This file is indexed.

/usr/share/cups/ppd-updaters/splix.ppd-updater is in printer-driver-splix 2.0.0+svn315-4.

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

The actual contents of the file can be viewed below.

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DRIVER_REGEXP='^drv:///splix-[a-zA-Z0-9]*\.drv/'
GENNICKNAME_REGEXP='s/,(\s*SpliX|)(\s*V\.?|)\s*[\d\.]*$//i'