gix-dir: Walk

gix-discover/Cargo.toml

@@ -17,6 +17,7 @@ gix-sec = { version = "^0.10.3", path = "../gix-sec" }
 gix-path = { version = "^0.10.3", path = "../gix-path" }
 gix-ref = { version = "^0.40.1", path = "../gix-ref" }
 gix-hash = { version = "^0.14.1", path = "../gix-hash" }
+gix-fs = { version = "^0.9.1", path = "../gix-fs" }
 
 bstr = { version = "1.3.0", default-features = false, features = ["std", "unicode"] }
 thiserror = "1.0.26"

gix-discover/src/is.rs

@@ -177,6 +177,7 @@ pub(crate) fn git_with_metadata(
             dot_git.as_ref().into(),
             gix_ref::store::WriteReflog::Normal,
             object_hash_should_not_matter_here,
+            false,
         );
         let head = refs.find_loose("HEAD")?;
         if head.name.as_bstr() != "HEAD" {

gix-discover/src/upwards/mod.rs

@@ -39,7 +39,15 @@ pub(crate) mod function {
         // us the parent directory. (`Path::parent` just strips off the last
         // path component, which means it will not do what you expect when
         // working with paths paths that contain '..'.)
-        let cwd = current_dir.map_or_else(|| std::env::current_dir().map(Cow::Owned), |cwd| Ok(Cow::Borrowed(cwd)))?;
+        let cwd = current_dir.map_or_else(
+            || {
+                // The paths we return are relevant to the repository, but at this time it's impossible to know
+                // what `core.precomposeUnicode` is going to be. Hence the one using these paths will have to
+                // transform the paths as needed, because we can't. `false` means to leave the obtained path as is.
+                gix_fs::current_dir(false).map(Cow::Owned)
+            },
+            |cwd| Ok(Cow::Borrowed(cwd)),
+        )?;
         #[cfg(windows)]
         let directory = dunce::simplified(directory);
         let dir = gix_path::normalize(directory.into(), cwd.as_ref()).ok_or_else(|| Error::InvalidInput {

gix-discover/src/upwards/types.rs

@@ -63,6 +63,10 @@ pub struct Options<'a> {
     /// that this is merely an optimization for those who discover a lot of repositories in the same process.
     ///
     /// If unset, the current working directory will be obtained automatically.
+    /// Note that the path here might or might not contained decomposed unicode, which may end up in a path
+    /// relevant us, like the git-dir or the worktree-dir. However, when opening the repository, it will
+    /// change decomposed unicode to precomposed unicode based on the value of `core.precomposeUnicode`, and we
+    /// don't have to deal with that value here just yet.
     pub current_dir: Option<&'a std::path::Path>,
 }
 

gix-features/Cargo.toml

@@ -25,7 +25,10 @@ progress-unit-human-numbers = ["prodash?/unit-human"]
 progress-unit-bytes = ["dep:bytesize", "prodash?/unit-bytes"]
 
 ## If set, walkdir iterators will be multi-threaded.
-fs-walkdir-parallel = [ "dep:jwalk" ]
+fs-walkdir-parallel = [ "dep:jwalk", "dep:gix-utils" ]
+
+## Provide utilities suitable for working with the `std::fs::read_dir()`.
+fs-read-dir = ["dep:gix-utils"]
 
 ## Implement `tracing` with `tracing-core`, which provides applications with valuable performance details if they opt-in to it.
 ##
@@ -47,7 +50,7 @@ parallel = ["dep:crossbeam-channel",
 once_cell = ["dep:once_cell"]
 ## Makes facilities of the `walkdir` crate partially available.
 ## In conjunction with the **parallel** feature, directory walking will be parallel instead behind a compatible interface.
-walkdir = ["dep:walkdir"]
+walkdir = ["dep:walkdir", "dep:gix-utils"]
 #* an in-memory unidirectional pipe using `bytes` as efficient transfer mechanism.
 io-pipe = ["dep:bytes"]
 ## provide a proven and fast `crc32` implementation.
@@ -117,6 +120,9 @@ required-features = ["io-pipe"]
 gix-hash = { version = "^0.14.1", path = "../gix-hash" }
 gix-trace = { version = "^0.1.7", path = "../gix-trace" }
 
+# for walkdir
+gix-utils = { version = "^0.1.8", path = "../gix-utils", optional = true }
+
 # 'parallel' feature
 crossbeam-channel = { version = "0.5.0", optional = true }
 parking_lot = { version = "0.12.0", default-features = false, optional = true }