bj_wantDestroyGroup is a Boolean global variable, not a function (so it's not a Blizzard JASS function aka BJ). Booleans
cannot leak, whether they be global or local variables.
You can see
bj_wantDestroyGroup referenced inside of Group functions such as this one:
vJASS:
function IsUnitGroupEmptyBJ takes group g returns boolean
// If the user wants the group destroyed, remember that fact and clear
// the flag, in case it is used again in the callback.
local boolean wantDestroy = bj_wantDestroyGroup
set bj_wantDestroyGroup = false
set bj_isUnitGroupEmptyResult = true
call ForGroup(g, function IsUnitGroupEmptyBJEnum)
// If the user wants the group destroyed, do so now.
if (wantDestroy) then
call DestroyGroup(g)
endif
return bj_isUnitGroupEmptyResult
endfunction
This function, IsUnitGroupEmptyBJ, is what's called when you use this Condition in GUI:
-
Conditions
-
(SomeUnitGroup is empty) Equal to True
So the
IsUnitGroupEmptyBJ function references
bj_wantDestroyGroup, which will either be equal to
True or
False.
You have the option to manually set
bj_wantDestroyGroup to
True or
False before calling this function to control whether or not the Unit Group is destroyed after it's done being used.
True = Destroy,
False = Don't destroy.
You've been taking advantage of this by setting
bj_wantDestroyGroup to
True before using the Pick every unit function (this function creates a Unit Group as well), which tells the Pick every unit function to destroy the Unit Group that it creates after it's done using it.
You can also see that
bj_wantDestroyGroup is set to
False inside of the functions that reference it. That's the reason why you need to set it to
True each time you want to Destroy a Group, since it will be set back to
False afterwards.
