pdiff + tellsimpafter behaves differently inside function

Hmm, "repopulated" must be my phone's autocorrection (?!?) for
"tellsimpafter"....

On Wed, Jan 2, 2013 at 7:50 AM, Stavros Macrakis <macrakis at gmail.com> wrote:

> The ''x (two single quotes) syntax means "evaluate at read time". You
> probably need to use apply('repopulated,...) to evaluate at execution time.
>
> Also, to make function F local, it isn't enough to make the variable F
> local; use local(...).
>
>         -s
> On Jan 2, 2013 6:57 AM, "Nijso Beishuizen" <nijso at hotmail.com> wrote:
>
>> Dear all,
>>
>> I am trying to rewrite some things using pdiff, so I first load(pdiff).
>> When I then enter the code below as separate statements on the command
>> line in
>> maxima, tellsimpafter will work and simplify the expression to g(1).
>> However,
>> when I place it inside a function, it will complain, saying:
>>
>> tellsimpafter: pattern must not be an atom; found: h1
>> #0: test()(test.mac line 6)
>>
>> here's the code:
>>
>> test() := block([expr,f,g,df,h1,F],
>>   expr : diff(f(x), x)*g(y),
>>   F(xx,yy) := at(expr, [x = xx,y=yy]),
>>   df:diff(f(x),x),
>>   h1:subst(1,x,df),
>>   tellsimpafter(''h1,1),
>>   print(F(1,1))
>> )$
>>
>>
>> I also tried switching off debugging stuff from a maxima function using
>> the
>> lisp function from Robert Dodier, but that didn't work, so I guess this is
>> something else (btw, Robert, thanks for the fix!). Does somebody know what
>> goes wrong here?
>>
>> Best,
>> NB
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>>
>