[MACTCL] Tk 8.5.12.x crashes opening IDLE Preferences menu

[Ned D. <na...@ac...>]

Here's another regression with 8.5.12.x.  Using IDLE on OS X from a 
Python that will link with ActiveTcl 8.5, attempting to open IDLE's 
Preferences menu, either with the mouse (IDLE -> Preferences) or with 
the keyboard accelerator (Cmd-`) causes an immediate crash in Tk.  I 
assume what is special here is that IDLE uses the 
::tk::mac::ShowPreferences event (http://wiki.tcl.tk/12987).  The 
problem should be simple to reproduce: install the current ActiveTcl 
8.5.12.1 and any of the python.org 64-bit installers for 2.7.x, 3.2.x, 
and 3.3.0rc1 and then type /usr/local/idle2.7 or /usr/local/idle3.x and 
then type Cmd-`.  The current ActivePython 2.7.2.5 for OS X crashes as 
well (I didn't try the ActivePython 3.2).  Unfortunately, since only the 
most recent ActiveTcl is available to Community Edition users, unless 
you have saved copies of Active 8.5.11.1 or earlier, you are out of luck 
especially on OS X 10.6 where Apple's Tk 8.5 is fatally buggy.   Does 
anyone have a native Tk app that uses ::tk::mac::ShowPreferences that 
reproduces the crash as well?

Here's the initial part of the stack trace:

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   Tk                              0x00000001011c4e6c 
TkpConfigureMenuEntry + 1923
1   Tk                              0x0000000101145ffe MenuWorldChanged 
+ 61
2   Tk                              0x000000010111fa99 RecomputeWidgets 
+ 47
3   Tk                              0x000000010111faa7 RecomputeWidgets 
+ 61
4   Tk                              0x000000010111faa7 RecomputeWidgets 
+ 61
5   Tcl                             0x0000000101091e81 TclServiceIdle + 
76
6   Tcl                             0x0000000101076432 Tcl_DoOneEvent + 
329
7   Tk                              0x0000000101140832 MapFrame + 42
8   Tcl                             0x0000000101091e81 TclServiceIdle + 
76
9   Tcl                             0x0000000101076432 Tcl_DoOneEvent + 
329
10  Tk                              0x0000000101116e26 Tk_TkwaitObjCmd + 
555
11  Tcl                             0x00000001010108ad 
TclEvalObjvInternal + 782
12  Tcl                             0x0000000101011a9f Tcl_EvalObjv + 66
13  _tkinter.so                     0x00000001007068cd Tkapp_Call + 189
14  org.python.python               0x00000001000c1e7d 
PyEval_EvalFrameEx + 25213

-- 
 Ned Deily,
 na...@ac...