Re: Find the longest word in the word list file.

[Emanuel Berg]

Kevin Vigouroux via Users list for the GNU Emacs text editor wrote:

>> Here you go,
>>
>> (defun sort-lines-length (beg end)
>>   (interactive (if (use-region-p)
>>                    (list (region-beginning) (region-end))
>>                  (list (point-min) (point-max)) ))
>>   (save-excursion
>>     (save-restriction
>>       (narrow-to-region beg end)
>>       (goto-char (point-min))
>>       (sort-subr nil
>>                  #'forward-line
>>                  #'end-of-line
>>                  nil nil
>>                  (lambda (a b) (> (- (cdr a) (car a))
>>                                   (- (cdr b) (car b)) ))))))
>> (defalias 'sll #'sort-lines-length)
>>
>> https://dataswamp.org/~incal/emacs-init/sort-incal.el lines 18-32
>
> How do we know that the “sort key” is a cons cell?

I suppose #'forward-line (NEXTRECFUN) and #'end-of-line
(ENDRECFUN) collectively define what is a record...

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