[smuxi: 162/179] Engine(-Tests): fix Bitcoin message pattern regex

[Mirco M. M. Bauer <mmmbauer src gnome org>]

commit 253fc27c292c98ce02f873fbf8aa5da90767a2e1
Author: Mirco Bauer <meebey meebey net>
Date:   Tue Jun 20 23:02:45 2017 +0800

    Engine(-Tests): fix Bitcoin message pattern regex
    
    The regular expression for matching Bitcoin transaction hashes is matching
    parts of a SHA1 hash and Ethereum address as false-positive. The regex is now
    including the new delimiter feature that only matches a word, but not within
    a word.

 src/Engine-Tests/MessageBuilderTests.cs     |   16 ++++++++++++++++
 src/Engine/Config/MessageBuilderSettings.cs |   11 ++++++++++-
 2 files changed, 26 insertions(+), 1 deletions(-)
---
diff --git a/src/Engine-Tests/MessageBuilderTests.cs b/src/Engine-Tests/MessageBuilderTests.cs
index 5d3d847..432537e 100644
--- a/src/Engine-Tests/MessageBuilderTests.cs
+++ b/src/Engine-Tests/MessageBuilderTests.cs
@@ -754,6 +754,22 @@ namespace Smuxi.Engine
         }
 
         [Test]
+        public void AppendMessageWithNonBitcoinTxHash()
+        {
+            var msg = "11:45:54 <matt> I so I send to 0x2880502fc7373e73cc19f3e8dd1cd71ca75ad826, correct?";
+            var builder = new MessageBuilder();
+            builder.TimeStamp = DateTime.MinValue;
+            builder.Append(new TextMessagePartModel(msg));
+            TestMessage(msg, builder.ToMessage());
+
+            msg = "19:15:50 <meebey> b7ae3f09f4f1ef58a6bc479541523a7428ab5d30  ../../lib/emoji.json";
+            builder = new MessageBuilder();
+            builder.TimeStamp = DateTime.MinValue;
+            builder.Append(new TextMessagePartModel(msg));
+            TestMessage(msg, builder.ToMessage());
+        }
+
+        [Test]
         public void AppendMessageWithEmojis()
         {
             var msg = "foo :smiley: bar";
diff --git a/src/Engine/Config/MessageBuilderSettings.cs b/src/Engine/Config/MessageBuilderSettings.cs
index 06e6b44..b5955f8 100644
--- a/src/Engine/Config/MessageBuilderSettings.cs
+++ b/src/Engine/Config/MessageBuilderSettings.cs
@@ -149,7 +149,16 @@ namespace Smuxi.Engine
             var query = @"(\?[" + path_chars + @"]+)?";
             var bitcoin_address_query = bitcoin_address + query;
             regex = new Regex(
-                @"(?:bitcoin:)?(" + bitcoin_address_query + @")",
+                @"bitcoin:(" + bitcoin_address_query + @")",
+                RegexOptions.IgnoreCase | RegexOptions.Compiled
+            );
+            BuiltinPatterns.Add(new MessagePatternModel(regex) {
+                LinkFormat = "bitcoin:{1}"
+            });
+
+            // bitcoin address (heuristical)
+            regex = new Regex(
+                start_delimiter + @"(" + bitcoin_address_query + @")" + end_delimiter,
                 RegexOptions.IgnoreCase | RegexOptions.Compiled
             );
             BuiltinPatterns.Add(new MessagePatternModel(regex) {