriter != nil {
-				_ = formatter.WriteCSS(r.CSSWriter, style)
-			}
-			return ast.WalkContinue, nil
-		}
-	}
-
-	var c CodeBlockContext
-	if r.WrapperRenderer != nil {
-		c = newCodeBlockContext(language, false, attrs)
-		r.WrapperRenderer(w, c, true)
-	} else {
-		_, _ = w.WriteString("<pre><code")
-		language := n.Language(source)
-		if language != nil {
-			_, _ = w.WriteString(" class=\"language-")
-			r.Writer.Write(w, language)
-			_, _ = w.WriteString("\"")
-		}
-		_ = w.WriteByte('>')
-	}
-	l := n.Lines().Len()
-	for i := 0; i < l; i++ {
-		line := n.Lines().At(i)
-		r.Writer.RawWrite(w, line.Value(source))
-	}
-	if r.WrapperRenderer != nil {
-		r.WrapperRenderer(w, c, false)
-	} else {
-		_, _ = w.WriteString("</code></pre>\n")
-	}
-	return ast.WalkContinue, nil
-}
-
-type highlighting struct {
-	options []Option
-}
-
-// Highlighting is a goldmark.Extender implementation.
-var Highlighting = &highlighting{
-	options: []Option{},
-}
-
-// NewHighlighting returns a new extension with given options.
-func NewHighlighting(opts ...Option) goldmark.Extender {
-	return &highlighting{
-		options: opts,
-	}
-}
-
-// Extend implements goldmark.Extender.
-func (e *highlighting) Extend(m goldmark.Markdown) {
-	m.Renderer().AddOptions(renderer.WithNodeRenderers(
-		util.Prioritized(NewHTMLRenderer(e.options...), 200),
-	))
-}
diff --git a/markup/highlight/temphighlighting/highlighting_test.go b/markup/highlight/temphighlighting/highlighting_test.go
deleted file mode 100644
index a2d605856..000000000
--- a/markup/highlight/temphighlighting/highlighting_test.go
+++ /dev/null
@@ -1,308 +0,0 @@
-// TODO(bep) this is a very temporary fork based on https://github.com/yuin/goldmark-highlighting/pull/10
-// MIT Licensed, Copyright Yusuke Inuzuka
-package temphighlighting
-
-import (
-	"bytes"
-	"fmt"
-	"strings"
-	"testing"
-
-	chromahtml "github.com/alecthomas/chroma/formatters/html"
-	"github.com/yuin/goldmark"
-	"github.com/yuin/goldmark/util"
-)
-
-func TestHighlighting(t *testing.T) {
-	var css bytes.Buffer
-	markdown := goldmark.New(
-		goldmark.WithExtensions(
-			NewHighlighting(
-				WithStyle("monokai"),
-				WithCSSWriter(&css),
-				WithFormatOptions(
-					chromahtml.WithClasses(true),
-					chromahtml.WithLineNumbers(false),
-				),
-				WithWrapperRenderer(func(w util.BufWriter, c CodeBlockContext, entering bool) {
-					_, ok := c.Language()
-					if entering {
-						if !ok {
-							w.WriteString("<pre><code>")
-							return
-						}
-						w.WriteString(`<div class="highlight">`)
-					} else {
-						if !ok {
-							w.WriteString("</pre></code>")
-							return
-						}
-						w.WriteString(`</div>`)
-					}
-				}),
-				WithCodeBlockOptions(func(c CodeBlockContext) []chromahtml.Option {
-					if language, ok := c.Language(); ok {
-						// Turn on line numbers for Go only.
