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diff --git a/vendor/gix-features/src/lib.rs b/vendor/gix-features/src/lib.rs
new file mode 100644
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+++ b/vendor/gix-features/src/lib.rs
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+//! A crate providing foundational capabilities to other `git-*` crates with trade-offs between compile time, binary size or speed
+//! selectable using cargo feature toggles.
+//!
+//! It's designed to allow the application level crate to configure feature toggles, affecting all other `git-*` crates using
+//! this one.
+//!
+//! Thus all features provided here commonly have a 'cheap' base implementation, with the option to pull in
+//! counterparts with higher performance.
+//! ## Feature Flags
+#![cfg_attr(
+    feature = "document-features",
+    cfg_attr(doc, doc = ::document_features::document_features!())
+)]
+#![cfg_attr(docsrs, feature(doc_cfg, doc_auto_cfg))]
+#![deny(missing_docs, rust_2018_idioms, unsafe_code)]
+
+///
+pub mod cache;
+///
+pub mod decode;
+pub mod fs;
+pub mod hash;
+pub mod interrupt;
+#[cfg(feature = "io-pipe")]
+pub mod io;
+pub mod parallel;
+#[cfg(feature = "progress")]
+pub mod progress;
+pub mod threading;
+///
+#[cfg(feature = "zlib")]
+pub mod zlib;
+
+///
+pub mod iter {
+    /// An iterator over chunks of input, producing `Vec<Item>` with a size of `size`, with the last chunk being the remainder and thus
+    /// potentially smaller than `size`.
+    pub struct Chunks<I> {
+        /// The inner iterator to ask for items.
+        pub inner: I,
+        /// The size of chunks to produce
+        pub size: usize,
+    }
+
+    impl<I, Item> Iterator for Chunks<I>
+    where
+        I: Iterator<Item = Item>,
+    {
+        type Item = Vec<Item>;
+
+        fn next(&mut self) -> Option<Self::Item> {
+            let mut res = Vec::with_capacity(self.size);
+            let mut items_left = self.size;
+            for item in &mut self.inner {
+                res.push(item);
+                items_left -= 1;
+                if items_left == 0 {
+                    break;
+                }
+            }
+            (!res.is_empty()).then_some(res)
+        }
+    }
+}