perldelta for #101666, regexp error error

diff --git a/pod/perldelta.pod b/pod/perldelta.pod
index 7a2cfa3..64c301c 100644 (file)
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -182,7 +182,10 @@ XXX Newly added diagnostic messages go here
 
 =item *
 
-L<message|perldiag/"message">
+L<Group name must start with a non-digit word character in regex; marked by <-- HERE in m/%s/|perldiag/"Group name must start with a non-digit word character in regex; marked by <-- HERE in m/%s/">
+
+This error has been added for C<(?&0)>, which is invalid.  It used to
+produce an incomprehensible error message [perl #101666].
 
 =back