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This week (21/2023) on the Pharo Issue Tracker
by Marcus Denker May 26, 2023

May 26, 2023

# This week (21/2023) on the Pharo Issue Tracker. This we we merged all changes done during the last weeks in Pharo11 to Pharo12. ClassOrganization refactoring continues, we will soon be able to inline the class into ClassDescription. # Pharo 11 - Backport fix to calypso method search #13794 https://github.com/pharo-project/pharo/pull/13794 # Fixes - merge Pharo11 changes into Pharo12 #13784 https://github.com/pharo-project/pharo/pull/13784 - Fix reaction of Epicea to protocol removal #13801 https://github.com/pharo-project/pharo/pull/13801 - Migrate variables of VariableLayout only if old instance was also variable #13789 https://github.com/pharo-project/pharo/pull/13789 - Fix #13478: Filter on calypsoName instead of name #13778 https://github.com/pharo-project/pharo/pull/13778 - Fix: RBClassRegexRefactoring #13770 https://github.com/pharo-project/pharo/pull/13770 - Loading Pharo12 branch of Sindarin in BaselineOfNewTools for Pharo 12 #525 https://github.com/pharo-spec/NewTools/pull/525 - Add source folder of Sindarin #530 https://github.com/pharo-spec/NewTools/pull/530 # Protocols / ClassOrganizer - Remove user of #organization in Debugger #531 https://github.com/pharo-spec/NewTools/pull/531 - Method announcements should use real protocols #13730 https://github.com/pharo-project/pharo/pull/13730 - Inline ClassOrganization>>extensionProtocols #13783 https://github.com/pharo-project/pharo/pull/13783 - Reduce users of #organization #13785 https://github.com/pharo-project/pharo/pull/13785 - organization, not organisation #13782 https://github.com/pharo-project/pharo/pull/13782 - Remove dead method ClassDescription>>#zapOrganization #13774 https://github.com/pharo-project/pharo/pull/13774 - Inline ClassOrganization>>#hasProtocol: #13776 https://github.com/pharo-project/pharo/pull/13776 # Tests - Add tests for Calypso's item filter #13786 https://github.com/pharo-project/pharo/pull/13786 - FIx DebugSession test #13811 https://github.com/pharo-project/pharo/pull/13811 - Fix completion tests after p11 synch #13809 https://github.com/pharo-project/pharo/pull/13809 - Improve CoverageCollectorTest assertions #13787 https://github.com/pharo-project/pharo/pull/13787 - fix-testConstantBlockClosure-CleanBlocks #13781 https://github.com/pharo-project/pharo/pull/13781 # Cleanup - Remove unimplemented code StSpotterQuery.class.st #528 https://github.com/pharo-spec/NewTools/pull/528 - Remove Deprecated Package Spec2-ObservableSlot #1396 https://github.com/pharo-spec/Spec/pull/1396 - Merge SHTextStyler and SHRBTextStyler #13756 https://github.com/pharo-project/pharo/pull/13756 - Cleanup dead code in RubShoutStylerDecorator #13771 https://github.com/pharo-project/pharo/pull/13771 - Update StGenericGenerator.class.st #526 https://github.com/pharo-spec/NewTools/pull/526

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Fwd: ð Just scheduled: Stephane Ducasse - Pharo: a vision implemented step by step
by stephane ducasse May 24, 2023

