This file is indexed.

/usr/share/yacas/io.rep/code.ys is in yacas 1.3.3-2.

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

The actual contents of the file can be viewed below.

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/// stuff related to input-output during interactive sessions

/// simple prettyprinter
Use("io.rep/print.ys");

/// global error reporting and handling
Use("io.rep/errors.ys");

/// ascii formula prettyprinter
Use("io.rep/formula.ys");