Debugger bug in debugging a bug

Whilst looking at the previously mentioned problem in uploading to squeaksource I had a bug in the debugger.

I've just a moment ago updated to #17785 so there are recent changes to some compiler/debugger stuff potentially involved

In DebuggerMethodMapForClosureCompiledMethods>>#privateTempRefsForContext:startKeysToBlockExtents: the startKeysToTempRefs dictionary was nil and thus many varieties of heck[1] broke loose.

 '
6 March 2018 1:31:36.766426 pm

VM: unix - Smalltalk
Image: Squeak6.0alpha [latest update: #17785]

SecurityManager state:
Restricted: false
FileAccess: true
SocketAccess: true
Working Dir /home/pi/Squeak
Trusted Dir /home/pi/Squeak/secure
Untrusted Dir /home/pi/Squeak/My Squeak

UndefinedObject(Object)>>doesNotUnderstand: #at:ifAbsentPut:
        Receiver: nil
        Arguments and temporary variables:
                aMessage: at: 57 ifAbsentPut: [closure] in DebuggerMethodMapForClosureCompiledMethods...etc...
                exception: MessageNotUnderstood: UndefinedObject>>at:ifAbsentPut:
                resumeValue: nil
        Receiver''s instance variables:
nil

DebuggerMethodMapForClosureCompiledMethods>>privateTempRefsForContext:startKeysToBlockExtents:
        Receiver: a DebuggerMethodMapForClosureCompiledMethods
        Arguments and temporary variables:
                aContext: WebClient>>httpPut:content:type:do:
                theContextsStartKeysToBlockExtents: a Dictionary(57->(0 to: 2) )
        Receiver''s instance variables:
                timestamp: 3692875391
                methodReference: a WeakArray((WebClient>>#httpPut:content:type:do: "a CompiledMethod...etc...
                methodNode: httpPut: urlString content: postData type: contentType do: aBlock
...etc...
                abstractSourceRanges: a Dictionary(3->(120 to: 147) 7->(167 to: 191) 8->(159 to...etc...
                sortedSourceMap: nil
                blockExtentsToTempRefs: a Dictionary((0 to: 2)->#(#(''urlString'' 1) #(''postData''...etc...
                startpcsToTempRefs: a Dictionary(57->#(#(''urlString'' 1) #(''postData'' 2) #(''cont...etc...
                startKeysToTempRefs: nil

DebuggerMethodMapForClosureCompiledMethods>>tempNamesForContext:
        Receiver: a DebuggerMethodMapForClosureCompiledMethods
        Arguments and temporary variables:
                aContext: WebClient>>httpPut:content:type:do:
        Receiver''s instance variables:
                timestamp: 3692875391
                methodReference: a WeakArray((WebClient>>#httpPut:content:type:do: "a CompiledMethod...etc...
                methodNode: httpPut: urlString content: postData type: contentType do: aBlock
...etc...
                abstractSourceRanges: a Dictionary(3->(120 to: 147) 7->(167 to: 191) 8->(159 to...etc...
                sortedSourceMap: nil
                blockExtentsToTempRefs: a Dictionary((0 to: 2)->#(#(''urlString'' 1) #(''postData''...etc...
                startpcsToTempRefs: a Dictionary(57->#(#(''urlString'' 1) #(''postData'' 2) #(''cont...etc...
                startKeysToTempRefs: nil

Context>>tempNames
        Receiver: WebClient>>httpPut:content:type:do:
        Arguments and temporary variables:

        Receiver''s instance variables:
                sender: nil
                pc: nil
                stackp: 5
                method: (WebClient>>#httpPut:content:type:do: "a CompiledMethod(1024334)")
                closureOrNil: nil
                receiver: WebClient(http://source.squeak.org)

ContextVariablesInspector>>fieldList
        Receiver: a ContextVariablesInspector
        Arguments and temporary variables:

        Receiver''s instance variables:
                dependents: nil
                contents: ''''
                object: WebClient>>sendRequest:contentBlock:
                selectionIndex: 0
                timeOfLastListUpdate: nil
                selectionUpdateTime: nil
                context: nil
                expression: nil
                fieldList: #(''thisContext'' ''stack top'' ''all temp vars'' ''request'' ''contentBlock''...etc...