May 24, 2023

Hi guys I will present some points around Pharo and P11 in particular For our May presentation, Stephane Ducasse will present the vision behind Pharo and how that is been implemented incrementally across multiple releases. In Stef's words: "The vision of Pharo is based on three pillars: - First we want to make sure that Pharo is used to develop complex and robust systems (by complex we means multiple millions lines of code or objects). - Second we want Pharo to be a modular system that can be versatile (Pharo on iot, on large servers, in the web browserâ¦.) - Third Pharo should be an evolvable system that can adapt to new needs (modular tools, first class slot, new debuggers, packagesâ¦). Sometimes it can be unclear that we follow this vision but over the years we are delivering this vision and we will continue. In this talk I will briefly recall the vision behind Pharo and show the achievements so far. I will show that our development is heavily backed by tests. In the second part of the talk I will focus on the current effort to improve the user interface. I will show that the reimplementation of the Spec UI framework is a cornerstone of the future replacement of Morphic and use of GTK. I will also answer questions about Pharo 11 and Pharo 12." > Begin forwarded message: > > From: UK Smalltalk User Group <info(a)email.meetup.com> > Subject: ð Just scheduled: Stephane Ducasse - Pharo: a vision implemented step by step > Date: 24 May 2023 at 01:37:08 CEST > To: stephane.ducasse(a)inria.fr > > > <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpdrra25MtI4Czod…> > UK Smalltalk User Group <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpdrra25MtI4Czod…> scheduled a new event > > <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpdrra25MtI4Czod…> > Stephane Ducasse - Pharo: a vision implemented step by step <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpdrra25MtI4Czod…> > Wednesday, may 31, 2023 7:00 PM - 9:00 PM > Online event > RSVP now <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpdrra25MtI4Czod…> > Details: For our May presentation, Stephane Ducasse will present the vision behind Pharo and how that is been implemented incrementally across multiple releases. In Stef's words: "The vision of Pharo is based on three pillars: - First we want to make sure that Pharo is used to develop complex and robust systems (by complex we means multiple millions lin... > Hosted by: > gcorriga > > More events recommended for you: > <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpdrra25MtI4Czod…> > Reclaiming Your Power: A Woman's Journey to Healing from Narcissistic Abuse <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpdrra25MtI4Czod…> > Midlife Reinvention For Women Meetup Group > <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpdrra25MtI4Czod…> > Meet up for wives of tech entrepreneursÂ <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpdrra25MtI4Czod…> > Wives network of London based tech entrepreneurs > <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpdrra25MtI4Czod…> > Free Property Investment Training - Meet and Greet <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpdrra25MtI4Czod…> > FREE Property Investing Training > <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpZmev6DrQOwiRvx…> <http://clicks.meetup.com/ls/click?upn=8Y2vsX5dSU9BIj3r0FDX3kuj5bdG4U9taHSR2…> > You received this message because you are a registered member of Meetup. > Unsubscribe <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpdrra25MtI4Czod…> from this type of email. Manage your settingsÂ <http://clicks.meetup.com/ls/click?upn=8Y2vsX5dSU9BIj3r0FDX3hKPTxoZ-2F4CoTjt…>for all types of email updates. > Visit a your account page <http://clicks.meetup.com/ls/click?upn=8Y2vsX5dSU9BIj3r0FDX3hKPTxoZ-2F4CoTjt…> to change your contact details, privacy settings, and other settings. > Meetup LLC <http://clicks.meetup.com/ls/click?upn=8Y2vsX5dSU9BIj3r0FDX3lSPClZdoQRTM87Zc…>, POB 4668 #37895 NY NY USA 10163 > Read our Privacy Policy <http://clicks.meetup.com/ls/click?upn=XbaZ37larFA-2FuV5MohrYpdrra25MtI4Czod…>.

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The curious case of constant blocks
by Marcus Denker May 22, 2023

