On Mon, Mar 14, 2011 at 03:29:51PM -0500, Neal Kreitzinger wrote:
> Is there a way to only reset the file permissions of the working-tree
> to match HEAD file permissions without resetting the content of the
> files?
Not directly, but you could munge a patch to do so and apply it in
reverse. For example:
git diff "$@" |
perl -ne '
if (/^diff/) { $diff = $_ }
elsif (/^old mode/) { print $diff, $_ }
elsif (/^new mode/) { print $_ }
' |
git apply -R
Which seems a little more complicated than it needs to be, but we don't
(AFAIK) have a way to say "show me only the mode changes from this
diff in an applicable form". The closest would be "git diff --summary",
but you cannot directly apply it (and I would hesitate to recommend
parsing it).
You could also use "git checkout -p", which is designed for exactly this
sort of picking-apart of a patch, but it has no way to specify "say yes
to all of the mode changes, no to everything else"; you have to manually
approve each hunk. Which doesn't work if you have a lot of these files.
I guess for mode changes, you don't care if you chmod something that is
already fine. So yet another way to do it would be:
git ls-files -sz |
perl -0ne '
/100(\d+).*?\t(.*)/ or next;
-e $2 or next;
chmod(oct($1), $2)
or die "chmod failed: $!";
'
Hope that helps,
-Peff
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