cookie support of w3m


                                                         (2000/11/07)  K. Okada
                                                        okabek@guitar.ocn.ne.jp

 * Support of version 0 (http://www.netscape.com/newsref/std/cookie_spec.html)
   and version 1 (http://www.ics.uci.edu/pub/ietf/http/rfc2109.txt,
   http://www.ics.uci.edu/pub/ietf/http/draft-ietf-http-state-man-mec-12.txt)
   cookie.
   
 * Cookie support is enabled by default in the configure script. If the
    configure script will not run, check that the USE_COOKIE macro is
    defined in config.h
    If you want to disable cookie support, run the configure script with
    --disable-cookie option.
   
 * You can choose whether or not to use cookies from the Option Setting Panel
    (normally bound to 'o') or -cookie and -no-cookie option.
   
 * You can disable cookies on the Option Setting Panel. When you do this,
    all new cookies will be rejected, however, cookies which were accepted
    before cookies were disabled will continue to be used.
   
 * You can see the list of accepted cookies with C-k. In this panel, you
    can choose to use each cookie or not.
   
 * You can specify domains from which to accept or not accept cookies
    on the Option Setting Panel. Domains are specified in the following format:
   
      domain-list = domains
                  | ""
      domains     = domain
                  | domain + "," + domains
      domain      = "." + domain-name      ; match with domain name
                  | host-domain-name       ; match with HDN
                  | ".local"               ; match with all HDN except which include  "."
                  | "."                    ; match with all

                              (HDN: host domain name)

For the following example, if the cookies for selected domain (.xxx.or.jp)
will be accepted then the settings would look like the following:
┌────────────────────────────────────┐
|Cookie Settings                     |
|                                    |
|Use Cookies            (*)ON ( )OFF |
|Accept Cookies         (*)ON ( )OFF |
|Use Problematic Cookies [discard]   |
|Reject Cookie Domain [.          ]  |
|Accept Cookie Domain [.xxx.or.jp ]  |
|                         [OK]       |
└────────────────────────────────────┘

 * If the number of "." in domain name is fewer than 2, it is
    assumed as invalid cookie (cf. RFC 2109 4.3.2), however, you can
    use cookie_avoid_wrong_number_of_dots to avoid this
    restriction. You can set this in "Domains to avoid [wrong number
    of dots]" on the Option Setting Panel.