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From: David Kastrup <dak@gnu.org>
To: help-gnu-emacs@gnu.org
Subject: Re: How to automatically increment an index array
Date: Fri, 27 Jun 2008 08:50:35 +0200	[thread overview]
Message-ID: <858wwrfk1w.fsf@lola.goethe.zz> (raw)
In-Reply-To: 9a68abc5-f2c8-4b83-a661-af134cf1519a@h1g2000prh.googlegroups.com

Xah <xahlee@gmail.com> writes:

> On Jun 26, 12:45 am, "Francis Moreau" <francis.m...@gmail.com> wrote:
>> Hello
>>
>> I have this problem: in a buffer, *scratch* for example I have:
>>
>>   [8735b450] = xxx,
>>   [0x15] = xxx,
>>   [0x16] = xxx,
>>   [0x17] = xxx,
>>   [0x18] = xxx,
>>   [0x19] = xxx,
>>   [0x1a] = xxx,
>>   [0x1b] = xxx,
>>
>> After running a 'magic' command I'd like to calculate the new array indexes
>> as follow:
>>
>>   [8735b450] = xxx,
>>   [8735b454] = xxx,
>>   [8735b458] = xxx,
>>   [8735b45c] = xxx,
>>   [8735b460] = xxx,
>>   [8735b464] = xxx,
>>   [8735b468] = xxx,
>>   [8735b46c] = xxx,
>
> If i understand you correctly, you want to insert increment numbers
> into a column. I needed this every few weeks. Not often, but when
> needed is rather tedious to do manually, so i've written a elisp to do
> it once for all.

Well, one could write something like

C-M-% \[0x\([0-9a-f]+\)\] RET \,(format "[%08x]" (+ (* 4 (string-to-number
\1 16)) #X8745b400)) RET

It is not all too pretty, but not all too bad either.  If the pattern of
the numbers is regular, you might use \# in the replacement rather than
an explicit conversion.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum


  reply	other threads:[~2008-06-27  6:50 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <mailman.13859.1214468323.18990.help-gnu-emacs@gnu.org>
2008-06-26 11:47 ` How to automatically increment an index array Rupert Swarbrick
2008-06-26 11:52   ` Rupert Swarbrick
2008-06-27  2:44 ` Xah
2008-06-27  6:50   ` David Kastrup [this message]
2008-06-27  7:52     ` Thien-Thi Nguyen
     [not found]     ` <mailman.13886.1214553354.18990.help-gnu-emacs@gnu.org>
2008-06-27  8:19       ` David Kastrup
2008-06-27  7:23 ` Klaus Zeitler
2008-06-26  7:45 Francis Moreau
2008-06-26 12:51 ` Peter Dyballa
2008-06-27  8:47 ` David

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