Re: Something like $Id$, $Revision$ or $Date$?

On Mon, Nov 10, 2008 at 6:46 AM, Michal Nazarewicz [off-list ref] wrote:

quoted

I would like the "$Id$" sequences to be updated automatically after
a commit (ie. without the need to check out).

dhruva [off-list ref] writes:

There is no direct way to get this $Id$ expansion in git, however you
can use a simple pre-commit hook (alpha state, more a proof of concept
that happens to work for me)

#!/usr/bin/env bash

for file in `git diff-index --name-only --diff-filter=AM HEAD` ; do
        perl -pi -e 's/(\$[ \t]*Id)(.*)([ \t]*\$)/"\$Id: git
".time()." \$"/e' ${file}
        git add ${file} > /dev/null
done

In fact the following works just as well:

#v+
files=$(git diff-index --name-only --diff-filter=AM HEAD)
perl -pi -e 's/\$\s*Id.*?\$/\$Id: git '$(TZ=UTC date +%s)' \$/g' $files
git add $files
#v-

But then again, it has two unpleasant side effects: (i) all modified
files are added and (ii) if I abort a commit the file stays modified.
(i) can be fixed by removing "git add" but then again (iii) even files
which are not committed will be modified.

-- 
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