ContextVariablesInspector(Inspector)>>object:
        Receiver: a ContextVariablesInspector
        Arguments and temporary variables:
                anObject: WebClient>>httpPut:content:type:do:
                oldIndex: 0
        Receiver''s instance variables:
                dependents: nil
                contents: ''''
                object: WebClient>>sendRequest:contentBlock:
                selectionIndex: 0
                timeOfLastListUpdate: nil
                selectionUpdateTime: nil
                context: nil
                expression: nil
                fieldList: #(''thisContext'' ''stack top'' ''all temp vars'' ''request'' ''contentBlock''...etc...

Debugger>>contextStackIndex:oldContextWas:
        Receiver: a Debugger
        Arguments and temporary variables:
                anInteger: 11
                oldContext: nil
                isNewMethod: true
                selectedContextSlotName: nil
                index: nil
        Receiver''s instance variables:
                dependents: nil
                contents: a Text for ''upToAll: aStringOrByteArray
        "Answer a subcollection from...etc...
                currentCompiledMethod: (SocketStream>>#upToAll: "a CompiledMethod(2352982)")
                contentsSymbol: #source
                multiWindowState: nil
                interruptedProcess: nil
                interruptedController: nil
                contextStack: nil
                contextStackIndex: 7
                contextStackList: an OrderedCollection(''SocketStream>>signalTimeout'' ''[] in Soc...etc...
                receiverInspector: nil
                contextVariablesInspector: nil
                externalInterrupt: false
                proceedValue: nil
                selectingPC: true
                savedCursor: ((CursorWithMask
        extent: 16@16
        depth: 1
        fromArray: #(
                2r0
                2...etc...
                isolationHead: nil
                failedProject: nil
                errorWasInUIProcess: true
                labelString: nil
                message: nil
                untilExpression: nil

Debugger>>toggleContextStackIndex:
        Receiver: a Debugger
        Arguments and temporary variables:
                anInteger: 11
        Receiver''s instance variables:
                dependents: nil
                contents: a Text for ''upToAll: aStringOrByteArray
        "Answer a subcollection from...etc...
                currentCompiledMethod: (SocketStream>>#upToAll: "a CompiledMethod(2352982)")
                contentsSymbol: #source
                multiWindowState: nil
                interruptedProcess: nil
                interruptedController: nil
                contextStack: nil
                contextStackIndex: 7
                contextStackList: an OrderedCollection(''SocketStream>>signalTimeout'' ''[] in Soc...etc...
                receiverInspector: nil
                contextVariablesInspector: nil
                externalInterrupt: false
                proceedValue: nil
                selectingPC: true
                savedCursor: ((CursorWithMask
        extent: 16@16
        depth: 1
        fromArray: #(
                2r0
                2...etc...
                isolationHead: nil
                failedProject: nil
                errorWasInUIProcess: true
                labelString: nil
                message: nil
                untilExpression: nil

Debugger>>debugAt:
        Receiver: a Debugger
        Arguments and temporary variables:
                anInteger: 11
        Receiver''s instance variables:
                dependents: nil
                contents: a Text for ''upToAll: aStringOrByteArray
        "Answer a subcollection from...etc...
                currentCompiledMethod: (SocketStream>>#upToAll: "a CompiledMethod(2352982)")
                contentsSymbol: #source
                multiWindowState: nil
                interruptedProcess: nil
                interruptedController: nil
                contextStack: nil
                contextStackIndex: 7
                contextStackList: an OrderedCollection(''SocketStream>>signalTimeout'' ''[] in Soc...etc...
                receiverInspector: nil
                contextVariablesInspector: nil
                externalInterrupt: false
                proceedValue: nil
                selectingPC: true
                savedCursor: ((CursorWithMask
        extent: 16@16
        depth: 1
        fromArray: #(
                2r0
                2...etc...
                isolationHead: nil
                failedProject: nil
                errorWasInUIProcess: true
                labelString: nil
                message: nil
                untilExpression: nil

