From d99269afac7acc3f5a1ed0b2b6dfbea6890f8b44 Mon Sep 17 00:00:00 2001
From: Greg Johnston <greg.johnston@gmail.com>
Date: Fri, 22 Sep 2023 17:29:55 -0400
Subject: [PATCH] docs: error in `view!` macro if you use `cx,` (#1772)

---
 leptos_macro/src/view/client_builder.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/leptos_macro/src/view/client_builder.rs b/leptos_macro/src/view/client_builder.rs
index 6cd21bd521..b4fa314579 100644
--- a/leptos_macro/src/view/client_builder.rs
+++ b/leptos_macro/src/view/client_builder.rs
@@ -127,6 +127,12 @@ pub(crate) fn node_to_tokens(
         Node::Block(node) => Some(quote! { #node }),
         Node::RawText(r) => {
             let text = r.to_string_best();
+            if text == "cx," {
+                proc_macro_error::abort!(
+                    r.span(),
+                    "`cx,` is not used with the `view!` macro in 0.5."
+                )
+            }
             let text = syn::LitStr::new(&text, r.span());
             Some(quote! { #text })
         }