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-rw-r--r--Help/prop_test/TIMEOUT_AFTER_MATCH.rst4
1 files changed, 3 insertions, 1 deletions
diff --git a/Help/prop_test/TIMEOUT_AFTER_MATCH.rst b/Help/prop_test/TIMEOUT_AFTER_MATCH.rst
index a191a9c..d607992 100644
--- a/Help/prop_test/TIMEOUT_AFTER_MATCH.rst
+++ b/Help/prop_test/TIMEOUT_AFTER_MATCH.rst
@@ -22,7 +22,9 @@ When the test outputs a line that matches ``regex`` its start time is
reset to the current time and its timeout duration is changed to
``seconds``. Prior to this, the timeout duration is determined by the
:prop_test:`TIMEOUT` property or the :variable:`CTEST_TEST_TIMEOUT`
-variable if either of these are set.
+variable if either of these are set. Because the test's start time is
+reset, its execution time will not include any time that was spent
+waiting for the matching output.
:prop_test:`TIMEOUT_AFTER_MATCH` is useful for avoiding spurious
timeouts when your test must wait for some system resource to become