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possible 'git cp'/how does git detect copies

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From: Mircea Bardac
Subject: possible 'git cp'/how does git detect copies
Date: Friday, June 27, 2008 - 5:40 am

I was looking today at duplicating a file but, I soon realized that 
there is no 'git cp' command (this was the "deductive approach to git 
commands", starting from git mv/rm/...). How does "git diff -C" detect 
copies (-C is used for this, according to the documentation)?

On a very simple test, I couldn't see this working. I just copied one 
file, added it, committed the change, ran "git diff -C HEAD^!". There is 
no place saying that it's contents is copied from some other file (both 
files are in the repository now).

"git blame -C new_copied_file" also doesn't show the commits for the 
original file.

This is all with 1.5.6.1.

I am probably missing something here... but I can't produce an example 
of copied contents that actually works. Any hint would be appreciated.

I found this older thread [1] on "git cp" but the discussion appears to 
have stalled at some point. If there is indeed no use of a "git cp" 
command, I would like at least some info on how content copies are being 
detected, since I haven't seen this working.

[1] http://kerneltrap.org/mailarchive/git/2008/2/3/705424


Many thanks,
Mircea

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Messages in current thread:
possible 'git cp'/how does git detect copies, Mircea Bardac, (Fri Jun 27, 5:40 am)
Re: possible 'git cp'/how does git detect copies, Santi Béjar, (Fri Jun 27, 5:57 am)
Re: possible 'git cp'/how does git detect copies, Pierre Habouzit, (Fri Jun 27, 6:00 am)
Re: possible 'git cp'/how does git detect copies, Johannes Sixt, (Fri Jun 27, 6:05 am)
Re: possible 'git cp'/how does git detect copies, Miklos Vajna, (Fri Jun 27, 6:09 am)
Re: possible 'git cp'/how does git detect copies, Mircea Bardac, (Fri Jun 27, 6:16 am)