On Tue, Jan 19, 2016 at 04:51:00PM -0500, Jeff King wrote:
> Here's the patch I came up with. It takes the conservative choice (see
> the argument below), and shows the performance impact. I'll work up the
> non-conservative one on top, which I think can do even better than the
> original.
Oh, never mind. I had thought we could do away with _both_ rev-parses
and compare "foo^{tree}" to "foo^{tree}".
But of course that does not work. Because it is really "$commit^{tree}"
versus "$parent^{tree}" here. I need to update the commit message below.
We could get away "git diff --exit-code $1 $2" to do a single process
invocation (rather than two rev-parses), but I don't know if it is worth
the complexity.
-Peff
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