Invoke python correctly from windows.

Invoke python correctly from windows.

BUG=158663
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=189084

[szager1, 2013-03-19 20:17:41]

I prefer this to:

https://codereview.chromium.org/12494021

... because it changes only the code used by the submodule flow.

[scottmg, 2013-03-19 20:21:17]

I only understand about half of those escapes, so I'm going to leave this to
M-A. I have no preference for this vs. my patch either way.

[iannucci, 2013-03-19 20:29:23]

drive-by :). This lgtm (assuming you tested on mingw)

https://codereview.chromium.org/12941002/diff/1/git-runhooks
File git-runhooks (right):

https://codereview.chromium.org/12941002/diff/1/git-runhooks#newcode17
git-runhooks:17: dir="${0%\\*}"
why not dirname? Is it not available?

[szager1, 2013-03-19 20:31:37]

https://codereview.chromium.org/12941002/diff/1/git-runhooks
File git-runhooks (right):

https://codereview.chromium.org/12941002/diff/1/git-runhooks#newcode17
git-runhooks:17: dir="${0%\\*}"
On 2013/03/19 20:29:24, iannucci wrote:
> why not dirname? Is it not available?

dirname is hard-coded to look for '/', but $0 will be a windows-style path.

[iannucci, 2013-03-19 20:34:33]

On 2013/03/19 20:31:37, szager1 wrote:
> https://codereview.chromium.org/12941002/diff/1/git-runhooks
> File git-runhooks (right):
> 
> https://codereview.chromium.org/12941002/diff/1/git-runhooks#newcode17
> git-runhooks:17: dir="${0%\\*}"
> On 2013/03/19 20:29:24, iannucci wrote:
> > why not dirname? Is it not available?
> 
> dirname is hard-coded to look for '/', but $0 will be a windows-style path.

That's awful :(. I would have thought that dirname would be smart enough to
figure it out...

[commit-bot: I haz the power, 2013-03-19 20:35:37]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/szager@chromium.org/12941002/1

[commit-bot: I haz the power, 2013-03-19 20:38:11]

Change committed as 189084