Folks -

I have just released a bunch of updates.  Most of these were painstakingly culled from the Squeak list by Stefan, for which we thank all of you, and him, greatly.

I decided to jump the gun and release the symbol printing changes after living with them all day.  Hey, what are test pilots for anyway?  Thanks to Roel Wuyts for taking the lead here.  Note my comment on 2040 regarding the new usage of Symbol>>isLiteral.  There is a fair chance this will break something.  All I can say is it's the RIght Thing to do, and we will happily fix anything that breaks.

	- Dan
-------------------------
2006PWSfixes-mjg

2007FourTweaks-di -- Dan Ingalls -- 24 April 2000
Changes the compilation of ifNotNil: for better code and more consistency with decompilation.
Changes interval>>valuesInclude: to avoid slow fraction computations.
Changes Symbol>>storeOn: to take advantage of the #'any chars' construct.
Changes the comment in SystemDictionary>>recompileAllFrom: because it used to omit classes.

2008ModProjClassHack -- Dan Ingalls -- 5 April 2000
Prefatory to putting new classes into local environments, classes added in isolated projects must not be revoked upon exit.  This hack accomplishes this, at the cost of added classes not being local to the project.

2009HighlightingSelFix-sr -- Stephan Rudlof -- 23 April 2000
Fix for PluggableListMorph/SimpleHierarchicalListMorph:
Highlighting/unhighlighting works correctly now, if colors of StringMorphs are changed programmatically to highlight/unhighlight colors of PluggableListMorph and SimpleHierarchicalListMorph.

2010CPPPluginEnh-rmf -- Robert M Fure -- 20 April 2000
WARNING: I didn't test this enhancement --sma
Here's a very small file-in that gives C++-generation capability to the CCodeGenerator and friends. I wrote it while developing a plug-in that interfaces to a C++ DLL. How does it differ from the ordinary mode? Mostly just two things:
   1) Places generated code in a file with a .cpp suffix.
   2) Puts extern ''C'' in the right places so that the plug-in's exported
 
Routines have the names that the Squeak plug-in mechanism expects them to.
To create a C++ plug-in, just do the usual thing, adding the trivial class 
method
	isCPP
		^ true
to your plug-in class (the one that actually gets translated into C/C++)."

2011PNG-dsm -- Duane Maxwell, Bob Arning -- 19 April 2000
This changeset implements a reader for Portable Network Graphics (PNG) files.
This is an alpha release.  While it seems to read all of the PNG test
images, more testing is needed.  It does little to no error checking, and
does not utilize the gamma information.  It also doesn't yet write PNG
files - this is left as an exercise for the reader.
See http://www.cdrom.com/pub/png/ for more information about PNG
Submitted by Duane Maxwell/Entrypoint"

2012FormEditor-sma -- Stefan Matthias Aust -- 22 April 2000
The FormEditor's blank cursor doesn't work and is irritating.
A crosshair is better."

2013ContextTrace-sma -- Stefan Matthias Aust -- 22 April 2000
As discussed in the mailing list, #trace: walkbacked if traced object didn't have correct print strings. This patch wrapps printing in an exception handler and unifies tracing on Transcript and on files, also providing a new method trace: aBlock on: aStream for general usage."

2014KwSpeedup-av -- Andres Valloud -- 22 April 2000
Speedup of String>>keywords and removal of isEmtpy."

2015SimpleMouseBtnFix-jlb -- Jim Benson -- 13 April 2000
Here's a fix for a small bug in the SimpleButtonMorph. The line: 'oldColor _
nil' was inserted to reset the cmd-drag flag."

2016HttpSocketFix-gr -- Gerardo Richarte -- 14 April 2000
Ok, I'm not sure if this a bug or not, but, I know that I needed to fix/change this in order to get out of an infinite loop when updating my image from a remote server (I'm actually using a swiki as updates server, but I don't think this makes a big difference), and it happened every time I tried to update.
What I changed is size for position in:
    bytesRead _ self primSocket: socketHandle receiveDataInto: buf startingAt: 1
        count: (length - response size).
    for:
    bytesRead _ self primSocket: socketHandle receiveDataInto: buf startingAt: 1
        count: (length - response position).
as response is initialized with a String new: length, response size is always = length, so length - response size is 0, and then nothing is read. What I don't understand is why this works sometimes... can somebody help me on this?
Ok, I checked #size implementation in 'response class', and it says 'readLimit max: position', so I think #size is not what's needed... Why was it working? was it working when all the response came before entering this method (in beginning?) no way, becouse it still worked when some 'data was late' were printer on the Transcript.
Conclusion: I don't know if this fix is right or wrong, but I'm sure I needed it."

