- Hugs-Bugs - Haskell.org

Hugs for Macintosh 2001/11/19
by Hans Aberg 19 Nov '01

19 Nov '01

I made an update to the version that I and Pablo Azero used to develop; it is at http://www.matematik.su.se/~haberg/Computer/Hugs98Feb2001MacBin20011119.sit The sources I used to compile these, using Metrowerks CodeWarrior Pro 5 are at http://www.matematik.su.se/~haberg/Computer/Hugs98Feb2001MacSrc20011119.sit If somebody is willing to put this stuff up elsewhere, please let me know. It differs from the 2001/10/12 version in that the :e command now works as it used to do in the Mac versions building on the kernels before the hugs98-Feb2001 kernel. (I merely removed the extra quotes that this kernel inserts in machdep.c, startEdit(); see the Mac sources.) Hans Aberg * Email: Hans Aberg <mailto:haberg@member.ams.org> * Home Page: <http://www.matematik.su.se/~haberg/> * AMS member listing: <http://www.ams.org/cml/>

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Re: Hugs editing on Mac.
by Hans Aberg 19 Nov '01

19 Nov '01

At 12:38 +0100 2001/11/19, Julio Rubio Garcia wrote: >> Actually, it turns out to depend on a couple of bugs in the hugs98-Feb2001 >> sources... ... >thank you for the info. In fact, I think I can survive without the :edit >(it is enough to maintain the editor working during the session with Hugs). >Anyway, if you (you or another) fix these bugs, I will be happy of knowing >about it. I did fix it (see other post). Also, note the neat Heap Profiler, which I figure would be great for a students course. Together with hp2ps, it can be used to debug Haskell code (see the Mac Readme file for an example). Hans Aberg

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Re: Hugs editing on Mac.
by Hans Aberg 19 Nov '01

19 Nov '01

At 08:58 +0100 2001/11/19, Julio Rubio Garcia wrote: >On the other hand I have just tried the :edit stuff from >http://www.matematik.su.se/~haberg/Computer/Hugs98Feb2001MacBin20011012.sit > >The trial was made in an older OS version (MacOS E1-8.6). I have >not a bomb, but a message "Warning: Editor terminated abnormally". >I will do the trial on the 9.1 OS too. I'll inform you on the results. This means that the command launching the file for some reason cannot find that particular pathname on the computer. Actually, it turns out to depend on a couple of bugs in the hugs98-Feb2001 sources, in machdep.c, startEdit(), which contains an erroneous line #if HUGS_FOR_WINDOWS || 1 always forcing compiling for Windows, plus a couple of lines a little further down else if (*he=='s' && (size_t)n>(strlen(nm)+2)) { /* Protect the filename by putting quotes around it */ *ec++='\"'; assuming that filenames can always be enclosed in quotes, which does not work with the MacOS function launching the file that I once wrote. Not difficult to fix, but I am not actively developing this one now, so I am not sure if I will fix this one. Hans Aberg

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Hugs editing on Mac.
by Julio Rubio Garcia 19 Nov '01

19 Nov '01

Dear colleagues, I'm planning to teach a course about Algorithms and Data Structures, by using Hugs. My students have MacIntosh computers (o.s. Mac OS E1-9.1). When I try to use the -E option (with :set or in the Preferences file), I obtain a nice little bomb (rather the equivalent to a bomb in this modern O.S.). What's the problem ? Thank you in advance for your answer. Sincerely yours, JULIO.

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Re: Hugs editing on Mac.
by Hans Aberg 16 Nov '01

16 Nov '01

On the version that Pablo and I made http://www.matematik.su.se/~haberg/Computer/Hugs98Feb2001MacBin20011012.sit if the -E string is empty, it launches the file to the MacOS creator program of the file. (E.g., an BBEdit file will be launched to BBEdit, etc.) So normally, you should not change it. (I do not remember exactly what happens when you change it -- it probably tries to launch that name as well, but not the file to that program name.) Hans Aberg

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recip incorrect for 0 % 1
by Ian Lynagh 14 Nov '01

14 Nov '01

Hi guys, hugs has recip (x:%y) = if x < 0 then (-y) :% (-x) else y :% x which is not correct when x == 0. Thanks Ian

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[igloo@earth.li: Strictness of library implementations]
by Ian Lynagh 14 Nov '01

14 Nov '01

Forwarded as I believe it is a hugs bug ----- Forwarded message from Ian Lynagh <igloo(a)earth.li> ----- Subject: Strictness of library implementations To: haskell(a)haskell.org From: Ian Lynagh <igloo(a)earth.li> Date: Sun, 11 Nov 2001 19:37:43 +0000 Delivered-To: haskell(a)haskell.org Errors-To: haskell-admin(a)haskell.org X-Mailman-Version: 2.0.3 The library report says The code found here is a specification, rather than an implementation. Implementations may choose more efficient versions of these functions. However, all properties of these specifications must be preserved, including strictness properties. Ratio then defines data (Integral a) => Ratio a = !a :% !a which GHC seems to implement as specified, but nhc and hugs seem to use data (Integral a) => Ratio a = a :% a Does this not have different strictness properties? Thanks Ian _______________________________________________ Haskell mailing list Haskell(a)haskell.org http://www.haskell.org/mailman/listinfo/haskell ----- End forwarded message -----

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Problem with Win XP
by Klaus Faßbender 14 Nov '01

14 Nov '01

Hi! I used hugs with Win98 and there were no problems. But since I updated to WinXP I get this Error-Message (see the file below). I need it for studying Informatics. We´re learning Haskell and our Prof explains it with Hugs as compiler. So I hope you can help me with my problem. Klaus Faßbender

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(no subject)
by Andrew Mishchenko 14 Nov '01

14 Nov '01

Hi, there. Try something like :set +p%s%s and hugs is dead :) Of course I know what's wrong, but I can't undo anything... Druxa.

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Win 1 of 100 Naked Music NYC CDs
by OM Records 13 Nov '01

13 Nov '01

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