From:	richardd AT cix DOT compulink DOT co DOT uk (Richard Donkin)
Subject:	b17.1 - /dev/null fix not complete, RCS configure
22 Dec 1996 15:36:29 -0800 :
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Approved:	cygnus DOT gnu-win32 AT cygnus DOT com
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Message-ID:	<memo.786512.cygnus.gnu-win32@cix.compulink.co.uk>
Reply-To:	richardd AT cix DOT compulink DOT co DOT uk
Original-To:	gnu-win32 AT cygnus DOT com
Original-Cc:	richardd AT cix DOT compulink DOT co DOT uk
Original-Sender:	owner-gnu-win32 AT cygnus DOT com

The /dev/null fix is not working in all situations, at least under Win95.  
On trying to make RCS 5.7, I got an error from the 'configure' script 
supplied with RCS, at line 704:

   $DIFF /dev/null conftest1 >conftestn1

The error output was:

checking diff3 library program... /UNIX/H-I386-CYGWIN32/BIN/diff: /dev/null: 
No such file or directory
configure: error: cannot find a working diff3 library program

I tried doing 'diff /dev/null configure' and this also gave the no such file 
error.  Doing 'cat /dev/null' was OK, redirection to or from /dev/null 
works, and the following commands also work with /dev/null arguments or 
redirection: sed, echo, touch, 

Changing /dev/null to 'nul' used to work in b17.0 to work around this, but 
now gives the same error.

Richard
--
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