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-rw-r--r--generic/pg-vars.el10
1 files changed, 9 insertions, 1 deletions
diff --git a/generic/pg-vars.el b/generic/pg-vars.el
index 1bf31ffa..e86fde61 100644
--- a/generic/pg-vars.el
+++ b/generic/pg-vars.el
@@ -83,7 +83,15 @@ has been set.")
(defvar proof-shell-busy nil
"A lock indicating that the proof shell is processing.
When this is non-nil, `proof-shell-ready-prover' will give
-an error.")
+an error.
+
+When processing commands from a buffer for script management,
+this will be set to either 'advancing or 'retracting to indicate
+the direction of movement.")
+
+(defvar proof-shell-last-queuemode nil
+ "Flag indicating last direction of proof queue.
+This is actually the last non-nil value of `proof-shell-busy'.")
(defvar proof-included-files-list nil
"List of files currently included in proof process.