Branch coverage

excitertools.py

@@ -3827,11 +3827,10 @@ def send_also(self, collector: Generator) -> "Iter":
         """
         Reference: `more_itertools.consumer <https://more-itertools.readthedocs.io/en/stable/api.html?highlight=numeric_range#more_itertools.consumer>`_
 
-        Some ideas around a reverse iterator as a sink. The requirement to
-        first "next" a just-started generator before you can send values
-        into it is irritating, but not insurmountable. This method will
-        automatically detect the "just-started generator" situation, do the
-        ``next()``, and then send in the first value as necessary.
+        Some ideas around a reverse iterator as a sink. Usually you have
+        first to "send" a ``None`` into a generator if you want to send
+        more values into it (or call ``next()`` on it), but we handle 
+        that automatically.
 
         Simple case:
 
@@ -3846,6 +3845,22 @@ def send_also(self, collector: Generator) -> "Iter":
             >>> output
             [0, 1, 2]
 
+        However, if the caller already started the generator, that 
+        works too:
+
+        .. code-block:: python
+
+            >>> output = []
+            >>> def collector():
+            ...     while True:
+            ...         output.append((yield))
+            >>> g = collector()
+            >>> next(g)  # This "starts" the generator
+            >>> Iter.range(3).send_also(g).collect()
+            [0, 1, 2]
+            >>> output
+            [0, 1, 2]
+
         If the generator is closed before the iteration is complete,
         you'll get an exception (Python 3.7+):