fish-shell/share/functions/fish_vi_cursor.fish

function fish_vi_cursor -d 'Set cursor shape for different vi modes'
    set -l terminal $argv[1]
    set -q terminal[1]; or set terminal auto

    switch "$terminal"
        case auto
            if set -q KONSOLE_PROFILE_NAME
                set terminal konsole
            else if set -q XTERM_LOCALE
                set terminal xterm
            else
                #echo Not found
                return 1
            end
    end

    set -l command
    set -l start
    set -l end
    set -l shape_block
    set -l shape_line
    set -l shape_underline
	switch "$terminal"
        case konsole iterm
            set command echo -en
            set start "\e]50;"
            set end "\x7"
            set shape_block 'CursorShape=0'
            set shape_line 'CursorShape=1'
            set shape_underline 'CursorShape=2'
        case xterm
            set command echo -en
            set start '\e['
            set end ' q'
            set shape_block '2'
            set shape_underline '4'
            set shape_line '6'
	end
    if not set -q command[1]
        #echo not found
        return 1
    end
    set -g fish_cursor_insert  $start$shape_line$end
    set -g fish_cursor_default $start$shape_block$end
    set -g fish_cursor_other   $start$shape_block$end

    echo "
	function fish_vi_cursor_handle --on-variable fish_bind_mode
		switch \$fish_bind_mode
			case insert
				$command \$fish_cursor_insert
			case default
				$command \$fish_cursor_default
			case '*'
				$command \$fish_cursor_other
		end
	end
    " | source
end