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graph: output padding for merge subsequent parents

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When showing merges in git-log, the same commit is shown once for each
parent.  Combined with "--graph" this results in graph_show_commit()
being called once for each parent without graph_update() being called.

Currently graph_show_commit() does not print anything on subsequent
invocations for the same commit (this was changed by commit 656197a -
"graph.c: infinite loop in git whatchanged --graph -m" from the previous
behaviour of looping infinitely).

Change this so that if the graph code believes it has already shown the
commit it prints a single padding line.

Signed-off-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
John Keeping 2013-02-07 20:15:23 +00:00 committed by Junio C Hamano
parent 42f50f8d01
commit a48ec24158
1 changed files with 10 additions and 0 deletions
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10
graph.c
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@ -1227,6 +1227,16 @@ void graph_show_commit(struct git_graph *graph)
if (!graph)
return;
/*
* When showing a diff of a merge against each of its parents, we
* are called once for each parent without graph_update having been
* called. In this case, simply output a single padding line.
*/
if (graph_is_commit_finished(graph)) {
graph_show_padding(graph);
shown_commit_line = 1;
}
while (!shown_commit_line && !graph_is_commit_finished(graph)) {
shown_commit_line = graph_next_line(graph, &msgbuf);
fwrite(msgbuf.buf, sizeof(char), msgbuf.len, stdout);