Fix for ANSI color codes that include blank values (#178)

Author: jaysonlarose

ansi2html/converter.py

@@ -454,6 +454,13 @@ def _handle_ansi_code(
                 yield CursorMoveUp()
                 continue
 
+            while True:
+                param_len = len(params)
+                params = params.replace("::", ":")
+                params = params.replace(";;", ";")
+                if len(params) == param_len:
+                    break
+
             try:
                 params = [int(x) for x in re.split("[;:]", params)]
             except ValueError: