armedbear-ticket March 2011

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[armedbear-ticket] [armedbear] #65: UTF-32 strings support
by armedbear 11 Mar '13

11 Mar '13

#65: UTF-32 strings support ------------------------+--------------------------------------------------- Reporter: ehuelsmann | Owner: somebody Type: defect | Status: new Priority: major | Milestone: Component: other | Version: Keywords: | ------------------------+--------------------------------------------------- ABCL uses Java char[]s to represent its strings. However, the char type can only represent values in the BMP (Basic Multilingual Plane), because only the BMP can be represented using 16 bits. For supplementary characters (all Unicode chars outside the BMP), it uses a pair of surrogate characters (UTF-16). Common Lisp programs don't expect this and need strings to be represented using complete characters. -- Ticket URL: <http://trac.common-lisp.net/armedbear/ticket/65> armedbear <http://common-lisp.net/project/armedbear> armedbear

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[armedbear-ticket] [armedbear] #133: Mixed case inconsistency in TRANSLATE-LOGICAL-PATHNAMES
by armedbear 09 Dec '12

09 Dec '12

#133: Mixed case inconsistency in TRANSLATE-LOGICAL-PATHNAMES -------------------------+-------------------------------------------------- Reporter: mevenson | Owner: ehuelsmann Type: defect | Status: new Priority: major | Milestone: 0.25 Component: interpreter | Version: 0.24 Keywords: | -------------------------+-------------------------------------------------- Jonathan Boca reports {{{ As the following code and transcript demonstrate, translate-logical-pathname appears to be downcasing paths inconsistently: ;;; test.cl (setf (logical-pathname-translations "foo") '(("foo:bar;*.lisp" "/FooRoot/bar/*.lisp") ("foo:*.lisp" "/FooRoot/*.lisp"))) ;;; In the following pathname translation, the entire path is downcased (pprint (translate-logical-pathname "foo:bar;foobar.lisp")) ;;; In each of the next two, the entire path EXCEPT for the host is downcased -- ;;; the host is unchanged (pprint (translate-logical-pathname "foo:foobar.lisp")) (pprint (translate-logical-pathname "foo:Foobar.lisp")) --- Armed Bear Common Lisp 0.24.0 Java 1.6.0_22 Apple Inc. Java HotSpot(TM) Client VM Low-level initialization completed in 0.478 seconds. Startup completed in 1.386 seconds. Type ":help" for a list of available commands. CL-USER(1): (load "test.cl") #P"/fooroot/bar/foobar.lisp" #P"/FooRoot/foobar.lisp" #P"/FooRoot/foobar.lisp" T CL-USER(2): --- SBCL and CLISP both produce the following output for the above code: #P"/FooRoot/bar/foobar.lisp" #P"/FooRoot/foobar.lisp" #P"/FooRoot/foobar.lisp" Allegro's ALISP and MLISP both produce the following: #P"/FooRoot/bar/foobar.lisp" #P"/FooRoot/foobar.lisp" #P"/FooRoot/Foobar.lisp" }}} -- Ticket URL: <http://trac.common-lisp.net/armedbear/ticket/133> armedbear <http://common-lisp.net/project/armedbear> armedbear

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[armedbear-ticket] [armedbear] #132: Inconsistent use of :case :common for pathnames
by armedbear 09 Dec '12

