From aa0c246f6426e3931ac323f35c11a91188d60cc0 Mon Sep 17 00:00:00 2001
From: Ethan Frey <ethanfrey@users.noreply.github.com>
Date: Thu, 29 Jun 2017 20:43:39 +0200
Subject: [PATCH] tmerror now dumps stack trace on %+v as well

---
 errors/main.go     | 13 +++++++++++++
 stack/signature.go |  6 ------
 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/errors/main.go b/errors/main.go
index 07239b600a..a4cb8a483c 100644
--- a/errors/main.go
+++ b/errors/main.go
@@ -5,6 +5,8 @@ package errors
 **/
 
 import (
+	"fmt"
+
 	"github.com/pkg/errors"
 
 	abci "github.com/tendermint/abci/types"
@@ -37,6 +39,17 @@ func (t tmerror) Message() string {
 	return t.msg
 }
 
+// Format handles "%+v" to expose the full stack trace
+// concept from pkg/errors
+func (t tmerror) Format(s fmt.State, verb rune) {
+	// special case also show all info
+	if verb == 'v' && s.Flag('+') {
+		fmt.Fprintf(s, "%+v\n", t.stackTracer)
+	}
+	// always print the normal error
+	fmt.Fprintf(s, "(%d) %s\n", t.code, t.msg)
+}
+
 // Result converts any error into a abci.Result, preserving as much info
 // as possible if it was already a TMError
 func Result(err error) abci.Result {
diff --git a/stack/signature.go b/stack/signature.go
index ca2402394b..13846e516a 100644
--- a/stack/signature.go
+++ b/stack/signature.go
@@ -1,8 +1,6 @@
 package stack
 
 import (
-	"fmt"
-
 	crypto "github.com/tendermint/go-crypto"
 
 	"github.com/tendermint/basecoin"
@@ -53,9 +51,7 @@ func (h Signatures) DeliverTx(ctx basecoin.Context, store types.KVStore, tx base
 
 func addSigners(ctx basecoin.Context, sigs []crypto.PubKey) basecoin.Context {
 	perms := make([]basecoin.Actor, len(sigs))
-	fmt.Printf("Add %d signers\n", len(sigs))
 	for i, s := range sigs {
-		fmt.Printf("Add %X\n", s.Address())
 		perms[i] = SigPerm(s.Address())
 	}
 	// add the signers to the context and continue
@@ -63,10 +59,8 @@ func addSigners(ctx basecoin.Context, sigs []crypto.PubKey) basecoin.Context {
 }
 
 func getSigners(tx basecoin.Tx) ([]crypto.PubKey, basecoin.Tx, error) {
-	fmt.Println("getSigners")
 	stx, ok := tx.Unwrap().(Signed)
 	if !ok {
-		fmt.Printf("Not okay: %#v\n", tx)
 		return nil, basecoin.Tx{}, errors.Unauthorized()
 	}
 	sig, err := stx.Signers()