On January 23, 2007 10:56 PM Arthur Ralfs
>
> Bill Page wrote:
> > ....
> > In SPAD you can write something like this:
> >
> > --- File: CommandLine.spad ---
> > )abbrev package CL CommandLine
> > CommandLine(): Exports == Implementation where
> > Exports ==> with
> > current: () -> String
> > Implementation ==> add
> > current() ==
> > -- if $currentLine is a list, command is last entry
> > if list?(_$currentLine$Lisp)$SExpression then
> > string last(_$currentLine$Lisp)$Lisp
> > else
> > string _$currentLine$Lisp
> >
> > --- end ---
> >
> > ...
> > Does that help?
> >
> Thank you, that's very helpful, although it turns out that
> $internalHistoryTable has the information I need, rather
> than $currentLine.
>
Great.
Concerning $internalHistoryTable, I worry that this variable
might not always have the information that you need. Consider
the effect of the command:
(1) -> )history )file myhistory
When the history facility is active, history information will be
maintained in a file (and not in an internal table).
which is (more and less) described here:
http://wiki.axiom-developer.org/axiom--test--1/src/interp/IHistBoot
See also
)history [ )on | )off ]
Of course, this depends on exactly what and when you want to do
what you want to do. :-)
Regards,
Bill Page.
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