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Re (2): The SVN repository for A2.
by peter＠easthope.ca 31 May '21

31 May '21

peter at easthope.ca peter at easthope.ca Mon May 31 21:26:54 CEST 2021 > That is the system (Debian) locale or SVN locale? Subversion has no locales that I can see. Should have looked before asking. In fact the locales package was absent. After installing it, setting en_US.UTF-8 and rebooting, the A2 repository updated successfully. For the documentation, another potential snag to mention. Thanks, ... P.L. -- tel: +1 604 670 0140 Bcc: peter at easthope. ca

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Re (2): The SVN repository for A2.
by peter＠easthope.ca 31 May '21

31 May '21

Michael, Thanks for the detailed explanation. > Check your locale settings and use an UTF-8 locale if possible. So > something like en_US.UTF-8 instead of en_US. Depending on your distro > you may have to run locale-gen or similar to generate it. That is the system (Debian) locale or SVN locale? Thx, ... P. -- tel: +1 604 670 0140 Bcc: peter at easthope. ca

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The SVN repository for A2.
by peter＠easthope.ca 31 May '21

31 May '21

Hi, An attempt to clone the SVN repository for A2 appears to have not completed properly. "svn cleanup" gives this result. peter@joule:/home/peter/a2$ svn cleanup . svn: E155009: Failed to run the WC DB work queue associated with '/home/peter/a2 ', work item 15168 (file-install 44 UnixAos/DarwinA2 Installer/A2 64.app/Icon{U+ F00D} 1 0 1 1) svn: E000022: Can't convert string from 'UTF-8' to native encoding: svn: E000022: /home/peter/a2/UnixAos/DarwinA2 Installer/A2 64.app/Icon{U+F00D} I guess the resolution is simple enough but I'm out of my depth. Ideas? Tips? Thx, ... P.L. -- tel: +1 604 670 0140 Bcc: peter at easthope. ca

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Usenet group comp.lang.oberon is no longer accessible
by Chris Burrows 30 May '21

30 May '21

The Usenet group 'comp.lang.oberon' which I normally access through Google Groups has recently become unavailable with the message: "Banned content warning: comp.lang.oberon has been identified as containing spam, malware, or other malicious content." https://groups.google.com/g/comp.lang.oberon While it is true that spammers occasionally attacked this group (I usually reported such attacks - maybe I shouldn't have?) there was about 30 years' worth of historically significant discussions about Oberon contained in the archived messages so it is an extreme case of 'throwing the baby out with the bathwater'. I reported the access problem to Google Groups about a week ago but haven't heard back yet. Does anybody know how to restore access to this group? If you are unfamiliar with what I'm talking about, see the similar Usenet discussion group comp.lang.modula2 which is still active and accessible: https://groups.google.com/g/comp.lang.modula2 Thanks, Chris Burrows CFB Software https://www.astrobe.com

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PO 2013 allows one to "override" predefined procedures and functions
by Andreas Pirklbauer 29 May '21

29 May '21

It depends on the system: a) In PO2013/Oberon-07, the scope rules in ch.4 of the language report state that “the scope extends textually from the point of the declaration to the end of the block (procedure or module) to which the declaration belongs and hence to which the object is local. example b) In A2/Active Oberon, the scope rules in ch.3 of its language report state that “the scope of an item x is the smallest (w.r.t. nesting) block (module, procedure, record or object) in which it is declared. The item is local to this scope. Scope rules are: 1. No identifier may denote more than one item within a given scope. 2. An item may be directly referenced within its scope only. 3. The order of declaration within a scope does not affect the meaning of a program. By “should?” I meant “what is a sensible choice?”. I can certainly live with both definitions a) and b) above. To the best of my knowledge, definition a) has been used in most implementations since Pascal days (as it is easy to implement in single pass compilers), but b) appears equally valid. -ap > Is there a specific part of the Oberon Language report that prompts > you to ask this question? If not, why should it not be allowed? > > Regards, > Chris Burrows > CFB Software > https://www.astrobe.com > > > > On Sat, May 29, 2021 at 12:23 PM Andreas Pirklbauer wrote: > > > > By contrast, should the following be allowed? > > > > MODULE M; > > > > VAR ch: CHAR; > > CHAR: INTEGER; (*this is allowed in PO 2013*) > > > > BEGIN CHAR := 1 > > END M. > > > > -ap > >

