help-gnu-emacs
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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


From: Andreas Röhler
Subject: Re: Emacs: adding 1 to every number made of 2 digits inside a marked region.
Date: Thu, 23 Sep 2021 10:37:50 +0200
User-agent: Mozilla/5.0 (X11; Linux i686; rv:78.0) Gecko/20100101 Thunderbird/78.14.0

https://github.com/andreas-roehler/numbers-at-point

comes with

ar-raise-in-region-maybe

which should do the trick.

Cheers,

Andreas


On 22.09.21 16:28, Hongyi Zhao wrote:
Today, I stumbled on this interesting discussion here [1]:

--------------------
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
--------------------

I tried all the ELISP codes suggested there, and only found that the
following one is valid:

C-M-% \b[0-9][0-9]\b return \,(1+ \#&)

The other two can't do the trick:

First one:

(defun add-1-to-2-digits (b e)
   "add 1 to every 2 digit number in the region"
   (interactive "r")
   (goto-char b)
   (while (re-search-forward "\\b[0-9][0-9]\\b" e t)
     (replace-match (number-to-string (+ 1 (string-to-int (match-string 0)))))))

Validating method:

`M-:' input-the-above-code-here, RET, `M-x add-1-to-2-digits'.

And the second:

(while (re-search-forward "\\<[0-9][0-9]\\>" nil t) (let ((x
(match-string 0))) (delete-backward-char 2) (insert (format "%d" (1+
(string-to-int x))))))

Validating method:

`M-:' input-the-above-code-here, RET

[1] 
https://stackoverflow.com/questions/2686593/emacs-adding-1-to-every-number-made-of-2-digits-inside-a-marked-region

Any hints/comments/enhancements for these methods will be greatly appreciated?

Regards



reply via email to

[Prev in Thread] Current Thread [Next in Thread]