Re: On Tabs and Spaces

From: Michael Witten <mfwitten@mit.edu>
Date: Oct 17, 2007, 11:23 UTC
Message-ID: <6A484AE6-ECCD-4473-BEF8-3451EBF8FAFF@mit.edu>
In-Reply-To: <dbfc82860710170321l458ebd1cr6bf619cef9bb7300@mail.gmail.com>

On 17 Oct 2007, at 6:21:30 AM, Nikolai Weibull wrote:

> According to this calculation the waste is 47808782 bytes, or about
> 45.6 MiB, for 8-spaces-wide tabs.

I concede my calculation was crude.

Interestingly, modifying my calculation to look for tabs at the beginning of the line gives a similar result:

     # calculates the extra space required to
     # use the given number of spaces/tab.
     size()
     {
         count=`grep -RIo "^\`printf \"\t\"\`" . | wc -l`;
         perl -e "print $count*$(($1-1))/1024/1024 . \" MiB\n\"";
     }

     size 8; => 49.7416791915894 MiB

and for git:
	
     size 8; => 1.25082969665527 MiB

Anyway, thanks for the neat script.

mfwitten

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