- Update to 12.2 to avoid obsolete (process-kill-without-query) (boo#1175274)
  * AUCTeX reflects the changes in LaTeX2e 2019-10-01 release.
     'filecontents' environment now takes an optional argument and can
     be used anywhere in a document.  The macros '\Ref' and
     '\labelformat' are moved from 'varioref.sty' to LaTeX kernel.
     amsmath has a new macro '\overunderset'.
  * A new method is implemented in preview-latex to adjust the
    foreground colors of generated images to those of Emacs, when the
    LaTeX command produces PDF.  The traditional method became invalid
    because of the change introduced in Ghostscript 9.27.
    Unfortunately, the new method doesn't work due to a bug in
    Ghostscript 9.27 and is valid only for Ghostscript > 9.27.  There
    is also a fallback method for gs 9.27 users which displays plain
    "black on white" images.  For successful function of preview-latex,
    the users are encouraged to set up the new user option
    'preview-pdf-color-adjust-method' to choose appropriate option
    among the three: new, traditional and fallback method.
  * AUCTeX has support for the Flymake package in Emacs 26 or newer.
    To enable, call 'M-x flymake-mode RET' or add this to your '.emacs'
    file:
         (add-hook 'LaTeX-mode-hook #'flymake-mode)
  * The way the option 'TeX-record-buffer' is used was corrected.  It
    was used in just the opposite way as the document says.  Erase the
    customization if you have customized this option since it now acts
    in reverse to your expectation.
  * A former customize option 'japanese-TeX-command-list' is removed.
    Use 'japanese-TeX-engine-default', or if it's really necessary,
    customize 'TeX-command-list' directly if the task which the option
    used to carry is required.
  * Support for standard LaTeX without e-TeX extension is now very

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