2017RobustCQ-ls -- Lex Spoon -- 8 April 2000
WARNING: Untested, just copied --sma
Two changes to the BSD-style listenLoop in ConnectionQueue to deal with unusual circumnstances.
First, make the listener socket be an instance variable instead of a temporary variable.  This way, when the CQ is destroy-ed, the listening socket can also be conveniently destroyed.
Second, if the listener socket becomes invalid, restart the listenLoop from scratch.  This is important if a ConnectionQueue is saved, because the socket will become invalid when the image starts up again."

2018Speedups-av -- Andres Valloud -- 11 April 2000
Fast implementations of methods related to
copying a SequenceableCollection, padding
it with anObject, etc."

2019Array2DEnh-sma -- Stefan Matthias Aust -- 22 April 2000
Refactored and improved Array2D, including changes from Michael Rüger.
It's still not really useful and I'd propose to move it out of the Collection hierarchy."

2020CloseBoxFlashFix-jmm -- John M McIntosh johnmci at smalltalkconsulting.com -- 31 March 2000
The close box and the grow box get redrawing continuously when the red button is down, this results in lots of redraw activity. Change the logic to remember state and only redraw when needed"

2021SemaphoreCmp-sma -- Stefan Matthias Aust -- 22 April 2000
Discussing a problem with comparing Semaphores, Wim Boot and Tim Rowledge agreed upon
>	I think Semaphore comparison (including #hash) should be identity based,
>	not content based.
So I implemented (but not really tested) it that way."

2022LowSpace-go -- Georg Gollmann -- 30 March 2000
The current LowSpaceWatcher just alerts the user. This is not useful for servers or for situations when objects are cached and should be discarded when space becomes tight. I have now generalized the mechanism used in my MailArchiver (http://macos.tuwien.ac.at/Squeak/mailArchiver.html).
As an example setup is now:
   Smalltalk memoryHogs add: ArchivedMail
When space is low #freeSomeSpace gets sent:
	ArchivedMail>freeSomeSpace
		''Remove all cached text from my instances.''
		self allInstancesDo: [:m | m purgeText]
If freeSomeSpace fails to free enough memory - maybe because no memoryHogs have been registered - the old behavior (alert the user) is invoked."

2023SchedulingBugFix-fm -- Florin Mateoc -- 9 April 2000
WARNING: I didn't test this as much as probably needed --sma
If you try (after saving your image)
""[1 halt] fork"", first of all the notifier view will be hidden behind the active window. Then if you select 'resume' Squeak hangs. The first problem is that the scheduling code does not expect a controller (in this case the notifier) to be started from a non-UI thread, actually you get interesting results even if you say ""[1 inspect] fork"".
The second problem is that the debugger code does not expect to have been started from a non-UI thread (with interruptedController being nil)."

2024DecompileFix-th -- Torge Husfeldt <jean.jaques.gelee at gmx.de> -- 17 March 2000
Fixes a bug in decompiling while constructs.
Now creates a ReturnNode as seems appropriate.
Example:
	[true]
		whileTrue: [^#symbol]
Used to decompile as:
	[true]
		whileTrue: [#symbol].
	^ self"

2025HeapFix-mir -- Michael Rüger -- 22 March 2000
fixes a bug when enumerating Heaps."

2026HirBrowserFix-mir -- Michael Rüger -- 22 March 2000
This change set fixes a problem when removing a class which is currently in the class list of a hierarchy browser"

2027ColorPickerFix-raa -- Bob Arning -- 26 March 2000
- handle ColorPickerMorph instances which existed prior to addition of <theSelectorDisplayMorph>"

2028MinimumSize-jlb -- Jim Benson -- 27 March 2000
This changeset allows you to modify the minimum extent to which a window may be resized. To set this extent, send the message #minimumExtent: to the window"

2029ScaleMorph-rcs -- Russell Swane -- 16 March 2000
Modified ScaleMorph. Added some options on appearance, so most times a ScaleMorph would be used, should be able to use as is without subclassing. Also split #drawOn: into multiple submethods for a subclass I've been using. New interface is a strict superset of old interface so nothing should break."

