From a16afd0bc29ca3a12561d527a4d0fecfc60f568d Mon Sep 17 00:00:00 2001
From: Leon Mika <lmika@lmika.org>
Date: Thu, 12 Dec 2024 08:20:02 +1100
Subject: [PATCH] Actually fixed the panic but reverted back to old working

---
 repl/evaldisplay.go | 30 ++++++++++++++++--------------
 1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/repl/evaldisplay.go b/repl/evaldisplay.go
index f4e72d8..f09254c 100644
--- a/repl/evaldisplay.go
+++ b/repl/evaldisplay.go
@@ -89,23 +89,25 @@ func (r *REPL) displayResult(ctx context.Context, w io.Writer, res any, concise
 			fmt.Fprintf(w, "]")
 		} else {
 			// In the off-chance that this is actually a slice of printables
-			vt := reflect.ValueOf(res).Type()
-			if tp, ok := r.typePrinters[vt]; ok {
-				canDisplay := true
+			if len(v) > 0 {
+				vt := reflect.SliceOf(reflect.TypeOf(v[0]))
+				if tp, ok := r.typePrinters[vt]; ok {
+					canDisplay := true
 
-				typeSlice := reflect.MakeSlice(vt, len(v), len(v))
-				for i := 0; i < len(v); i++ {
-					vv := reflect.ValueOf(v[i])
-					if vv.CanConvert(vt.Elem()) {
-						typeSlice.Index(i).Set(vv)
-					} else {
-						canDisplay = false
-						break
+					typeSlice := reflect.MakeSlice(vt, len(v), len(v))
+					for i := 0; i < len(v); i++ {
+						vv := reflect.ValueOf(v[i])
+						if vv.CanConvert(vt.Elem()) {
+							typeSlice.Index(i).Set(vv)
+						} else {
+							canDisplay = false
+							break
+						}
 					}
-				}
 
-				if canDisplay {
-					return tp(w, typeSlice.Interface(), concise)
+					if canDisplay {
+						return tp(w, typeSlice.Interface(), concise)
+					}
 				}
 			}