PluggableListMorphPlus(PluggableListMorph)>>changeModelSelection:
        Receiver: a PluggableListMorphPlus(2325224)
        Arguments and temporary variables:
                anInteger: 11
        Receiver''s instance variables:
                bounds: 78@145 corner: 518@293
                owner: a PluggableSystemWindow<ConnectionTimedOut: Data receive timed out.>(171...etc...
                submorphs: {a ScrollBar(1726779) . a TransformMorph(3314744)}
                fullBounds: 78@145 corner: 518@293
                color: Color white
                extension: a MorphExtension (1629867) [balloonTextSelector: #messageHelpAt:]  [...etc...
                borderWidth: 1
                borderColor: (Color r: 0.6 g: 0.48 b: 0.48)
                model: a Debugger
                slotName: nil
                open: false
                scrollBar: a ScrollBar(1726779)
                scroller: a TransformMorph(3314744)
                retractableScrollBar: false
                scrollBarOnLeft: true
                getMenuSelector: nil
                getMenuTitleSelector: nil
                hasFocus: false
                hScrollBar: a ScrollBar(1593680)
                hScrollBarPolicy: #whenNeeded
                vScrollBarPolicy: #whenNeeded
                scrollBarThickness: 10
                list: an OrderedCollection(''SocketStream>>signalTimeout'' ''[] in SocketStream>>w...etc...
                getListSelector: #contextStackList
                getListSizeSelector: nil
                getListElementSelector: nil
                getIndexSelector: #contextStackIndex
                setIndexSelector: #debugAt:
                keystrokeActionSelector: nil
                autoDeselect: true
                lastKeystrokeTime: 0
                lastKeystrokes: ''''
                lastClickTime: nil
                doubleClickSelector: nil
                handlesBasicKeys: nil
                potentialDropRow: nil
                hoverRow: nil
                listMorph: a LazyListMorph(1068051)
                hScrollRangeCache: #(401 396 20 ''SocketStream>>signalTimeout'' ''[] in MorphicUIM...etc...
                keystrokePreviewSelector: nil
                priorSelection: nil
                getIconSelector: #messageIconAt:
                getHelpSelector: nil
                dragItemSelector: nil
                dropItemSelector: nil
                wantsDropSelector: nil
                dragTypeSelector: nil
                dragStartedSelector: nil

PluggableListMorphPlus(PluggableListMorph)>>mouseUp:
        Receiver: a PluggableListMorphPlus(2325224)
        Arguments and temporary variables:
                event: [327@225 mouseUp ( red ) 173153907]
                row: 11
        Receiver''s instance variables:
                bounds: 78@145 corner: 518@293
                owner: a PluggableSystemWindow<ConnectionTimedOut: Data receive timed out.>(171...etc...
                submorphs: {a ScrollBar(1726779) . a TransformMorph(3314744)}
                fullBounds: 78@145 corner: 518@293
                color: Color white
                extension: a MorphExtension (1629867) [balloonTextSelector: #messageHelpAt:]  [...etc...
                borderWidth: 1
                borderColor: (Color r: 0.6 g: 0.48 b: 0.48)
                model: a Debugger
                slotName: nil
                open: false
                scrollBar: a ScrollBar(1726779)
                scroller: a TransformMorph(3314744)
                retractableScrollBar: false
                scrollBarOnLeft: true
                getMenuSelector: nil
                getMenuTitleSelector: nil
                hasFocus: false
                hScrollBar: a ScrollBar(1593680)
                hScrollBarPolicy: #whenNeeded
                vScrollBarPolicy: #whenNeeded
                scrollBarThickness: 10
                list: an OrderedCollection(''SocketStream>>signalTimeout'' ''[] in SocketStream>>w...etc...
                getListSelector: #contextStackList
                getListSizeSelector: nil
                getListElementSelector: nil
                getIndexSelector: #contextStackIndex
                setIndexSelector: #debugAt:
                keystrokeActionSelector: nil
                autoDeselect: true
                lastKeystrokeTime: 0
                lastKeystrokes: ''''
                lastClickTime: nil
                doubleClickSelector: nil
                handlesBasicKeys: nil
                potentialDropRow: nil
                hoverRow: nil
                listMorph: a LazyListMorph(1068051)
                hScrollRangeCache: #(401 396 20 ''SocketStream>>signalTimeout'' ''[] in MorphicUIM...etc...
                keystrokePreviewSelector: nil
                priorSelection: nil
                getIconSelector: #messageIconAt:
                getHelpSelector: nil
                dragItemSelector: nil
                dropItemSelector: nil
                wantsDropSelector: nil
                dragTypeSelector: nil
                dragStartedSelector: nil

