Write debug info after initting for start.

A few important and confusing things are only created in
_init_for_start, and without resetting the write-debug-info flag, we
never see them in the debug output.  This makes the info appear more
than once, but at least we get what we need.

1 files changed, 7 insertions, 4 deletions

diff --git a/coverage/control.py b/coverage/control.py
index 889ef55c..3a0b0107 100644
--- a/coverage/control.py
+++ b/coverage/control.py
@@ -224,8 +224,8 @@ class Coverage(object):
         self._inited_for_start = False
         # Have we started collecting and not stopped it?
         self._started = False
-        # Have we written --debug output?
-        self._wrote_debug = False
+        # Should we write the debug output?
+        self._should_write_debug = True
 
         # If we have sub-process measurement happening automatically, then we
         # want any explicit creation of a Coverage object to mean, this process
@@ -277,8 +277,8 @@ class Coverage(object):
 
     def _post_init(self):
         """Stuff to do after everything is initialized."""
-        if not self._wrote_debug:
-            self._wrote_debug = True
+        if self._should_write_debug:
+            self._should_write_debug = False
             self._write_startup_debug()
 
         # '[run] _crash' will raise an exception if the value is close by in
@@ -481,6 +481,9 @@ class Coverage(object):
         self._inorout.plugins = self._plugins
         self._inorout.disp_class = self._collector.file_disposition_class
 
+        # It's useful to write debug info after initing for start.
+        self._should_write_debug = True
+
         atexit.register(self._atexit)
 
     def _init_data(self, suffix):