This file is indexed.

/usr/share/GvRng/gvr_progs/escape.gvr is in gvrng 4.4-1.

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

The actual contents of the file can be viewed below.

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#
define turnright:
    do 3:
        turnleft

define sidestep_right:
    turnright
    move
    turnleft

define sidestep_back_left:
    turnleft
    move
    turnright

define shuffle:
    sidestep_right
    if front_is_clear:
        sidestep_back_left
        move

define go_to_wall:
    while front_is_clear:
        if right_is_blocked:
            turnright
        else:
            shuffle

define follow_perimeter:
    if front_is_clear:
        move
    else:
        turnleft

define follow_until_door_is_on_right:
    while right_is_blocked:
        follow_perimeter

define exit_door:
    turnright
    move

go_to_wall
turnleft
follow_until_door_is_on_right
exit_door
turnoff