thodg/libgit2/src

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  • Hash : 626f9e24
    Author : Edward Thomson
    Date : 2015-12-03T16:27:15 

    index: canonicalize inserted paths safely

When adding to the index, we look to see if a portion of the given
path matches a portion of a path in the index.  If so, we will use
the existing path information.  For example, when adding `foo/bar.c`,
if there is an index entry to `FOO/other` and the filesystem is case
insensitive, then we will put `bar.c` into the existing tree instead
of creating a new one with a different case.

Use `strncmp` to do that instead of `memcmp`.  When we `bsearch`
into the index, we locate the position where the new entry would
go.  The index entry at that position does not necessarily have
a relation to the entry we're adding, so we cannot make assumptions
and use `memcmp`.  Instead, compare them as strings.

When canonicalizing paths, we look for the first index entry that
matches a given substring.

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