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authorLibravatar Jeff King <peff@peff.net>2016-09-26 08:00:07 -0400
committerLibravatar Junio C Hamano <gitster@pobox.com>2016-09-26 11:46:41 -0700
commit59e4e34f6977f83c3a3842178da6358a5d130eb6 (patch)
treeb7a0219bfc313daefa6b023c8ba7d95a83cf0204 /gitk-git
parentget_short_sha1: refactor init of disambiguation code (diff)
downloadtgif-59e4e34f6977f83c3a3842178da6358a5d130eb6.tar.xz
get_short_sha1: NUL-terminate hex prefix
We store the hex prefix in a 40-byte buffer with the prefix itself followed by 40-minus-len "x" characters. These x's serve no purpose, and the lack of NUL termination makes the prefix string annoying to use. Let's just terminate it. Note that this is in contrast to the binary prefix, which _must_ be zero-padded, because we look at the whole thing during a binary search to find the first potential match in each pack index. The loose-object hex search cannot use the same trick because it has to do a linear walk through the unsorted results of readdir() (and even if it could, you'd want zeroes instead of x's). Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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