From ae688fd185c90ceba7a5bc28c1704e42c69f5306 Mon Sep 17 00:00:00 2001
From: Arun Isaac
Date: Fri, 14 Sep 2018 20:53:04 +0530
Subject: quoted-printable: Encode #\= with its ASCII code.

* email/quoted-printable.scm (quoted-printable-encode): Encode #\=
with its ASCII code.
* test/quoted-printable.scm (quoted-printable-encoding of =): Add test
to check for this bug.
---
 tests/quoted-printable.scm | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'tests/quoted-printable.scm')

diff --git a/tests/quoted-printable.scm b/tests/quoted-printable.scm
index 608a937..f3dd5eb 100755
--- a/tests/quoted-printable.scm
+++ b/tests/quoted-printable.scm
@@ -49,6 +49,12 @@ abriquent pour te la vendre une =C3=A2me vulgaire.")
                           (string->bytevector decoded-text charset))
                          #\newline))))
 
+(test-equal "quoted-printable encoding of ="
+  (quoted-printable-encode
+   (string->bytevector "=" "UTF-8"))
+  (string-append "=" (string-upcase (number->string
+                                     (char->integer #\=) 16))))
+
 (let ((encoded-text "=A1Hola,_se=F1or!")
       (decoded-text "¡Hola, señor!")
       (charset "ISO-8859-1"))
-- 
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