From d28419594e2a3c457708c74cedbdcc14a2e229d5 Mon Sep 17 00:00:00 2001
From: Daniel Selsam <daniel.selsam@protonmail.com>
Date: Thu, 29 Jul 2021 15:36:18 -0700
Subject: [PATCH] fix: pp.analyze do not panic on bvar

---
 src/Lean/PrettyPrinter/Delaborator/TopDownAnalyze.lean | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Lean/PrettyPrinter/Delaborator/TopDownAnalyze.lean b/src/Lean/PrettyPrinter/Delaborator/TopDownAnalyze.lean
index a4621ce42f..10e6828547 100644
--- a/src/Lean/PrettyPrinter/Delaborator/TopDownAnalyze.lean
+++ b/src/Lean/PrettyPrinter/Delaborator/TopDownAnalyze.lean
@@ -318,7 +318,7 @@ partial def analyze (parentIsApp : Bool := false) : AnalyzeM Unit := do
     | Expr.letE ..    => analyzeLet
     | Expr.lit ..     => pure ()
     | Expr.mvar ..    => pure ()
-    | Expr.bvar ..    => unreachable!
+    | Expr.bvar ..    => pure ()
 where
   analyzeApp := do
     let needsType := !(← read).knowsType && !(← okBottomUp? (← getExpr)).isSafe