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Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!blake!ogccse!littlei!omepd!merlyn
From: merlyn@intelob.intel.com (Randal L. Schwartz @ Stonehenge)
Newsgroups: comp.emacs,gnu.emacs
Subject: `format' can do leading-zero padding (was Re: line numbers in emacs)
Keywords: GNU emacs editing
Message-ID: <4110@omepd.UUCP>
Date: 7 Feb 89 17:14:46 GMT
References: <22@euteal.UUCP> <35659@bbn.COM>
Sender: news@omepd.UUCP
Reply-To: merlyn@intelob.intel.com (Randal L. Schwartz @ Stonehenge)
Organization: Stonehenge; netaccess via BiiN, Hillsboro, Oregon, USA
Lines: 18
In-reply-to: mesard@bbn.com (Wayne Mesard)

In article <35659@bbn.COM>, mesard@bbn (Wayne Mesard) writes:
| 	(insert (substring "0000000" 0 (- digitc (length (int-to-string num))))
| 		(int-to-string num)
| 		?:)

A little-known trick is that "format" can generate leading zeros ala'
sprintf(3s), as in:

  (insert (format "%07d:" num))

to get the leading-zero-padded numbers needed above.  Cute, eh?
-- 
Randal L. Schwartz, Stonehenge Consulting Services (503)777-0095
on contract to BiiN (for now :-), Hillsboro, Oregon, USA.
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Standard disclaimer: I *am* my employer!
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