09 Dec '12

#132: Inconsistent use of :case :common for pathnames -------------------------+-------------------------------------------------- Reporter: mevenson | Owner: ehuelsmann Type: defect | Status: new Priority: major | Milestone: 0.25 Component: interpreter | Version: 0.24 Keywords: | -------------------------+-------------------------------------------------- Pascal Bourguignon notes: {{{ CLHS says: 19.2.2.1.2.2 Common Case in Pathname Components For the functions in Figure 19-2, a value of :common for the :case argument that these functions should receive and yield strings in component values according to the following conventions: * All uppercase means to use a file system's customary case. * All lowercase means to use the opposite of the customary case. * Mixed case represents itself. Note that these conventions have been chosen in such a way that translation from :local to :common and back to :local is information-preserving. [pjb@kuiper :0.0 lisp]$ abcl Armed Bear Common Lisp 0.20.0 Java 1.6.0_22 Sun Microsystems Inc. Java HotSpot(TM) Server VM Low-level initialization completed in 0.265 seconds. Startup completed in 0.718 seconds. Type ":help" for a list of available commands. CL-USER(1): (make-pathname :name "TEST" :type "LISP" :case :common) #P"TEST.LISP" CL-USER(2): (namestring (make-pathname :name "TEST" :type "LISP" :case :common)) "TEST.LISP" I'm on a linux system on a ext3 file system. The customary case is lower case (case significant on this particular file system, but 99.999% of the files on unix are lower case). Therefore I would expect to get #P"test.lisp" Notice that: (make-pathname :name "test" :type "lisp" :case :common) should produce #P"TEST.LISP" and that: (make-pathname :name "Test" :type "Lisp" :case :common) should produce #P"Test.Lisp" }}} {{{ Mark Evenson writes: > > On 11/7/10 5:02 AM, Pascal J. Bourguignon wrote: >> >> >> >> CLHS says: >> >> >> >> 19.2.2.1.2.2 Common Case in Pathname Components >> >> >> >> For the functions in Figure 19-2, a value of :common for the :case >> >> argument that these functions should receive and yield strings in >> >> component values according to the following conventions: >> >> >> >> * All uppercase means to use a file system's customary case. >> >> * All lowercase means to use the opposite of the customary case. >> >> * Mixed case represents itself. >> >> >> >> Note that these conventions have been chosen in such a way that >> >> translation from :local to :common and back to :local is >> >> information-preserving. > > > > What an odd corner of the CLHS, littered with the bones of extinct > > filesystems! This behavior that seems like it would produce > > unpleasantries much more than it would help anyone, violating the > > principle of least surprise. But we claim that ABCL will be ANSI first > > and foremost, so I guess we have to pay attention here… I should mention that I use routinely logical pathnames, and they work very well, on all implementations that conformantly implement them. That means that all my logical pathnames are always upcase letters, and no special symbols (apart from an occasional dash). I understand that using implementation dependant syntax (special characters, lower-case, mixed-case) in logical pathnames can lead to surprises, but I avoid them. Now, it's not a question of extinct file systems. You still have to deal with at least two different major syntaxes: POSIX and MS-Windows/MS-DOS. I just cannot use in programs that will have to run on both Linux or MacOSX and MS-Windows physical pathname literals, because they don't use the same syntax. On the other hand, #P"HOME:SRC;LISP;EXAMPLE.LISP" can be translated to either #P"C:\\Users Files\\Pascal\\src\\lisp\\example.lisp" or #P"/home/pjb/src/lisp/example.lisp" portably on these targets. The point for an implementation is to know what it's targets are, and to implement proper behavior when translating and merging logical pathnames. You must be careful when merging logical pathnames with physical pathnames, notably when it's done in make-pathname: the :case parameter must have effect only on the new strings, not on the :defaults parameter. > > I suppose there is no definition of "customary case", huh? Indeed. > > Pascal suggests a notion of filesystem statistics ("99.999% of files > > are lowercase") but for a developer dealing with lots of Java files > > this isn't very releavant. Does Java provide its own file system, or does it map to the host file system? Notice that logical pathnames don't have to be able to represent all the physical pathnames, without an explicit translation. If you have a file system that is case sensitive, then you may write: (setf (logical-pathname-translations "APP") (list (list #P"APP:EXAMPLE;FILE.LISP" #P"/MyApp/Example/File.lisp") (list #P"APP:EXAMPLE;ANOTHER-FILE.LISP" #P"/MyApp/Example/AnotherFile.lisp") (list #P"APP:EXAMPLE;*.DATA" #P"/MyApp/Example/*.appdata") (list #P"APP:EXAMPLE;SOME-MODULE.*" #P"/MyApp/Example/SomeBigModule.*") (list #P"APP:APP.CONFIGURATION" #P"/MyApp/.config") (list #P"APP:CUSTOMARY;**;*" #P"/MyApp;**;*") (list #P"APP:CUSTOMARY;**;*.*" #P"/MyApp;**;*.*"))) to be able to access to files with strange physical names. The question indeed is to decide what is the customary case. You can choose uppercase or you can choose lowercase. This matters only for file systems that are case sensitive, but even file systems that are not case sensitive, such as MS-DOS, have a prefered way to display the names. > > Lacking a more precise definition, I would then advocate that we declare > > lowercase to be the customary case across UNIX, OSX, and Windows for > > ABCL, patching our behavior accordingly. That would be good. > > I thought briefly about advocating Windows to have "uppercase" as its > > customary case, but that is only really true in a DOS world which > > "modern" Windows systems really aren't any more. Yes. > > And although we theoretically run on JVMs on say VMS, if we run into > > such needs, we might devote a user-accessible special variable to > > control the implementation. This is also a good option. }}} -- Ticket URL: <http://trac.common-lisp.net/armedbear/ticket/132> armedbear <http://common-lisp.net/project/armedbear> armedbear