May 22, 2023

You might have come across code like this: ``` minHeight "answer the receiver's minHeight" ^ self valueOfProperty: #minHeight ifAbsent: [2] ``` In the case the #minHeight property is not set, it returns 2. Code like this is quite common, another example are empty ifAbsent blocks: ``` someDictonary remove: anObject ifAbsent: [] ``` If we analyse the system, we can easily find all of them. The best is to use the AST for this: ``` allBlocks := Smalltalk globals methods flatCollect: [:method | method ast blockNodes ]. allBlocks size. "86805" nonInlinedBlocks := allBlocks select: [:blockNode | blockNode isInlined not]. nonInlinedBlocks size. "36661" âthe blocks are actually just constant" constantBlocks := nonInlinedBlocks select: [:blockNode | blockNode isConstant]. constantBlocks size. "2572" ``` So there are 2572 constant (literal) blocks. You can inspect constantBlocks to explore them: Constant or empty blocks ([] is just [nil]) do not feel like something to think too much about. After all, they just retunr the literal when you send #value to them. What can be the problem? But: they are blocks, and in a system without clean blocks, they are full blocks, which means they are created at runtime for *every* execution of the [] block. And they are blocks, so there is a CompiledBlock created for each and sending #value will execute that bytecode, with the JIT having to create binary code. For Morph>>#minHeight the bytecode would be: ``` "'49 <4C> self 50 <20> pushConstant: #minHeight 51 <F9 01 00> fullClosure:a CompiledBlock: [2] NumCopied: 0 54 <A2> send: valueOfProperty:ifAbsent: 55 <5C> returnTop'" ``` This is expensive! [2] is the same as 2 (the only thing we can do with the block is to send #value, and we can do that with the literal directly). ``` [ 2 value ] bench. [ [2] value ] bench 218625362.000/25750416.833 "8.490167884188363" ``` So there >factor 8 for "create and evaluate" in difference between the two! This lead to people actually rewriting code to use the literal directly, e.g. we could just change it to ``` minHeight "answer the receiver's minHeight" ^ self valueOfProperty: #minHeight ifAbsent: 2 ``` I am guilty of using this sometimes when optimizing for performance, but it does not feel nice. Yet another rule for performance to think about, and the number of constant blocks that are there shows that this is not how people want to do it. And, most important: it just works for 0 arg constant blocks, as literals undestand #value, but not #value:, #value:value: and so on. So what can we do? The first thing (and I am sure you are thinking about that alreary) is the idea of clean blocks. Clean blocks are blocks that only need (to be created) information that the compiler has statically at compile time. you can look at RBProgramNode>>#isClean and the overrides in RBBlockNode>>#isClean RBVariableNode>>#isClean to see the exact cases, but for this case, all what you need to know is that a constant block, as it accesses nothing, is of course the trivial case of a clean block. If we compile them as clean blocks, we will immediatly move creation to compile time, and runtime property will be the same as using a literal. With the added benefit that constant blocks with arguments are supported, too. But: using "2" instead of [2] is not only faster for *creation*, it is faster when evaluting, too. The reason is that "2 value" sends #value, which executes Object>>#value, which is ``` value ^self ``` Which is a Quick return self method, aka a primitive: ``` self symbolic "'Quick return self'" ``` This is *very fast*. While even as a clean block, we have, for every clean block, it's own method (compiledBlock) that the VM has to execute and thus create code for: self symbolic "'25 <20> pushConstant: 2 26 <5E> blockReturn'" It seems the fact that one is a quick return and the other a push/return is for the JIT not that of a difference, it matters for the interpreter more. But the JIT has to create code for *every* constant block, and #value means executing BlockClosure>>#value, which triggers execution of that compiedBlock. We thus have to execute two methods, not one. And the JIT has to cache all the generated code. So can we do better? It is actually easy to implement a class ConstantBlockClosure, subclass of CleanBlockClosure, that implements all the #value methods to just return the constant value: ``` value ^literal ``` Thus we get the same as with sending #value to the literal directly: we send #value, we execute one method that is a quick return. And the good news: there is #optionConstantBlockClosure in the compiler, and it is enabled by default in Pharo11! The reason why we can turn on Constant Bocks without problem is that they are never on the stack, so we do not need to take care to fix all the tools to know how to deal with them. (Constant Bocks actually do have a CompiledBlock so that the e.g. for âsenders ofâ we check the literals just as if it would be a normal clean block, it is just never executed) If we go back to our method #minHeight, this means the bytecode looks like that: ``` self symbolic "'49 <4C> self 50 <20> pushConstant: #minHeight 51 <21> pushConstant: [2] 52 <A2> send: valueOfProperty:ifAbsent: 53 <5C> returnTop'" ``` Thus, in Pharo11, the execution path of all the >2500 constant blocks end up executing one of the #value methods of ConstantBlockClosure. To get all the exceptions corect when sending e.g. #value ot a 1-arg block, there are subclasses for 1/2/3 args, we do not support 4 arg cleanBlocks for now (there are not many). If you want to check that this really works, go to ConstantBlockClosure>>#value and add a Counter via the Debug menu, it's really called a lot! Marcus

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Woden download from Github error
by Aik-Siong Koh May 21, 2023

