some attempts to avoid sandwiching of actions stemming from single ESCAPE key event, to avoid potential conflict with ongoing text selection;
src/Tools/Code
src/Tools/jEdit
src/Tools/Graphview
src/Tools/WWW_Find
src/HOL/Mirabelle
src/HOL/Mutabelle
src/HOL/Library/Sum_of_Squares
src/HOL/Tools/ATP
src/HOL/Tools/Predicate_Compile
src/HOL/Tools/Sledgehammer/MaSh
src/HOL/Tools/SMT
src/HOL/TPTP