Added a 'coverage debug' command to get internal information for diagnosing problems. Also, all commands should at least take -h.

1 files changed, 4 insertions, 0 deletions

diff --git a/coverage/collector.py b/coverage/collector.py
index a121193d..3b56d241 100644
--- a/coverage/collector.py
+++ b/coverage/collector.py
@@ -118,6 +118,10 @@ class Collector:
             # trace function.
             self._trace_class = Tracer or PyTracer
 
+    def tracer_name(self):
+        """Return the class name of the tracer we're using."""
+        return self._trace_class.__name__
+
     def reset(self):
         """Clear collected data, and prepare to collect more."""
         # A dictionary with an entry for (Python source file name, line number