PluggableListMorphPlus(Morph)>>handleMouseUp:
        Receiver: a PluggableListMorphPlus(2325224)
        Arguments and temporary variables:
                anEvent: [327@225 mouseUp ( red ) 173153907]
        Receiver''s instance variables:
                bounds: 78@145 corner: 518@293
                owner: a PluggableSystemWindow<ConnectionTimedOut: Data receive timed out.>(171...etc...
                submorphs: {a ScrollBar(1726779) . a TransformMorph(3314744)}
                fullBounds: 78@145 corner: 518@293
                color: Color white
                extension: a MorphExtension (1629867) [balloonTextSelector: #messageHelpAt:]  [...etc...
                borderWidth: 1
                borderColor: (Color r: 0.6 g: 0.48 b: 0.48)
                model: a Debugger
                slotName: nil
                open: false
                scrollBar: a ScrollBar(1726779)
                scroller: a TransformMorph(3314744)
                retractableScrollBar: false
                scrollBarOnLeft: true
                getMenuSelector: nil
                getMenuTitleSelector: nil
                hasFocus: false
                hScrollBar: a ScrollBar(1593680)
                hScrollBarPolicy: #whenNeeded
                vScrollBarPolicy: #whenNeeded
                scrollBarThickness: 10
                list: an OrderedCollection(''SocketStream>>signalTimeout'' ''[] in SocketStream>>w...etc...
                getListSelector: #contextStackList
                getListSizeSelector: nil
                getListElementSelector: nil
                getIndexSelector: #contextStackIndex
                setIndexSelector: #debugAt:
                keystrokeActionSelector: nil
                autoDeselect: true
                lastKeystrokeTime: 0
                lastKeystrokes: ''''
                lastClickTime: nil
                doubleClickSelector: nil
                handlesBasicKeys: nil
                potentialDropRow: nil
                hoverRow: nil
                listMorph: a LazyListMorph(1068051)
                hScrollRangeCache: #(401 396 20 ''SocketStream>>signalTimeout'' ''[] in MorphicUIM...etc...
                keystrokePreviewSelector: nil
                priorSelection: nil
                getIconSelector: #messageIconAt:
                getHelpSelector: nil
                dragItemSelector: nil
                dropItemSelector: nil
                wantsDropSelector: nil
                dragTypeSelector: nil
                dragStartedSelector: nil

MouseButtonEvent>>sentTo:
        Receiver: [327@225 mouseUp ( red ) 173153907]
        Arguments and temporary variables:
                anObject: a PluggableListMorphPlus(2325224)
        Receiver''s instance variables:
                timeStamp: 173153907
                source: a HandMorph(1832154)
                type: #mouseUp
                buttons: 0
                position: 327@225
                handler: nil
                wasHandled: true
                wasIgnored: false
                whichButton: 4
                nClicks: 0

