CamelCase в Seed7

$ include "seed7_05.s7i";

const proc: main is func
local
    var string: text is "";
    var string: camel_case is "";
    var char: ch is ' ';
    var boolean: was_space is TRUE;
begin
    readln(text);
    text := lower(text);
    for ch range text do
        if ch in {'a' .. 'z'} then
            if was_space then
                ch := upper(ch);
            end if;
            camel_case &:= ch;
            was_space := FALSE;
        else
            was_space := TRUE;
        end if;
    end for;
    writeln(camel_case);
end func;