Re: How to do a massive unfill paragraph operation over several hundred files?

[Van L]

>> It's been decades since I messed with it, but
>> as I vaguely recall there's a batch mode for
>> emacs.  Basically, you call emacs from the
>> command line with the "--batch" and other
>> options ("--script [file_containing_elisp]").
> 
> See? I was right even decades ago!
> 
> :)

You had this formulation:

  ┌────
  │ 1  #! /bin/zsh
  │ 2  
  │ 3  # Script to insert a string into files
  │ 4  # 1, 2, and 3:
  │ 5  
  │ 6  local script=do-this.el
  │ 7  
  │ 8  emacs -Q --batch --script $script 1 2 3
  └────

  ┌────
  │ 1  ;; do-this.el
  │ 2  
  │ 3  ;; Elisp to do it:
  │ 4  
  │ 5  (dolist (f argv)
  │ 6    (find-file f)
  │ 7    (insert "Sail away, sail away, sail away…") ; do your thing here
  │ 8    (save-buffer) )
  └────