On Sat, Apr 27, 2013 at 01:35:57PM +0200, René Scharfe wrote:
> Am 07.04.2013 23:07, schrieb John Keeping:
> > The documentation says:
> >
> > the output from the command omits entries that match the
> > <branch1> tree.
> >
> > But currently "added in branch1" and "removed in branch1" (both while
> > unchanged in branch2) do print output. Change this so that the
> > behaviour matches the documentation.
> >
> > Signed-off-by: John Keeping <john@xxxxxxxxxxxxx>
> > ---
> > builtin/merge-tree.c | 26 +++++++++++++-------------
> > t/t4300-merge-tree.sh | 10 ----------
> > 2 files changed, 13 insertions(+), 23 deletions(-)
> >
> > diff --git a/builtin/merge-tree.c b/builtin/merge-tree.c
> > index bc912e3..ed25d81 100644
> > --- a/builtin/merge-tree.c
> > +++ b/builtin/merge-tree.c
> > @@ -155,6 +155,11 @@ static int same_entry(struct name_entry *a, struct name_entry *b)
> > a->mode == b->mode;
> > }
> >
> > +static int both_empty(struct name_entry *a, struct name_entry *b)
> > +{
> > + return !(a->sha1 || b->sha1);
> > +}
> > +
> > static struct merge_list *create_entry(unsigned stage, unsigned mode, const unsigned char *sha1, const char *path)
> > {
> > struct merge_list *res = xcalloc(1, sizeof(*res));
> > @@ -297,13 +302,10 @@ static void unresolved(const struct traverse_info *info, struct name_entry n[3])
> > static int threeway_callback(int n, unsigned long mask, unsigned long dirmask, struct name_entry *entry, struct traverse_info *info)
> > {
> > /* Same in both? */
> > - if (same_entry(entry+1, entry+2)) {
> > - if (entry[0].sha1) {
> > - /* Modified identically */
> > - resolve(info, NULL, entry+1);
> > - return mask;
> > - }
> > - /* "Both added the same" is left unresolved */
> > + if (same_entry(entry+1, entry+2) || both_empty(entry+0, entry+2)) {
>
> Shouldn't this zero be a one instead?
Yes, that's a typo.
> > + /* Modified, added or removed identically */
> > + resolve(info, NULL, entry+1);
> > + return mask;
> > }
> >
> > if (same_entry(entry+0, entry+1)) {
> > @@ -319,12 +321,10 @@ static int threeway_callback(int n, unsigned long mask, unsigned long dirmask, s
> > */
> > }
> >
> > - if (same_entry(entry+0, entry+2)) {
> > - if (entry[1].sha1 && !S_ISDIR(entry[1].mode)) {
> > - /* We modified, they did not touch -- take ours */
> > - resolve(info, NULL, entry+1);
> > - return mask;
> > - }
> > + if (same_entry(entry+0, entry+2) || both_empty(entry+0, entry+2)) {
>
> Otherwise the both_empty check here can be removed because we'd have
> already returned above if it was true.
>
> But do we actually want to resolve the removal of a file on both sides
> silently? The added comment above says so, but the commit message
> doesn't mention it.
I think so. The rule is that we omit things that match the branch1
tree. So if it is removed in branch1 and there isn't a conflict with
branch2 then we shouldn't be printing any output.
> > + /* We added, modified or removed, they did not touch -- take ours */
> > + resolve(info, NULL, entry+1);
> > + return mask;
> > }
> >
> > unresolved(info, entry);
> > diff --git a/t/t4300-merge-tree.sh b/t/t4300-merge-tree.sh
> > index d0b2a45..bd43b3d 100755
> > --- a/t/t4300-merge-tree.sh
> > +++ b/t/t4300-merge-tree.sh
> > @@ -26,8 +26,6 @@ EXPECTED
> >
> > test_expect_success 'file add !A, B' '
> > cat >expected <<\EXPECTED &&
> > -added in local
> > - our 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
> > EXPECTED
> >
> > git reset --hard initial &&
> > @@ -38,9 +36,6 @@ EXPECTED
> >
> > test_expect_success 'file add A, B (same)' '
> > cat >expected <<\EXPECTED &&
> > -added in both
> > - our 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
> > - their 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
> > EXPECTED
> >
> > git reset --hard initial &&
> > @@ -181,9 +176,6 @@ AAA" &&
> >
> > test_expect_success 'file remove A, !B' '
> > cat >expected <<\EXPECTED &&
> > -removed in local
> > - base 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
> > - their 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
> > EXPECTED
> >
> > git reset --hard initial &&
> > @@ -283,8 +275,6 @@ test_expect_success 'turn tree to file' '
> > test_commit "make-file" "dir" "CCC" &&
> > git merge-tree add-tree add-another-tree make-file >actual &&
> > cat >expect <<-\EOF &&
> > - added in local
> > - our 100644 ba629238ca89489f2b350e196ca445e09d8bb834 dir/another
> > removed in remote
> > base 100644 43d5a8ed6ef6c00ff775008633f95787d088285d dir/path
> > our 100644 43d5a8ed6ef6c00ff775008633f95787d088285d dir/path
> >
>
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