Re: Another distro fix request, ispell/aspell/hunspell/...

["G. Milde" <milde@xxxxxxxxxxxxxxxxxxxxx>]

On 16.02.09, Tom Culliton wrote:
> Well I generally edit the command in the ispell.sl (as root if necessary)
> but it's one of those things that always seems to come up at some
> inconvenient moment.  While doing this for a recent Fedora 10 install it
> struck me that it should be simple enough (maybe a dozen lines of slang)
> to make it a bit more automatic in the core.  Something like (faux-slang -
> meaning I didn't check the exact function names or command line args):

After checking the variable/function names I suggest the following:

%!%+
%\variable{Ispell_Program_Name}
%\synopsis{spell-check command}
%\usage{variable Ispell_Program_Name = ""}
%\description
% The spell check command used by \sfun{ispell}. 
% Must be ispell-compatible (one of "ispell", "aspell" or "hunspell"). 
% The default value "" means auto-detect.
%\seealso{ispell, search_path_for_file}
%!%-
custom_variable("Ispell_Program_Name", "");
% Search for candidates:
!if (Ispell_Program_Name == "") {
  foreach $1 (["aspell", "hunspell", "ispell"])
      if (search_path_for_file(getenv("PATH"), $1, path_get_delimiter()) 
	  != NULL) {
	 Ispell_Program_Name = $1;
	 break;
      }
}

Some remarks:

* I used the variable name established in Paul Boekholts ispell mode
  http://jedmodes.sf.net/mode/ispell/ .

* In the standard ispell.sl replace all hard coded references to "ispell" with
  Ispell_Program_Name.

* the path_get_delimiter() argument is only needed for Jed 0.99.18
  compatibility, it is the default in Jed 0.99.19.

* The test for hunspell should only be done if hunspell is truely
  ispell-compatible (allows automatic processing of the return values and
  output by the ispell mode).
  
* the custom_variable() command is only needed once: if the user has set a
  value (other than ""), the auto-detection is skipped anyway.
  
* the command line options can be added later e.g. by
  Ispell_Program_Name += " -a";
  This is what the jedmodes.sf.net version of the ispell mode does.


@Paul: how about using this OS-independent search also in ispell_init.sl?

Günter

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