adapt to changes in git-discover (#301)

Author: Byron

git-repository/src/lib.rs

@@ -219,6 +219,7 @@ impl From<git_discover::repository::Kind> for Kind {
     fn from(v: git_discover::repository::Kind) -> Self {
         match v {
             git_discover::repository::Kind::Bare => Kind::Bare,
+            git_discover::repository::Kind::WorkTreeGitDir { .. } => Kind::WorkTree { is_linked: true },
             git_discover::repository::Kind::WorkTree { linked_git_dir } => Kind::WorkTree {
                 is_linked: linked_git_dir.is_some(),
             },

git-repository/src/worktree/proxy.rs

@@ -34,16 +34,14 @@ impl<'repo> Proxy<'repo> {
     /// Note that the location might not exist.
     pub fn base(&self) -> std::io::Result<PathBuf> {
         let git_dir = self.git_dir.join("gitdir");
-        let mut base_dot_git = git_discover::path::from_plain_file(&git_dir).ok_or_else(|| {
+        let base_dot_git = git_discover::path::from_plain_file(&git_dir).ok_or_else(|| {
             std::io::Error::new(
                 std::io::ErrorKind::NotFound,
                 format!("Required file '{}' does not exist", git_dir.display()),
             )
         })??;
-        if base_dot_git.file_name().and_then(|n| n.to_str()) == Some(".git") {
-            base_dot_git.pop();
-        }
-        Ok(base_dot_git)
+
+        Ok(git_discover::path::without_dot_git_dir(base_dot_git))
     }
 
     /// The git directory for the work tree, typically contained within the parent git dir.