This double-evaluation bug has existed since MC v4.2 (the earliest engine I
have immediately to hand).
[snip]
on mouseUp
put "1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16" into myVar
repeat 1000
add zero to any item of myVar
end repeat
put myVar
end mouseUp
[/snip]
Hugh Senior
FLCo