Hi Brandon,

On Mon, 4 Dec 2017, Brandon Williams wrote:

> Commit 74ed43711fd (grep: enable recurse-submodules to work on <tree>
> objects, 2016-12-16) taught 'tree_entry_interesting()' to be able to
> match across submodule boundaries in the presence of wildcards.  This is
> done by performing literal matching up to the first wildcard and then
> punting to the submodule itself to perform more accurate pattern
> matching.  Instead of introducing a new flag to request this behavior,
> commit 74ed43711fd overloaded the already existing 'recursive' flag in
> 'struct pathspec' to request this behavior.
> 
> This leads to a bug where whenever any other caller has the 'recursive'
> flag set as well as a pathspec with wildcards that all submodules will
> be indicated as matches.  One simple example of this is:
> 
>       git init repo
>       cd repo
> 
>       git init submodule
>       git -C submodule commit -m initial --allow-empty
> 
>       touch "[bracket]"
>       git add "[bracket]"
>       git commit -m bracket
>       git add submodule
>       git commit -m submodule
> 
>       git rev-list HEAD -- "[bracket]"
> 
> Fix this by introducing the new flag 'recurse_submodules' in 'struct
> pathspec' and using this flag to determine if matches should be allowed
> to cross submodule boundaries.
> 
> This fixes https://github.com/git-for-windows/git/issues/1371.

Thanks,
Dscho

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