4

It is mentioned in several places that the environment eqnarray should be avoided, e.g., this Avoid eqnarray! article.

That said, when I am using AUCTeX in emacs, if I type C-c C-e eq TAB, I would get the cycling between eqnarray, eqnarray*, equation, and equation*. How can I turn off this eqnarray related prompt since it is not recommended? Note that I have the following in my .emacs file

  (if (>= emacs-major-version 24)
  (setq completion-cycle-threshold 5))

I guess that I could dig through the .el file somewhere and comment out the related lines. On the other hand, I am hoping that this should be done by just adding a few lines in the .emacs file. Thanks in advance!

3

You would have to edit latex.el, but as you said, not the best choice.

Not heavily tested, but putting this into your init file should do the trick:

(defun dj/remove-eqnarray ()
  "Remove eqnarray*? from variable `LaTeX-environment-list'."
  (let ((evil-envs '("eqnarray" "eqnarray*")))
    (LaTeX-environment-list)
    (dolist (env evil-envs)
      (setq LaTeX-environment-list
            (assq-delete-all
             (car (assoc env LaTeX-environment-list))
             LaTeX-environment-list)))))

(eval-after-load "latex"
  '(progn
     (dj/remove-eqnarray)
     (add-hook 'TeX-auto-cleanup-hook #'dj/remove-eqnarray t)))

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