I want to setup the imaxima buffer with working LaTeX output. Following the EmacsWiki, I added this to my init:

(add-to-list 'load-path "/usr/share/emacs/site-lisp/")
(autoload 'maxima-mode "maxima" "Maxima mode" t)
(autoload 'imaxima "imaxima" "Frontend for maxima with Image support" t)
(autoload 'maxima "maxima" "Maxima interaction" t)
(autoload 'imath-mode "imath" "Imath mode for math formula input" t)
(setq imaxima-use-maxima-mode-flag t)
(add-to-list 'auto-mode-alist '("\\.ma[cx]" . maxima-mode))

I have maxima installed on my machine (Void Linux) and it runs fine in a shell. There are indeed .el files in /usr/share/emacs/site-lisp/: imaxima.el, maxima.el, imath.el and others.

In Emacs, I launch M-x imaxima and land in a maxima buffer. There are two problems:

  1. Everything crashes if I hit Return with no ; character at the end of the line. Emacs becomes totally unresponsive and I have to kill it.
  2. When I put the ; character, there is an error message :
(%i1) 1 + 1;

LaTeX error in: 2

I have a texlive installation on my machine but perhaps imaxima runs the wrong command?

Has someone encountered these problems and has an example of a working configuration?

Edit 1:

If I run emacs with emacs 2> emacs-stderr.log, I find that nothing gets written to stderr at all.

  • FWIW this (new and buggy) behaviour also happens in a Window 10 64 bit machine with GNU Emacs 27.1 (build 1, x86_64-w64-mingw32) of 2020-08-21, with imaxima-setup.el file from Maxima 5.44.0 for windows. Also, the introduction of amsmath package in imaxima-latex-preamble has no effect. In this particular installation LaTeX distro is MikTeX 2.9.
    – csrabak
    Mar 26, 2021 at 0:48
  • Same here with a Linux Debian 10 machine. The introduction of amsmath in imaxima-latex-preamble did not help.
    – F. Tusell
    Dec 21, 2021 at 17:02

2 Answers 2


This is possibly due to a known problem with package loading in texlive2020. Until this is fixed, a workaround would be to put:


in the emacs variable imaxima-latex-preamble to make sure this is loaded first.


I had the same problem which was solved following instructions in: https://sourceforge.net/p/maxima/bugs/3687/ The solution is replacing files as root: imaxima.el, imath.el and adding file mylatex.ltx.el in directory: /usr/share/emacs/site-lisp/maxima. You can download the files in the given link. Good luck.

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