HTML: don't skip text with templates in select tag, fixes #698

Author: tdewolff

html/html.go

@@ -515,7 +515,7 @@ func (o *Minifier) Minify(m *minify.M, w io.Writer, r io.Reader, _ map[string]st
 
 			// skip text in select and optgroup tags
 			if t.Hash == Select || t.Hash == Optgroup {
-				if next := tb.Peek(0); next.TokenType == html.TextToken {
+				if next := tb.Peek(0); next.TokenType == html.TextToken && !next.HasTemplate {
 					tb.Shift()
 				}
 			}

html/html_test.go

@@ -373,6 +373,7 @@ func TestHTMLTemplates(t *testing.T) {
 		{`<div style=" color: {{.Color}} ">`, `<div style=" color: {{.Color}} ">`},
 		{`<script>alert( {{.Alert}} )</script>`, `<script>alert( {{.Alert}} )</script>`},
 		{`<button onclick=" alert( {{.Alert}} ) ">`, `<button onclick=" alert( {{.Alert}} ) ">`},
+		{`<select>{{ range . }}<option>{{ . }}{{ end }}</select>`, `<select>{{ range . }}<option>{{ . }}{{ end }}</select>`},
 	}
 
 	m := minify.New()