Le 01/04/2025 à 22:11, Steve Litt a écrit :
> Didier Kryn said on Mon, 31 Mar 2025 14:41:37 +0200
>
>
>>     Instead, it is possible to invoque Tcl from within any program,
>> for
>> example an application written in C, while providing it with functions
>> it can call to execute commands which belong to the application
>> proper, making it a high-level steering  function of the application.
>> Of course it can also launch processes like the shell, but I don't
>> think this is the most interesting.
> This sounds very interesting. Could you please elaborate? Are you
> talking about having C do a system("myprogram.tcl"), or something more
> profound?

    AFAIR (this was long ago), the very Tcl intrepreter is a function
your C program can call with, through the calling arguments, an access
to C functions belonging to your application. There is, of course a
specific Tcl API these C functions must match to, but this is all
documented. The Tcl command you can invoque from the command-line is
just a main program which calls this function.

    This very simple but extremely powerfull idea is the very strength
of Tcl in my opinion, the weak point being the primitive and boring
Basic-like syntax of the Tcl language. I just wonder why not all other
interpreters offer the same feature -- IBM's Rexx was doing so.

--     Didier