-						if string(language) == "go" {
-							return []chromahtml.Option{
-								chromahtml.WithLineNumbers(true),
-							}
-						}
-					}
-					return nil
-				}),
-			),
-		),
-	)
-	var buffer bytes.Buffer
-	if err := markdown.Convert([]byte(`
-Title
-=======
-`+"``` go\n"+`func main() {
-    fmt.Println("ok")
-}
-`+"```"+`
-`), &buffer); err != nil {
-		t.Fatal(err)
-	}
-
-	if strings.TrimSpace(buffer.String()) != strings.TrimSpace(`
-<h1>Title</h1>
-<div class="highlight"><pre class="chroma"><span class="ln">1</span><span class="kd">func</span> <span class="nf">main</span><span class="p">(</span><span class="p">)</span> <span class="p">{</span>
-<span class="ln">2</span>    <span class="nx">fmt</span><span class="p">.</span><span class="nf">Println</span><span class="p">(</span><span class="s">&#34;ok&#34;</span><span class="p">)</span>
-<span class="ln">3</span><span class="p">}</span>
-</pre></div>
-`) {
-		t.Error("failed to render HTML")
-	}
-
-	if strings.TrimSpace(css.String()) != strings.TrimSpace(`/* Background */ .chroma { color: #f8f8f2; background-color: #272822 }
-/* Error */ .chroma .err { color: #960050; background-color: #1e0010 }
-/* LineTableTD */ .chroma .lntd { vertical-align: top; padding: 0; margin: 0; border: 0; }
-/* LineTable */ .chroma .lntable { border-spacing: 0; padding: 0; margin: 0; border: 0; width: auto; overflow: auto; display: block; }
-/* LineHighlight */ .chroma .hl { display: block; width: 100%;background-color: #3c3d38 }
-/* LineNumbersTable */ .chroma .lnt { margin-right: 0.4em; padding: 0 0.4em 0 0.4em;color: #7f7f7f }
-/* LineNumbers */ .chroma .ln { margin-right: 0.4em; padding: 0 0.4em 0 0.4em;color: #7f7f7f }
-/* Keyword */ .chroma .k { color: #66d9ef }
-/* KeywordConstant */ .chroma .kc { color: #66d9ef }
-/* KeywordDeclaration */ .chroma .kd { color: #66d9ef }
-/* KeywordNamespace */ .chroma .kn { color: #f92672 }
-/* KeywordPseudo */ .chroma .kp { color: #66d9ef }
-/* KeywordReserved */ .chroma .kr { color: #66d9ef }
-/* KeywordType */ .chroma .kt { color: #66d9ef }
-/* NameAttribute */ .chroma .na { color: #a6e22e }
-/* NameClass */ .chroma .nc { color: #a6e22e }
-/* NameConstant */ .chroma .no { color: #66d9ef }
-/* NameDecorator */ .chroma .nd { color: #a6e22e }
-/* NameException */ .chroma .ne { color: #a6e22e }
-/* NameFunction */ .chroma .nf { color: #a6e22e }
-/* NameOther */ .chroma .nx { color: #a6e22e }
-/* NameTag */ .chroma .nt { color: #f92672 }
-/* Literal */ .chroma .l { color: #ae81ff }
-/* LiteralDate */ .chroma .ld { color: #e6db74 }
-/* LiteralString */ .chroma .s { color: #e6db74 }
-/* LiteralStringAffix */ .chroma .sa { color: #e6db74 }
-/* LiteralStringBacktick */ .chroma .sb { color: #e6db74 }
-/* LiteralStringChar */ .chroma .sc { color: #e6db74 }
-/* LiteralStringDelimiter */ .chroma .dl { color: #e6db74 }
-/* LiteralStringDoc */ .chroma .sd { color: #e6db74 }
-/* LiteralStringDouble */ .chroma .s2 { color: #e6db74 }
-/* LiteralStringEscape */ .chroma .se { color: #ae81ff }
-/* LiteralStringHeredoc */ .chroma .sh { color: #e6db74 }
-/* LiteralStringInterpol */ .chroma .si { color: #e6db74 }
