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Re: Determining programatically whether the interpreter is Guile or Clis

From: Nala Ginrut
Subject: Re: Determining programatically whether the interpreter is Guile or Clisp or Emcs
Date: Wed, 31 Jul 2013 10:27:40 +0800

On Mon, 2013-07-29 at 15:21 +0400, 白い熊 wrote:
> Nala Ginrut <address@hidden> wrote:
> >> I would like to program for Guile as the lowest denominator. 
> >> 
> >> What is the proper check I should define that would tell me whether
> >I'm currently interpreting the code in Guile,  or Emacs,  or Crisp. 
> >> 
> >
> >If you just want to check whether a symbol was defined, try:
> >(module-defined? (current-module) 'function-lambda-expression)
> Hi: 
> Thanks for the tip. 
> What I'm trying to do:  I have a host of kx-...  functions which I want to 
> call from any interpreter with the same syntax,  i.e.  let's say for instance 
> (kx-file-open "funny-file.txt")
> Now,  within the kx-file-open I need to find out whether I'm in guile or 
> clisp or emacs, via a function call, let's say kx-interpreter. 

I have no better idea but I think it can be handled by 'catch
exception', but I don't think guile/clisp/emacs have same procedure
named 'catch' or else.

> This function should return let's say 0 for guile, 1 for clisp and 2 for 
> emacs. Based on this, the file open function will use the appropriate lisp 
> syntax for opening the file. 
> Now I'm wondering what the most effective / fastest way is to find out not 
> whether a symbol is defined, but basically the answer to the self-awareness 
> question: am I in guile, or am I in emacs... 

Here's a dilemma, unless guile/clisp/emacs have the same
checker-procedure with same name and definition, you have no promise to
check it under different language environment. The best way is
prepossess which is portable.

Maybe there's better idea I didn't know?


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