fish-shell/share/functions/open.fish

#
# This allows us to use 'open FILENAME' to open a given file in the default
# application for the file.
#

if not command -sq open
    function open --description "Open file in default application"
        if count $argv >/dev/null
            switch $argv[1]
                case -h --h --he --hel --help
                    __fish_print_help open
                    return 0
            end
        end

        if type -q -f cygstart
            for i in $argv
                cygstart $i
            end
        else if type -q -f xdg-open
            for i in $argv
                xdg-open $i
            end
        else
            echo (_ 'No open utility found. Try installing "xdg-open" or "xdg-utils".')
        end
    end
end