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-rw-r--r--generic/proof-config.el13
1 files changed, 11 insertions, 2 deletions
diff --git a/generic/proof-config.el b/generic/proof-config.el
index 1a45335c..a16de104 100644
--- a/generic/proof-config.el
+++ b/generic/proof-config.el
@@ -122,8 +122,17 @@ buffer modes)."
:type 'boolean
:group 'proof-user-options)
-(defcustom proof-strict-state-preserving
- t
+(defcustom proof-trace-output-fontify-enable t ;; testing
+ (not (and proof-running-on-XEmacs (>= emacs-major-version 21)))
+ "*Whether to fontify output from the proof assistant during tracing.
+If non-nil and proof-output-fontify-enable is also non-nil,
+output from the proof assistant will be highlighted in the trace buffer.
+This is not recommended in XEmacs 21, since the font-lock parser
+is easily overloaded by large tracing output."
+ :type 'boolean
+ :group 'proof-user-options)
+
+(defcustom proof-strict-state-preserving t
"*Whether Proof General is strict about the state preserving test.
Proof General lets the user send arbitrary commands to the proof
engine with `proof-minibuffer-cmd'. To attempt to preserve