This file is indexed.

/usr/share/cups/ppd-updaters/printer-driver-escpr.ppd-updater is in printer-driver-escpr 1.4.1-2.

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

The actual contents of the file can be viewed below.

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DRIVER_REGEXP='^escpr:'
GENNICKNAME_REGEXP=''