May 21, 2023

Hi: I opened Pharo 9.0 - 64bit image. Executed Metacello new baseline: 'WodenEngine'; repository: 'github://woden-engine/woden'; load I got the following error: NotFound: revspec 'master' not found Please advise. Thanks, Aik-Siong Koh

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Fun with CleanBlocks or: Speeding up Dictionary>>#at:
by Marcus Denker May 19, 2023

May 19, 2023

Dictionary lookup is used a lot. Let's look at Dictionary>>#at: at: key "Answer the value associated with the key." ^ self at: key ifAbsent: [self errorKeyNotFound: key] The method looks simple and at a first glance, there are no obvious problems. But if we look at it again, we see that for every execution of #at:, the block [self errorKeyNotFound: key] has to be created. The method stores a CompiledBlock in the literals, and a bytecode "create block" creates the block: ``` (Dictionary>>#at:) symbolic "'41 <4C> self 42 <40> pushTemp: 0 43 <40> pushTemp: 0 44 <F9 00 01> fullClosure:a CompiledBlock: [self errorKeyNotFound: key] NumCopied: 1 47 <A1> send: at:ifAbsent: 48 <5C> returnTop'" ``` This happens at *every* execution of #at:, even though the block that we spend time to create will never be executed at runtime (outside of real errors). If you look at the rest of the code path of #at: in a Dictionary, it is carefully written to avoid block creation by using optimized contructs (ifTrue: and friends). Could clean blocks help? Clean blocks are blocks that only use data that the compiler knows at compile time, thus we can create a CleanBlockClosure (which has the CompiledBlock) and store *that* as a Literal. This then would mean that we could just use as fast pushLiteral: to push the block, no creation at runtime needed. Clean blocks are not yet enabled by default, but we can use a compiler option pragma to enable them just for this method: ``` <compilerOptions: #(+ optionCleanBlockClosure)> ``` The problem is that the block references both "self" and the key to be able to show a nice error message. Referencing either one make the block not clean. Could we change the block to be clean? I guess we could not refer self and inline the method #errorKeyNotFound: (knowing the instance is not that important for logging the error in production, for example). But we do want to know the key that is not found, it really simplifies debugging especially if you have to look at log files. If we closely look at the block: we know a bit more about it and how it is used. We know that if it gets evaluated, that evaluation will *always* happen with the homeContext of the block on the stack, as it is will always be #at:ifAbsent: that evaluates that block. And in that case, there is a trick that we can do: we can use reflection to read the needed values via the stack. You might not be aware, but the debugger needs some quite interesting features from the reflective layer of the system to provide the user experience that you take for granted (and that feels trivial). Imagine a block like that: ``` tt | temp1 temp2 | temp1 := 1. temp2 := 2. self class methods do: [ :each | self halt. each with: temp1 ]. ^ temp2 ``` The block does not reference temp2, so it actually is created as a block that does not know temp2 at all. temp2 is not accessibe from the block or it's context. Yet, when debugging, you want to just be able to write temp2 in the block and eval it (without saving the method), as *if* you would access the temp in this block and