This file is indexed.

/usr/share/language-tools/language-validate is in accountsservice 0.6.43-1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
#!/bin/sh -e

lang=$1
validated_language=

test -n "$lang" || exit 1

langtoolsdir=/usr/share/language-tools

#
# discard possible fallback languages
#
lang=${lang%%:*}

#
# remove possible encoding part
#
if [ $lang != ${lang%.utf8*} ]; then
    lang=${lang%.*}${lang#*.utf8}
elif [ $lang != ${lang%.UTF-8*} ]; then
    lang=${lang%.*}${lang#*.UTF-8}
fi

#
# make sure that the output is a valid language option
#
options=$( $langtoolsdir/language-options )

# exact match
for opt in $options; do
    if [ $opt = $lang ]; then
        validated_language=$lang
        break
    fi
done

if [ -z "$validated_language" ]; then
    langcode=${lang%%[_@]*}

    # try the "main" country code if any
    main_country=
    while read line; do
        if [ "${line%%[[:space:]]*}" = $langcode ]; then
            main_country=${line##*[[:space:]]}
            if [ $lang != ${lang#*@} ]; then
                main_country=$main_country@${lang#*@}
                is_variant=true
            fi
            break
        fi
    done < $langtoolsdir/main-countries
    if [ -n "$main_country" ]; then
        for opt in $options; do
            if [ $main_country = $opt ]; then
                validated_language=$main_country
                break
            fi
        done
    fi

    # try out fitting language option without paying regard to
    # country code or variant
    if [ -z "$validated_language" ]; then
        for opt in $options; do
            if [ "${opt%%[_@]*}" = $langcode -a $langcode != 'zh' ]; then
                validated_language=$opt
                break
            fi
        done
    fi
fi

if [ -z "$validated_language" ]; then
    validated_language='en'
fi

echo $validated_language