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[armedbear-ticket] [armedbear] #118: Lisp.getUpgradedElementType returns more types than supported by 'make_array.java'
by armedbear 07 Dec '12

07 Dec '12

#118: Lisp.getUpgradedElementType returns more types than supported by 'make_array.java' ------------------------+--------------------------------------------------- Reporter: ehuelsmann | Owner: nobody Type: defect | Status: new Priority: major | Milestone: Component: libraries | Version: Keywords: | ------------------------+--------------------------------------------------- The above leads to possible failure: each upgraded element type has its own associated defaultInitialValue. If the code does not specify the right initial value, NIL is taken, which probably is not a good fit. -- Ticket URL: <http://trac.common-lisp.net/armedbear/ticket/118> armedbear <http://common-lisp.net/project/armedbear> armedbear

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[armedbear-ticket] [armedbear] #130: SLIME under Windows has "extra" CRLF
by armedbear 02 Sep '12

02 Sep '12

#130: SLIME under Windows has "extra" CRLF ----------------------+----------------------------------------------------- Reporter: mevenson | Owner: mevenson Type: defect | Status: new Priority: minor | Milestone: Component: other | Version: Keywords: | ----------------------+----------------------------------------------------- Reported by ehu via #abcl -- Ticket URL: <http://trac.common-lisp.net/armedbear/ticket/130> armedbear <http://common-lisp.net/project/armedbear> armedbear

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[armedbear-ticket] [armedbear] #113: DEFSTRUCT redefinition can crash ABCL on MAKE-FOO
by armedbear 19 Aug '12

19 Aug '12

#113: DEFSTRUCT redefinition can crash ABCL on MAKE-FOO ---------------------+------------------------------------------------------ Reporter: mseddon | Owner: nobody Type: defect | Status: new Priority: minor | Milestone: Component: java | Version: Keywords: | ---------------------+------------------------------------------------------ CL-USER(1): (defstruct foo x y) FOO CL-USER(2): (defstruct foo x y z) FOO CL-USER(3): (make-foo :x 1 :y 2 :z 3) ABCL Debug.assertTrue() assertion failed! java.lang.Error: ABCL Debug.assertTrue() assertion failed! at org.armedbear.lisp.Debug.assertTrue(Debug.java:46) at org.armedbear.lisp.StructureObject.writeToString(StructureObject.java :483) Multiple DEFSTRUCTs do not change the underlying structure class, but seem to cause StructureObject to assert if the new (almost ignored) definition had a different number of slots than the old. For example, while the above example crashes out ABCL, the following example does not: CL-USER(1): (defstruct foo a b c) FOO CL-USER(2): (defstruct foo x y z) FOO CL-USER(3): (make-foo :x 1 :y 2 :z 3) #S(FOO :A 1 :B 2 :C 3) -- Ticket URL: <http://trac.common-lisp.net/armedbear/ticket/113> armedbear <http://common-lisp.net/project/armedbear> armedbear

