This file is indexed.

/usr/share/xindy/lang/german/braille-utf8.xdy is in xindy-rules 2.4-1.1.

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

The actual contents of the file can be viewed below.

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;; Rules for xindy; generated by make-rules.pl
;; language: German

(define-letter-group "⠁" :prefixes ("�"))
(define-letter-group "⠃" :after "⠁" :prefixes ("�"))
(define-letter-group "⠉" :after "⠃" :prefixes ("�"))
(define-letter-group "⠙" :after "⠉" :prefixes ("�"))
(define-letter-group "⠑" :after "⠙" :prefixes ("�"))
(define-letter-group "⠋" :after "⠑" :prefixes ("�"))
(define-letter-group "⠛" :after "⠋" :prefixes ("�"))
(define-letter-group "⠓" :after "⠛" :prefixes ("�"))
(define-letter-group "⠊" :after "⠓" :prefixes ("�"))
(define-letter-group "⠚" :after "⠊" :prefixes ("�"))
(define-letter-group "⠅" :after "⠚" :prefixes ("�"))
(define-letter-group "⠇" :after "⠅" :prefixes ("�"))
(define-letter-group "⠍" :after "⠇" :prefixes ("�"))
(define-letter-group "⠝" :after "⠍" :prefixes ("�"))
(define-letter-group "⠕" :after "⠝" :prefixes ("�"))
(define-letter-group "⠏" :after "⠕" :prefixes ("�"))
(define-letter-group "⠟" :after "⠏" :prefixes ("�"))
(define-letter-group "⠗" :after "⠟" :prefixes ("�"))
(define-letter-group "⠎" :after "⠗" :prefixes ("�"))
(define-letter-group "⠞" :after "⠎" :prefixes ("�"))
(define-letter-group "⠥" :after "⠞" :prefixes ("�"))
(define-letter-group "⠧" :after "⠥" :prefixes ("�"))
(define-letter-group "⠺" :after "⠧" :prefixes ("�"))
(define-letter-group "⠭" :after "⠺" :prefixes ("�"))
(define-letter-group "⠽" :after "⠭" :prefixes ("�"))
(define-letter-group "⠵" :after "⠽" :prefixes ("�"))

(define-rule-set "de-alphabetize"

  :rules  (("⠁" "�" :string)
           ("⠜" "�" :string)
           ("⠡" "��" :string)
           ("⠌" "��" :string)
           ("⠃" "�" :string)
           ("⠉" "�" :string)
           ("⠹" "��" :string)
           ("⠙" "�" :string)
           ("⠑" "�" :string)
           ("⠩" "��" :string)
           ("⠣" "��" :string)
           ("⠋" "�" :string)
           ("⠛" "�" :string)
           ("⠓" "�" :string)
           ("⠊" "�" :string)
           ("⠬" "��" :string)
           ("⠚" "�" :string)
           ("⠅" "�" :string)
           ("⠇" "�" :string)
           ("⠍" "�" :string)
           ("⠝" "�" :string)
           ("⠕" "�" :string)
           ("⠪" "�" :string)
           ("⠏" "�" :string)
           ("⠟" "�" :string)
           ("⠗" "�" :string)
           ("⠎" "�" :string)
           ("⠱" "І�" :string)
           ("⠮" "��" :string)
           ("⠾" "��" :string)
           ("⠞" "�" :string)
           ("⠥" "�" :string)
           ("⠳" "�" :string)
           ("⠧" "�" :string)
           ("⠺" "�" :string)
           ("⠭" "�" :string)
           ("⠽" "�" :string)
           ("⠵" "�" :string)
           ))

(define-rule-set "de-resolve-diacritics"

  :rules  (("⠞" "�" :string)
           ("⠋" "�" :string)
           ("⠍" "�" :string)
           ("⠁" "�" :string)
           ("⠵" "�" :string)
           ("⠚" "�" :string)
           ("⠽" "�" :string)
           ("⠓" "�" :string)
           ("⠟" "�" :string)
           ("⠛" "�" :string)
           ("⠥" "�" :string)
           ("⠑" "�" :string)
           ("⠕" "�" :string)
           ("⠉" "�" :string)
           ("⠏" "�" :string)
           ("⠗" "�" :string)
           ("⠊" "�" :string)
           ("⠅" "�" :string)
           ("⠙" "�" :string)
           ("⠎" "�" :string)
           ("⠇" "�" :string)
           ("⠝" "�" :string)
           ("⠧" "�" :string)
           ("⠃" "�" :string)
           ("⠭" "�" :string)
           ("⠺" "�" :string)
           ("⠳" "�" :string)
           ("⠜" "�" :string)
           ("⠪" "�" :string)
           ("⠱" "�" :string)
           ("⠾" "�" :string)
           ("⠩" "�" :string)
           ("⠡" "�" :string)
           ("⠮" "�" :string)
           ("⠌" "�" :string)
           ("⠹" "�" :string)
           ("⠬" "�" :string)
           ("⠣" "�" :string)
           ))