recompile, the compiler would compile a different block that would know temp2. So the reflective API of Context (and the infrastructure of reading Variables reflectively), is build in a way that #readVariableNamed: will use the stack to find the value of temps that are not available in the block context, but could be available if they would be referenced statically. And if you think about it, we have just a case like that here, in reverse: if we would use #readVariableNamed: on the context to read the argument, the compiler would not see a read of "key", thus compile a block that does not have that temp available. And if we then read "self" via thisContext, too, the compiler sees a block that it can compile as a clean block: at: key "Answer the value associated with the key." <compilerOptions: #(+ optionCleanBlockClosure)> ^ self at: key ifAbsent: [ "this block is never executed, yet we pay runtime cost to create it if it is a full block. We use instead the reflective API to read the argument and receiver via the stack, making the block clean. We enable cleanBlocks for this method by setting optionCleanBlockClosure as it is not yet enabled by default" KeyNotFound signalFor: (thisContext readVariableNamed: #key) in: thisContext sender receiver "This is equivalent to: self errorKeyNotFound: key" ] Let's look at the printed symbolic bytecode: ``` Dictionary>>#at:) symbolic "'41 <4C> self 42 <40> pushTemp: 0 43 <20> pushConstant: [ "this block is never executed, yet we pay runtime cost to create it if it is a full block. We use instead the reflective API to read the argument and receiver via the stack, making the block clean. We enable cleanBlocks for this method by setting optionCleanBlockClosure as it is not yet enabled by default" KeyNotFound signalFor: (thisContext readVariableNamed: #key) in: thisContext sender receiver "This is equivalent to: self errorKeyNotFound: key" ] 44 <A1> send: at:ifAbsent: 45 <5C> returnTop'" ``` you see that it now uses pushConstant: to push the pre-compiled CleanBlockClosure, which is *much* faster. A very naive benchmark using a fairly large Dictionary (Smalltalk globals): ``` [Smalltalk globals at: #Object] bench 8591996.801/7040335.266 "1.220395972119888" ``` Shows a speedup of ~20%, which is qute a lot! Of course, this is a hack. For one, it just solves this for this one case. And we do not want to add code like that everywhere. And real world impact of speed will be quite limited due to that (it just speeds up Dictionary>#at:) The alternative would be to inline #at:ifAbsent: This inlining, due to the existing subclasses, leads to quite some needed refactorings, and has the same problem of being a solution for this problem in this one place. The real solution in the long term is a JIT that removes blocks like that by inlining automatically for the code it executes, while not changing the image level code at all. This would then solve this for all similar cases everywhere all at once. But the nice aspect of the hack is: it is local (touches just this one method), gives us some speedup now and will be trivially removable when we deploy a better solution in the future. But the code is quite ugly and indeed relies on reflection... which maybe for Dictionary>>#at: is not that nice (e.g. if you want to create a minimal image without reflection) But it is save to add this to your own image, it works in Pharo11 and Pharo12 and I guess even in Pharo10 (not tested there). Marcus

