From 810536fb1f068f969af316be0450a1edacfe8e28 Mon Sep 17 00:00:00 2001
From: 魏曹先生 <1992414357@qq.com>
Date: Sat, 11 Jul 2026 16:03:20 +0800
Subject: docs: migrate renderers from `r_println!` to `RenderResult` return
 type

---
 docs/pages/9-error-handling.md | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

(limited to 'docs/pages/9-error-handling.md')

diff --git a/docs/pages/9-error-handling.md b/docs/pages/9-error-handling.md
index ec1f422..3e004f2 100644
--- a/docs/pages/9-error-handling.md
+++ b/docs/pages/9-error-handling.md
@@ -44,13 +44,17 @@ Then write separate Renderers:
 @@@#[chain] fn handle_greet(args: EntryGreet) -> Next { ResultGreeting::new(args.inner.first().cloned().unwrap_or_default()).to_render() }
  
 #[renderer]
-fn render_greeting(result: ResultGreeting) {
-    r_println!("Hello, {}!", *result);
+fn render_greeting(result: ResultGreeting) -> RenderResult {
+    let mut r = RenderResult::new();
+    writeln!(r, "Hello, {}!", *result).ok();
+    r
 }
  
 #[renderer]
-fn render_error_name_empty(err: ErrorNameEmpty) {
-    r_println!("Error: {}", *err);
+fn render_error_name_empty(err: ErrorNameEmpty) -> RenderResult {
+    let mut r = RenderResult::new();
+    writeln!(r, "Error: {}", *err).ok();
+    r
 }
 ```
  
@@ -75,13 +79,17 @@ fn handle_greet(args: EntryGreet) -> Next {
 }
  
 #[renderer]
-fn render_greeting(result: ResultGreeting) {
-    r_println!("Hello, {}!", *result);
+fn render_greeting(result: ResultGreeting) -> RenderResult {
+    let mut r = RenderResult::new();
+    writeln!(r, "Hello, {}!", *result).ok();
+    r
 }
  
 #[renderer]
-fn render_error_name_empty(err: ErrorNameEmpty) {
-    r_println!("Error: {}", *err);
+fn render_error_name_empty(err: ErrorNameEmpty) -> RenderResult {
+    let mut r = RenderResult::new();
+    writeln!(r, "Error: {}", *err).ok();
+    r
 }
  
 fn main() {
-- 
cgit