From: Stefan Monnier <monnier@IRO.UMontreal.CA>
To: Reiner Steib <reiner.steib@gmx.de>
Cc: 4451@emacsbugs.donarmstrong.com
Subject: bug#4451: 23.1; EOL problems with vc-diff and cygwin
Date: Mon, 05 Oct 2009 14:45:43 -0400 [thread overview]
Message-ID: <jwv8wfphee2.fsf-monnier+emacsbugreports@gnu.org> (raw)
In-Reply-To: <20091005180753.1mcmt2jzswoko048@imap.uni-ulm.de> (Reiner Steib's message of "Mon, 05 Oct 2009 18:07:53 +0200")
> `vc-coding-system-for-diff' is called 2 times when I do `C-x v ='
> 1)
> vc-coding-system-for-diff("c:/Users/x123456/tmp/check-out/K3.xml")
> vc-diff-internal(t (CVS ("c:/Users/x123456/tmp/check-out/K3.xml")) nil
> nil t)
> vc-diff(nil t)
> call-interactively(vc-diff nil nil)
> 2)
> vc-coding-system-for-diff("c:/Users/x123456/tmp/check-out/K3.xml")
> vc-cvs-diff(("c:/Users/x123456/tmp/check-out/K3.xml") nil nil "*vc-diff*")
> apply(vc-cvs-diff (("c:/Users/x123456/tmp/check-out/K3.xml") nil nil
> "*vc-diff*"))
> vc-call-backend(CVS diff ("c:/Users/x123456/tmp/check-out/K3.xml") nil
> nil "*vc-diff*")
> vc-diff-internal(t (CVS ("c:/Users/x123456/tmp/check-out/K3.xml")) nil
> nil t)
> vc-diff(nil t)
> call-interactively(vc-diff nil nil)
Looks like vc-cvs-diff sets up the coding system redundantly.
>> One possibility for this mistake might be that Diff produces
>> inconsistent EOL format in its output, for example if Diff or its VC
>> front-end outputs some headers that have Unix EOLs and then the actual
>> diffs with DOS EOLs.
> The repository file (K3.xml,v) has Unix EOLs. But if I do a fresh
> checkout, I get a file K3.xml with DOS EOLs (I think this is the usual
> behavoir of the Windows cvs binaries[1] for text files unless you
> specify the switch "-ko"). However, in my workflow I overwrite the file
> with a Unix EOL file (exported from some application), do modifications,
> diffs and check it in.
Well, that's probably a good explanation for why you see the problem and
others don't: overwriting a file with another is not exaclty standard
practice in revision-control-systems. I'm surprised that CVS doesn't
consider that every line in the file is modified (AFAIK that's what it
does if you copy the DOS-EOL version of a file atop a Unix-EOL file).
IOW: don't do that. Either convince CVS to use Unix-EOLs on this file,
or use DOS-EOLs.
Stefan
next prev parent reply other threads:[~2009-10-05 18:45 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-16 18:08 bug#4451: 23.1; EOL problems with vc-diff and cygwin Reiner Steib
2009-09-16 20:56 ` Eli Zaretskii
2009-09-17 14:26 ` Reiner Steib
2009-09-17 16:35 ` Stefan Monnier
2009-09-17 17:22 ` Eli Zaretskii
2009-09-17 20:59 ` Stefan Monnier
2009-09-18 11:29 ` Reiner Steib
2009-09-24 17:00 ` Reiner Steib
2009-09-24 22:07 ` Stefan Monnier
2009-09-25 19:11 ` Eli Zaretskii
2009-09-26 8:27 ` Reiner Steib
2009-09-26 9:20 ` Eli Zaretskii
2009-09-27 0:36 ` Stefan Monnier
2009-09-27 7:38 ` Eli Zaretskii
2009-09-27 19:03 ` Stefan Monnier
2009-09-27 20:35 ` Reiner Steib
2009-09-28 1:08 ` Stefan Monnier
2009-10-05 16:07 ` Reiner Steib
2009-10-05 18:45 ` Stefan Monnier [this message]
2009-10-05 20:58 ` Eli Zaretskii
2010-07-15 7:22 ` Reiner Steib
2010-07-15 8:33 ` Eli Zaretskii
2010-07-16 6:51 ` Reiner Steib
2010-07-16 8:05 ` Andreas Schwab
2010-07-16 10:18 ` Eli Zaretskii
2010-07-19 7:23 ` Reiner Steib
2009-09-17 17:18 ` Eli Zaretskii
2009-09-18 11:31 ` Reiner Steib
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