- Hugs-Users - Haskell.org

Print version and quit
by Leif Frenzel 25 Jul '04

25 Jul '04

Hi, is there an option for Hugs to just show a version string and quit immediately? (Could not find anything like that in the manual, and some plausible candidates I tried had not the desired effect.) I am interfacing Hugs from an IDE, and it would be nice if I just could 'ping' the executable a user has named in the Preferences, to find out whether it is there and would run and print the version to the user. Thanks and ciao, Leif

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Re: [Haskell] Availability of Hugs with Unicode support?
by Ross Paterson 15 Jul '04

15 Jul '04

On Wed, Jul 14, 2004 at 04:02:04PM +0100, Graham Klyne wrote: > When can I expect a version of Hugs with Unicode support to be generally > released? Hugs is ready to go on Unix/Linux, but some fixing is required on Windows before release, and there is currently no-one available to do it. Volunteers welcome.

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Problem with Hugs
by Matteo Capelletti 21 May '04

21 May '04

Dear All, I just started using Haskell and Hugs, I work with Linux Mandrake 9.1 and I have a problem with the console: Is there a way to set up Hugs in such a way that I can move the cursor using the arrows, or repeat the last command by up-arrow? I have not been able to do this and it is quite hard to use Hugs without this option, since I always have to write again any command (I found a command $$ to repeat the last, but it's not exactly what I need), I cannot make corrections, since I cannot go back... and so on. I hope someone can help me Thank you very much Matteo

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Re: [HOpenGL] GHC 6.2.1 Binding Completeness
by Sven Panne 05 May '04

05 May '04

[ I'm cross-posting this, perhaps some kind soul has binary snapshots available. ] Yann Morvan wrote: > [...] I recently installed the last version of GHC (6.2.1) that comes > with the new OpenGL binding. I was just starting to port my code to it, > but I have trouble finding some basic functionnalities (like glTexImage2D for > instance). Is that binding incomplete ? Alas, no, the OpenGL binding on the release branch is not complete. > If yes when will it be finished ? If no when will the redbook examples be ported to it ? The story is quite a bit different on the main branch, the binding is almost finished there, you get OpenGL 1.5 plus a few dozen extensions. The only missing bit is currently NURBS, but it's already halfway there. We generally don't merge new features onto the release branch, only bug fixes, hence the difference. Currently there are "official" releases including this, but if you can tell a bit about your intended platform, perhaps somebody else on the GHC/Hugs mailing lists can help (Linux, WinDoze, MacOS X and Solaris reportedly work). I can offer bleeding edge snapshots of Hugs and GHC including the latest and greatest OpenGL/GLUT binding compiled for x86 Linux (SuSE 9.1, don't know if the RPMs work on other platforms). Another option is building GHC and/or Hugs from CVS for yourself, which is not that hard nowadays (at least if you have enough GB and GHz :-), see: http://haskell.org/ghc/docs/latest/html/building/building-guide.html > I am reduced to greping the code of the binding for calls to the C openGL > functions and suspect that I am missing things. Thanks to Haddock, there is no need for grep-ing. I keep the docs on http://haskell.org/HOpenGL/newAPI/ fairly actual, and the GHC packages include similar documentation. Cheers, S.

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Re: Setting Search Path doesn't persist in WinHugs
by Greg Ballinger 05 May '04

05 May '04

AHA, I found the problem. When starting the WinHugs.exe file directly in C:\Program Files\Hugs98 it does use the persisted search path. However when starting it via the shortcuts installed in the Windows Start Menu system it does not. Evidently the shortcut in the menu uses an empty -P option when starting WinHugs. Sigbjorn Finne told me "I'll fix this in the next release, but creating your own shortcuts sounds like the simplest way out." For those unfamiliar with creating Windows shortcuts, an easy way to do this is: 1) navigate to the WinHugs.exe file, 2) right-click, 3) select Send to desktop (Create shortcut). 4) drag or copy the shortcut to wherever you want it. If you wish to set WinHugs command line options in your shortcut 1) right-click on the shortcut after you have created it 2) select Properties 3) Type your selected command line options at the end of target line Example: "C:\Program Files\Hugs98\winhugs.exe" +t will cause WinHugs to display the result and type of each expression entered at the Hugs prompt: Hope this is helpful and not too elementary. --Greg Ballinger

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Setting Search Path doesn't persist in WinHugs
by Greg Ballinger 24 Apr '04

