diff -r fb20489acf39 -r 3fb8ad4d27b1 src/basics.h
--- a/src/basics.h	Thu May 10 15:54:26 2018 +0300
+++ b/src/basics.h	Sat May 26 17:28:15 2018 +0300
@@ -100,3 +100,4 @@
 QString superscript(int number);
 QString subscript(int number);
 QString fractionRep(int numerator, int denominator);
+void withSignalsBlocked(QObject* object, std::function<void()> function);