checkout: implement "@{-N}" shortcut name for N-th last branch
Implement a shortcut @{-N} for the N-th last branch checked out, that works by parsing the reflog for the message added by previous git-checkout invocations. We expand the @{-N} to the branch name, so that you end up on an attached HEAD on that branch. Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -361,8 +361,14 @@ struct branch_info {
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static void setup_branch_path(struct branch_info *branch)
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{
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struct strbuf buf = STRBUF_INIT;
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strbuf_addstr(&buf, "refs/heads/");
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strbuf_addstr(&buf, branch->name);
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if (!interpret_nth_last_branch(branch->name, &buf)) {
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branch->name = xstrdup(buf.buf);
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strbuf_splice(&buf, 0, 0, "refs/heads/", 11);
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} else {
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strbuf_addstr(&buf, "refs/heads/");
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strbuf_addstr(&buf, branch->name);
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}
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branch->path = strbuf_detach(&buf, NULL);
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}
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