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-rw-r--r--pod/perlvar.pod2
1 files changed, 2 insertions, 0 deletions
diff --git a/pod/perlvar.pod b/pod/perlvar.pod
index 33c68a023a..24db2956ae 100644
--- a/pod/perlvar.pod
+++ b/pod/perlvar.pod
@@ -1148,6 +1148,8 @@ and is thereafter read-only.
=item ${^UTF8CACHE}
This variable controls the state of the internal UTF-8 offset caching code.
+1 for on (the default), 0 for off, -1 to debug the caching code by checking
+all its results against linear scans, and panicking on any discrepancy.
=item ${^UTF8LOCALE}