-/* LiteralStringOther */ .chroma .sx { color: #e6db74 }
-/* LiteralStringRegex */ .chroma .sr { color: #e6db74 }
-/* LiteralStringSingle */ .chroma .s1 { color: #e6db74 }
-/* LiteralStringSymbol */ .chroma .ss { color: #e6db74 }
-/* LiteralNumber */ .chroma .m { color: #ae81ff }
-/* LiteralNumberBin */ .chroma .mb { color: #ae81ff }
-/* LiteralNumberFloat */ .chroma .mf { color: #ae81ff }
-/* LiteralNumberHex */ .chroma .mh { color: #ae81ff }
-/* LiteralNumberInteger */ .chroma .mi { color: #ae81ff }
-/* LiteralNumberIntegerLong */ .chroma .il { color: #ae81ff }
-/* LiteralNumberOct */ .chroma .mo { color: #ae81ff }
-/* Operator */ .chroma .o { color: #f92672 }
-/* OperatorWord */ .chroma .ow { color: #f92672 }
-/* Comment */ .chroma .c { color: #75715e }
-/* CommentHashbang */ .chroma .ch { color: #75715e }
-/* CommentMultiline */ .chroma .cm { color: #75715e }
-/* CommentSingle */ .chroma .c1 { color: #75715e }
-/* CommentSpecial */ .chroma .cs { color: #75715e }
-/* CommentPreproc */ .chroma .cp { color: #75715e }
-/* CommentPreprocFile */ .chroma .cpf { color: #75715e }
-/* GenericDeleted */ .chroma .gd { color: #f92672 }
-/* GenericEmph */ .chroma .ge { font-style: italic }
-/* GenericInserted */ .chroma .gi { color: #a6e22e }
-/* GenericStrong */ .chroma .gs { font-weight: bold }
-/* GenericSubheading */ .chroma .gu { color: #75715e }`) {
-		t.Error("failed to render CSS")
-	}
-}
-
-func TestHighlighting2(t *testing.T) {
-	markdown := goldmark.New(
-		goldmark.WithExtensions(
-			Highlighting,
-		),
-	)
-	var buffer bytes.Buffer
-	if err := markdown.Convert([]byte(`
-Title
-=======
-`+"```"+`
-func main() {
-    fmt.Println("ok")
-}
-`+"```"+`
-`), &buffer); err != nil {
-		t.Fatal(err)
-	}
-
-	if strings.TrimSpace(buffer.String()) != strings.TrimSpace(`
-<h1>Title</h1>
-<pre><code>func main() {
-    fmt.Println(&quot;ok&quot;)
-}
-</code></pre>
-`) {
-		t.Error("failed to render HTML")
-	}
-}
-
-func TestHighlighting3(t *testing.T) {
-	markdown := goldmark.New(
-		goldmark.WithExtensions(
-			Highlighting,
-		),
-	)
-	var buffer bytes.Buffer
-	if err := markdown.Convert([]byte(`
-Title
-=======
-
-`+"```"+`cpp {hl_lines=[1,2]}
-#include <iostream>
-int main() {
-    std::cout<< "hello" << std::endl;
-}
-`+"```"+`
-`), &buffer); err != nil {
-		t.Fatal(err)
-	}
-	if strings.TrimSpace(buffer.String()) != strings.TrimSpace(`
-<h1>Title</h1>
-<pre style="background-color:#fff"><span style="display:block;width:100%;background-color:#e5e5e5"><span style="color:#999;font-weight:bold;font-style:italic">#</span><span style="color:#999;font-weight:bold;font-style:italic">include</span> <span style="color:#999;font-weight:bold;font-style:italic">&lt;iostream&gt;</span><span style="color:#999;font-weight:bold;font-style:italic">
-</span></span><span style="display:block;width:100%;background-color:#e5e5e5"><span style="color:#999;font-weight:bold;font-style:italic"></span><span style="color:#458;font-weight:bold">int</span> <span style="color:#900;font-weight:bold">main</span>() {
