M inline.go → inline.go

@@ -617,6 +617,14 @@ 
 	return end
 }
 
+func linkEndsWithEntity(data []byte, linkEnd int) bool {
+	entityRanges := htmlEntity.FindAllIndex(data[:linkEnd], -1)
+	if entityRanges != nil && entityRanges[len(entityRanges)-1][1] == linkEnd {
+		return true
+	}
+	return false
+}
+
 func autoLink(p *parser, out *bytes.Buffer, data []byte, offset int) int {
 	// quick check to rule out most false hits on ':'
 	if p.insideLink || len(data) < offset+3 || data[offset+1] != '/' || data[offset+2] != '/' {
@@ -659,7 +667,12 @@ linkEnd++
 	}
 
 	// Skip punctuation at the end of the link
-	if (data[linkEnd-1] == '.' || data[linkEnd-1] == ',' || data[linkEnd-1] == ';') && data[linkEnd-2] != '\\' {
+	if (data[linkEnd-1] == '.' || data[linkEnd-1] == ',') && data[linkEnd-2] != '\\' {
+		linkEnd--
+	}
+
+	// But don't skip semicolon if it's a part of escaped entity:
+	if data[linkEnd-1] == ';' && data[linkEnd-2] != '\\' && !linkEndsWithEntity(data, linkEnd) {
 		linkEnd--
 	}
 

M inline_test.go → inline_test.go

@@ -698,6 +698,9 @@ "<p><a href=\"http://foo.com/viewtopic.php?f=18&amp;t=297\">http://foo.com/viewtopic.php?f=18&amp;t=297</a></p>\n",
 
 		"http://foo.com/viewtopic.php?param=&quot;18&quot;zz",
 		"<p><a href=\"http://foo.com/viewtopic.php?param=&quot;18&quot;zz\">http://foo.com/viewtopic.php?param=&quot;18&quot;zz</a></p>\n",
+
+		"http://foo.com/viewtopic.php?param=&quot;18&quot;",
+		"<p><a href=\"http://foo.com/viewtopic.php?param=&quot;18&quot;\">http://foo.com/viewtopic.php?param=&quot;18&quot;</a></p>\n",
 	}
 	doTestsInline(t, tests)
 }