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There are several utility functions (hashcmp and friends) that are used for comparing object IDs (SHA-1 values). Using these functions, which take pointers to unsigned char, with struct object_id requires tiresome access to the sha1 member, which bloats code and violates the desired encapsulation. Provide wrappers around these functions for struct object_id for neater, more maintainable code. Use the new constants to avoid the hard-coded 20s and 40s throughout the original functions. These functions simply call the underlying pointer-to-unsigned-char versions to ensure that any performance improvements will be passed through to the new functions. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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