w3-kill-emacs-func

The function w3-kill-emacs-func does not heed the variable
url-history-track when calling url-history-save-history. It
should only do this if (eq url-history-track t), maybe taking
url-history-save-interval also into account.

Furthermore, this function has references to the variable
w3-temporary-directory which does not exist any more. By the way,
the function w3-show-dvi in w3-latex.el has a reference to this
variable as well.

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Klaus Straubinger