string_trim

COPY/// string_trim(str)
//
//  Returns the given string with whitespace stripped from its start 
//  and end. Whitespace is defined as SPACE, HT, LF, VT, FF, CR.
//
//      str         text, string
//
/// gmlscripts.pro/license
{
    var str,l,r,o;
    str = argument0;
    l = 1;
    r = string_length(str);
    repeat (r) {
        o = ord(string_char_at(str,l));
        if ((o > 8) && (o < 14) || (o == 32)) l += 1;
        else break;
    }
    repeat (r-l) {
        o = ord(string_char_at(str,r));
        if ((o > 8) && (o < 14) || (o == 32)) r -= 1;
        else break;
    }
    return string_copy(str,l,r-l+1);
}