Symbol Exec doesn't update procName() or procFile()

[Hovestar]

Running this code:

function fun1()
   (@fun2()):exec() // line 54
return nil
function fun2()
   ~ procname()
   ~ procfile()
   ~ procline() // actaully on line 59
   ~ callstack(0,.t.)
return nil

gives the following results:

EXEC

59

It looks like procline() gets updated when calling exec, but procfile() and procname() are not updated.