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[armedbear-ticket] [armedbear] #73: "normalize-type" buffering
by armedbear 08 Aug '12

08 Aug '12

#73: "normalize-type" buffering -------------------------+-------------------------------------------------- Reporter: ehuelsmann | Owner: somebody Type: task | Status: new Priority: major | Milestone: Component: CLOS | Version: Keywords: performance | -------------------------+-------------------------------------------------- Peter Graves points out that with his "canonicalize-type" buffering, he achieved measurable performance gain in XCL. We want to do the same in ABCL. -- Ticket URL: <http://trac.common-lisp.net/armedbear/ticket/73> armedbear <http://common-lisp.net/project/armedbear> armedbear

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[armedbear-ticket] [armedbear] #60: Implement USE-FAST-CALLS properly
by armedbear 29 Jul '12

29 Jul '12

#60: Implement USE-FAST-CALLS properly -------------------------+-------------------------------------------------- Reporter: trittweiler | Owner: ehuelsmann Type: defect | Status: new Priority: minor | Milestone: Component: compiler | Version: Keywords: | -------------------------+-------------------------------------------------- USE-FAST-CALLS is implemented at the moment by flipping an essentially global variable. The proper implementation would be to make turn it into a ABCL-specific declaration, and making sure it affects its lexically enclosing code only. -- Ticket URL: <http://trac.common-lisp.net/armedbear/ticket/60> armedbear <http://common-lisp.net/project/armedbear> armedbear

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[armedbear-ticket] [armedbear] #32: Modify the currently disabled runtime-class.lisp code to not require ASM
by armedbear 28 Jul '12

28 Jul '12

#32: Modify the currently disabled runtime-class.lisp code to not require ASM --------------------------------------------------------------------+------- Reporter: vvoutilainen | Owner: somebody Type: enhancement | Status: new Priority: major | Milestone: Component: component1 | Version: Keywords: jvm bytecode compiler runtime dynamic class generation | --------------------------------------------------------------------+------- It's possible to define classes at runtime, by generating bytecode and loading it from the generated binary data, without ever writing it to a temporary file. runtime-class.lisp does that, but it requires an external bytecode library (ASM). ABCL has all the functionality for this to be done without ASM, so the task is to modify the runtime-class.lisp code so that ASM is no longer required and the code can be taken to be part of the build. -- Ticket URL: <http://127.0.0.1:8000/armedbear/ticket/32> armedbear <http://common-lisp.net/project/armedbear> armedbear

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[armedbear-ticket] [armedbear] #137: CLtL2 environment support
by armedbear 28 Jul '12

28 Jul '12

#137: CLtL2 environment support -------------------------+-------------------------------------------------- Reporter: ehuelsmann | Owner: ehuelsmann Type: enhancement | Status: new Priority: minor | Milestone: Component: compiler | Version: Keywords: | -------------------------+-------------------------------------------------- Cyrus Harmon requests support for [http://www.cs.cmu.edu/Groups/AI/html/cltl/clm/node102.html#SECTION001250000… CLtL2 environment] objects support for his pixel access library, as described in a [http://cyrusharmon.org/blog/display?id=113 recent blog post] on [https://github.com/slyrus/opticl/blob/master/opticl.lisp opticl]. -- Ticket URL: <http://trac.common-lisp.net/armedbear/ticket/137> armedbear <http://common-lisp.net/project/armedbear> armedbear

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armedbear-ticket March 2011