typedef struct string * hdr_decode_from_header P_((header_list_ptr hdr,
						   int demime,
						   charset_t defcharset));

typedef int hdr_add_to_mailing_hdr P_((struct mailing_headers * headers,
				       header_ptr X,
				       const char *value,
				       int demime,
				       charset_t defcharset,
				       int replace));

struct header_info {
    char * header;
    
    hdr_decode_from_header    * hdr_decode_from_it;
    hdr_add_to_mailing_hdr    * hdr_add_to_it;
};


#define MAIL_HDR_magic          0xFC01
#define EXP_ADDR_magic          0xFC02


int add_from_hdr P_((struct mailing_headers * headers,
		     header_ptr X,
		     const char *value,
		     int demime,
		     charset_t defcharset,
		     int replace));
int add_to_hdr P_((struct mailing_headers * headers,
		     header_ptr X,
		     const char *value,
		     int demime,
		     charset_t defcharset,
		     int replace));
int add_cc_hdr P_((struct mailing_headers * headers,
		     header_ptr X,
		     const char *value,
		     int demime,
		     charset_t defcharset,
		     int replace));
int add_bcc_hdr P_((struct mailing_headers * headers,
		     header_ptr X,
		     const char *value,
		     int demime,
		     charset_t defcharset,
		     int replace));
int add_replyto_hdr P_((struct mailing_headers * headers,
		     header_ptr X,
		     const char *value,
		     int demime,
		     charset_t defcharset,
		     int replace));
int add_subject_hdr P_((struct mailing_headers * headers,
		     header_ptr X,
		     const char *value,
		     int demime,
		     charset_t defcharset,
		     int replace));
int add_user_hdr P_((struct mailing_headers * headers,
		     header_ptr X,
		     const char *value,
		     int demime,
		     charset_t defcharset,
		     int replace));
int add_env_from_hdr P_((struct mailing_headers * headers,
			 header_ptr X,
			 const char *value,
			 int demime,
			 charset_t defcharset,
			 int replace));

/* ---- */

typedef int env_from_change_hook P_((struct mailer_env_from *X,
				     const char * value));
extern void set_env_from_change_hook P_((env_from_change_hook *hook));

/*
 * Local Variables:
 *  mode:c
 *  c-basic-offset:4
 *  buffer-file-coding-system: iso-8859-1
 * End:
 */