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-rw-r--r--NEWS9
1 files changed, 9 insertions, 0 deletions
diff --git a/NEWS b/NEWS
index fc80a4c18..91e757b19 100644
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+++ b/NEWS
@@ -109,6 +109,15 @@ Example:
* Changes to Scheme functions and syntax
+** `port-for-each' makes an additional guarantee.
+
+From the docstring: @var{proc} is applied exactly once to every port
+that exists in the system at the time @var{port-for-each} is invoked.
+Changes to the port table while @var{port-for-each} is running have no
+effect as far as @var{port-for-each} is concerned.
+
+This guarantee is important to make (ice-9 popen) work reliable.
+
** The semantics of guardians have changed.
The changes are for the most part compatible. An important criterion