Subject: b17.1 - /dev/null fix not complete, RCS configure
From: [email-masked] (Richard Donkin)

22 Dec 1996 15:36:29 -0800
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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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