blame: handle --first-parent
The revision.c options-parser will parse "--first-parent" for us, but the blame code does not actually respect it, as we simply iterate over the whole list returned by first_scapegoat(). We can fix this by returning a truncated parent list. Note that we could technically also do so by limiting the return value of num_scapegoats(), but that is less robust. We would rely on nobody ever looking at the "next" pointer from the returned list. Combining "--reverse" with "--first-parent" is more complicated, and will probably involve cooperation from revision.c. Since the desired semantics are not even clear, let's punt on this for now, but explicitly disallow it to avoid confusing users (this is not really a regression, since it did something nonsensical before). Signed-off-by: NJeff King <peff@peff.net> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
Showing
想要评论请 注册 或 登录