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PO 2013 allows one to "override" predefined procedures and functions
by Andreas Pirklbauer 29 May '21

29 May '21

By contrast, should the following be allowed? MODULE M; VAR ch: CHAR; CHAR: INTEGER; (*this is allowed in PO 2013*) BEGIN CHAR := 1 END M. -ap

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Historical perspective; was Re (2): EE, CE, CS buildings on the ETH campus.
by peter＠easthope.ca 26 May '21

26 May '21

>From David Lightfoot dlightfoot at ........ac.uk Mon May 24 12:22:20 CEST 2021 > Niklaus Wirth's Institute of Computer Systems was on the 4th floor of the > Rechenzentrum, Clausiusstrasse 55; this was the location at the time of the > development of Oberon. > There is a photograph at: > https://www.tg.ethz.ch/de/kontakt/standort/ The story now includes a good color photo. https://en.wikibooks.org/wiki/Oberon#Historical_Perspective David, the details certainly make the story more vivid but if you prefer that your message is not cited in the footnote just let me know; or remove the citation. Thx, ... P.L. -- tel: +1 604 670 0140 Bcc: peter at easthope. ca

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Re (2): Re (2): EE, CE, CS buildings on the ETH campus.
by peter＠easthope.ca 24 May '21

24 May '21

From: David Lightfoot <dlightfoot(a)brookes.ac.uk> Date: Mon, 24 May 2021 11:22:20 +0100 > Niklaus Wirth's Institute of Computer Systems was on the 4th floor of the > Rechenzentrum, Clausiusstrasse 55; this was the location at the time of the > development of Oberon. Thanks David. Certainly that helps. Working on the photo. https://commons.wikimedia.org/wiki/Commons:Village_pump#ETHZ_Rechenzentrum,… ... P.L. -- tel: +1 604 670 0140 Bcc: peter at easthope. ca

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Re (2): EE, CE, CS buildings on the ETH campus.
by peter＠easthope.ca 24 May '21

24 May '21

From: Till Oliver Knoll <till.oliver.knoll(a)gmail.com> Date: Sat, 22 May 2021 11:07:56 +0200 > So if you ask me: use any nice picture of the ETH Hauptgeb=C3=A4ude (HG)! > No one will recognise the IFW - and again: I am not saying that Professor > N. Wirth and Professor J. Gutknecht were actually already in that > building when starting working on Oberon! I just can't tell. https://en.wikibooks.org/wiki/Oberon#Historical_Perspective Another vantage point might give a better view, including the Rechenzentrum and IFW. The Oberstrass neighbourhood? https://www.openstreetmap.org/#map=16/47.3839/8.5468 That's the best I can do at the present. If someone can improve it, certainly go ahead. Incidentally what is abbreviated by CAB? Thanks to all who have replied, ... P.L. -- tel: +1 604 670 0140 Bcc: peter at easthope. ca

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Re (2): EE, CE, CS buildings on the ETH campus.
by peter＠easthope.ca 22 May '21

22 May '21

> So if you ask me: use any nice picture of the ETH Hauptgeb=C3=A4ude (HG)!= > No one will recognise the IFW - and again: I am not saying that Professor > N. Wirth and Professor J. Gutknecht were actually already in that > building when starting working on Oberon! I just can't tell. Thanks Oliver. Generality avoids false information. Will have another look at the wide views available. https://commons.wikimedia.org/wiki/Category:ETH_Zurich ... P. -- tel: +1 604 670 0140 Bcc: peter at easthope. ca

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