improvements

gix/Cargo.toml

@@ -208,7 +208,7 @@ max-control = ["parallel", "pack-cache-lru-static", "pack-cache-lru-dynamic"]
 ## on some platforms.
 ## Note that this configuration still uses a pure Rust zlib implementation which isn't the fastest compared to its C-alternatives.
 ## No C toolchain is involved.
-max-performance-safe = ["max-control", "parallel-walkdir"]
+max-performance-safe = ["max-control"]
 
 ## If set, walkdir iterators will be multi-threaded which affects the listing of loose objects and references.
 ## Note, however, that this will use `rayon` under the hood and spawn threads for each traversal to avoid a global rayon thread pool.

gix/src/reference/mod.rs

@@ -74,6 +74,20 @@ impl<'repo> Reference<'repo> {
         Ok(Id::from_id(oid, self.repo))
     }
 
+    /// Follow all symbolic targets this reference might point to and peel the underlying object
+    /// to the end of the chain, and return it, reusing the `packed` buffer if available.
+    ///
+    /// This is useful to learn where this reference is ultimately pointing to.
+    pub fn peel_to_id_in_place_packed(
+        &mut self,
+        packed: Option<&gix_ref::packed::Buffer>,
+    ) -> Result<Id<'repo>, peel::Error> {
+        let oid = self
+            .inner
+            .peel_to_id_in_place_packed(&self.repo.refs, &self.repo.objects, packed)?;
+        Ok(Id::from_id(oid, self.repo))
+    }
+
     /// Similar to [`peel_to_id_in_place()`][Reference::peel_to_id_in_place()], but consumes this instance.
     pub fn into_fully_peeled_id(mut self) -> Result<Id<'repo>, peel::Error> {
         self.peel_to_id_in_place()

gix/src/reference/remote.rs

@@ -1,6 +1,7 @@
+use crate::bstr::ByteSlice;
 use crate::repository::{branch_remote_ref_name, branch_remote_tracking_ref_name};
 use crate::{remote, Reference};
-use gix_ref::FullNameRef;
+use gix_ref::{Category, FullNameRef};
 use std::borrow::Cow;
 
 /// Remotes
@@ -9,8 +10,31 @@ impl<'repo> Reference<'repo> {
     /// Return `None` if no remote is configured.
     ///
     /// See also [`Repository::branch_remote_name()`](crate::Repository::branch_remote_name()) for more details.
-    pub fn remote_name(&self, direction: remote::Direction) -> Option<remote::Name<'repo>> {
-        self.repo.branch_remote_name(self.name().shorten(), direction)
+    pub fn remote_name(&self, direction: remote::Direction) -> Option<remote::Name<'_>> {
+        let (category, shortname) = self.name().category_and_short_name()?;
+        match category {
+            Category::RemoteBranch => {
+                if shortname.find_iter("/").take(2).count() == 1 {
+                    let slash_pos = shortname.find_byte(b'/').expect("it was just found");
+                    shortname[..slash_pos]
+                        .as_bstr()
+                        .to_str()
+                        .ok()
+                        .map(|n| remote::Name::Symbol(n.into()))
+                } else {
+                    let remotes = self.repo.remote_names();
+                    for slash_pos in shortname.rfind_iter("/") {
+                        let candidate = shortname[..slash_pos].as_bstr();
+                        if remotes.contains(candidate) {
+                            return candidate.to_str().ok().map(|n| remote::Name::Symbol(n.into()));
+                        }
+                    }
+                    None
+                }
+            }
+            Category::LocalBranch => self.repo.branch_remote_name(shortname, direction),
+            _ => None,
+        }
     }
 
     /// Find the remote along with all configuration associated with it suitable for handling this reference.

gix/src/remote/mod.rs

@@ -1,6 +1,6 @@
-use std::borrow::Cow;
-
 use crate::bstr::BStr;
+use std::borrow::Cow;
+use std::collections::BTreeSet;
 
 /// The direction of an operation carried out (or to be carried out) through a remote.
 #[derive(Debug, Eq, PartialEq, Copy, Clone, Hash)]
@@ -31,6 +31,9 @@ pub enum Name<'repo> {
     Url(Cow<'repo, BStr>),
 }
 
+/// A type-definition for a sorted list of unvalidated remote names - they have been read straight from the configuration.
+pub type Names<'a> = BTreeSet<Cow<'a, BStr>>;
+
 ///
 #[allow(clippy::empty_docs)]
 pub mod name;

gix/src/repository/config/remote.rs

@@ -1,5 +1,5 @@
 use crate::bstr::BStr;
-use std::{borrow::Cow, collections::BTreeSet};
+use std::borrow::Cow;
 
 use crate::config::tree::{Remote, Section};
 use crate::remote;
@@ -8,7 +8,7 @@ use crate::remote;
 impl crate::Repository {
     /// Returns a sorted list unique of symbolic names of remotes that
     /// we deem [trustworthy][crate::open::Options::filter_config_section()].
-    pub fn remote_names(&self) -> BTreeSet<Cow<'_, BStr>> {
+    pub fn remote_names(&self) -> remote::Names<'_> {
         self.config
             .resolved
             .sections_by_name(Remote.name())

gix/tests/fixtures/make_remote_config_repos.sh

@@ -131,3 +131,13 @@ EOF
     pushDefault = push-origin
 EOF
 )
+
+git clone fetch multiple-remotes
+(cd multiple-remotes
+  git remote add other ../fetch && git fetch other
+  git remote add with/two/slashes ../fetch && git fetch with/two/slashes
+  git remote add with/two ../fetch && git fetch with/two
+
+  git checkout -b main --track origin/main
+  git checkout -b other-main --track other/main
+)

gix/tests/reference/mod.rs

@@ -1,3 +1,5 @@
+use gix::remote::Direction;
+
 mod log {
 
     #[test]
@@ -17,6 +19,31 @@ mod log {
         );
     }
 }
+
+#[test]
+fn remote_name() -> crate::Result {
+    let repo = crate::named_subrepo_opts(
+        "make_remote_config_repos.sh",
+        "multiple-remotes",
+        gix::open::Options::isolated(),
+    )?;
+    for (ref_name, expected_remote) in [
+        ("main", "origin"),
+        ("other-main", "other"),
+        ("refs/remotes/origin/main", "origin"),
+        ("refs/remotes/other/main", "other"),
+        ("with/two/slashes/main", "with/two/slashes"),
+        ("with/two/main", "with/two"),
+    ] {
+        let r = repo.find_reference(ref_name)?;
+        assert_eq!(
+            r.remote_name(Direction::Fetch).map(|name| name.as_bstr().to_owned()),
+            Some(expected_remote.into())
+        );
+    }
+    Ok(())
+}
+
 mod find {
     use gix_ref as refs;
     use gix_ref::{FullName, FullNameRef, Target};