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Date: Fri, 4 Mar 2005 23:41:57 -0500 (EST)
From: Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: cygwin AT cygwin DOT com
Subject: Re: Bug diff 2.8.7: Separate dir
In-Reply-To: <Pine.GSO.4.61.0503042332270.12630@slinky.cs.nyu.edu>
Message-ID: <Pine.GSO.4.61.0503042338550.12630@slinky.cs.nyu.edu>
References: <20050304230549 DOT DF5187EC3 AT mail DOT phys DOT uu DOT nl> <4228F306 DOT C1B09E85 AT dessent DOT net> <Pine DOT GSO DOT 4 DOT 61 DOT 0503042332270 DOT 12630 AT slinky DOT cs DOT nyu DOT edu>
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On Fri, 4 Mar 2005, Igor Pechtchanski wrote:

> On Fri, 4 Mar 2005, Brian Dessent wrote:
>
> > I cannot reproduce this, either from a bash prompt or from cmd using
> > your .bat file:
>
> I can reproduce this (even under bash).  All you need is a textmode mount
> and files with CRLF line endings.

Upon re-reading this, the above seems to imply that this is a bug.  I just
want to clarify that, as explained below, this is NOT a bug, but intended
behavior.  The "workaround" mentioned below is for a faulty setup
(textmode mounts and '\'s in paths), not for any perceived bug.
	Igor

> > It's probably a textmode/binmode issue, though I don't know why
> > switching between '\' and '/' as the path seperator changes it --
> > although the Cygwin path handling code is complex and I can't pretend to
> > understand it.
>
> Having a '\' in a filename bypasses Cygwin's mounts and uses regular
> Windows mechanisms for opening the file.  Reading a file on a textmode
> mount will translate CRLF line endings to normal LFs.  No wonder 'diff'
> is confused.
>
> > There was no attached cygcheck so I don't know how your mounts are setup
> > but from what I've read, using textmode mounts with tools like cvs and
> > diff is a recipe for disaster.
>
> Yep.  One possible workaround is to use the '--strip-trailing-cr' option
> to diff, which will make it insensitive to textmode/binmode line endings.

-- 
				http://cs.nyu.edu/~pechtcha/
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ZZZzz /,`.-'`'    -.  ;-;;,_		igor AT watson DOT ibm DOT com
     |,4-  ) )-,_. ,\ (  `'-'		Igor Pechtchanski, Ph.D.
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