filter-repo: consistently use bytestrings for directory names

Signed-off-by: Elijah Newren <newren@gmail.com>

git-filter-repo

@@ -2745,7 +2745,7 @@ class RepoFilter(object):
       print("[DEBUG] Passed arguments:\n{}".format(self._args))
 
     # Determine basic repository information
-    target_working_dir = self._args.target or '.'
+    target_working_dir = self._args.target or b'.'
     self._orig_refs = GitUtils.get_refs(target_working_dir)
     is_bare = GitUtils.is_repository_bare(target_working_dir)
 
@@ -3525,7 +3525,7 @@ class RepoFilter(object):
       return
     if self._args.debug:
       print("[DEBUG] Migrating refs/remotes/origin/* -> refs/heads/*")
-    target_working_dir = self._args.target or '.'
+    target_working_dir = self._args.target or b'.'
     p = subprocess.Popen('git update-ref --no-deref --stdin'.split(),
                          stdin=subprocess.PIPE,
                          cwd=target_working_dir)
@@ -3635,7 +3635,7 @@ class RepoFilter(object):
         else: # Must be either an annotated tag, or a ref whose tip was pruned
           if not batch_check_process:
             cmd = 'git cat-file --batch-check'.split()
-            target_working_dir = self._args.target or '.'
+            target_working_dir = self._args.target or b'.'
             batch_check_process = subprocess.Popen(cmd,
                                                    stdin=subprocess.PIPE,
                                                    stdout=subprocess.PIPE,

t/t9391-filter-repo-lib-usage.sh

@@ -158,7 +158,7 @@ test_expect_success 'other error cases' '
 		mkdir other &&
 		cd other &&
 
-		! python3 -c "import git_filter_repo as fr; fr.GitUtils.get_commit_count(\".\", [\"HEAD\"])" 2>err &&
+		! python3 -c "import git_filter_repo as fr; fr.GitUtils.get_commit_count(b\".\", [\"HEAD\"])" 2>err &&
 		test_i18ngrep ". does not appear to be a valid git repository" err
 	)
 '

t/t9391/print_progress.py

@@ -11,8 +11,8 @@ import git_filter_repo as fr
 
 if len(sys.argv) != 3:
   raise SystemExit("Syntax:\n  %s SOURCE_REPO TARGET_REPO")
-source_repo = sys.argv[1]
-target_repo = sys.argv[2]
+source_repo = sys.argv[1].encode()
+target_repo = sys.argv[2].encode()
 
 total_objects = fr.GitUtils.get_total_objects(source_repo) # blobs+trees
 total_commits = fr.GitUtils.get_commit_count(source_repo)