I have a string of a variable length and I need to split the string in strings of 6 characters . But if the 6th character is not space then I must split the string at possition before the 6th character. For example: if the main string S is S='abcde fghc ijkl mnop' the result should be abcde fghc ijkl mnop Do you have any idea how it can be done? Thank you L.