From 5701b6e94968e6e84dd0c197eaf1dd8eb757da7b Mon Sep 17 00:00:00 2001
From: Drew DeVault <sir@cmpwn.com>
Date: Thu, 16 May 2019 14:09:57 -0400
Subject: [PATCH] Decode email when reading it for quoting

---
 commands/account/reply.go | 27 +++++++++++++++++++++++++--
 widgets/compose.go        |  1 +
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/commands/account/reply.go b/commands/account/reply.go
index 84e7614..211af75 100644
--- a/commands/account/reply.go
+++ b/commands/account/reply.go
@@ -7,8 +7,11 @@ import (
 	"io"
 	"strings"
 
-	"git.sr.ht/~sircmpwn/getopt"
+	"github.com/emersion/go-message"
+	_ "github.com/emersion/go-message/charset"
+	"github.com/emersion/go-message/mail"
 	"github.com/emersion/go-imap"
+	"git.sr.ht/~sircmpwn/getopt"
 
 	"git.sr.ht/~sircmpwn/aerc2/widgets"
 )
@@ -106,8 +109,28 @@ func Reply(aerc *widgets.Aerc, args []string) error {
 	if quote {
 		// TODO: something more intelligent than fetching the 0th part
 		store.FetchBodyPart(msg.Uid, 0, func(reader io.Reader) {
+			header := message.Header{}
+			header.SetText(
+				"Content-Transfer-Encoding", msg.BodyStructure.Encoding)
+			header.SetContentType(
+				msg.BodyStructure.MIMEType, msg.BodyStructure.Params)
+			header.SetText("Content-Description", msg.BodyStructure.Description)
+			entity, err := message.New(header, reader)
+			if err != nil {
+				// TODO: Do something with the error
+				addTab()
+				return
+			}
+			mreader := mail.NewReader(entity)
+			part, err := mreader.NextPart()
+			if err != nil {
+				// TODO: Do something with the error
+				addTab()
+				return
+			}
+
 			pipeout, pipein := io.Pipe()
-			scanner := bufio.NewScanner(reader)
+			scanner := bufio.NewScanner(part.Body)
 			go composer.SetContents(pipeout)
 			// TODO: Let user customize the date format used here
 			io.WriteString(pipein, fmt.Sprintf("On %s %s wrote:\n",
diff --git a/widgets/compose.go b/widgets/compose.go
index 14dfaaa..18fe38c 100644
--- a/widgets/compose.go
+++ b/widgets/compose.go
@@ -129,6 +129,7 @@ func (c *Composer) Defaults(defaults map[string]string) *Composer {
 func (c *Composer) SetContents(reader io.Reader) *Composer {
 	c.email.Seek(0, os.SEEK_SET)
 	io.Copy(c.email, reader)
+	c.email.Sync()
 	c.email.Seek(0, os.SEEK_SET)
 	return c
 }