It would be very advantageous to add calc the subtraction:
set(myvar,' mystringbla');
set(myvar2,calc(myvar+' bla'));
set(myvar3,calc(myvar2-'bla'));
trace(get(myvar)); >>> mystringbla
trace(get(myvar2)); >>> mystringblabla
trace(get(myvar3)); >>> NaN >>> With a new functionality it would be: mystringbla
Perhaps it will be better to subtract number of characters, for example 6 chars:
set(myvar3,calc(myvar2-6)); >>> It would return mystring
Best Regards,
Fernando