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-rw-r--r--generic/proof-config.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/generic/proof-config.el b/generic/proof-config.el
index 83b850bf..73e11093 100644
--- a/generic/proof-config.el
+++ b/generic/proof-config.el
@@ -533,7 +533,7 @@ mere warning messages with this regexp)."
:type 'regexp
:group 'proof-shell)
-(defvar pbp-hyp-command nil
+(defcustom pbp-hyp-command nil
"Command informing the prover that `pbp-button-action' has been
requested on an assumption."
:type 'regexp