add git ls-tree --long parser
Not yet used, but allows getting the size of items in the tree fairly cheaply. I noticed that CmdLine.Seek uses ls-tree and the feeds the files into another long-running process to check their size. That would be an example of a place that might be sped up by using this. Although in that particular case, it only needs to know the size of unlocked files, not locked. And since enabling --long probably doubles the ls-tree runtime or more, the overhead of using it there may outwweigh the benefit.
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@ -204,5 +204,5 @@ getExportExcluded u = do
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exportExcludedParser :: L.ByteString -> [Git.Tree.TreeItem]
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exportExcludedParser = map Git.Tree.lsTreeItemToTreeItem
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. rights
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. map Git.LsTree.parseLsTree
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. map (Git.LsTree.parseLsTree (Git.LsTree.LsTreeLong False))
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. L.split (fromIntegral $ ord '\n')
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