[Caml-list] Re: [ANN] utop 1.2

[Hongbo Zhang <bobzhang1988@gmail.com>]

On 7/31/12 2:03 AM, Jérémie Dimino wrote:
> Hi,
Greetings,
   Just have a try for the utop and give it up. Here are some 
difficulties that I came across, no complains, hope that will help
utop's next release.

   a. dependency too much. To my limited knowledge, utop is a standalone 
binary, dependency on lwt is a big problem, I never managed to install 
it successfully on Mac(I did on my Linux box)

   b. I still give a try. and grabed package react, try to install 
react, but found that react even don't work with ocamlfind. I stop here. 
(package react is just one file, dependency on react is not worth)

I know it would be convenient to use some package managers like Godi, 
but I maintained my own fork of ocaml(I changed the ocaml's compiler 
frequently, using Godi would bring a lot of pain).

   It would be great if utop is a stand alone package, or , a utop.byte 
is still fine. I have used otags.byte built on Linux, and copied to my 
Mac, it works fine.

   I never used utop(never succeeded :-( ) , but I guess it maybe 
something like slime for lisp, hope this will help utop to gain more users.

Best -- Hongbo Zhang

>
> The utop team is happy to announce the release of utop 1.2, an
> improved toplevel for OCaml. You can download it at this url:
>
>    https://forge.ocamlcore.org/frs/download.php/949/utop-1.2.tar.gz
>
> Important changes are:
>
> * utop now handles parsing/typing/compilation errors itself, this
>    means a better highlighting and more importantly that errors are
>    emphasized in the emacs mode. The style of errors can be controlled
>    via the face "utop-error" in emacs and with the "error" resource of
>    ~/.utoprc in the terminal.
>
> * a "Lwt_main.run" is automatically inserted for toplevel expressions
>    of type "_ Lwt.t". For example, with the classic toplevel:
>
>    # Lwt_io.printf "Hello, world!\n";;
>    - : unit Lwt.t = <abstract>
>
>    and with the new utop:
>
>    # Lwt_io.printf "Hello, world!\n";;
>    - : unit = ()
>
>    This behavior can be disabled with "UTop.set_auto_run_lwt false".
>
> * many emacs mode fixes and improvements. It is now possible to
>    complete a phrase in a tuareg/typerex buffer using the toplevel
>    environment. You have to bind the function "utop-edit-complete" to a
>    key for this feature to work, it is unbound by default.
>
> Here is the complete changelog:
>
>    * ocaml 4.00 compatibility
>    * prevent findlib from being initialized twice
>    * better highlighting of errors
>    * automatically insert Lwt_main.run for
>      toplevel expressions of type 'a Lwt.t
>    * better camlp4 support
>      ** parse quotations and antiquotations to
>         handle completion inside them
>      ** better support revised syntax
>    * emacs mode improvements
>      ** various fixes
>      ** highlight errors
>      ** add a menu
>      ** add interactive list of findlib packages
>      ** packages can be pre-loaded via the file variable
>         "utop-package-list"
>      ** better tuareg integration
>      ** typerex integration
>      ** allow to complete using the toplevel environment
>         in a tuareg buffer
>      ** allow to change the utop command
>      ** use the same history as the terminal mode
>      ** follow output of ocaml
>
> Enjoy!
>