Can I obtain from git the sha1 of the total last state of the
repo excluding history ? This is a state that covers contents and
names of all files and dirs, and x perm of files;
but excludes history, timestamps, ownerhisp, and inode numbers.
That would be approximately like the slow method:
'find | egrep -v '/\.git(/|$)' | sort | Xcpio -o | sha1sum -'
(imagining Xcpio that does not archive any ownership, timestamps,
and inode numbers). Can I obtain this result immediately from git ?
Yakov
Yakov Lerner [off-list ref] wrote:
Can I obtain from git the sha1 of the total last state of the
repo excluding history ? This is a state that covers contents and
names of all files and dirs, and x perm of files;
but excludes history, timestamps, ownerhisp, and inode numbers.
That would be approximately like the slow method:
'find | egrep -v '/\.git(/|$)' | sort | Xcpio -o | sha1sum -'
(imagining Xcpio that does not archive any ownership, timestamps,
and inode numbers). Can I obtain this result immediately from git ?
git rev-parse HEAD^{tree}
The trick here is ^{tree}; this operator takes a commit-ish (commit
or tag) and returns the SHA-1 of the tree that the commit-ish
points at. That SHA-1 is the SHA-1 of the file contents, names,
and executable bits, but nothing else. No history.
I use it sometimes after a rebase when I reorganize history:
old=`git rev-parse HEAD^{tree}`
.... do rebasing magick ...
test $old = `git rev-parse HEAD^{tree}` && echo GOOD
If I don't get back GOOD then I know I somehow changed the files in
a way that isn't what I had before, and that wasn't what I wanted
if all I was doing was cleaning up commit messages.
--
Shawn.