[Maxima-bugs] [maxima:bugs] #3353 dlsode creates an"<" wxMaxima's wxmathml.lisp cannot escape

[Gunter K. <pet...@us...>]

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** [bugs:#3353] dlsode creates an"<" wxMaxima's wxmathml.lisp cannot escape**

**Status:** open
**Group:** None
**Created:** Mon Nov 13, 2017 07:06 AM UTC by Gunter Königsmann
**Last Updated:** Mon Nov 13, 2017 07:06 AM UTC
**Owner:** nobody


Maxima normally first outputs everything a command prints to stdout or stderr, then the actual result of the command.  The result of the command is converted by wxMaxima's wxmathml.lisp to an XML description of the equation which involves escaping every "<" to an "<".

dlsode seems to be able to prevent that introducing a "#<FUNCTION (LAMBDA" in its output stream - which causes wxMaxima to rightly complain that what it got was no valid XML. I cannot find the place in the source that does do this, though.

~~~
load(dlsode);
y: [1d0, 0d0, 0d0];
t: 0d0;
rtol : 1d-4;
atol: [1d-6, 1d-10, 1d-6];
istate: 1;
mf: 21;
f1: -.04d0*y1 + 1d4*y2*y3;
f3: 3d7*y2*y2;
fex: [f1, -f1-f3, f3];
t:0d0;
tout:.4d0;
result :[];
state : dlsode_init(fex, ['t,y1,y2,y3], mf);
~~~

The result of this example is (double-click on the network icon in the bottom right of the maxima window in order to see it):
~~~
<mth>
  <lbl>(%o14) </lbl>
  <r>
   <t>[</t>
   <r>
    <t>[</t>
    <v>f</v>
    <t>,</t>#<FUNCTION (LAMBDA
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           (
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            $T
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            $Y1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            $Y2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            $Y3)) {1002CF341B}>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>vars</v>
     <t>,</t>
     <r>
      <t>[</t>
      <v>t</v>
      <t>,</t>
      <v>y1</v>
      <t>,</t>
      <v>y2</v>
      <t>,</t>
      <v>y3</v>
      <t>]</t>
      </r>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>mf</v>
     <t>,</t>
     <n>21</n>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>neq</v>
     <t>,</t>
     <n>3</n>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>lrw</v>
     <t>,</t>
     <n>58</n>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>liw</v>
     <t>,</t>
     <n>23</n>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>rwork</v>
     <t>,</t>
     <v>Lisp array [58]</v>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>iwork</v>
     <t>,</t>
     <v>Lisp array [23]</v>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>fjac</v>
     <t>,</t>#<FUNCTION (LAMBDA
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            (
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             $T
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             $Y1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             $Y2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             $Y3)) {1002CF2C7B}>
      <t>]</t>
      </r>
     <t>]</t>
     </r>
    </mth>
<PROMPT-P/>(%i15) <PROMPT-S/><mth>
  <lbl>(%o14) </lbl>
  <r>
   <t>[</t>
   <r>
    <t>[</t>
    <v>f</v>
    <t>,</t>#<FUNCTION (LAMBDA
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           (
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            $T
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            $Y1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            $Y2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            $Y3)) {1002CF341B}>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>vars</v>
     <t>,</t>
     <r>
      <t>[</t>
      <v>t</v>
      <t>,</t>
      <v>y1</v>
      <t>,</t>
      <v>y2</v>
      <t>,</t>
      <v>y3</v>
      <t>]</t>
      </r>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>mf</v>
     <t>,</t>
     <n>21</n>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>neq</v>
     <t>,</t>
     <n>3</n>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>lrw</v>
     <t>,</t>
     <n>58</n>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>liw</v>
     <t>,</t>
     <n>23</n>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>rwork</v>
     <t>,</t>
     <v>Lisp array [58]</v>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>iwork</v>
     <t>,</t>
     <v>Lisp array [23]</v>
     <t>]</t>
     </r>
    <t>,</t>
    <r>
     <t>[</t>
     <v>fjac</v>
     <t>,</t>#<FUNCTION (LAMBDA
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            (
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             $T
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             $Y1
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             $Y2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             $Y3)) {1002CF2C7B}>
      <t>]</t>
      </r>
     <t>]</t>
     </r>
    </mth>
<PROMPT-P/>(%i15) <PROMPT-S/>
~~~
This might not de an actual bug in maxima. But I still need a lisp wizard in order to resolve it.


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