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This week (20/2023) on the Pharo Issue Tracker.
by Marcus Denker May 19, 2023

May 19, 2023

This week, we continued the work on Pharo12. #Fixes - Drop use of Paragraph from #drawOn: in ToggleWithSymbolMenuItemShortcut to fix menu item alignment #13764 https://github.com/pharo-project/pharo/pull/13764 - 13657-With-CleanBlocks-enabled-tests-fail-when-trying-to-Fuel-out-stack #13763 https://github.com/pharo-project/pharo/pull/13763 - Adjust icon and key text spacing in ToggleMenuItemMorph #13722 https://github.com/pharo-project/pharo/pull/13722 # Features - add object to represent the Native Window #13566 https://github.com/pharo-project/pharo/pull/13566 - Add menu items âIndentâ and âOutdentâ to the menu built through #menuOn: in RubSmalltalkCodeMode #13714 https://github.com/pharo-project/pharo/pull/13714 # Compiler - Remove Object bindingOf: and hasBindingOf: #13736 https://github.com/pharo-project/pharo/pull/13736 https://github.com/pharo-spec/Spec/pull/1392 - Compiler: remove #lookupVar:declare: #13737 https://github.com/pharo-project/pharo/pull/13737 https://github.com/pharo-spec/Spec/pull/1390 - 13723-Binding-for-variable-in-Playground-is-nil-after-assigning-a-number-to-it #13739 https://github.com/pharo-project/pharo/pull/13739 # Protocols - Method announcements should use real protocols #13730 https://github.com/pharo-project/pharo/pull/13730 - Clean the way to get the selectors in a protocol #13759 https://github.com/pharo-project/pharo/pull/13759 - Inline protocol removal from ClassOrganization #13753 https://github.com/pharo-project/pharo/pull/13753 - Diver cleanings around protocols #13749 https://github.com/pharo-project/pharo/pull/13749 - Inline ClassOrganization>>#removeElement: in ClassDescription #13748 https://github.com/pharo-project/pharo/pull/13748 - Implement ClassDescription>>#protocolNameOfSelector: #13728 https://github.com/pharo-project/pharo/pull/13728 - Move #protocolOfSelector: to ClassDescription #13711 https://github.com/pharo-project/pharo/pull/13711 - Improve removal of protocols and add tests #13692 https://github.com/pharo-project/pharo/pull/13692 # Refactoring Engine - Refactoring RBRefactoringWarning and RBRefactoringError #13367 https://github.com/pharo-project/pharo/pull/13367 # Cleanup - Update 01-loadMetacello.st: MetacelloPharoCommonPlatform #13762 https://github.com/pharo-project/pharo/pull/13762 - update-dependencies #13754 https://github.com/pharo-project/pharo/pull/13754 - 10069-Review-NullTextStyler #13752 https://github.com/pharo-project/pharo/pull/13752 - 12444-cleanup-todo-from-testClassSideInitializeMethodNeedsToBeInClassInitializationProtocol #13750 https://github.com/pharo-project/pharo/pull/13750 - Cleanup-MetacelloPharoPlatform #13738 https://github.com/pharo-project/pharo/pull/13738 https://github.com/pharo-project/pharo/pull/13747 https://github.com/pharo-project/pharo/pull/13716 - Move-isObservableSlot #13745 https://github.com/pharo-project/pharo/pull/13745 https://github.com/pharo-spec/Spec/pull/1393 - Add class comments to mocks #13743 https://github.com/pharo-project/pharo/pull/13743 - Class-Deprecate-classComment #13744 https://github.com/pharo-project/pharo/pull/13744 - Cleanup TheManifestBuilder #13742 https://github.com/pharo-project/pharo/pull/13742 - finally remove AbstractTool #13715 https://github.com/pharo-project/pharo/pull/13715 https://github.com/pharo-spec/NewTools/pull/523 - Remove dead code in session manager #13729 https://github.com/pharo-project/pharo/pull/13729 - Fix deprecated call #13710 https://github.com/pharo-project/pharo/pull/13710 - extract return from ifNilifNotNil in ChangeSorterModel #516 https://github.com/pharo-spec/NewTools/pull/516 - Do not listen to method recategorization in MessageBrowser #524 https://github.com/pharo-spec/NewTools/pull/524

