4 files changed, 10 insertions, 22 deletions
diff --git a/mingling_core/src/program/collection.rs b/mingling_core/src/program/collection.rs
index 044379c..d5aab4b 100644
--- a/mingling_core/src/program/collection.rs
+++ b/mingling_core/src/program/collection.rs
@@ -53,10 +53,10 @@ pub trait ProgramCollect {
     fn build_empty_result() -> AnyOutput<Self::Enum>;
 
     /// Render the input [`AnyOutput`](./struct.AnyOutput.html)
-    fn render(any: AnyOutput<Self::Enum>, r: &mut RenderResult);
+    fn render(any: AnyOutput<Self::Enum>) -> RenderResult;
 
     /// Render help for Entry
-    fn render_help(any: AnyOutput<Self::Enum>, r: &mut RenderResult);
+    fn render_help(any: AnyOutput<Self::Enum>) -> RenderResult;
 
     /// Find a matching chain to continue execution based on the input [AnyOutput](./struct.AnyOutput.html), returning a new [AnyOutput](./struct.AnyOutput.html)
     #[cfg(feature = "async")]
diff --git a/mingling_core/src/program/collection/mock.rs b/mingling_core/src/program/collection/mock.rs
index 568000a..9b2e7af 100644
--- a/mingling_core/src/program/collection/mock.rs
+++ b/mingling_core/src/program/collection/mock.rs
@@ -59,11 +59,11 @@ impl ProgramCollect for MockProgramCollect {
         unreachable!()
     }
 
-    fn render(_any: AnyOutput<Self::Enum>, _r: &mut RenderResult) {
+    fn render(_any: AnyOutput<Self::Enum>) -> RenderResult {
         unreachable!()
     }
 
-    fn render_help(_any: AnyOutput<Self::Enum>, _r: &mut RenderResult) {
+    fn render_help(_any: AnyOutput<Self::Enum>) -> RenderResult {
         unreachable!()
     }
 
diff --git a/mingling_core/src/program/exec.rs b/mingling_core/src/program/exec.rs
index d1983ed..f5bdc2b 100644
--- a/mingling_core/src/program/exec.rs
+++ b/mingling_core/src/program/exec.rs
@@ -461,19 +461,13 @@ pub(crate) fn handle_program_control<C: ProgramCollect<Enum = C>>(
 fn render<C: ProgramCollect<Enum = C>>(program: &Program<C>, any: AnyOutput<C>) -> RenderResult {
     #[cfg(not(feature = "structural_renderer"))]
     {
-        let mut render_result = RenderResult::default();
-        C::render(any, &mut render_result);
-        render_result
+        C::render(any)
     }
     #[cfg(feature = "structural_renderer")]
     {
         #[allow(unreachable_patterns)]
         match program.structural_renderer_name {
-            super::StructuralRendererSetting::Disable => {
-                let mut render_result = RenderResult::default();
-                C::render(any, &mut render_result);
-                render_result
-            }
+            super::StructuralRendererSetting::Disable => C::render(any),
             _ => C::structural_render(any, &program.structural_renderer_name).unwrap(),
         }
     }
@@ -487,19 +481,13 @@ fn render_help<C: ProgramCollect<Enum = C>>(
 ) -> RenderResult {
     #[cfg(not(feature = "structural_renderer"))]
     {
-        let mut render_result = RenderResult::default();
-        C::render_help(entry, &mut render_result);
-        render_result
+        C::render_help(entry)
     }
     #[cfg(feature = "structural_renderer")]
     {
         #[allow(unreachable_patterns)]
         match program.structural_renderer_name {
-            super::StructuralRendererSetting::Disable => {
-                let mut render_result = RenderResult::default();
-                C::render_help(entry, &mut render_result);
-                render_result
-            }
+            super::StructuralRendererSetting::Disable => C::render_help(entry),
             _ => RenderResult::default(),
         }
     }
diff --git a/mingling_core/src/program/hook.rs b/mingling_core/src/program/hook.rs
index 630baae..56d8e0e 100644
--- a/mingling_core/src/program/hook.rs
+++ b/mingling_core/src/program/hook.rs
@@ -718,11 +718,11 @@ mod tests {
             unreachable!()
         }
 
-        fn render(_any: crate::AnyOutput<MockHookEnum>, _r: &mut crate::RenderResult) {
+        fn render(_any: crate::AnyOutput<MockHookEnum>) -> crate::RenderResult {
             unreachable!()
         }
 
-        fn render_help(_any: crate::AnyOutput<MockHookEnum>, _r: &mut crate::RenderResult) {
+        fn render_help(_any: crate::AnyOutput<MockHookEnum>) -> crate::RenderResult {
             unreachable!()
         }