Re: Infix/postfix/nary redefinition issue (was loading to_poly_solve has side-effect).

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Hi David,

Thanks for taking the time to look into this.
I've attached 2 files: a diff (comparing to 60186bb22) of the work:
*  changes to src/defcal.lisp and src/nparse.lisp (the proposed fix)
* tests/rtest_operators.mac
* change to src/testsuite.lisp to actually run rtest_operators.mac (I'm not
sure if this is needed ?)
I've also added a handover document that you can give to claude, and then
interact with it to find out more details (that can be useful in your
review process).

serge

On Tue, Jul 28, 2026 at 1:29=E2=80=AFPM David Scherfgen <d.scherfgen@google=
mail.com>
wrote:

> Great! Please share Claude's fix in whatever way is the most convenient
> for you, and I will give it another review and integrate it.
>
> serge de marre <[email protected]> schrieb am Di., 28. Juli 2026, 13:05:
>
>> Hi all,
>>
>> Turns out the issue has nothing to do with to_poly_solve itself, but wit=
h
>> operator (re)definitions.
>> it's not just with nary, but also with prefix, postfix, infix, nofix and
>> matchfix.
>> I've added a bug entry in sourceforge ( Maxima -- GPL CAS based on
>> DOE-MACSYMA / Bugs / #4883 Redefining an operator to be infix/postfix/na=
ry
>> causes a parser bug <https://sourceforge.net/p/maxima/bugs/4883/> ) ,
>> with steps to reproduce.
>> I've also attached a testcase to that sourceforge issue, a testcase that
>> currently fails and that should pass (I think).
>> I've used claude to assist with the investigation (and the writing of th=
e
>> test), and it suggested 2 fixes that I can provide (or I could create a
>> pull request),
>> The fixes make the provided testcase pass, as well as the 19700+ tests o=
f
>> the current run_testsuite(share_tests=3Dtrue);
>>
>> serge
>> _______________________________________________
>> Maxima-discuss mailing list
>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/maxima-discuss
>>
>

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<div dir=3D"ltr">Hi David,<div><br></div><div>Thanks for taking the time to=
 look into this.</div><div>I&#39;ve attached 2 files: a diff (comparing to=
=C2=A060186bb22) of the work:=C2=A0</div><div>*=C2=A0<span style=3D"backgro=
und-color:transparent">=C2=A0changes to src/defcal.lisp and src/nparse.lisp=
=C2=A0(the proposed fix)</span></div><div>* tests/rtest_operators.mac</div>=
<div>* change to src/testsuite.lisp to actually run rtest_operators.mac (I&=
#39;m not sure if this is needed ?)</div><div>I&#39;ve also added a handove=
r document that you can give to claude, and then interact with it to find o=
ut more details (that can be useful in your review process).</div><div><br>=
</div><div>serge</div></div><br><div class=3D"gmail_quote gmail_quote_conta=
iner"><div dir=3D"ltr" class=3D"gmail_attr">On Tue, Jul 28, 2026 at 1:29=E2=
=80=AFPM David Scherfgen &lt;<a href=3D"mailto:[email protected]">=
[email protected]</a>&gt; wrote:<br></div><blockquote class=3D"gma=
il_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,2=
04,204);padding-left:1ex"><div dir=3D"auto">Great! Please share Claude&#39;=
s fix in whatever way is the most convenient for you, and I will give it an=
other review and integrate it.</div><br><div class=3D"gmail_quote"><div dir=
=3D"ltr" class=3D"gmail_attr">serge de marre &lt;<a href=3D"mailto:sdemarre=
@gmail.com" target=3D"_blank">[email protected]</a>&gt; schrieb am Di., 28=
. Juli 2026, 13:05:<br></div><blockquote class=3D"gmail_quote" style=3D"mar=
gin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1=
ex"><div dir=3D"ltr"><div id=3D"m_-3318829815725664550m_-640002428975278414=
7gmail-:2i6" aria-label=3D"Message Body" role=3D"textbox" aria-multiline=3D=
"true" style=3D"direction:ltr;min-height:85px" aria-controls=3D":2kv" aria-=
expanded=3D"false"><div id=3D"m_-3318829815725664550m_-6400024289752784147g=
mail-:2i6" aria-label=3D"Message Body" role=3D"textbox" aria-multiline=3D"t=
rue" style=3D"direction:ltr;min-height:85px" aria-controls=3D":2kv" aria-ex=
panded=3D"false">Hi all,<div><br></div><div>Turns out the issue has nothing=
 to do with to_poly_solve itself, but with operator (re)definitions.</div><=
div>it&#39;s not just with nary, but also with prefix, postfix, infix, nofi=
x and matchfix.</div><div>I&#39;ve added a bug entry in sourceforge (

<a href=3D"https://sourceforge.net/p/maxima/bugs/4883/" rel=3D"noreferrer" =
target=3D"_blank">Maxima -- GPL CAS based on DOE-MACSYMA / Bugs / #4883 Red=
efining an operator to be infix/postfix/nary causes a parser bug</a>=C2=A0)=
 , with steps to reproduce.</div><div>I&#39;ve also attached a testcase=C2=
=A0to that sourceforge issue, a testcase that currently fails and that shou=
ld pass (I think).</div><div>I&#39;ve used claude to assist with the invest=
igation (and the writing of the test), and it suggested 2 fixes that I can =
provide (or I could create a pull request),</div><div>The fixes make the pr=
ovided testcase pass, as well as the 19700+ tests of the current run_testsu=
ite(share_tests=3Dtrue);</div><div><br></div><div>serge</div></div></div></=
div>
_______________________________________________<br>
Maxima-discuss mailing list<br>
<a href=3D"mailto:[email protected]" rel=3D"noreferrer" =
target=3D"_blank">[email protected]</a><br>
<a href=3D"https://lists.sourceforge.net/lists/listinfo/maxima-discuss" rel=
=3D"noreferrer noreferrer" target=3D"_blank">https://lists.sourceforge.net/=
lists/listinfo/maxima-discuss</a><br>
</blockquote></div>
</blockquote></div>

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