PluggableListMorphPlus(Morph)>>handleEvent:
        Receiver: a PluggableListMorphPlus(2325224)
        Arguments and temporary variables:
                anEvent: [327@225 mouseUp ( red ) 173153907]
                filteredEvent: [327@225 mouseUp ( red ) 173153907]
        Receiver''s instance variables:
                bounds: 78@145 corner: 518@293
                owner: a PluggableSystemWindow<ConnectionTimedOut: Data receive timed out.>(171...etc...
                submorphs: {a ScrollBar(1726779) . a TransformMorph(3314744)}
                fullBounds: 78@145 corner: 518@293
                color: Color white
                extension: a MorphExtension (1629867) [balloonTextSelector: #messageHelpAt:]  [...etc...
                borderWidth: 1
                borderColor: (Color r: 0.6 g: 0.48 b: 0.48)
                model: a Debugger
                slotName: nil
                open: false
                scrollBar: a ScrollBar(1726779)
                scroller: a TransformMorph(3314744)
                retractableScrollBar: false
                scrollBarOnLeft: true
                getMenuSelector: nil
                getMenuTitleSelector: nil
                hasFocus: false
                hScrollBar: a ScrollBar(1593680)
                hScrollBarPolicy: #whenNeeded
                vScrollBarPolicy: #whenNeeded
                scrollBarThickness: 10
                list: an OrderedCollection(''SocketStream>>signalTimeout'' ''[] in SocketStream>>w...etc...
                getListSelector: #contextStackList
                getListSizeSelector: nil
                getListElementSelector: nil
                getIndexSelector: #contextStackIndex
                setIndexSelector: #debugAt:
                keystrokeActionSelector: nil
                autoDeselect: true
                lastKeystrokeTime: 0
                lastKeystrokes: ''''
                lastClickTime: nil
                doubleClickSelector: nil
                handlesBasicKeys: nil
                potentialDropRow: nil
                hoverRow: nil
                listMorph: a LazyListMorph(1068051)
                hScrollRangeCache: #(401 396 20 ''SocketStream>>signalTimeout'' ''[] in MorphicUIM...etc...
                keystrokePreviewSelector: nil
                priorSelection: nil
                getIconSelector: #messageIconAt:
                getHelpSelector: nil
                dragItemSelector: nil
                dropItemSelector: nil
                wantsDropSelector: nil
                dragTypeSelector: nil
                dragStartedSelector: nil

PluggableListMorphPlus(Morph)>>handleFocusEvent:
        Receiver: a PluggableListMorphPlus(2325224)
        Arguments and temporary variables:
                anEvent: [327@225 mouseUp ( red ) 173153907]
        Receiver''s instance variables:
                bounds: 78@145 corner: 518@293
                owner: a PluggableSystemWindow<ConnectionTimedOut: Data receive timed out.>(171...etc...
                submorphs: {a ScrollBar(1726779) . a TransformMorph(3314744)}
                fullBounds: 78@145 corner: 518@293
                color: Color white
                extension: a MorphExtension (1629867) [balloonTextSelector: #messageHelpAt:]  [...etc...
                borderWidth: 1
                borderColor: (Color r: 0.6 g: 0.48 b: 0.48)
                model: a Debugger
                slotName: nil
                open: false
                scrollBar: a ScrollBar(1726779)
                scroller: a TransformMorph(3314744)
                retractableScrollBar: false
                scrollBarOnLeft: true
                getMenuSelector: nil
                getMenuTitleSelector: nil
                hasFocus: false
                hScrollBar: a ScrollBar(1593680)
                hScrollBarPolicy: #whenNeeded
                vScrollBarPolicy: #whenNeeded
                scrollBarThickness: 10
                list: an OrderedCollection(''SocketStream>>signalTimeout'' ''[] in SocketStream>>w...etc...
                getListSelector: #contextStackList
                getListSizeSelector: nil
                getListElementSelector: nil
                getIndexSelector: #contextStackIndex
                setIndexSelector: #debugAt:
                keystrokeActionSelector: nil
                autoDeselect: true
                lastKeystrokeTime: 0
                lastKeystrokes: ''''
                lastClickTime: nil
                doubleClickSelector: nil
                handlesBasicKeys: nil
                potentialDropRow: nil
                hoverRow: nil
                listMorph: a LazyListMorph(1068051)
                hScrollRangeCache: #(401 396 20 ''SocketStream>>signalTimeout'' ''[] in MorphicUIM...etc...
                keystrokePreviewSelector: nil
                priorSelection: nil
                getIconSelector: #messageIconAt:
                getHelpSelector: nil
                dragItemSelector: nil
                dropItemSelector: nil
                wantsDropSelector: nil
                dragTypeSelector: nil
                dragStartedSelector: nil

