GNU bug report logs - #25454
25.1; improvement ftoopy-from-above-command

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Francesco Potortì <pot <at> gnu.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 25.1; improvement ftoopy-from-above-command
Date: Sun, 15 Jan 2017 21:00:30 +0100

This is the version I use:

it copies line from above as the stock one, but when called repeatedly
it copies from further above lines.  Moreover, when called with a
numeric argument, increments all the numbers fund in the copied text by
the argument.

;; Modified from misc.el distributed with 19.30
;; by "Francesco Potortì <F.Potorti <at> isti.cnr.it>"

(defvar my-copy-from-above-lines -1)
(defvar my-copy-from-above-chars 0)
(defvar my-copy-from-above-inc 0)

(defun my-copy-from-above-command (&optional arg)
  "Copy the previous line incrementing numbers, starting just above point.

All integer numbers fetched as part of the line are incremented by ARG.
If no argument is given, numbers are left as they are.
Successive invocations of this command fetch successively previous lines.
The characters copied are inserted in the buffer before point, mark is
set to the beginning of the inserted string."
  (interactive "P")
  (if (eq last-command 'copy-from-above-command)
      (progn
	(delete-char (- copy-from-above-chars))
	(setq copy-from-above-lines (1- copy-from-above-lines)))
    (push-mark)
    (setq copy-from-above-lines -1)
    (setq copy-from-above-inc (if arg (prefix-numeric-value arg) 0)))
  (let ((cc (current-column))
	(string ""))
    (save-excursion
      (forward-line copy-from-above-lines)
      (move-to-column cc)
      ;; If current column winds up in middle of a tab,
      ;; copy appropriate number of "virtual" space chars.
      (if (< cc (current-column))
	  (if (= (preceding-char) ?\t)
	      (setq string (make-string (- (current-column) cc) ?\ ))
	    ;; In middle of ctl char => copy that whole char.
	    (backward-char 1)))
      (setq string (concat string
			   (buffer-substring (point)
					     (save-excursion
					       (end-of-line) (point))))))
    (let ((index 0)
	  (oldstr "")
	  (newstr ""))
      (while (string-match "[0-9]+" string index)
	(setq oldstr (match-string 0 string))
	(setq newstr
	      (format
	       (concat "%0" (int-to-string (length oldstr)) "d")
	       (+ copy-from-above-inc (string-to-number oldstr))))
	(setq index (+ (match-beginning 0) (length newstr)))
	(setq string (replace-match newstr nil nil string))))
    (setq copy-from-above-chars (length string))
    (insert string)))

(global-set-key "\M-p" 'my-copy-from-above-command)


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Message #8 received at 25454 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Francesco Potortì <pot <at> gnu.org>
Cc: 25454 <at> debbugs.gnu.org
Subject: Re: bug#25454: 25.1; improvement ftoopy-from-above-command
Date: Sat, 27 Jul 2019 12:35:47 +0200

Francesco Potortì <pot <at> gnu.org> writes:

> This is the version I use:
>
> it copies line from above as the stock one, but when called repeatedly
> it copies from further above lines.  Moreover, when called with a
> numeric argument, increments all the numbers fund in the copied text by
> the argument.

This seems pretty useful, but it's an incompatible change, since ARG is
currently:

Copy ARG characters, but not past the end of that line.

So I don't think this would be a candidate for inclusion in Emacs, but
perhaps it could be rewritten and made into a M/ELPA package?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #13 received at 25454 <at> debbugs.gnu.org (full text, mbox):

From: Noam Postavsky <npostavs <at> gmail.com>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: Francesco Potortì <pot <at> gnu.org>, 25454 <at> debbugs.gnu.org
Subject: Re: bug#25454: 25.1; improvement ftoopy-from-above-command
Date: Sat, 27 Jul 2019 07:29:48 -0400

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> Francesco Potortì <pot <at> gnu.org> writes:
>
>> This is the version I use:
>>
>> it copies line from above as the stock one, but when called repeatedly
>> it copies from further above lines.  Moreover, when called with a
>> numeric argument, increments all the numbers fund in the copied text by
>> the argument.
>
> This seems pretty useful, but it's an incompatible change, since ARG is
> currently:
>
> Copy ARG characters, but not past the end of that line.
>
> So I don't think this would be a candidate for inclusion in Emacs, but
> perhaps it could be rewritten and made into a M/ELPA package?

Seems a bit small for a separate package.  And the repeated call thing
could be useful in itself.  Couldn't the increment behaviour be enabled
by a non-numeric argument instead?

