autoconf ^M vs echo+tr

[Török Edwin]

Hi,

Regenerating configure with version 2.63 gives me:
-ac_cr=`echo X | tr X '\015'`
+ac_cr='^M'

I thought the echo + tr was more portable, and it also works better with
various tools that adjust newlines (like SVN with certain props set).

With the configure that has ^M I can't even svn diff, because:

svn: File 'configure' has inconsistent newlines
svn: Inconsistent line ending style

Properties on 'configure':
  svn:executable
  cvs2svn:cvs-rev
  svn:keywords
  svn:eol-style

Was there a problem with the echo+tr combination?

Best regards,
--Edwin