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-rw-r--r--CHANGES7
1 files changed, 6 insertions, 1 deletions
diff --git a/CHANGES b/CHANGES
index c352fc13..2305618a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -59,5 +59,10 @@ do not print multiple identical prompts for continued lines.
Beginnings of support PGIP protocol (work in progress with Isabelle
CVS version). Presently allows Isabelle to configure Proof General.
-CURRENTLY SUPPORT FOR CURRENTLY RELEASED ISABELLE VERSIONS IS BROKEN
+CURRENTLY SUPPORT FOR CURRENTLY RELEASED ISABELLE VERSIONS IS BROKEN!
+Backward compatibility may not be maintained: it's simply too much
+effort. This means that if you upgrade your Emacs version, which
+forces you to upgrade Proof General because Emacs upgrades usually
+break Proof General (Emacs authors pay little heed to maintaining
+APIs), then you may have to upgrade your Isabelle version as well.