Add support for :emoji:

ansi/elements.go

@@ -7,6 +7,7 @@ import (
 	"io"
 	"strings"
 
+	east "github.com/yuin/goldmark-emoji/ast"
 	"github.com/yuin/goldmark/ast"
 	astext "github.com/yuin/goldmark/extension/ast"
 )
@@ -375,6 +376,14 @@ func (tr *ANSIRenderer) NewElement(node ast.Node, source []byte) Element {
 	case ast.KindTextBlock:
 		return Element{}
 
+	case east.KindEmoji:
+		n := node.(*east.Emoji)
+		return Element{
+			Renderer: &BaseElement{
+				Token: string(n.Value.Unicode),
+			},
+		}
+
 	// Unknown case
 	default:
 		fmt.Println("Warning: unhandled element", node.Kind().String())

ansi/renderer.go

@@ -6,6 +6,7 @@ import (
 	"strings"
 
 	"github.com/muesli/termenv"
+	east "github.com/yuin/goldmark-emoji/ast"
 	"github.com/yuin/goldmark/ast"
 	astext "github.com/yuin/goldmark/extension/ast"
 	"github.com/yuin/goldmark/renderer"
@@ -79,6 +80,9 @@ func (r *ANSIRenderer) RegisterFuncs(reg renderer.NodeRendererFuncRegisterer) {
 
 	// strikethrough
 	reg.Register(astext.KindStrikethrough, r.renderNode)
+
+	// emoji
+	reg.Register(east.KindEmoji, r.renderNode)
 }
 
 func (r *ANSIRenderer) renderNode(w util.BufWriter, source []byte, node ast.Node, entering bool) (ast.WalkStatus, error) {

ansi/renderer_test.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/muesli/termenv"
 	"github.com/yuin/goldmark"
+	emoji "github.com/yuin/goldmark-emoji"
 	"github.com/yuin/goldmark/extension"
 	"github.com/yuin/goldmark/parser"
 	"github.com/yuin/goldmark/renderer"
@@ -56,6 +57,7 @@ func TestRenderer(t *testing.T) {
 			goldmark.WithExtensions(
 				extension.GFM,
 				extension.DefinitionList,
+				emoji.Emoji,
 			),
 			goldmark.WithParserOptions(
 				parser.WithAutoHeadingID(),
@@ -127,6 +129,7 @@ func TestRendererIssues(t *testing.T) {
 			goldmark.WithExtensions(
 				extension.GFM,
 				extension.DefinitionList,
+				emoji.Emoji,
 			),
 			goldmark.WithParserOptions(
 				parser.WithAutoHeadingID(),

glamour.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/muesli/termenv"
 	"github.com/yuin/goldmark"
+	emoji "github.com/yuin/goldmark-emoji"
 	"github.com/yuin/goldmark/extension"
 	"github.com/yuin/goldmark/parser"
 	"github.com/yuin/goldmark/renderer"
@@ -184,6 +185,14 @@ func WithWordWrap(wordWrap int) TermRendererOption {
 	}
 }
 
+// WithEmoji sets a TermRenderer's emoji rendering.
+func WithEmoji() TermRendererOption {
+	return func(tr *TermRenderer) error {
+		emoji.New().Extend(tr.md)
+		return nil
+	}
+}
+
 func (tr *TermRenderer) Read(b []byte) (int, error) {
 	return tr.renderBuf.Read(b)
 }

glamour_test.go

@@ -3,6 +3,7 @@ package glamour
 import (
 	"bytes"
 	"io/ioutil"
+	"strings"
 	"testing"
 )
 
@@ -90,6 +91,28 @@ func TestTermRenderer(t *testing.T) {
 	}
 }
 
+func TestWithEmoji(t *testing.T) {
+	r, err := NewTermRenderer(
+		WithEmoji(),
+	)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	b, err := r.Render(":+1:")
+	if err != nil {
+		t.Fatal(err)
+	}
+	b = strings.TrimSpace(b)
+
+	// Thumbs up unicode character
+	td := "\U0001f44d"
+
+	if td != b {
+		t.Errorf("Rendered output doesn't match!\nExpected: `\n%s`\nGot: `\n%s`\n", td, b)
+	}
+}
+
 func TestStyles(t *testing.T) {
 	_, err := NewTermRenderer(
 		WithAutoStyle(),

go.mod

@@ -9,4 +9,5 @@ require (
 	github.com/muesli/termenv v0.7.4
 	github.com/olekukonko/tablewriter v0.0.4
 	github.com/yuin/goldmark v1.2.1
+	github.com/yuin/goldmark-emoji v1.0.1
 )

go.sum

@@ -49,6 +49,8 @@ github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/yuin/goldmark v1.2.1 h1:ruQGxdhGHe7FWOJPT0mKs5+pD2Xs1Bm/kdGlHO04FmM=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/yuin/goldmark-emoji v1.0.1 h1:ctuWEyzGBwiucEqxzwe0SOYDXPAucOrE9NQC18Wa1os=
+github.com/yuin/goldmark-emoji v1.0.1/go.mod h1:2w1E6FEWLcDQkoTE+7HU6QF1F6SLlNGjRIBbIZQFqkQ=
 golang.org/x/net v0.0.0-20181220203305-927f97764cc3 h1:eH6Eip3UpmR+yM/qI9Ijluzb1bNv/cAU/n+6l8tRSis=
 golang.org/x/net v0.0.0-20181220203305-927f97764cc3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42 h1:vEOn+mP2zCOVzKckCZy6YsCtDblrpj/w7B9nxGNELpg=

styles/examples/emoji.md

@@ -0,0 +1 @@
+:octopus: :zap: :cat: = :heart:

styles/examples/emoji.style

@@ -0,0 +1 @@
+{ "emoji": {} }

testdata/emoji.test

@@ -0,0 +1 @@
+🐙 ⚡ 🐱 = ❤️                                                                   

testdata/issues/48.md

@@ -0,0 +1,16 @@
+emoji in text
+
+:octopus: :zap: :cat: = :heart:
+
+emoji in header
+
+## :octopus: :zap: :cat: = :heart:
+
+no emoji in code blocks
+```
+:octopus: :zap: :cat: = :heart:
+```
+
+no emoji in inline code
+
+`:octopus: :zap: :cat: = :heart:`