On Nov 10, 2008, at 3:32 PM, Jakub Narebski wrote:

quoted text
> Dnia poniedziałek 10. listopada 2008 21:24, Francis Galiegue  
> napisał:
>> Le Monday 10 November 2008 21:17:29 Jakub Narebski, vous avez  
>> écrit :
>
>>> Well, _some_ command has to be invoked to expand keywords. "git add"
>>> doesn't do that (perhaps it should?), so you need to use checkout.
>>>
>>
>> If "git add" aims to do that, you'd have to be very, VERY careful,  
>> not to
>> substitute in the wrong place to start with, not to attempt  
>> substitution in
>> binary files...
>>
>> And this would have a sizeable cost, imho. If you really want to do  
>> this,
>> isn't there a hook somewhere that can do that for you, instead of  
>> modifying
>> git add directly?
>
> If I remember correctly there was idea to add 'pre-add' or 'post-add'
> hook...

Without adding any additional hooks, you could use the post-commit  
hook to look for any added/changed files containing $Id$ lines and  
force a checkout of them.

Perhaps something as simple as the following in your .git/hooks/post- 
commit (untested, caveat emptor, YMMV):

git diff --name-only --diff-filter=AM HEAD^ HEAD | \
while read file; do
   rm "$file" && git checkout -- "$file"
end

~~ Brian--
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