MorphicEventDispatcher>>doHandlingForFocusEvent:with:
        Receiver: a MorphicEventDispatcher
        Arguments and temporary variables:
                currentEvent: [327@225 mouseUp ( red ) 173153907]
                focusMorph: a PluggableListMorphPlus(2325224)
                localEvent: [327@225 mouseUp ( red ) 173153907]
                filteredEvent: nil
        Receiver''s instance variables:
                lastType: nil
                lastDispatch: nil

MorphicEventDispatcher>>dispatchFocusEvent:with:
        Receiver: a MorphicEventDispatcher
        Arguments and temporary variables:
                anEventWithGlobalPosition: [327@225 mouseUp ( red ) 173153907]
                focusMorph: a PluggableListMorphPlus(2325224)
                currentEvent: [327@225 mouseUp ( red ) 173153907]
        Receiver''s instance variables:
                lastType: nil
                lastDispatch: nil

PluggableListMorphPlus(Morph)>>processFocusEvent:using:
        Receiver: a PluggableListMorphPlus(2325224)
        Arguments and temporary variables:
                anEvent: [327@225 mouseUp ( red ) 173153907]
                defaultDispatcher: a MorphicEventDispatcher
        Receiver''s instance variables:
                bounds: 78@145 corner: 518@293
                owner: a PluggableSystemWindow<ConnectionTimedOut: Data receive timed out.>(171...etc...
                submorphs: {a ScrollBar(1726779) . a TransformMorph(3314744)}
                fullBounds: 78@145 corner: 518@293
                color: Color white
                extension: a MorphExtension (1629867) [balloonTextSelector: #messageHelpAt:]  [...etc...
                borderWidth: 1
                borderColor: (Color r: 0.6 g: 0.48 b: 0.48)
                model: a Debugger
                slotName: nil
                open: false
                scrollBar: a ScrollBar(1726779)
                scroller: a TransformMorph(3314744)
                retractableScrollBar: false
                scrollBarOnLeft: true
                getMenuSelector: nil
                getMenuTitleSelector: nil
                hasFocus: false
                hScrollBar: a ScrollBar(1593680)
                hScrollBarPolicy: #whenNeeded
                vScrollBarPolicy: #whenNeeded
                scrollBarThickness: 10
                list: an OrderedCollection(''SocketStream>>signalTimeout'' ''[] in SocketStream>>w...etc...
                getListSelector: #contextStackList
                getListSizeSelector: nil
                getListElementSelector: nil
                getIndexSelector: #contextStackIndex
                setIndexSelector: #debugAt:
                keystrokeActionSelector: nil
                autoDeselect: true
                lastKeystrokeTime: 0
                lastKeystrokes: ''''
                lastClickTime: nil
                doubleClickSelector: nil
                handlesBasicKeys: nil
                potentialDropRow: nil
                hoverRow: nil
                listMorph: a LazyListMorph(1068051)
                hScrollRangeCache: #(401 396 20 ''SocketStream>>signalTimeout'' ''[] in MorphicUIM...etc...
                keystrokePreviewSelector: nil
                priorSelection: nil
                getIconSelector: #messageIconAt:
                getHelpSelector: nil
                dragItemSelector: nil
                dropItemSelector: nil
                wantsDropSelector: nil
                dragTypeSelector: nil
                dragStartedSelector: nil

