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[Bug-cpio] Stripping leading './' from symlink targets...

From: John Gregor
Subject: [Bug-cpio] Stripping leading './' from symlink targets...
Date: Thu, 7 Feb 2013 17:19:30 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.12) Gecko/20130108 Thunderbird/10.0.12

Hi All,

This is probably a philosophical/religious argument, but I contend that the stripping of leading './' pairs from a symlink target is a bug.  One could argue that 'foo' and './foo' are semantically identical when being interpreted as a path, but they are different strings and might be interpreted differently by other software.  But, it shouldn't be cpio's job to change the contents of a symlink.

I ran into this because I'm using cpio to move trees under revision control from one place to another.  The changing of the symlink is showing up as a metadata change.

To reproduce:

        mkdir cpio-vs-cp ; cd cpio-vs-cp
        mkdir orig
        ln -s ./something orig/foo
        ls -la orig
        cp -a orig cp-out
        ls -la cp-out
        mkdir cpio-out; (cd orig; find . -print0 | cpio -ov -0 -H newc) | (cd cpio-out; cpio -dvim)
        ls -la cpio-out

-John Gregor

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