quick and easy fix for #51

Author: ikirudennis

tests/test_github_issues.py

@@ -183,3 +183,10 @@ def test_github_issue_50():
               'final List<List<String>> multipleList = new '
               'ArrayList&lt;&gt;();</pre>')
     assert result == expect
+
+def test_github_issue_51():
+    """Link build with $ sign without "http" prefix broken."""
+    test = '"$":www.google.com.br'
+    result = textile.textile(test)
+    expect = '\t<p><a href="www.google.com.br">www.google.com.br</a></p>'
+    assert result == expect

textile/core.py

@@ -920,7 +920,7 @@ def _casesdefault(c, pop, popped, url_chars, counts, pre):
             text = url
             if "://" in text:
                 text = text.split("://")[1]
-            else:
+            elif ":" in text:
                 text = text.split(":")[1]
 
         text = text.strip()