Re: Emacs: adding 1 to every number made of 2 digits inside a marked region.

[Arthur Miller <arthur.miller@live.com>]

Michael Heerdegen <michael_heerdegen@web.de> writes:

> 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.

Org-table also comes to mind.

#+begin_src org-mode
|some    |34|
|word    |30|
|another |38|
|thing   |59|
|to      |39|
|say     |10|
|here    |47|
#+end_src