IF you attempt to save a method that has an unknown symbol (my usual spelling mistake!) AND you have the -all- message category selected then the method text is whipped out from under you.

It appears to be a problem in Browser>messageCategoryListIndex:, or at least the usage of it within Browser>contents:notifying:. There is an attempt to correct for the 'wrong' category being selected and the code ends up clearing the code view. There is also a trivial bug in Browser>selectUnclassifiedCategory, where 0 is hardcoded as the index of the 'no messages' category; it seems more reasonable for it to be 1, since it follows 'all' which is an imaginary entry.

As for a fix, I imagine changing the contents:notifying: code to send some other message that changes the category that is used to compile under but does not affect the browser display should work. Since both of the methods (#selectOriginalCategoryForCurrentMethod & #selectUnclassifiedCategory) are only used in contents:notifying: this ought to be reasonably safe.

It seems to be ok if we change #selectMessageCategoryNamed: to avoid the display updating and change #selectUnclassifiedCategory to use it with the name of the category rather than the index.

Possible fix changeset enclosed.

tim