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Evaluating "Morph browse" produces an exception "SubscriptOutOfBounds:1"
in method "CategoryWidget>>categoryWrapper: anItem",
in the line "anItem first == $*"
where anItem is #''.
This seems to be caused by the CategoryWidget instance variable 'categories' having contents:
#(#'' '--- all ---' #accessing #'accessing - extension' #'accessing - properties' #'accessing-backstop' .....etc)
where the first element #'' seems suspect. Using #haltOnce in CategoryWidget>>getCategoryItem: to look at several other classes seems that the first element of instance variable 'categories' is always '--- all ---'.
So the issue then is how did #'' get in the list? At the time was adding & removing protocols from class Morph via the Nautilus context menu in the Protocols Pane. It was very slow doing so - on the order of five seconds to update the list. I had got the spelling wrong (and incidentally <rename> did not work) so I was removing and re-adding with the correct spelling. Then the SubscriptOutOfBounds started to occur.
I have seen this a couple of times before but had not dug into it previously (they were throw away images).
I am continuing to dig further to find a reproducible case, but I've report what I know so far since I think this is quite an important bug, and maybe others have seen it also.
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Priority: 2 – Really Important
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Status: Work Needed
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Assigned to: Everyone
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Milestone: Pharo3.0
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Nautilus: 1. Pharo Image
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