This file is indexed.

/usr/lib/R/site-library/pbapply/INDEX is in r-cran-pbapply 1.3-1-1.

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

The actual contents of the file can be viewed below.

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pbapply                 Adding Progress Bar to '*apply' Functions
pboptions               Creating Progress Bar and Setting Options
splitpb                 Divide Tasks for Progress-bar Friendly
                        Distribution in a Cluster
timerProgressBar        Timer Progress Bar