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* How git detects changes during commit?
@ 2010-10-27 20:36 longphant
  2010-10-27 20:54 ` Jonathan Nieder
  0 siblings, 1 reply; 3+ messages in thread
From: longphant @ 2010-10-27 20:36 UTC (permalink / raw)
  To: git


Say you check out a directory of 100 files. You edit 5 of the files, and you
go to commit the directory back. How does git know which of the 100 files
were modified (not all of them were)?
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* Re: How git detects changes during commit?
  2010-10-27 20:36 How git detects changes during commit? longphant
@ 2010-10-27 20:54 ` Jonathan Nieder
  2010-10-28 17:23   ` longphant
  0 siblings, 1 reply; 3+ messages in thread
From: Jonathan Nieder @ 2010-10-27 20:54 UTC (permalink / raw)
  To: longphant; +Cc: git

Hi,

longphant wrote:

> Say you check out a directory of 100 files. You edit 5 of the files, and you
> go to commit the directory back. How does git know which of the 100 files
> were modified (not all of them were)?

The lstat system call.  See the git-update-index(1) manual for some
hints (since most high-level commands do the equivalent of
"git update-index --refresh -q" before working with the work tree).

Hope that helps,
Jonathan

^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: How git detects changes during commit?
  2010-10-27 20:54 ` Jonathan Nieder
@ 2010-10-28 17:23   ` longphant
  0 siblings, 0 replies; 3+ messages in thread
From: longphant @ 2010-10-28 17:23 UTC (permalink / raw)
  To: git


Thanks, that is a lot of help. I am a complete noob to version control, so I
was wondering if you could give me a noobie tutorial of how it works. Does
git lstat each file that is committed and then check the time of last
modification? Or does it lstat the directory?
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2010-10-27 20:36 How git detects changes during commit? longphant
2010-10-27 20:54 ` Jonathan Nieder
2010-10-28 17:23   ` longphant

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