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-rw-r--r--doc/whatsnew5x.rst5
1 files changed, 5 insertions, 0 deletions
diff --git a/doc/whatsnew5x.rst b/doc/whatsnew5x.rst
index c805b8d7..4724dee7 100644
--- a/doc/whatsnew5x.rst
+++ b/doc/whatsnew5x.rst
@@ -33,6 +33,11 @@ Backward Incompatibilities
circumstances, you may need to use ``parallel=true`` to avoid multiple
processes overwriting each others' data.
+- When constructing a :class:`coverage.Coverage` object, `data_file` can be
+ specified as None to prevent writing any data file at all. In previous
+ versions, an explicit `data_file=None` argument would use the default of
+ ".coverage". Fixes :github:`871`.
+
- The ``[run] note`` setting has been deprecated. Using it will result in a
warning, and the note will not be written to the data file. The
corresponding :class:`.CoverageData` methods have been removed.