[BUG] git ls-files -m --with-tree does double output

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Junio, I am resending this one because I am not sure whether you ignored
it on purpose, or it got lost during your vacation.

The combination of -m and --with-tree shows duplicate entries:

and@dylle:~$ mkdir repo ; cd repo
and@dylle:~/repo$ git init
Initialized empty Git repository in /home/and/repo/.git/
and@dylle:~/repo$ date >a ; git add a ; git commit -m'Add 1'
Created initial commit c027435: Add 1
 1 files changed, 1 insertions(+), 0 deletions(-)
 create mode 100644 a
and@dylle:~/repo$ date >a
and@dylle:~/repo$ git ls-files -m --with-tree=HEAD
a
a


Jeff King added:

I have confirmed this, and it looks like it has always been that way. It
looks like overlay_tree_on_cache just does a read_tree to pull the tree
into the index, and then we end up with duplicate entries.

I'm not too familiar with the read_tree code, so I am cc'ing Junio (who
is out of touch for a little while) and Linus, who are much more clueful
in this area.

It isn't clear to me which code is _supposed_ to be pulling out such
duplicates here. That is, is read_tree broken, or is
overlay_tree_on_cache just calling it wrong?



Anders.


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