2030HandMorphCleanUp-sma -- Stefan Matthias Aust -- 24 March 2000
Get rid of 'isKindOf: HandMorph'"

2031EnvEditorFix-mjt -- Mike Thomas -- 24 March 2000
While investigating Squeak's music interface at one this morning Australian EST I noticed that the horizontal scale gets crowded when you increase the maxTime by dragging the envelope end point to the right.
This changeset provides dynamic calculation of the major and minor tick points to resolve the problem."

2032FileDir-bf -- Bert Freudenberg -- 22 March 2000
Enforces the absoluteness of FileDirectories for Windows. Also corrects FileDirclass>>splitName:to:, for the DOS 'C:' case (which makes the specialized fullNameFor: method obsolete) and for the Unix '/foo' case.
sma added support for Windows UNC names, i.e. \\magus\dev\dir\file.txt"

2033MissingTextColor-dns -- David N Smith -- 24 March 2000
TextColor supports each of the three RGB colors at full intensity(red, green, blue), all three paired combinations (rg,gb,br: cyan, magenta, yellow) at full intensity, and it supports black, but no white. White is basic: it is all three of the colors at full intensity. It's the only basic color missing.
sma added method categories and a missing #hash method."

2034GradientWorld-raa -- Bob Arning -- 24 March 2000
Permit the world to be drawn with a gradient. Note that the world has a #color: method that sets the fillColor2 to be the same as color, thus eliminating the gradient. So, if you want to change the color and keep the gradient, calls to #color: should be followed by a call to #gradientFillColor:.
World color: Color green.
World gradientFillColor: Color lightGreen

2035Celeste-dvf -- Daniel Vainsench -- 8 April 2000
I like Celeste, but it's slow at reading 10,000 message categories (not slower than any other mailer I know of, but still not fast enough). This changeset makes it read only the latest 100, adding a menu option to read the rest. Should at some point give an indication if not showing all messages.
If anyone finds this useful, or has whatever comments, I'd be happy to hear.
I made the constant 100 a method and changed the default to 200 --sma"

2036WarpBltFix-kfr -- Karl Ramberg -- 22 April 2000
Hey, my first bug fix. Two displaying objects were overlapping creating a unwanted effect."

2037FreeCellWorldBug-smg -- Sean McGrath -- 27 March 2000
Open a morphic World, new morph, games, freecell, statistics:
 UndefinedObject(Object)>>doesNotUnderstand:
 AlignmentMorph(Morph)>>openInWindowLabeled:inWorld:
 AlignmentMorph>>openInWindowLabeled:inWorld:
 AlignmentMorph(Morph)>>openInWindowLabeled:
 FreeCellStatistics>>display
 FreeCell>>statistics
 [] in SimpleButtonMorph>>doButtonAction
 BlockContext>>ensure:
 CursorWithMask(Cursor)>>showWhile:
 SimpleButtonMorph>>doButtonAction
In Morph, 
 openInWindowLabeled: aString
        ^self openInWindowLabeled: aString inWorld: World
World in nil. Changing 'World' to 'self currentWorld' fixes the symptom.
I have no idea what the problem is, since I understand very little
Morphic.
This is probably a general problem.  There're are some 106 users of the global 'World' I'm too tired to check them all. Most of them should be tranlated into a test whether we're running a full screen world or an MVC world.  The others might be candidates for #currentWorld. --sma"

2038FileCntBrwEnh-sma -- Stefan Matthias Aust -- 22 April 2000
Now my beloved brown browser also has a handy >>file into new changeset<< feature."

2039PlgTextMorphFix-sr -- Stephan Rudlof -- 29 March 2000
Dan changed the line
		[self setText: textToAccept shallowCopy.
to
		[self setText: self getText.
; probably to save time.
It this was his goal, reverting to the previous version given here should be correct.
If he had another intention there is needed more thinking..."

2040SymbolPrinting-rwdi -- Roel Wuyts, Dan Ingalls -- 25 April 2000
This changeSet incorporates Roel Wuyts's suggested change to print symbols with a #-sign in their printString.
It also uses the #'any chars' construct to ensure that any symbol can be printed as a literal.  
NOTE:  This implies a change in the definition of Symbol>>isLiteral to always return true (it used only to return true for symbols that can be printed without string quotes as #someSymbol).  If you really want to test whether a symbol can be printed without string quotes, then use the expression (Scanner isLiteralSymbol: theSymbol).