From 05d89a0b453fa00b429a3b89a8f9628580c05138 Mon Sep 17 00:00:00 2001
From: yuin <yuin@inforno.net>
Date: Sun, 17 Oct 2021 17:29:01 +0900
Subject: [PATCH] #248 - 7

---
 _test/extra.txt |  8 +++++++-
 parser/link.go  | 12 +++++++-----
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/_test/extra.txt b/_test/extra.txt
index f8d89e6..7e849f1 100644
--- a/_test/extra.txt
+++ b/_test/extra.txt
@@ -542,7 +542,6 @@ _a[b_c_](d)
 <p>[o] :x</p>
 //= = = = = = = = = = = = = = = = = = = = = = = =//
 
-
 42: Unclosed link reference titles can interrupt link references
 //- - - - - - - - -//
 [r]:
@@ -556,3 +555,10 @@ x
 <p>'</p>
 <p>'</p>
 //= = = = = = = = = = = = = = = = = = = = = = = =//
+
+43: A link containing an image containing a link should disable the outer link
+//- - - - - - - - -//
+[ ![ [b](c) ](x) ](y)
+//- - - - - - - - -//
+<p>[ <img src="x" alt=" b " /> ](y)</p>
+//= = = = = = = = = = = = = = = = = = = = = = = =//
diff --git a/parser/link.go b/parser/link.go
index 4717d6e..bd96dfb 100644
--- a/parser/link.go
+++ b/parser/link.go
@@ -140,7 +140,7 @@ func (s *linkParser) Parse(parent ast.Node, block text.Reader, pc Context) ast.N
 	}
 	block.Advance(1)
 	removeLinkLabelState(pc, last)
-	if s.containsLink(last) { // a link in a link text is not allowed
+	if !last.IsImage && s.containsLink(last) { // a link in a link text is not allowed
 		ast.MergeOrReplaceTextSegment(last.Parent(), last, last.Segment)
 		return nil
 	}
@@ -182,15 +182,17 @@ func (s *linkParser) Parse(parent ast.Node, block text.Reader, pc Context) ast.N
 	return link
 }
 
-func (s *linkParser) containsLink(last *linkLabelState) bool {
-	if last.IsImage {
+func (s *linkParser) containsLink(n ast.Node) bool {
+	if n == nil {
 		return false
 	}
-	var c ast.Node
-	for c = last; c != nil; c = c.NextSibling() {
+	for c := n; c != nil; c = c.NextSibling() {
 		if _, ok := c.(*ast.Link); ok {
 			return true
 		}
+		if s.containsLink(c.FirstChild()) {
+			return true
+		}
 	}
 	return false
 }