fix: --fix mode now fixes all files, not just the first

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## Unreleased
+
+### Fixed
+
+- `--fix` mode now fixes all files, not just the first (`any()` short-circuited
+  after the first fixable file, skipping the rest)
+
 ## 0.3.2 - 2026-02-21
 
 ### Added

src/check_unicode/main.py

@@ -472,7 +472,8 @@ def main(argv: list[str] | None = None) -> int:
 
     # Fix mode
     if args.fix:
-        any_fixed = any(fix_file(filepath) for filepath in files)
+        fixed = [fix_file(filepath) for filepath in files]
+        any_fixed = any(fixed)
         all_findings = _scan_files(files, allow, do_confusables=do_confusables)
         if all_findings:
             print_findings(all_findings, no_color=args.no_color, quiet=args.quiet)

tests/test_cli.py

@@ -60,6 +60,16 @@ def test_fix_clean_file_exits_0(self, tmp_path: Path) -> None:
         f.write_text("hello world\n", encoding="utf-8")
         assert main(["--fix", str(f)]) == 0
 
+    def test_fix_multiple_files_all_fixed(self, tmp_path: Path) -> None:
+        """Fix mode fixes all files, not just the first one."""
+        f1 = tmp_path / "a.txt"
+        f2 = tmp_path / "b.txt"
+        f1.write_text("He said \u201chello\u201d\n", encoding="utf-8")
+        f2.write_text("word\u2014word\n", encoding="utf-8")
+        assert main(["--fix", str(f1), str(f2)]) == 1
+        assert f1.read_text(encoding="utf-8") == 'He said "hello"\n'
+        assert f2.read_text(encoding="utf-8") == "word--word\n"
+
     def test_fix_dangerous_still_reported(self, tmp_path: Path) -> None:
         """Fix mode does not remove dangerous characters."""
         f = tmp_path / "bidi.txt"