code review 5320063: html: stop at scope marker node when generating implied...

src/pkg/html/parse.go

 // Copyright 2010 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package html
 
 import (
         "io"
         "os"
         "strings"
@@ skipping 535 matching lines @@
                         p.popUntil(buttonScopeStopTags, "p")
                         p.addElement(p.tok.Data, p.tok.Attr)
                 case "h1", "h2", "h3", "h4", "h5", "h6":
                         p.popUntil(buttonScopeStopTags, "p")
                         switch n := p.top(); n.Data {
                         case "h1", "h2", "h3", "h4", "h5", "h6":
                                 p.oe.pop()
                         }
                         p.addElement(p.tok.Data, p.tok.Attr)
                 case "a":
-                        if n := p.afe.forTag("a"); n != nil {
-                                p.inBodyEndTagFormatting("a")
-                                p.oe.remove(n)
-                                p.afe.remove(n)
+                        for i := len(p.afe) - 1; i >= 0 && p.afe[i].Type != scopeMarkerNode; i-- {
+                                if n := p.afe[i]; n.Type == ElementNode && n.Data == "a" {
+                                        p.inBodyEndTagFormatting("a")
+                                        p.oe.remove(n)
+                                        p.afe.remove(n)
+                                        break
+                                }
                         }
                         p.reconstructActiveFormattingElements()
                         p.addFormattingElement(p.tok.Data, p.tok.Attr)
                 case "b", "big", "code", "em", "font", "i", "s", "small", "strike", "strong", "tt", "u":
                         p.reconstructActiveFormattingElements()
                         p.addFormattingElement(p.tok.Data, p.tok.Attr)
                 case "applet", "marquee", "object":
                         p.reconstructActiveFormattingElements()
                         p.addElement(p.tok.Data, p.tok.Attr)
                         p.afe = append(p.afe, &scopeMarker)
@@ skipping 586 matching lines @@
                 im, consumed = im(p)
         }
         // Loop until the final token (the ErrorToken signifying EOF) is consumed.
         for {
                 if im, consumed = im(p); consumed {
                         break
                 }
         }
         return p.doc, nil
 }