Andrey G. Grozin wrote:
>
> On Fri, 7 Jan 2011, Waldek Hebisch wrote:
> > We already have getEnv function.
> I think we can postpone design and implementation of a general mechanism
> for passing command-line arguments. Now there is a pressing need, for
> starting FriCAS from TeXmacs, to do something like that:
>
> * TeXmacs calls
> fricas -pre texmacs.input
>
> * fricas script does
> export FRICAS_PRE=texmacs.input
>
> * i-toplev.boot calls getEnv("FRICAS_PRE") and, if this variable is set,
> reads the file after .fricas.input but before starting the interactive
> session
>
> This mechanism is quite useful in itself, without TeXmacs. Any user can
> have several files with initial settings for different kinds of sessions,
> and using just one init file .fricas.input for temporary needs is
> inconvenient because it's too permanent.
>
> What do you think about this specific proposal? Of course, the names (-pre
> and FRICAS_PRE) can be replaced by something better.
>
Yes, that is useful. I think that 'pre' is too unspecific, what
about 'FRICAS_PREINIT' and '--preinit'? Also I similar way we can
add 'FRICAS_EVAL_LISP' and '--eval-lisp' to evaluate arbitrary
piece of Lisp code. And maybe 'FRICAS_EVAL' and '--eval' for
interpreter input. The execution order would be Lisp, then
preinit then eval.
--
Waldek Hebisch
[email protected]
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