Check excludes before symlink resolution for command line parameters

This adjusts exclusion checking for command line parameters the same way
as psf#3846 did for other files. Specifically, --force-exclude is now
checked before symlink resolution. This way symlink handling is
consistent between command line parameters and other collected files.

Fixes psf#3826.

src/black/__init__.py

@@ -50,6 +50,7 @@
     get_gitignore,
     normalize_path_maybe_ignore,
     parse_pyproject_toml,
+    path_is_excluded,
     wrap_stream_for_windows,
 )
 from black.handle_ipynb_magics import (
@@ -639,25 +640,26 @@ def get_sources(
             is_stdin = False
 
         if is_stdin or p.is_file():
+            root_relative_path = p.absolute().relative_to(root).as_posix()
+
+            root_relative_path = "/" + root_relative_path
+            if p.is_dir():
+                root_relative_path += "/"
+
+            # Hard-exclude any files that matches the `--force-exclude` regex.
+            if path_is_excluded(root_relative_path, force_exclude):
+                report.path_ignored(p, "matches the --force-exclude regular expression")
+                continue
+
             normalized_path: Optional[str] = normalize_path_maybe_ignore(
                 p, root, report
             )
             if normalized_path is None:
                 if verbose:
-                    out(f'Skipping invalid source: "{normalized_path}"', fg="red")
+                    out(f'Skipping invalid source: "{p}"', fg="red")
                 continue
             if verbose:
-                out(f'Found input source: "{normalized_path}"', fg="blue")
-
-            normalized_path = "/" + normalized_path
-            # Hard-exclude any files that matches the `--force-exclude` regex.
-            if force_exclude:
-                force_exclude_match = force_exclude.search(normalized_path)
-            else:
-                force_exclude_match = None
-            if force_exclude_match and force_exclude_match.group(0):
-                report.path_ignored(p, "matches the --force-exclude regular expression")
-                continue
+                out(f'Found input source: "{p}"', fg="blue")
 
             if is_stdin:
                 p = Path(f"{STDIN_PLACEHOLDER}{str(p)}")