From 23fcabf687eb40d1ccad2a9ff30e65903928ebf6 Mon Sep 17 00:00:00 2001
From: Michael Boulton <michael.boulton@forgerock.com>
Date: Fri, 14 Aug 2020 15:51:43 +0100
Subject: [PATCH] Make it possible to use a git2go error as a return value from
 a signing callback and have it propagate

---
 rebase.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/rebase.go b/rebase.go
index 6e45ccd..7186b7f 100644
--- a/rebase.go
+++ b/rebase.go
@@ -86,6 +86,9 @@ func commitSignCallback(_signature *C.git_buf, _signature_field *C.git_buf, _com
 
 	signature, signatureField, err := opts.SigningCallback(commitContent)
 	if err != nil {
+		if gitError, ok := err.(*GitError); ok {
+			return C.int(gitError.Code)
+		}
 		return C.int(-1)
 	}