From 86cf98a8a179e0751124c9a14c307c41b1e57422 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Sat, 13 Nov 2021 14:35:49 +0100
Subject: add basic decoding

---
 collect-tos-for-alpine-addressbook | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/collect-tos-for-alpine-addressbook b/collect-tos-for-alpine-addressbook
index aed5522..a2766ca 100755
--- a/collect-tos-for-alpine-addressbook
+++ b/collect-tos-for-alpine-addressbook
@@ -1,5 +1,32 @@
 #!/bin/bash
 
+decode() {
+  sed '
+    :a
+      s/=?\(ISO-8859-15\?\|windows-1252\|UTF-8\)?Q?\([^=_]*\)?=/\2/
+      s/\(=?\(ISO-8859-15\?\|windows-1252\)?Q?[^=]*\)_/\1 /
+      s/\(=?\(ISO-8859-15\?\|windows-1252\)?Q?[^=]*\)=E4/\1ä/
+      s/\(=?\(ISO-8859-15\?\|windows-1252\)?Q?[^=]*\)=E9/\1é/
+      s/\(=?\(ISO-8859-15\?\|windows-1252\)?Q?[^=]*\)=F6/\1ö/
+      s/\(=?\(ISO-8859-15\?\|windows-1252\)?Q?[^=]*\)=F8/\1ř/
+      s/\(=?\(ISO-8859-15\?\|windows-1252\)?Q?[^=]*\)=FC/\1ü/
+      s/\(=?\(ISO-8859-15\?\|windows-1252\)?Q?[^=]*\)=FD/\1ý/
+      s/\(=?\(ISO-8859-15\?\|windows-1252\)?Q?[^=]*\)=DF/\1ß/
+      s/\(=?\(ISO-8859-15\?\|windows-1252\)?Q?[^=]*\)=22/\1"/
+      s/\(=?\(ISO-8859-15\?\|windows-1252\)?Q?[^=]*\)=2C/\1,/
+      s/\(=?\(ISO-8859-15\?\|windows-1252\)?Q?[^=]*\)=2E/\1,/
+      s/\(=?UTF-8?Q?[^=]*\)_/\1 /
+      s/\(=?UTF-8?Q?[^=]*\)=c3=a4/\1ä/
+      s/\(=?UTF-8?Q?[^=]*\)=c3=b6/\1ö/
+      s/\(=?UTF-8?Q?[^=]*\)=c3=bc/\1ü/
+      s/\(=?UTF-8?Q?[^=]*\)=c3=9f/\1ß/
+      s/\(=?UTF-8?Q?[^=]*\)=c3=98/\1ø/
+      s/\(=?UTF-8?Q?[^=]*\)=22/\1"/
+      s/\(=?UTF-8?Q?[^=]*\)=2c/\1,/
+      ta
+  '
+}
+
 sed '
   :a
     N
@@ -35,7 +62,8 @@ done \
     "$(
       printf '%s\n' "${comment}" \
       | base64 -d \
-      | sed 's@^\(["'"'"']\)\(.*\)\1@\2@'
+      | sed 's@^\(["'"'"']\)\(.*\)\1@\2@' \
+      | decode
     )" \
     "${email}"
 done
-- 
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