Remove auto new tab for external links

extlinks.go

@@ -1,57 +0,0 @@
-package main
-
-import (
-	"strings"
-
-	"github.com/yuin/goldmark"
-	"github.com/yuin/goldmark/ast"
-	"github.com/yuin/goldmark/parser"
-	"github.com/yuin/goldmark/text"
-	"github.com/yuin/goldmark/util"
-)
-
-type extLinksTransformer struct{}
-
-func (extLinksTransformer) Transform(doc *ast.Document, reader text.Reader, pc parser.Context) {
-	ast.Walk(doc, func(n ast.Node, entering bool) (ast.WalkStatus, error) {
-		if !entering {
-			return ast.WalkContinue, nil
-		}
-		link, ok := n.(*ast.Link)
-		if !ok {
-			return ast.WalkContinue, nil
-		}
-		if isExternalURL(string(link.Destination)) {
-			link.SetAttribute([]byte("target"), []byte("_blank"))
-			link.SetAttribute([]byte("rel"), []byte("noopener noreferrer"))
-		}
-		return ast.WalkContinue, nil
-	})
-}
-
-func isExternalURL(dest string) bool {
-	if strings.HasPrefix(dest, "//") {
-		return true
-	}
-	i := strings.Index(dest, ":")
-	if i <= 0 {
-		return false
-	}
-	for _, c := range dest[:i] {
-		if !(c >= 'a' && c <= 'z') && !(c >= 'A' && c <= 'Z') &&
-			!(c >= '0' && c <= '9') && c != '+' && c != '-' && c != '.' {
-			return false
-		}
-	}
-	return true
-}
-
-type extLinksExt struct{}
-
-func newExtLinksExt() goldmark.Extender { return &extLinksExt{} }
-
-func (e *extLinksExt) Extend(m goldmark.Markdown) {
-	m.Parser().AddOptions(parser.WithASTTransformers(
-		util.Prioritized(extLinksTransformer{}, 999),
-	))
-}

render.go

@@ -24,7 +24,7 @@ var md goldmark.Markdown
 // targets against the filesystem.
 func initMarkdown(root string) {
 	md = goldmark.New(
-		goldmark.WithExtensions(extension.GFM, extension.Table, newWikiLinkExt(root), newWikiEmbedExt(root), newExtLinksExt()),
+		goldmark.WithExtensions(extension.GFM, extension.Table, newWikiLinkExt(root), newWikiEmbedExt(root)),
 		goldmark.WithParserOptions(parser.WithAutoHeadingID()),
 		goldmark.WithRendererOptions(html.WithUnsafe(), html.WithHardWraps()),
 	)