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-rw-r--r--test/README.md3
1 files changed, 3 insertions, 0 deletions
diff --git a/test/README.md b/test/README.md
index 010a2c9c12..6ad70e2f45 100644
--- a/test/README.md
+++ b/test/README.md
@@ -341,3 +341,6 @@ disables tracing (the fastest, but you get no data if tests crash and there was
no core dump generated), `1` or empty/undefined leaves only C function cals and
returns in the trace (faster then recording everything), `2` records all
function calls, returns and lua source lines exuecuted.
+
+`NVIM_TEST_TRACE_ON_ERROR` (U) (1): makes unit tests yield trace on error in
+addition to regular error message.