From 1437a799e57cdcffc54ca2267406f725106ee50a Mon Sep 17 00:00:00 2001
From: Tulir Asokan <tulir@maunium.net>
Date: Tue, 20 Oct 2020 13:29:50 +0300
Subject: [PATCH] Don't panic on empty code block. Fixes #237

---
 ui/messages/html/parser.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ui/messages/html/parser.go b/ui/messages/html/parser.go
index c45e8ce..d7ed66c 100644
--- a/ui/messages/html/parser.go
+++ b/ui/messages/html/parser.go
@@ -320,7 +320,7 @@ func (parser *htmlParser) syntaxHighlight(text, language string) Entity {
 func (parser *htmlParser) codeblockToEntity(node *html.Node) Entity {
 	lang := "plaintext"
 	// TODO allow disabling syntax highlighting
-	if node.FirstChild.Type == html.ElementNode && node.FirstChild.Data == "code" {
+	if node.FirstChild != nil && node.FirstChild.Type == html.ElementNode && node.FirstChild.Data == "code" {
 		node = node.FirstChild
 		attr := parser.getAttribute(node, "class")
 		for _, class := range strings.Split(attr, " ") {