This file is indexed.

/usr/lib/R/site-library/energy/INDEX is in r-cran-energy 1.6.2-1.

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

The actual contents of the file can be viewed below.

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dcor                    Distance Correlation and Covariance Statistics
dcor.ttest              Distance Correlation t-Test
dcov.test               Distance Covariance Test
disco                   distance components (DISCO)
edist                   E-distance
energy-package          E-statistics (energy statistics)
energy.hclust           Hierarchical Clustering by Minimum (Energy)
                        E-distance
eqdist.etest            Multisample E-statistic (Energy) Test of Equal
                        Distributions
indep.etest             Energy Statistic Test of Independence
indep.test              Energy Statistic Tests of Independence
mvI.test                Energy Statistic Test of Independence
mvnorm.etest            E-statistic (Energy) Test of Multivariate
                        Normality
poisson.mtest           Mean Distance Test for Poisson Distribution