Function tok822_quote_atom

lib_acl_cpp/src/mime/internal/tok822_parse.cpp:571–588

/* tok822_quote_atom - see if an atom needs quoting when externalized */

static void tok822_quote_atom(TOK822 *tp)
{
	char   *cp;
	int     ch;

	/*
	 * RFC 822 expects 7-bit data. Rather than quoting every 8-bit character
	 * (and still passing it on as 8-bit data) we leave 8-bit data alone.
	 */
	for (cp = acl_vstring_str(tp->vstr); (ch = *(unsigned char *) cp) != 0; cp++) {
		if ( /* !ISASCII(ch) || */ ch == ' '
			|| ACL_ISCNTRL(ch) || strchr(tok822_opchar, ch))
		{
			tp->type = TOK822_QSTRING;
			break;
		}
	}
}

/* tok822_comment - tokenize comment */