(define-rule-set "de-resolve-case"

  :rules  (("⠞" "9" :string)
           ("⠋" "9" :string)
           ("⠍" "9" :string)
           ("⠁" "9" :string)
           ("⠵" "9" :string)
           ("⠚" "9" :string)
           ("⠽" "9" :string)
           ("⠓" "9" :string)
           ("⠟" "9" :string)
           ("⠛" "9" :string)
           ("⠥" "9" :string)
           ("⠑" "9" :string)
           ("⠕" "9" :string)
           ("⠉" "9" :string)
           ("⠳" "9" :string)
           ("⠜" "9" :string)
           ("⠏" "9" :string)
           ("⠗" "9" :string)
           ("⠊" "9" :string)
           ("⠅" "9" :string)
           ("⠙" "9" :string)
           ("⠎" "9" :string)
           ("⠪" "9" :string)
           ("⠇" "9" :string)
           ("⠝" "9" :string)
           ("⠧" "9" :string)
           ("⠃" "9" :string)
           ("⠭" "9" :string)
           ("⠺" "9" :string)
           ("⠾" "99" :string)
           ("⠩" "99" :string)
           ("⠡" "99" :string)
           ("⠮" "99" :string)
           ("⠌" "99" :string)
           ("⠹" "99" :string)
           ("⠬" "99" :string)
           ("⠣" "99" :string)
           ("⠱" "999" :string)
           ))

(define-rule-set "de-ignore-special"

  :rules  (("⠐⠂" "" :string)
           ("⠂" "" :string)
           ("⠄" "" :string)
           ("⠠" "" :string)
           ("⠴" "" :string)
           ("⠢" "" :string)
           ("⠆" "" :string)
           ("⠨" "" :string)
           ("⠖" "" :string)
           ("⠦" "" :string)
           ("⠶" "" :string)
           ("⠔" "" :string)
           ("⠈" "" :string)
           ("⠤" "" :string)
           ("⠘" "" :string)
           ("⠼" "" :string)
           ("⠒" "" :string)
           ("⠸" "" :string)
           ))

(define-rule-set "de-resolve-special"

  :rules  (("⠐⠂" "�" :string)
           ("⠂" "�" :string)
           ("⠆" "�" :string)
           ("⠒" "�" :string)
           ("⠢" "�" :string)
           ("⠖" "�" :string)
           ("⠶" "�" :string)
           ("⠦" "�" :string)
           ("⠔" "�" :string)
           ("⠴" "�" :string)
           ("⠄" "�" :string)
           ("⠤" "�" :string)
           ("⠞" "�" :string)
           ("⠋" "�" :string)
           ("⠍" "�" :string)
           ("⠁" "�" :string)
           ("⠵" "�" :string)
           ("⠚" "�" :string)
           ("⠽" "�" :string)
           ("⠓" "�" :string)
           ("⠟" "�" :string)
           ("⠛" "�" :string)
           ("⠥" "�" :string)
           ("⠑" "�" :string)
           ("⠕" "�" :string)
           ("⠉" "�" :string)
           ("⠳" "�" :string)
           ("⠜" "�" :string)
           ("⠏" "�" :string)
           ("⠗" "�" :string)
           ("⠊" "�" :string)
           ("⠅" "�" :string)
           ("⠙" "�" :string)
           ("⠎" "�" :string)
           ("⠪" "�" :string)
           ("⠇" "�" :string)
           ("⠝" "�" :string)
           ("⠧" "�" :string)
           ("⠃" "�" :string)
           ("⠭" "�" :string)
           ("⠺" "�" :string)
           ("⠾" "��" :string)
           ("⠩" "��" :string)
           ("⠡" "��" :string)
           ("⠮" "��" :string)
           ("⠌" "��" :string)
           ("⠹" "��" :string)
           ("⠬" "��" :string)
           ("⠣" "��" :string)
           ("⠱" "���" :string)
           ("⠈" "�" :string)
           ("⠘" "�" :string)
           ("⠸" "�" :string)
           ("⠨" "�" :string)
           ("⠠" "�" :string)
           ("⠼" "�" :string)
           ))