Revert "Revert "Implement update call when the object is "up to date" gitpython-developers#871""

This reverts commit 3bf002e.

Try again

Author: Sebastian Thiel

git/util.py

@@ -390,6 +390,21 @@ def _parse_progress_line(self, line):
         if len(self.error_lines) > 0 or self._cur_line.startswith(('error:', 'fatal:')):
             self.error_lines.append(self._cur_line)
             return []
+        elif 'up to date' in self._cur_line:
+            # Checking this way instead of startswith, because debugging for
+            # startswith(' = [up to date]') is going to be a major pain if just
+            # a single space or bracket changes.
+
+            # Strip the initial ' = [up to date]' from the line
+            message_string = line.split('date]', 1)[-1]
+
+            # Trim whitespace
+            message_string = ' '.join(message_string.split())
+
+            self.update(0,
+                        1,
+                        1,
+                        message_string)
 
         sub_lines = line.split('\r')
         failed_lines = []