diff --git a/share/completions/tokei.fish b/share/completions/tokei.fish
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+# Written against `tokei --help`, version 10.0.1 compiled with support for CBOR, JSON, and YAML
+
+function __fish_tokei_supported_serializations
+    # Expecting a line like:
+    # tokei 10.0.1 compiled with serialization support: cbor, json, yaml
+    command tokei --help | grep 'with serialization support' | cut -d : -f 2 | string trim | string split ', '
+end
+
+complete -c tokei    -s f -l files            -d 'Print out statistics for individual files'
+complete -c tokei -f -s h -l help             -d 'Print help information'
+complete -c tokei         -l hidden           -d 'Count hidden files, too'
+complete -c tokei -f -s l -l languages        -d 'Print out supported languages'
+complete -c tokei         -l no-ignore        -d 'Don’t respect ignore files'
+complete -c tokei         -l no-ignore-parent -d 'Don’t respect ignore files in parent directories'
+complete -c tokei         -l no-ignore-vcs    -d 'Don’t respect version-control ignore files'
+complete -c tokei -f -s V -l version          -d 'Print version information'
+complete -c tokei    -s v -l verbose          -d 'Increase log output level'
+
+# Options
+complete -c tokei -x -s c -l columns                                               -d 'Set column width for terminal output'
+complete -c tokei -x -s e -l exclude                                               -d 'Ignore all files and directories containing this word'
+complete -c tokei -r -s i -l input                                                 -d 'Gives statistics from a previous Tokei run'
+complete -c tokei -x -s o -l output  -a  '(__fish_tokei_supported_serializations)' -d 'Choose output format'
+complete -c tokei -x -s s -l sort    -ka 'files lines code comments blanks'        -d 'Sort languages based on column'
+complete -c tokei -x -s t -l type    -a  '(command tokei --languages)'             -d 'Filters output by language type, comma-separated'