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

[Stephen Berman]

On Thu, 23 Sep 2021 08:23:26 +0800 Hongyi Zhao <hongyi.zhao@gmail.com> wrote:

> On Thu, Sep 23, 2021 at 3:50 AM Stephen Berman <stephen.berman@gmx.net> wrote:
>>
>> On Wed, 22 Sep 2021 22:28:28 +0800 Hongyi Zhao <hongyi.zhao@gmail.com> 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
>> > --------------------
[...]
> This one does nothing:
>
> (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-number x))))))

It works for me.  How exactly did you use it?

Steve Berman