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Fix pgindent comment breakage
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@ -476,11 +476,15 @@ visibilitymap_truncate(Relation rel, BlockNumber nheapblocks)
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/* Clear out the unwanted bytes. */
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MemSet(&map[truncByte + 1], 0, MAPSIZE - (truncByte + 1));
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/*
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/*----
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* Mask out the unwanted bits of the last remaining byte.
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*
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* ((1 << 0) - 1) = 00000000 ((1 << 1) - 1) = 00000001 ... ((1 << 6) -
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* 1) = 00111111 ((1 << 7) - 1) = 01111111
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* ((1 << 0) - 1) = 00000000
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* ((1 << 1) - 1) = 00000001
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* ...
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* ((1 << 6) - 1) = 00111111
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* ((1 << 7) - 1) = 01111111
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*----
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*/
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map[truncByte] &= (1 << truncBit) - 1;
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