From 172855a8e911bab6eb51d0cf321db2db6ae14313 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20Obernd=C3=B6rfer?= <toberndo@yarkon.de>
Date: Fri, 16 May 2014 19:08:29 +0200
Subject: [PATCH] Redefine Regex for blank line after armor header. This fixes
 an issue with truncated blank lines at the beginning of cleartext signed
 messages.

---
 src/encoding/armor.js | 3 ++-
 test/general/armor.js | 8 +++++++-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/encoding/armor.js b/src/encoding/armor.js
index 476b04bb..13ea2d0a 100644
--- a/src/encoding/armor.js
+++ b/src/encoding/armor.js
@@ -211,7 +211,8 @@ function createcrc24(input) {
  * and an attribute "body" containing the body.
  */
 function splitHeaders(text) {
-  var reEmptyLine = /^\s*\n/m;
+  // empty line with whitespace characters
+  var reEmptyLine = /^[ \f\r\t\u00a0\u2000-\u200a\u202f\u205f\u3000]*\n/m;
   var headers = '';
   var body = text;
 
diff --git a/test/general/armor.js b/test/general/armor.js
index e45a9d88..205766eb 100644
--- a/test/general/armor.js
+++ b/test/general/armor.js
@@ -84,7 +84,7 @@ describe("ASCII armor", function() {
     var msg =
       ['-----BEGIN PGP SIGNED MESSAGE-----',
       'Hash: SHA1',
-      '\u000b\u00a0',
+      ' \f\r\t\u00a0\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000',
       'sign this',
       '-----BEGIN PGP SIGNATURE-----',
       'Version: GnuPG v2.0.22 (GNU/Linux)',
@@ -183,6 +183,12 @@ describe("ASCII armor", function() {
     expect(result.keys[0]).to.be.an.instanceof(openpgp.key.Key);
   });
 
+  it('Do not filter blank lines after header', function () {
+    var msg = getArmor(['Hash: SHA1', '']);
+    msg = openpgp.cleartext.readArmored(msg);
+    expect(msg.text).to.equal('\r\nsign this');
+  });
+
 });