dot = lastchar(word->s, word->e, '.');
dot = Str_rchri(word->s, word->e, '.');
VarSuffix(word, addSpace, buf, dummy)    struct Name *word;    Boolean	addSpace;    Buffer	buf;    void	*dummy		UNUSED;{    const char	*dot;    dot = lastchar(word->s, word->e, '.');    if (dot != NULL) {	if (addSpace)	    Buf_AddSpace(buf);	Buf_AddInterval(buf, dot+1, word->e);	addSpace = TRUE;    }    return addSpace;}