January 2003 - Hugs-Users

Hugs, Mac OS X 10.1.5, and pathnames
by Hamilton Richards 20 Feb '03

20 Feb '03

In OS X, pathnames have two distinct syntaxes. The GUI uses the pre-X syntax, in which a pathname begins with a volume name and the separator is `:', as in Macintosh HD:Users:ham:Documents:whatever.hs In the Darwin (i.e., unix) command-line "underworld", a pathname begins with /Volumes, spaces are escaped with `\', and the separator is `/', as in /Volumes/Macintosh\ HD/Users/ham/Documents/whatever.hs When you drag a file icon onto the command line, Terminal does the right thing-- it converts the pathname from the GUI syntax to the Darwin syntax, and utilities such as more work just as they should. Hugs, however, doesn't do so well. For example, Prelude> :l /Volumes/Macintosh\ HD/Users/ham/Documents/whatever.hs Reading file "/Volumes/Macintosh\": ERROR "/Volumes/Macintosh\" - Unable to open file "/Volumes/Macintosh\" Quoting the pathname changes the problem, but doesn't cure it: Prelude> :l "/Volumes/Macintosh\ HD/Users/ham/Documents/whatever.hs" ERROR - Missing `\' terminating string literal gap Apparently what's confusing Hugs is the `\', because removing it cures the problem: Prelude> :l "/Volumes/Macintosh HD/Users/ham/Documents/whatever.hs" Reading file "/Volumes/Macintosh HD/Users/ham/Documents/whatever.hs": Is this problem unavoidable, or is it just an oversight? Thanks, --Ham -- ------------------------------------------------------------------ Hamilton Richards Department of Computer Sciences Senior Lecturer Mail Code C0500 512-471-9525 The University of Texas at Austin Taylor Hall 5.138 Austin, Texas 78712-1188 ham(a)cs.utexas.edu hrichrds(a)swbell.net ------------------------------------------------------------------

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Re: Using Hugs with Mac
by Hans Aberg 30 Jan '03

30 Jan '03

At 23:59 -0600 2003/01/29, Aeimit Lakdawala wrote: > I have a really old Powerbook and it runs System Software 7.6 . Is it >possible for me to run hugs on this computer. If I can can you also tell >what software I would need to open/extract the installation file. Oops! I forgot to say that if your powerbook has a 68x CPU, nobody was able to port Hugs to that. So then it is better to get hold of a new computer. Hans Aberg

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Using Hugs with Mac
by Aeimit Lakdawala 30 Jan '03

30 Jan '03

Hi, I have a really old Powerbook and it runs System Software 7.6 . Is it possible for me to run hugs on this computer. If I can can you also tell what software I would need to open/extract the installation file. Thanks Aeimit _________________________________________________________________ The new MSN 8: smart spam protection and 2 months FREE* http://join.msn.com/?page=features/junkmail

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instalation on os x.2.3
by Toby Dean 23 Jan '03

23 Jan '03

I downloaded the binaries and libraries for hugs on os x.2 and am not sure how to run the hugs program now? If any help is out there I would greatly appreciate it. thanks

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.hugs_history ???
by Johannes Waldmann 21 Jan '03

21 Jan '03

re: making hugs more convenient to use I'd welcome if `hugs' would write the commands that the user typed into a file (say, $HOME/.hugs_history) that would be read in on the next startup (like `bash' does with .bash_history). The effect is that these lines are then in the readline buffer, and so can be reached when scrolling backwards, or searching. This looks like a small change to make (libreadline already provides the functionality). I think there should be a config switch to enable the feature when compiling hugs, and a runtime flag to disable it if needed. best regards, -- -- Johannes Waldmann ---- http://www.informatik.uni-leipzig.de/~joe/ -- -- joe(a)informatik.uni-leipzig.de -- phone/fax (+49) 341 9732 204/207 --

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Winhugs autoload
by Stephen Milborrow 21 Jan '03