24 Apr '04

I've made many attempts to add a directory to the search path using :set -P using different strings such as -P: {Home}/Haskell and -P;"C:\Documents and Settings\Greg\My Documents\Haskell" All have worked during the current WInHugs session (Yes, I created the Home environment variable). When I look in the HKEY-CURRENT-USER registry, the information is saved in the option string: -s -t -g -G -l -. +q -Q -w -k -o -O +u -I -T -A +R -H +98 -h250000 -p"%s> " -r"$$" -P".:{Hugs}/libraries:{Hugs}/oldlib:{Hugs}/libraries/win32:{Home}/Haskell" -S".hs;.lhs" -E"C:\\Program Files\\UltraEdit\\UEDIT32.EXE" -c40 However, when I quit and restart WinHugs it only loads the default search path : -P.:{Hugs}/libraries:{Hugs}/oldlib:{Hugs}/libraries/win32 At this point I need to update the search path every time I start WinHugs. Does anyone have a helpful suggestion? I noticed some discussion back in 2001 about how easy/dangerous it was to change the registry but apparently nothing related to my particular issue. By the way my editor setting persists with no problem. On a possibly related note, the documentation states that the installer sets options in the HKEY-LOCAL-MACHINE but when I checked those registry entries all I found were placeholders with no values set. Thank you for your assistance! --Greg Ballinger

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Re: [Haskell] Hugs Nov2003 X Nov2002
by Ross Paterson 17 Mar '04

17 Mar '04

[redirected to hugs-users] On Tue, Mar 16, 2004 at 11:46:50PM -0000, Stenio wrote: > It is strange because fromInt works in the hugs prompt But when I use it in my > haskell script it doesn´t work. > > Prelude>fromInt 5 :: Float (ok!) > > but > > average :: Int -> Float > average n = fromInt ( sum n ) :: Float / fromInt n :: Float > > doesn´t work... > > fromInteger works in hugs prompt and inside the haskell script too. It's an accident (and arguably a bug) that it works at the prompt. It happens because at the prompt you're inside the current module, and when you don't have any module loaded, the Prelude is the current module. It would be more consistent to make the default current module an empty one instead of the Prelude, so you wouldn't see fromInt there either. Bottom line: fromInt and other non-Haskell 98 things aren't supposed to be available.

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Re: [Haskell] Hugs Nov2003 X Nov2002
by Ross Paterson 16 Mar '04

16 Mar '04

[moved to hugs-users] On Tue, Mar 16, 2004 at 08:03:55AM -0000, Stenio wrote: > I was using Hugs November 2002 and the function fromInt works fine, > but in the version November 2003 the same function doesn´t work. The > same happens with the functions ord and chr. But in this case I find > the solution, chr and ord are in the module Char in version November > 2003 so I have to do : import Char in my Haskell script. Both these incompatibilities result from the Nov 2003 release being more strictly compliant with Haskell 98: - chr and ord are exported by Char, not (any longer) from Prelude. - fromInt, toInt, etc are no longer exported by the Prelude: use fromIntegral instead.

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[Hugs-users] Program code storage space exhausted - Hdoc, Hadockk...
by Thomas Anberree 12 Mar '04

12 Mar '04

here is what I get when trying to install: Hdoc after having typed: ./hdoc-hugs.sh in cygwin __ __ __ __ ____ ___ _______________________________________________ || || || || || || ||__ Hugs 98: Based on the Haskell 98 standard ||___|| ||__|| ||__|| __|| Copyright (c) 1994-2003 ||---|| ___|| World Wide Web: http://haskell.org/hugs || || Report bugs to: hugs-bugs(a)haskell.org || || Version: Nov 2003 _______________________________________________ Hugs mode: Restart with command line option +98 for Haskell 98 mode ERROR "Main.hs" - Program code storage space exhausted Version> --------------- I'd like to install either Hdoc or Hadock to document programs I write using Haskell but I've had a real hard time understanding how to install either of these. I tried both in Windows and Solaris, but I'd rather have these using Windows. I you know about this, or any way to document Haskell modules using Hugs98... Thank you for any help Thomas Anberree

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Error when opening Hugs for Windows
by Thomas Anberree 08 Mar '04

08 Mar '04

Hello, I've just installed WinHugs on a machine running Windows 2000, using: hugs98-Nov2003-2.msi When opening WinHugs, the GUI opens but prompt: Warning: unknown toggle `F'; ignoring. ERROR- a closing quote, '"', was expected then a message box pops, prompting: FATAL ERROR: Unable to load Prelude then it closes. I also installed the same version with the same installer on a machine running Windows XP and it worked perfectly. What should I do to fix this? Thanks Thomas

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