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-rw-r--r--third_party/lisp/mime4cl/endec.lisp2
-rw-r--r--third_party/lisp/mime4cl/package.lisp1
-rw-r--r--third_party/lisp/mime4cl/test/endec.lisp21
3 files changed, 22 insertions, 2 deletions
diff --git a/third_party/lisp/mime4cl/endec.lisp b/third_party/lisp/mime4cl/endec.lisp
index d6f5ee5c79c4..2e282c237822 100644
--- a/third_party/lisp/mime4cl/endec.lisp
+++ b/third_party/lisp/mime4cl/endec.lisp
@@ -650,7 +650,7 @@ sequence, a charset string indicating the original coding."
 
 (defun decode-RFC2047 (text)
   "Decode TEXT into a fully decoded string. Whenever a non ASCII part is
-  encountered, try to decode it using babel, otherwise signal an error."
+  encountered, try to decode it using flexi-streams, otherwise signal an error."
   (flet ((decode-part (part)
            (etypecase part
              (cons (flexi-streams:octets-to-string
diff --git a/third_party/lisp/mime4cl/package.lisp b/third_party/lisp/mime4cl/package.lisp
index 3b457410dfd7..94b9e6b39053 100644
--- a/third_party/lisp/mime4cl/package.lisp
+++ b/third_party/lisp/mime4cl/package.lisp
@@ -69,6 +69,7 @@
            #:encode-base64-stream
            #:encode-base64-sequence
            #:parse-RFC2047-text
+           #:decode-RFC2047
            #:parse-RFC822-header
            #:read-RFC822-headers
            #:time-RFC822-string
diff --git a/third_party/lisp/mime4cl/test/endec.lisp b/third_party/lisp/mime4cl/test/endec.lisp
index 07e7abbf9e43..6b22b3f6a287 100644
--- a/third_party/lisp/mime4cl/test/endec.lisp
+++ b/third_party/lisp/mime4cl/test/endec.lisp
@@ -116,7 +116,26 @@ line")
 (deftest RFC2047.1
     (parse-RFC2047-text "foo bar")
   ("foo bar"))
-;; TODO(sterni): more RFC2047 test cases
+
+;; from RFC2047 section 8
+(deftest RFC2047.2
+    (decode-RFC2047 "=?US-ASCII?Q?Keith_Moore?= <moore@cs.utk.edu>")
+  "Keith Moore <moore@cs.utk.edu>")
+
+;; from RFC2047 section 8
+(deftest RFC2047.3
+    (decode-RFC2047 "=?ISO-8859-1?Q?Olle_J=E4rnefors?=")
+  "Olle Järnefors")
+
+;; from RFC2047 section 8
+(deftest RFC2047.4
+    (decode-RFC2047 "Nathaniel Borenstein <nsb@thumper.bellcore.com> (=?iso-8859-8?b?7eXs+SDv4SDp7Oj08A==?=)")
+  "Nathaniel Borenstein <nsb@thumper.bellcore.com> (םולש ןב ילטפנ)")
+
+;; from RFC2047 section 8
+(deftest RFC2047.5
+  (decode-RFC2047 "=?ISO-8859-1?Q?Keld_J=F8rn_Simonsen?= <keld@dkuug.dk>")
+  "Keld Jørn Simonsen <keld@dkuug.dk>")
 
 (defun perftest-encoder (encoder-class &optional (megs 100))
   (declare (optimize (speed 3) (debug 0) (safety 0))