Re: [PATCH v3 0/2] bringing attributes to pathspecs

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Duy Nguyen <pclouds@xxxxxxxxx> writes:

> The series updated match_pathspec(), but that's only one of two
> pathspec filtering functions. The other is tree_entry_interesting()
> (e.g. for "git grep <tree>"). Do you have plans to support :(attr)
> there too? "No" is a perfectly fine answer (and it will end up in my
> forever growing backlog).
>
> The thing about tree_entry_interesting() is, we would want to stop
> traversing subtrees as soon as possible. Naively implemented, we would
> need to traverse all subtrees so we can call match_attrs(). That's not
> great. Oii I'm rambling.. I don't know yet how to implement this thing
> efficiently.

Thanks for great insights.  

It indeed will become issue when an overly broad pathspec pattern is
combined with an attribute requirement, e.g. ".:(attr=X)", and we
may have to devise a way to tell that there won't be any paths with
that satisfy the attribute requirement before descending into a tree
as an optimization.



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