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I would like to fill justify all paragraphs in the current buffer if no region is selected. I wrote the the following function which performs this job.

Is there a better way to write this function? Is there a build-in function which performs this job?

(defun my-fill-buffer () 
  (interactive)
  (if (not (region-active-p))
      (save-excursion
        (mark-whole-buffer)
        (call-interactively 'fill-region))))
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  • 1
    The key sequence for indenting the whole buffer is already quite short: C-x h <tab>. So I don't need a special command for that.
    – Tobias
    Feb 7, 2018 at 16:53
  • @Tobias the effect of C-x h <tab> and C-x h M-x fill-region is different. What I need is the latter.
    – Name
    Feb 7, 2018 at 16:56
  • 1
    Sorry my bad, meant C-x h M-q. (See doc of fill-paragraph: The REGION argument is non-nil if called interactively; in that case, if Transient Mark mode is enabled and the mark is active, call ‘fill-region’ to fill each of the paragraphs in the active region, instead of just filling the current paragraph.)
    – Tobias
    Feb 7, 2018 at 17:00
  • @Tobias Thank you for your illuminating explanation.
    – Name
    Feb 7, 2018 at 17:10
  • 3
    IOW, C-x h followed by C-u M-q will justify each paragraph in the buffer.
    – Drew
    Feb 7, 2018 at 18:35

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