-</span>    std<span style="color:#000;font-weight:bold">:</span><span style="color:#000;font-weight:bold">:</span>cout<span style="color:#000;font-weight:bold">&lt;</span><span style="color:#000;font-weight:bold">&lt;</span> <span style="color:#d14"></span><span style="color:#d14">&#34;</span><span style="color:#d14">hello</span><span style="color:#d14">&#34;</span> <span style="color:#000;font-weight:bold">&lt;</span><span style="color:#000;font-weight:bold">&lt;</span> std<span style="color:#000;font-weight:bold">:</span><span style="color:#000;font-weight:bold">:</span>endl;
-}
-</pre>
-`) {
-		t.Error("failed to render HTML")
-	}
-}
-
-func TestHighlightingHlLines(t *testing.T) {
-	markdown := goldmark.New(
-		goldmark.WithExtensions(
-			NewHighlighting(
-				WithFormatOptions(
-					chromahtml.WithClasses(true),
-				),
-			),
-		),
-	)
-
-	for i, test := range []struct {
-		attributes string
-		expect     []int
-	}{
-		{`hl_lines=["2"]`, []int{2}},
-		{`hl_lines=["2-3",5],linenostart=5`, []int{2, 3, 5}},
-		{`hl_lines=["2-3"]`, []int{2, 3}},
-	} {
-		t.Run(fmt.Sprint(i), func(t *testing.T) {
-			var buffer bytes.Buffer
-			codeBlock := fmt.Sprintf(`bash {%s}
-LINE1
-LINE2
-LINE3
-LINE4
-LINE5
-LINE6
-LINE7
-LINE8
-`, test.attributes)
-
-			if err := markdown.Convert([]byte(`
-`+"```"+codeBlock+"```"+`
-`), &buffer); err != nil {
-				t.Fatal(err)
-			}
-
-			for _, line := range test.expect {
-				expectStr := fmt.Sprintf("<span class=\"hl\">LINE%d\n</span>", line)
-				if !strings.Contains(buffer.String(), expectStr) {
-					t.Fatal("got\n", buffer.String(), "\nexpected\n", expectStr)
-				}
-			}
-		})
-	}
-}
-
-func TestHighlightingLinenos(t *testing.T) {
-	outputLineNumbersInTable := `<div class="chroma">
-<table class="lntable"><tr><td class="lntd">
-<span class="lnt">1
-</span></td>
-<td class="lntd">
-LINE1
-</td></tr></table>
-</div>`
-
-	for i, test := range []struct {
-		attributes         string
-		lineNumbers        bool
-		lineNumbersInTable bool
-		expect             string
-	}{
-		{`linenos=true`, false, false, `<span class="ln">1</span>LINE1`},
-		{`linenos=false`, false, false, `LINE1`},
-		{``, true, false, `<span class="ln">1</span>LINE1`},
-		{``, true, true, outputLineNumbersInTable},
-		{`linenos=inline`, true, true, `<span class="ln">1</span>LINE1`},
-		{`linenos=foo`, false, false, `<span class="ln">1</span>LINE1`},
-		{`linenos=table`, false, false, outputLineNumbersInTable},
-	} {
-		t.Run(fmt.Sprint(i), func(t *testing.T) {
-			markdown := goldmark.New(
-				goldmark.WithExtensions(
-					NewHighlighting(
-						WithFormatOptions(
-							chromahtml.WithLineNumbers(test.lineNumbers),
-							chromahtml.LineNumbersInTable(test.lineNumbersInTable),
-							chromahtml.PreventSurroundingPre(true),
-							chromahtml.WithClasses(true),
-						),
-					),
-				),
-			)
-
-			var buffer bytes.Buffer
-			codeBlock := fmt.Sprintf(`bash {%s}
-LINE1
-`, test.attributes)
-
-			content := "```" + codeBlock + "```"
-
-			if err := markdown.Convert([]byte(content), &buffer); err != nil {
-				t.Fatal(err)
-			}
-
-			s := strings.TrimSpace(buffer.String())
-
-			if s != test.expect {
-				t.Fatal("got\n", s, "\nexpected\n", test.expect)
-			}
-		})
-	}
-}