PluggableListMorphPlus(Morph)>>processFocusEvent:
        Receiver: a PluggableListMorphPlus(2325224)
        Arguments and temporary variables:
                anEvent: [327@225 mouseUp ( red ) 173153907]
        Receiver''s instance variables:
                bounds: 78@145 corner: 518@293
                owner: a PluggableSystemWindow<ConnectionTimedOut: Data receive timed out.>(171...etc...
                submorphs: {a ScrollBar(1726779) . a TransformMorph(3314744)}
                fullBounds: 78@145 corner: 518@293
                color: Color white
                extension: a MorphExtension (1629867) [balloonTextSelector: #messageHelpAt:]  [...etc...
                borderWidth: 1
                borderColor: (Color r: 0.6 g: 0.48 b: 0.48)
                model: a Debugger
                slotName: nil
                open: false
                scrollBar: a ScrollBar(1726779)
                scroller: a TransformMorph(3314744)
                retractableScrollBar: false
                scrollBarOnLeft: true
                getMenuSelector: nil
                getMenuTitleSelector: nil
                hasFocus: false
                hScrollBar: a ScrollBar(1593680)
                hScrollBarPolicy: #whenNeeded
                vScrollBarPolicy: #whenNeeded
                scrollBarThickness: 10
                list: an OrderedCollection(''SocketStream>>signalTimeout'' ''[] in SocketStream>>w...etc...
                getListSelector: #contextStackList
                getListSizeSelector: nil
                getListElementSelector: nil
                getIndexSelector: #contextStackIndex
                setIndexSelector: #debugAt:
                keystrokeActionSelector: nil
                autoDeselect: true
                lastKeystrokeTime: 0
                lastKeystrokes: ''''
                lastClickTime: nil
                doubleClickSelector: nil
                handlesBasicKeys: nil
                potentialDropRow: nil
                hoverRow: nil
                listMorph: a LazyListMorph(1068051)
                hScrollRangeCache: #(401 396 20 ''SocketStream>>signalTimeout'' ''[] in MorphicUIM...etc...
                keystrokePreviewSelector: nil
                priorSelection: nil
                getIconSelector: #messageIconAt:
                getHelpSelector: nil
                dragItemSelector: nil
                dropItemSelector: nil
                wantsDropSelector: nil
                dragTypeSelector: nil
                dragStartedSelector: nil


--- The full stack ---
UndefinedObject(Object)>>doesNotUnderstand: #at:ifAbsentPut:
DebuggerMethodMapForClosureCompiledMethods>>privateTempRefsForContext:startKeysToBlockExtents:
DebuggerMethodMapForClosureCompiledMethods>>tempNamesForContext:
Context>>tempNames
ContextVariablesInspector>>fieldList
ContextVariablesInspector(Inspector)>>object:
Debugger>>contextStackIndex:oldContextWas:
Debugger>>toggleContextStackIndex:
Debugger>>debugAt:
PluggableListMorphPlus(PluggableListMorph)>>changeModelSelection:
PluggableListMorphPlus(PluggableListMorph)>>mouseUp:
PluggableListMorphPlus(Morph)>>handleMouseUp:
MouseButtonEvent>>sentTo:
PluggableListMorphPlus(Morph)>>handleEvent:
PluggableListMorphPlus(Morph)>>handleFocusEvent:
MorphicEventDispatcher>>doHandlingForFocusEvent:with:
MorphicEventDispatcher>>dispatchFocusEvent:with:
PluggableListMorphPlus(Morph)>>processFocusEvent:using:
PluggableListMorphPlus(Morph)>>processFocusEvent:
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
[] in [] in [] in HandMorph>>sendFocusEvent:to:clear:
BlockClosure>>ensure:
MouseButtonEvent(MorphicEvent)>>becomeActiveDuring:
[] in [] in HandMorph>>sendFocusEvent:to:clear:
BlockClosure>>ensure:
HandMorph>>becomeActiveDuring:
[] in HandMorph>>sendFocusEvent:to:clear:
BlockClosure>>ensure:
PasteUpMorph>>becomeActiveDuring:
HandMorph>>sendFocusEvent:to:clear:
HandMorph>>sendEvent:focus:clear:
HandMorph>>sendMouseEvent:
HandMorph>>handleEvent:
HandMorph>>processEvents
[] in WorldState>>doOneCycleNowFor:
Array(SequenceableCollection)>>do:
WorldState>>handsDo:
WorldState>>doOneCycleNowFor:
WorldState>>doOneCycleFor:
PasteUpMorph>>doOneCycle
[] in MorphicProject>>spawnNewProcess
[] in BlockClosure>>newProcess

'

tim
[1] a lesser Hell
--
tim Rowledge; [hidden email]; http://www.rowledge.org/tim
Useful Latin Phrases:- Re vera, potas bene = Say, you sure are drinking a lot.