From 594c1e4fa032f801c58485a1d2800f6038430457 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Manuel=20R=C3=BCger?= <manuel@rueg.eu>
Date: Fri, 13 Mar 2026 01:21:11 +0100
Subject: [PATCH] fix: guard FirstChild() nil in paragraph renderer

A paragraph node with no children causes FirstChild() to return nil,
making both the entering and leaving Kind() checks panic. Cache the
result once and treat nil the same as a non-RawHTML child (emit <p>).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
---
 renderer/paragraph.go | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/renderer/paragraph.go b/renderer/paragraph.go
index 49c69a1..070e276 100644
--- a/renderer/paragraph.go
+++ b/renderer/paragraph.go
@@ -24,8 +24,9 @@ func (r *ConfluenceParagraphRenderer) RegisterFuncs(reg renderer.NodeRendererFun
 }
 
 func (r *ConfluenceParagraphRenderer) renderParagraph(w util.BufWriter, source []byte, n ast.Node, entering bool) (ast.WalkStatus, error) {
+	firstChild := n.FirstChild()
 	if entering {
-		if n.FirstChild().Kind() != ast.KindRawHTML {
+		if firstChild == nil || firstChild.Kind() != ast.KindRawHTML {
 			if n.Attributes() != nil {
 				_, _ = w.WriteString("<p")
 				html.RenderAttributes(w, n, html.ParagraphAttributeFilter)
@@ -35,7 +36,7 @@ func (r *ConfluenceParagraphRenderer) renderParagraph(w util.BufWriter, source [
 			}
 		}
 	} else {
-		if n.FirstChild().Kind() != ast.KindRawHTML {
+		if firstChild == nil || firstChild.Kind() != ast.KindRawHTML {
 			_, _ = w.WriteString("</p>")
 		}
 		_, _ = w.WriteString("\n")