Message #16 received at 25454 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Noam Postavsky <npostavs <at> gmail.com>
Cc: Francesco Potortì <pot <at> gnu.org>, 25454 <at> debbugs.gnu.org
Subject: Re: bug#25454: 25.1; improvement ftoopy-from-above-command
Date: Sat, 27 Jul 2019 13:32:20 +0200

Noam Postavsky <npostavs <at> gmail.com> writes:

> Seems a bit small for a separate package.  And the repeated call thing
> could be useful in itself.  Couldn't the increment behaviour be enabled
> by a non-numeric argument instead?

Hm...  I guess that's possible.  But the "copy the previous line but
increase the numbers" seems like a somewhat obscure thing to add to a
command like that, but perhaps I'm just not seeing the use case.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #19 received at 25454 <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: Noam Postavsky <npostavs <at> gmail.com>, 25454 <at> debbugs.gnu.org
Subject: Re: bug#25454: 25.1; improvement ftoopy-from-above-command
Date: Sun, 28 Jul 2019 23:50:25 +0300

>> Seems a bit small for a separate package.  And the repeated call thing
>> could be useful in itself.  Couldn't the increment behaviour be enabled
>> by a non-numeric argument instead?
>
> Hm...  I guess that's possible.  But the "copy the previous line but
> increase the numbers" seems like a somewhat obscure thing to add to a
> command like that, but perhaps I'm just not seeing the use case.

What I do in these cases is copy the current line ARG times,
and then use query-replace with \# to increment numbers.
I prefer query-replace for its flexibility since numeric formats
and initial numeric values vary wildly.

Message #26 received at 25454 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Francesco Potortì <pot <at> gnu.org>
Cc: Noam Postavsky <npostavs <at> gmail.com>, 25454 <at> debbugs.gnu.org
Subject: Re: bug#25454: 25.1; improvement ftoopy-from-above-command
Date: Fri, 30 Aug 2019 11:52:16 +0200

Francesco Potortì <pot <at> gnu.org> writes:

>>Seems a bit small for a separate package.  And the repeated call thing
>>could be useful in itself.  Couldn't the increment behaviour be enabled
>>by a non-numeric argument instead?
>
> What do you suggest?  Maybe M-3 M-p copies the next three characters,
> while C-u 3 M-p increments by three?

M-3 and C-u 3 do the same thing, I think?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #29 received at 25454 <at> debbugs.gnu.org (full text, mbox):

From: Francesco Potortì <pot <at> gnu.org>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 25454 <at> debbugs.gnu.org, Noam Postavsky <npostavs <at> gmail.com>
Subject: Re: bug#25454: 25.1; improvement ftoopy-from-above-command
Date: Sat, 31 Aug 2019 14:17:56 +0200

>>Lars:
>>>Seems a bit small for a separate package.  And the repeated call thing
>>>could be useful in itself.  Couldn't the increment behaviour be enabled
>>>by a non-numeric argument instead?

>Francesco Potortì <pot <at> gnu.org> writes:
>> What do you suggest?  Maybe M-3 M-p copies the next three characters,
>> while C-u 3 M-p increments by three?

>M-3 and C-u 3 do the same thing, I think?

They normally do.  And they do in this case.  But it can be changed, and
I was following up with your suggestion, with a proposal for a different
user interface where M-3 and C-u 3 do different things.

However, as I explaind in a previous message, I suspect that the current
default behaviour is useless.  It is certainly useless to me, which is
why I overrode the meaning of the numerical prefix.

Message #32 received at 25454 <at> debbugs.gnu.org (full text, mbox):

From: Noam Postavsky <npostavs <at> gmail.com>
To: Francesco Potortì <pot <at> gnu.org>
Cc: Lars Ingebrigtsen <larsi <at> gnus.org>, 25454 <at> debbugs.gnu.org
Subject: Re: bug#25454: 25.1; improvement ftoopy-from-above-command
Date: Sun, 01 Sep 2019 09:57:16 -0400

Francesco Potortì <pot <at> gnu.org> writes:

>>>Lars:
>>>>Seems a bit small for a separate package.  And the repeated call thing
>>>>could be useful in itself.  Couldn't the increment behaviour be enabled
>>>>by a non-numeric argument instead?
>
>>Francesco Potortì <pot <at> gnu.org> writes:
>>> What do you suggest?  Maybe M-3 M-p copies the next three characters,
>>> while C-u 3 M-p increments by three?
>
>>M-3 and C-u 3 do the same thing, I think?
>
> They normally do.  And they do in this case.  But it can be changed, and
> I was following up with your suggestion, with a proposal for a different
> user interface where M-3 and C-u 3 do different things.

No, both C-u 3 and M-3 will set the prefix argument to 3, so commands
cannot distinguish between them.  I know I suggested the numeric vs
non-numeric thing, but I think I was just confused about it.
Non-numeric arguments are only good for a single toggle (increment vs no
increment), not control over a amount (increment by X).  And you can't
express both at once (both increment and repeat).

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