How do I retrieve binding powers in a Maxima function definition

... but I should have mentioned that *if* you know what you're looking for
and *if* it is of well-behaved type (e.g. an integer), then you can do
things like

       ?get(verbify("+"),'?rbp);



On Thu, Nov 3, 2011 at 13:28, Stavros Macrakis <macrakis at alum.mit.edu>wrote:

> Re:
>
> > For example, does all such information reside on the property list of a
> symbol?
>
> Yes, but you probably shouldn't try to manipulate property lists in Maxima
> -- there will be many cases where there are things in the property list
> that will confuse Maxima.  Try, for example
>
>      ?symbol\-plist(%e);
> or
>      ?symbol\-plist(verbify("+"));
>
>             -s
>
>
> On Tue, Nov 1, 2011 at 13:56, David R Stoutemyer <dstout at hawaii.edu>wrote:
>
>> Thanks, that seems to be just what I need!
>>
>> I don't know the distinction between mplus and "+", or if any such pairs
>> have different binding powers. However, I want the binding power that is
>> used in Maxima, not Lisp. The only reason I used ?+ was that I saw it in
>> the on-line documentation for "infix" and inferred that it was the Maxima
>> binding power.
>>
>> There is other parser data that I would like to access, but can't find
>> online documentation about how to do so.
>>
>> In particular, I would like to determine if a symbol is a matchfix
>> operator, and if so, what is its companion right delimiter?
>>
>> For example, does all such information reside on the property list of a
>> symbol?
>>
>> If so, is there a function that returns the entire property list of a
>> symbol so that I could study it and learn the proper keys to use with get()?
>>
>> The reason for all of this is that I am writing a function that tries to
>> transform an expression into a particularly narrow expression. This
>> involves partial deparsing to compare the predicted widths. I want the
>> program to be robust about operators added by a user, so I don't want to
>> simply hard wire the binding powers etc. published in the on-line manual.
>>
>> I would also like to automatically access character widths for the
>> currently selected display font --the subject of an earlier mailing-list
>> query. However, I suspect that involves forbiding forays into perhaps
>> black-box interface, xml, and operating-system code. Until and unless I
>> find out how to do that, the user will simply have to choose between Times
>> New Roman and pdflatex -- or else supplement my measured width properties,
>> which is _very_ tedious.
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>>
>
>