21 Jan '03

I have made a small modification to my winhugs which allows you to load files into winhugs and execute Hugs expressions within the comfort of your editor. The convenience may appear small, but prior to the change, I found the typing/clicking involved in switching windows and reloading my Haskell program into winhugs every time I changed it irritating after the first hundred times! The program mod is simple: while waiting for user input, every half-second winhugs checks to see if the modification time of the file "/Program Files/Hugs98/autoload" changed. If so, winhugs executes the file, just as if the user had typed in the text in the file. Thus a makefile (executed from within your editor) could be /progra~1/hugs98/autoload: foo1.hs foo2.hs foo3.hs echo "foo arg1 arg2" >/progra~1/hugs98/autoload touch /progra~1/hugs98/autoload or more simply, when you want winhugs to execute your program just re-save autoload from within your editor (with the standard Hugs options enabled "i import chasing" and "A Auto load files"). I am one of those people who take an non-mouse EMACS-centered view of the world and like to do everything from within EMACS. But once in a while it is nice to try out things directly in winhugs. With this mod and running EMACS and winhugs side by side, I get the best of both worlds. Invoking EMACS from within winhugs or using runhugs doesn't work as well for me, as a matter of personal taste. I have been using this for some time now but was slightly reluctant to post it to the group because polling a file for inter-process communication is a bit of hack (even though the half-second poll takes negligible time). Also, storing a user-written file in the Hugs98 program directory is poor practice -- but under Windows there seems to be no other obvious place to store the autoload file. I didn't want to add an extra command line flag just to specify the whereabouts of the file. In spite of theses issues, I can say that in practice autoloading is nice to use. One file changed viz. Wintext.c. The diff -u is attached. The source base for the diff was Nov2002. I tested it under Windows 98. I hereby give permission for anyone to do anything they like with the new code. Stephen

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Call for Papers (Volume 2 Number 2, 2003)
by Asian Journal of Information Technology 21 Jan '03

21 Jan '03

Asian Journal of Information Technology As a new journal, Asian Journal of Information Technology (AJIT) QUARTERLY PUBLICATION (ISSN 1682-3915) has a need for high-quality manuscripts. Share your knowledge with Information Technology worldwide by submitting a manuscript to Journal of Information Technology. Our Editorial Board is committed to timely yet rigorous and fair review process. Please discuss Journal of Information Technology with your colleagues outside of your field and encourage them to submit their papers. By contacting your colleagues in other disciplines, you can help Asian Journal of Information Technology, provide the community of Information about Technology practitioners with a truly multi disciplinary forum for ideas and information. THANKS AGAIN for your interest in Journal of Information Technology. We need your help in acquiring new submissions and in spreading the world about the new journal among your colleagues. Submit to: Managing Editor, Asian Journal of Information Technology, Grace Publications, 234-C St. # 7, Al-Masoom Town, Faisalabad-38090 Pakistan Ph. 041+92 +738433 We suggest send your article through e-mail: For quick evaluation send through e-mail: java(a)fsd.comsats.net.pk Printing and Processing Cost for all countries; will be charged in shape of Demand Draft payable to Journal of Information Technology (after vetting of the article (s) by the worthy referee if accepted) US$ 80/- (US$ Eighty only). One copy of the published JIT and 10 reprints will be provided to the Principal author/Corresponding author. Two US$ per extra reprint (if required) Minimum 25 reprints request will be entertained. Printing and Processing Cost only for Pakistan; will be charged in shape of Demand Draft payable to Journal of Information Technology (after vetting of the article (s) by the worthy referee if accepted) Rs. 1200/- (Rs. One thousand and two hundred only). One copy of the published JIT and 10 reprints will be provided to the Principal author/Corresponding author. Sixty Rupee per extra reprint (if required) Minimum 25 reprints request will be entertained. With best personal regards Muhammad Kamran Chairman Grace Publications Network 234-C, St. # 7, Al-Masoom Town, Faisalabad, Pakistan Ph. #: 0092 41 738 433 e-mail: java(a)fsd.comsats.net.pk http://www.gracepublication.org

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Your message to Hugs-Bugs awaits moderator approval
by hugs-bugs-admin＠haskell.org 09 Jan '03

09 Jan '03

Your mail to 'Hugs-Bugs' with the subject A new website Is being held until the list moderator can review it for approval. The reason it is being held: Message body is too big: 247363 bytes but there's a limit of 40 KB Either the message will get posted to the list, or you will receive notification of the moderator's decision.

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by Jitka Mansfeldova 06 Jan '03

06 Jan '03

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04 Jan '03

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