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Date:	Sat, 16 May 2009 06:56:48 -0600
From:	Eric Blake <ebb9 AT byu DOT net>
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Subject:	Re: [1.7] Updated: {emacs,emacs-X11,emacs-el}-23.0.92-1
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According to Marc Girod on 5/16/2009 4:17 AM:
> 
> Marc Girod wrote:
>> uname -r
>> this gives on 2 installations e.g.:
>> 
>> 1.5.25(0.156/4/2)
>> 1.7.0(0.210/5/3)
>> 
>> $ ./uname -s
>> CYGWIN_NT-6.0
> 

uname -s is wrong (you will get the same answer for two different cygwin
installations on the same underlying Windows, but different answers across
different Windows versions).  But uname -r is reliable.

>>
> Er... maybe you would object that this is part of coreutils,
> and thus not necessarily of every cygwin installation...

Coreutils is part of every cygwin installation, as is every other package
in the Base category (for example, findutils, tar, bash...).  In other
words, there are some programs so essential to a unix-y environment that
you can count on them being present.

But that said, all coreutils' uname(1) does is call uname(2).  So emacs
can reliably use uname(2) (provided by cygwin1.dll) rather than wasting a
fork to call uname(1).

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9 AT byu DOT net
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