[Maxima-discuss] "display2d:'emaxima;" fails in a recent Maxima

[Eduardo O. <edu...@gm...>]

Hi all,

I updated Maxima to the latest version in
<https://git.code.sf.net/p/maxima/code> a few hours ago - after
several months - and in the current version emaxima.lisp doesn't
work...

Here are some details. I'm on Debian 11 ("oldstable"), and these
commands

  /usr/bin/maxima
    load("/usr/share/emacs/site-lisp/maxima/emaxima.lisp");
    display2d:'emaxima;
    x*y;
    quit();

  /usr/local/bin/maxima
    load("/usr/local/share/emacs/site-lisp/emaxima.lisp");
    display2d:'emaxima;
    x*y;
    quit();

compare a version of Maxima in which "display2d:'emaxima;" works with
a version in which it doesn't work. Here's what I get when I execute
them:

  /home/edrx(edrx:sc)# /usr/bin/maxima

  Maxima 5.44.0 http://maxima.sourceforge.net
  using Lisp GNU Common Lisp (GCL) GCL 2.6.12
  Distributed under the GNU Public License. See the file COPYING.
  Dedicated to the memory of William Schelter.
  The function bug_report() provides bug reporting information.
  (%i1)   load("/usr/share/emacs/site-lisp/maxima/emaxima.lisp");
  (%o1)           /usr/share/emacs/site-lisp/maxima/emaxima.lisp
  (%i2)   display2d:'emaxima;
  (%o2) \mathrm{emaxima}
  (%i3)   x*y;
  (%o3) x\,y
  (%i4)   quit();
  /home/edrx(edrx:sc)#
  /home/edrx(edrx:sc)# /usr/local/bin/maxima
  Loading /home/edrx/.maxima/maxima-init.lisp
  Loading /home/edrx/.maxima/maxima-init.mac
  Maxima branch_5_47_base_1316_g59adc2c4c https://maxima.sourceforge.io
  using Lisp SBCL 2.1.1.debian
  Distributed under the GNU Public License. See the file COPYING.
  Dedicated to the memory of William Schelter.
  The function bug_report() provides bug reporting information.
  (%i1)   load("/usr/local/share/emacs/site-lisp/emaxima.lisp");
  (%o1)            /usr/local/share/emacs/site-lisp/emaxima.lisp
  (%i2)   display2d:'emaxima;

  assignment: cannot assign emaxima to `display2d': must be one of: false,
true.
   -- an error. To debug this try: debugmode(true);
  (%i3)   x*y;
  (%o3)                                 x y
  (%i4)   quit();
  /home/edrx(edrx:sc)#

Am I the only one getting that?

  Cheers, and thanks in advance,
    Eduardo Ochs
    http://anggtwu.net/eev-maxima.html