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bug#10019: sort options -Mn are incompatible

From: Paul Eggert
Subject: bug#10019: sort options -Mn are incompatible
Date: Fri, 11 Nov 2011 11:50:56 -0800
User-agent: Mozilla/5.0 (X11; Linux i686; rv:7.0.1) Gecko/20110929 Thunderbird/7.0.1

On 11/11/2011 09:55 AM, Pádraig Brady wrote:
>   sort -b -k4.9,4.12 -k4.5b,4.7Mb -k4.2,4.3 -k4.14,4 access_log
Whew!  That's pretty subtle.  Do you observe
a significant performance improvement by avoiding
-n?  I'm asking partly because the manual does it this way:

  sort -t ' ' -k 4.9n -k 4.5M -k 4.2n -k 4.14,4.21

I find this a bit easier to explain, but if it's significantly
slower we should probably fix the manual.

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