From 90adffd23695990e878303a4944fe953c0993789 Mon Sep 17 00:00:00 2001
From: liga <githubwindowsfryer.tacking693@passmail.net>
Date: Fri, 30 May 2025 20:20:41 +0000
Subject: [PATCH] fix: escape backslashes in debug locations for HTMLData
 serialization (#4116)

---
 packages/fullstack-protocol/src/lib.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/packages/fullstack-protocol/src/lib.rs b/packages/fullstack-protocol/src/lib.rs
index 7f92a9f3f..4d170ea7c 100644
--- a/packages/fullstack-protocol/src/lib.rs
+++ b/packages/fullstack-protocol/src/lib.rs
@@ -346,7 +346,15 @@ impl HTMLData {
             let body = list
                 .iter()
                 .map(|s| match s {
-                    Some(s) => format!(r#""{s}""#),
+                    Some(s) => {
+                        // Escape backslashes, quotes, and newlines
+                        let escaped = s
+                            .replace(r#"\"#, r#"\\"#)
+                            .replace("\n", r#"\n"#)
+                            .replace(r#"""#, r#"\""#);
+
+                        format!(r#""{escaped}""#)
+                    }
                     None => r#""unknown""#.to_string(),
                 })
                 .collect::<Vec<_>>()