From: Stephen White <spwhite@...>
Date: 2001-02-18T20:24:48+09:00
Subject: [ruby-talk:11044] Re: to_s and <<

On Sun, 18 Feb 2001, David Alan Black wrote:

>   rb_str_append(str1, str2)

In Init_String, it has:

    rb_define_method(rb_cString, "<<", rb_str_concat, 1);

so I don't think rb_str_append is the one being called to append to a
string, regardless of the name.

VALUE
rb_str_concat(str1, str2)
    VALUE str1, str2;
{
    if (FIXNUM_P(str2)) {
        int i = FIX2INT(str2);
        if (0 <= i && i <= 0xff) { /* byte */
            char c = i;
            return rb_str_cat(str1, &c, 1);
        }
    }
    str1 = rb_str_append(str1, str2);

    return str1;
}

implements the observed behaviour.

I can't find any rb_define_method for rb_str_append, so it's probably an
internal method only.

-- 
  spwhite@chariot.net.au