Merge pull request #64 from mmarkdown/index-idx

index: use idx-N for the ID

ast/node.go

@@ -373,7 +373,7 @@ type Index struct {
 	Primary bool
 	Item    []byte
 	Subitem []byte
-	ID      int // number of the index
+	ID      string // ID of the index
 }
 
 func removeNodeFromArray(a []Node, node Node) []Node {

html/renderer.go

@@ -872,7 +872,7 @@ func (r *Renderer) callout(w io.Writer, node *ast.Callout) {
 
 func (r *Renderer) index(w io.Writer, node *ast.Index) {
 	// there is no in-text representation.
-	attr := []string{`class="index"`, fmt.Sprintf(`id="%d"`, node.ID)}
+	attr := []string{`class="index"`, fmt.Sprintf(`id="%s"`, node.ID)}
 	r.outTag(w, "<span", attr)
 	r.outs(w, "</span>")
 }

parser/ref.go

@@ -2,6 +2,7 @@ package parser
 
 import (
 	"bytes"
+	"fmt"
 
 	"github.com/gomarkdown/markdown/ast"
 )
@@ -63,7 +64,7 @@ func maybeShortRefOrIndex(p *Parser, data []byte, offset int) (int, ast.Node) {
 
 		idx := &ast.Index{}
 
-		idx.ID = p.indexCnt
+		idx.ID = fmt.Sprintf("idx-%d", p.indexCnt)
 		p.indexCnt++
 
 		idx.Primary = data[start] == '!'

testdata/mmark.test

@@ -87,9 +87,9 @@ code
 ---
 <h1>Index</h1>
 
-<p><span class="index" id="0"></span>
-<span class="index" id="1"></span>
-<span class="index" id="2"></span></p>
+<p><span class="index" id="idx-0"></span>
+<span class="index" id="idx-1"></span>
+<span class="index" id="idx-2"></span></p>
 ---
 # Cross ref
 Look at (#basics)