unofficial mirror of help-gnu-emacs@gnu.org
 help / color / mirror / Atom feed
From: Michael Heerdegen <michael_heerdegen@web.de>
To: Hongyi Zhao <hongyi.zhao@gmail.com>
Cc: help-gnu-emacs <help-gnu-emacs@gnu.org>
Subject: Re: Emacs: adding 1 to every number made of 2 digits inside a marked region.
Date: Mon, 27 Sep 2021 00:54:11 +0200	[thread overview]
Message-ID: <878rzj7xt8.fsf@web.de> (raw)
In-Reply-To: <CAGP6POL8M08NG_GfCrmWRLBhFvFa5tKCGCHE-qtj46sVp=uAag@mail.gmail.com> (Hongyi Zhao's message of "Wed, 22 Sep 2021 22:28:28 +0800")

Hongyi Zhao <hongyi.zhao@gmail.com> writes:

> Imagine I've got the following in a text file opened under Emacs:
>
> some    34
> word    30
> another 38
> thing   59
> to      39
> say     10
> here    47
>
> and I want to turn into this, adding 1 to every number made of 2 digits:
>
> some    35
> word    31
> another 39
> thing   60
> to      40
> say     11
> here    48

You might want to give Calc a try for such things.  It doesn't perfectly
handle the editing part though since it doesn't know about rectangle
commands (AFAICT - at least for insertion).

So here is how I would do it:

- mark the rectangular region spanning the numbers
- `C-x * r': this will grab the number column as a matrix and pop up
  Calc
- `1 RET +': will add 1 to all entries

You now have the result as a matrix.  What you have to do now manually
using conventional rectangle commands is to kill the original numbers
from the buffer (they are already marked, so `C-x r k'), and then kill
and yank the numbers as rectangle from the Calc buffer.

Calc also allows to add numbers in a row or column in any buffer in a
similarly easy way.  The Calc tutorial has some examples doing such
things.

Michael.



  parent reply	other threads:[~2021-09-26 22:54 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-22 14:28 Emacs: adding 1 to every number made of 2 digits inside a marked region Hongyi Zhao
2021-09-22 19:50 ` Stephen Berman
2021-09-22 21:04   ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-23  0:23   ` Hongyi Zhao
2021-09-23  7:24     ` Stephen Berman
2021-09-23  7:54       ` Hongyi Zhao
2021-09-23  8:07         ` Stephen Berman
2021-09-23  9:00           ` Hongyi Zhao
2021-09-23 10:07             ` Stephen Berman
2021-09-23 10:13               ` Hongyi Zhao
2021-09-23 10:23                 ` Stephen Berman
2021-09-23 12:58                   ` Hongyi Zhao
2021-09-23 13:29                     ` Stephen Berman
2021-09-23 14:25                       ` Hongyi Zhao
2021-09-22 20:38 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-23  0:42   ` Hongyi Zhao
2021-09-23  0:46     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-23  0:56       ` Hongyi Zhao
2021-09-23  2:06         ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-23  2:12           ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-23  0:57     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-23  8:02   ` Hongyi Zhao
2021-09-23  8:37 ` Andreas Röhler
2021-09-23  9:05   ` Hongyi Zhao
2021-09-23  9:58   ` Hongyi Zhao
2021-09-23 10:10     ` Gregory Heytings
2021-09-23 10:17       ` Hongyi Zhao
2021-09-23 13:08         ` Gregory Heytings
2021-09-23 11:59     ` Andreas Röhler
2021-09-23 13:14       ` Hongyi Zhao
2021-09-23 13:51         ` Andreas Röhler
2021-09-23 14:23           ` Hongyi Zhao
2021-09-23  9:26 ` Gregory Heytings
2021-09-23  9:53   ` Hongyi Zhao
2021-09-23 10:02     ` Gregory Heytings
2021-09-23 14:13     ` [External] : " Drew Adams
2021-09-23 23:50       ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-24  0:23         ` Drew Adams
2021-09-24  2:34           ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-24  3:01             ` Drew Adams
2021-09-24  7:25         ` Gregory Heytings
2021-09-24  7:32           ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-23 11:50 ` Andreas Röhler
2021-09-26 22:54 ` Michael Heerdegen [this message]
2021-09-26 23:50   ` Arthur Miller
2021-09-27  1:02   ` Arthur Miller
2021-09-27  1:22     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-27  5:57       ` Hongyi Zhao
2021-09-28  1:32         ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-27 10:59       ` Arthur Miller
2021-09-28  1:34         ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-28  1:51           ` Arthur Miller
2021-09-27  1:03   ` Arthur Miller
2021-09-27 14:08     ` Arthur Miller

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: https://www.gnu.org/software/emacs/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=878rzj7xt8.fsf@web.de \
    --to=michael_heerdegen@web.de \
    --cc=help-gnu-emacs@gnu.org \
    --cc=hongyi.zhao@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).