This file is indexed.

/usr/lib/R/site-library/polyclip/INDEX is in r-cran-polyclip 1.5-6-1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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polyclip                Polygon Clipping
polylineoffset          Polygonal Line Offset
polyminkowski           Minkowski Sum of Polygon with Path
polyoffset              Polygon Offset
polysimplify            Remove Self-Intersections from a Polygon