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This week (19/2023) on the Pharo Issue Tracker
by Marcus Denker May 15, 2023

May 15, 2023

We released Pharo11 this week! see https://www.pharo.org/news/pharo11-released.html # Pharo 11 - Fix welcomebrowser version #13691 https://github.com/pharo-project/pharo/pull/13691 - Backport fixe #13663: Enabling the setting âShow lines numbers for all browsers #13665 https://github.com/pharo-project/pharo/pull/13665 - fix iceberg version for Pharo 11 #13655 https://github.com/pharo-project/pharo/pull/13655 - fix a bug with cmd+g usage #517 https://github.com/pharo-spec/NewTools/pull/517 - change spotter selection paste default #519 https://github.com/pharo-spec/NewTools/pull/519 # Pharo 12 ## Fixes - Improve some error logging #13689 https://github.com/pharo-project/pharo/pull/13689 - Enabling the setting âShow lines numbers for all browsersâ only shows line numbers for the first method selected in a class #13663 https://github.com/pharo-project/pharo/issues/13663 ## Variables - Allow-Slots-Shadow-PseudoVariables #13704 https://github.com/pharo-project/pharo/pull/13704 - Simplify ReservedVariable: #styleNameIn and remove #nameIsReserved: #13701 https://github.com/pharo-project/pharo/pull/13701 - ReservedVariable: No need for Singleton #13688 https://github.com/pharo-project/pharo/pull/13688 - Added thisProcess pseudovariable using existing bytecode. #13661 https://github.com/pharo-project/pharo/pull/13661 ## SystemOrganizer / RPackage - Remove dead code in RPackageOrganizer default instance #13660 https://github.com/pharo-project/pharo/pull/13660 - Reduces the references to RPackageOrganizer class>>default #13666 https://github.com/pharo-project/pharo/pull/13666 - Move system organizer to RPackage and remove references #13677 https://github.com/pharo-project/pharo/pull/13677 - Remove SystemOrganizer #13690 https://github.com/pharo-project/pharo/pull/13690 - Use Smalltalk organization in DependencyAnalyzer #13671 https://github.com/pharo-project/pharo/pull/13671 ## Protocols / Categories - Do not classify silently methods #13650 https://github.com/pharo-project/pharo/pull/13650 - Start protocol announcements testing + add feature to Announcer #13649 https://github.com/pharo-project/pharo/pull/13649 - Deprecate ProtocolRenamed #13659 https://github.com/pharo-project/pharo/pull/13659 - Small cleanup on protocol cleaning #13642 https://github.com/pharo-project/pharo/pull/13642 - Rename Protocol class>>#name: into #named: #13670 https://github.com/pharo-project/pharo/pull/13670 - Use real protocol in recategorization mecanism #13669 https://github.com/pharo-project/pharo/pull/13669 - Introduce ClassDescription>>#protocolNames and start using it #13658 https://github.com/pharo-project/pharo/pull/13658 - Add some tests on protocol announcements #13706 https://github.com/pharo-project/pharo/pull/13706 - Removal of nonexisting protocol should not announce anything #13702 https://github.com/pharo-project/pharo/pull/13702 ## Code Completion - Completion autoclose menu #13647 https://github.com/pharo-project/pharo/pull/13647 - Completion: improve completion on super #13679 https://github.com/pharo-project/pharo/pull/13679 - Completion: replacement put caret at the right place #13683 https://github.com/pharo-project/pharo/pull/13683 - Completion mini fixes #13696 https://github.com/pharo-project/pharo/pull/13696 - Basic type analysis for better completion #13687 https://github.com/pharo-project/pharo/pull/13687 - More type analysis #13697 https://github.com/pharo-project/pharo/pull/13697 - CompletionEngine do not automatically open empty completion menus #13705 https://github.com/pharo-project/pharo/pull/13705 - NECPreferences remove leftover of captureNavigationKeys #13703 https://github.com/pharo-project/pharo/pull/13703 - Completion: better update #13700 https://github.com/pharo-project/pharo/pull/13700 - Completion browse with Ctrl-B #13699 https://github.com/pharo-project/pharo/pull/13699 ## Cleanups - Clean some code using better condition branches #13668 https://github.com/pharo-project/pharo/pull/13668 - Remove some duplication in image cleaner #13676 https://github.com/pharo-project/pharo/pull/13676 - Message: rename ivar "args" to "arguments #13654 https://github.com/pharo-project/pharo/pull/13654 - Cleanup: Metacello-Platform #13682 https://github.com/pharo-project/pharo/pull/13682 - remove MetacelloPharo30Platform from 01-loadMetacello.st #13684 https://github.com/pharo-project/pharo/pull/13684 - Clean monticello class definition management #13680 https://github.com/pharo-project/pharo/pull/13680

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[ANN] Pharo 11 Released !
by Esteban Lorenzano May 12, 2023

