shithub: hugo

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Add support for GitHub-flavoured markdown code fences for highlighting

This commit adds a new PygmentsCodeFences config option (default false), which if true will allow GitHub style backtick code fences around code, which will then be rendered by Pygments.

For example:

``` language
your code
```

can be used instead of {{< highlight language >}}your code {{< /highlight >}}.

Fixes #362

--- a/commands/hugo.go

+++ b/commands/hugo.go

@@ -148,6 +148,7 @@

 	viper.SetDefault("PygmentsStyle", "monokai")

 	viper.SetDefault("DefaultExtension", "html")

 	viper.SetDefault("PygmentsUseClasses", false)

+	viper.SetDefault("PygmentsCodeFences", false)

 	viper.SetDefault("DisableLiveReload", false)

 	viper.SetDefault("PluralizeListTitles", true)

 	viper.SetDefault("PreserveTaxonomyNames", false)

--- a/helpers/content.go

+++ b/helpers/content.go

@@ -167,8 +167,11 @@

 		htmlFlags |= blackfriday.HTML_SMARTYPANTS_LATEX_DASHES

 	}

-	return blackfriday.HtmlRendererWithParameters(htmlFlags, "", "", renderParameters)

+	return &HugoHtmlRenderer{

+		blackfriday.HtmlRendererWithParameters(htmlFlags, "", "", renderParameters),

+	}

 }

+

 func getMarkdownExtensions(ctx *RenderingContext) int {

 	flags := 0 | blackfriday.EXTENSION_NO_INTRA_EMPHASIS |

--- /dev/null

+++ b/helpers/content_renderer.go

@@ -1,0 +1,23 @@

+package helpers

+

+import (

+	"bytes"

+	"html"

+

+	"github.com/russross/blackfriday"

+	"github.com/spf13/viper"

+)

+

+// Wraps a blackfriday.Renderer, typically a blackfriday.Html

+type HugoHtmlRenderer struct {

+	blackfriday.Renderer

+}

+

+func (renderer *HugoHtmlRenderer) BlockCode(out *bytes.Buffer, text []byte, lang string) {

+	if viper.GetBool("PygmentsCodeFences") {

+		str := html.UnescapeString(string(text))

+		out.WriteString(Highlight(str, lang, ""))

+	} else {

+		renderer.Renderer.BlockCode(out, text, lang)

+	}

+}