Merge #7491

7491: Simplify mbe match error. r=edwin0cheng a=edwin0cheng

Handle parse error in rule parsing instead of matching in mbe.

bors r+

Co-authored-by: Edwin Cheng <[email protected]>

1 files changed, 0 insertions, 7 deletions

diff --git a/crates/mbe/src/expander/transcriber.rs b/crates/mbe/src/expander/transcriber.rs
index 82bace110..30c090f32 100644
--- a/crates/mbe/src/expander/transcriber.rs
+++ b/crates/mbe/src/expander/transcriber.rs
@@ -86,13 +86,6 @@ fn expand_subtree(
     let start_elements = arena.len();
     let mut err = None;
     for op in template.iter() {
-        let op = match op {
-            Ok(op) => op,
-            Err(e) => {
-                err = Some(e.clone());
-                break;
-            }
-        };
         match op {
             Op::Leaf(tt) => arena.push(tt.clone().into()),
             Op::Subtree(tt) => {