May 12, 2023

Dear Pharo users and dynamic language lovers: We have released Pharo (https://pharo.org/) version 11! What is Pharo? Pharo is a pure object-oriented programming language and a powerful environment focused on simplicity and immediate feedback. Simple & powerful language: No constructors, no types declaration, no interfaces, no primitive types. Yet a powerful and elegant language with a full syntax fitting in one postcard! Pharo is objects and messages all the way down. Live, immersive environment: Immediate feedback at any moment of your development: Developing, testing, debugging. Even in production environments, you will never be stuck in compiling and deploying steps again! Amazing debugging experience: Pharo environment includes a debugger unlike anything you've seen before. It allows you to step through code, restart the execution of methods, create methods on the fly, and much more! Pharo is yours: Pharo is made by an incredible community, with more than 100 contributors for the last revision of the platform and hundreds of people constantly contributing with frameworks and libraries. Fully open-source: Pharo full stack is released under MIT (https://opensource.org/licenses/MIT) License and available on GitHub (https://github.com/pharo-project/pharo) ... more on the Pharo Features page (http://www.pharo.org/features) In this iteration of Pharo, we continue working on our objectives of improvement, clean-up and modularization. Also, we included a number of usability and speed improvements. A complete list of changes and improvements is available in our Changelog (https://github.com/pharo-project/pharo-changelogs/blob/master/Pharo110Chang…) Some highlights of this amazing version: Highlights Tools Iceberg (the git client/VCS control tool) has received a lot of tweaks and fixes to work better with GitHub and other Git services. Our debugger now incorporates lots of tweaks and notably the capability of adding bindings in the context interaction model. The is a new implementation of rewrite tools and improved refactoring support. There is a new tool: The Document Browser, which presents Microdown (markdown compatible) documents placed on the web or locally. New Tools presented in Calypso (the System Browser) and additional extended Inspectors. All versions of NewTools, Spec, Roassal and Microdown have been updated with their respective bug fixes and improvements. System Extended Full Blocks and Constant Clock closures support. Additional Inlining and optimizations Bug Fixes and Clean up. Ephemeron Finalization support. Virtual machine Ephemerons Production Ready. Initial support for Single-Instruction Multiple-Data (SIMD). Third-Party Dependency Update (Newer versions, Graphic Libraries using Hardware Acceleration). Clean Ups: Remove lots of old code, notably old experiments, and dead code. Development Effort This new version is the result of 1412 Pull Requests integrated just in the Pharo repository. We have closed 972 issues and received contributions from more than 70 different contributors. We have also a lot of work in the separate projects that are included in each Pharo release: http://github.com/pharo-spec/NewTools (https://github.com/pharo-spec/NewTools) http://github.com/pharo-spec/NewTools-DocumentBrowser (https://github.com/pharo-spec/NewTools-DocumentBrowser) http://github.com/pharo-spec/Spec (https://github.com/pharo-spec/Spec) http://github.com/pharo-vcs/Iceberg (https://github.com/pharo-vcs/Iceberg) http://github.com/ObjectProfile/Roassal3 (https://github.com/ObjectProfile/Roassal3) http://github.com/pillar-markup/Microdown (https://github.com/pillar-markup/Microdown) http://github.com/pillar-markup/BeautifulComments (https://github.com/pillar-markup/BeautifulComments) http://github.com/pharo-project/pharo-vm (https://github.com/pharo-project/pharo-vm) Contributors We always say Pharo is yours. It is yours because we made it for you, but most importantly because it is made by the invaluable contributions of our great community (yourself). A large community of people from all around the world contributed to Pharo 11.0 by making pull requests, reporting bugs, participating in discussion threads, providing feedback, and a lot of helpful tasks in all our community channels. Thank you all for your contributions. The Pharo Team Discover Pharo: https://pharo.org/features Try Pharo: http://pharo.org/download Learn Pharo: http://pharo.org/documentation

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Pharo contribution Jenkins end of service
by Christophe Demarey May 12, 2023

May 12, 2023

Hi all, Some years ago, we provided a Jenkins instance to check the health / quality of projects that are not in Pharo core but important for the community: https://ci.inria.fr/pharo-contribution/ <https://ci.inria.fr/pharo-contribution/> Since, we moved to GitHub and GitHub actions are mainly used to achieve the same goal. Therefore there is no more reason to keep this service. Thatâs why we decided to stop the Pharo contribution Jenkins on 12th June 2023. If you need to save some data (job artefacts, job setup), let us know. The server is now up but it has not been updated since a while and can stop working from time to time. On 12th June 2023, we will shutdown the server and all data will be removed. The Pharo team.

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Pharo VM Release - v10.0.5
by tesonep＠gmail.com May 6, 2023

May 6, 2023

Hello, we have released a new version of the Pharo VM for Pharo 11. This VM is accessible right now from Zero-Conf, updating it in the Pharo Launcher or using the usual downloads (as described in pharo.org/download) Also, OBS packages are ready to be updated using your distribution package manager. This is the new VM that will be stable for Pharo 11 release and Pharo 12 alpha, it is also compatible with Pharo 10 images but it is not the default for Pharo 10. Changelog * Testing scavenger tenuring by @PalumboN in https://github.com/pharo-project/pharo-vm/pull/588 * Deleting Pharo image from the VM repo by @jordanmontt in https://github.com/pharo-project/pharo-vm/pull/591 * Cleaning Up Third Party Libraries by @tesonep in https://github.com/pharo-project/pharo-vm/pull/581 **Full Changelog**: https://github.com/pharo-project/pharo-vm/compare/v10.0.4...v10.0.5 Thanks a lot, and any doubt please let us know. Cheers, Pablo on behalf of the whole Pharo team. -- Pablo Tesone. tesonep(a)gmail.com

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