Re: [PATCH v2 5/6] merge: ensure we can actually restore pre-merge state
From: ZheNing Hu <hidden>
Date: 2022-07-17 16:41:44
Elijah Newren via GitGitGadget [off-list ref] 于2022年6月19日周日 14:50写道:
quoted hunk ↗ jump to hunk
From: Elijah Newren <redacted> Merge strategies can fail -- not just have conflicts, but give up and say that they are unable to handle the current type of merge. However, they can also make changes to the index and working tree before giving up; merge-octopus does this, for example. Currently, we do not expect the individual strategies to clean up after themselves, but instead expect builtin/merge.c to do so. For it to be able to, it needs to save the state before trying the merge strategy so it can have something to restore to. Therefore, remove the shortcut bypassing the save_state() call. Signed-off-by: Elijah Newren <redacted> --- builtin/merge.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)diff --git a/builtin/merge.c b/builtin/merge.c index 2dc56fab70b..aaee8f6a553 100644 --- a/builtin/merge.c +++ b/builtin/merge.c@@ -1663,12 +1663,10 @@ int cmd_merge(int argc, const char **argv, const char *prefix) * tree in the index -- this means that the index must be in * sync with the head commit. The strategies are responsible * to ensure this. + * + * Stash away the local changes so that we can try more than one. */ - if (use_strategies_nr == 1 || - /* - * Stash away the local changes so that we can try more than one. - */ - save_state(&stash)) + if (save_state(&stash)) oidclr(&stash); for (i = 0; !merge_was_ok && i < use_strategies_nr; i++) { --gitgitgadget
So now we will not make "stash" empty even if we are using only one merge strategy (e.g. octopus), so we can reset to the original state correctly. Good. ZheNing Hu