I regularly got hit by this kind of lockup.

Do not know exactly why it locks up but then it is "kill pharo" "recover changes" and "change sorter" fun session... Got one an hour ago, drives me up the wall.

It is one of the reasons that made me add the Save with Timetag feature.��

Inline image 1

Will be nicer when the image compaction will work because this makes me a couple of huge files (space is cheap, but the size seems ��to affect autocompletion speed for some reason).

Phil

On Tue, Feb 7, 2017 at 10:35 AM, Denis Kudriashov <dionisiydk@gmail.com> wrote:

2017-02-07 10:30 GMT+01:00 Denis Kudriashov <dionisiydk@gmail.com>:
More simple way to reproduce:

#(2) select: [:i| i]

Problem somehow related to mustBeBoolean error. If you try debug

#(2) select: [:i| i / 0]

Debugger will fallback into #/ method at ZeroDivide statement. But with mustBeBoolean trick it's not work.

I open issue��19662.

Also I found another funny issue. Try debugIt following expression:
1 ifTrue: [2].
You will be wondering that debugger will not able to open.