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-rw-r--r--isa/x-symbol-isa.el4
1 files changed, 2 insertions, 2 deletions
diff --git a/isa/x-symbol-isa.el b/isa/x-symbol-isa.el
index d1ff4cb7..71dcb41e 100644
--- a/isa/x-symbol-isa.el
+++ b/isa/x-symbol-isa.el
@@ -12,9 +12,9 @@
(setq proof-xsym-extra-modes '(thy-mode)
proof-xsym-activate-command
- "print_mode := ([\"xsymbols\", \"symbols\"] @ ! print_mode);"
+ "change print_mode (insert (op =) \"xsymbols\")"
proof-xsym-deactivate-command
- "print_mode := (! print_mode \\\\ [\"xsymbols\", \"symbols\"]);")
+ "change print_mode (remove (op =) \"xsymbols\")")