fix M

src/ffx/cli.py

@@ -301,6 +301,35 @@ def resolveUnmuxOutputDirectory(context, outputDirectory, subtitlesOnly, label):
     return os.path.join(configuredSubtitlesBaseDirectory, resolvedLabel), True
 
 
+def confirmUnmuxOutputDirectoryCreation(outputDirectory):
+    message = (
+        "Create unmux output directory and missing parents: "
+        + str(outputDirectory)
+    )
+
+    if not sys.stdin.isatty():
+        return click.confirm(message, default=True)
+
+    click.echo(f"{message} [Y/n]: ", nl=False)
+    while True:
+        char = click.getchar()
+        if char in ('\r', '\n'):
+            click.echo()
+            return True
+
+        normalizedChar = char.lower()
+        if normalizedChar == 'y':
+            click.echo(char)
+            return True
+        if normalizedChar == 'n':
+            click.echo(char)
+            return False
+        if char in ('\x03', '\x04'):
+            raise click.Abort()
+
+        click.echo("\nPlease respond with 'y' or 'n': ", nl=False)
+
+
 def ensureUnmuxOutputDirectory(context, outputDirectory):
     resolvedOutputDirectory = os.path.expanduser(str(outputDirectory).strip())
     if not resolvedOutputDirectory:
@@ -318,11 +347,7 @@ def ensureUnmuxOutputDirectory(context, outputDirectory):
     if context.get('dry_run', False):
         return False
 
-    if not click.confirm(
-        "Create unmux output directory and missing parents: "
-        + resolvedOutputDirectory,
-        default=True,
-    ):
+    if not confirmUnmuxOutputDirectoryCreation(resolvedOutputDirectory):
         raise click.ClickException("Unmux output directory creation aborted by user.")
 
     os.makedirs(resolvedOutputDirectory, exist_ok=True)

tests/unit/test_cli_unmux_output_directory.py

@@ -104,6 +104,24 @@ class UnmuxOutputDirectoryTests(unittest.TestCase):
             self.assertTrue(output_directory.is_dir())
             mocked_confirm.assert_called_once()
 
+    def test_tty_carriage_return_accepts_default_directory_creation(self):
+        with tempfile.TemporaryDirectory() as tempdir:
+            output_directory = Path(tempdir) / "missing" / "manual"
+
+            with patch("ffx.cli.sys.stdin.isatty", return_value=True), patch(
+                "ffx.cli.click.getchar",
+                return_value="\r",
+            ) as mocked_getchar, patch("ffx.cli.click.confirm") as mocked_confirm:
+                created = cli.ensureUnmuxOutputDirectory(
+                    {"dry_run": False},
+                    str(output_directory),
+                )
+
+            self.assertTrue(created)
+            self.assertTrue(output_directory.is_dir())
+            mocked_getchar.assert_called_once()
+            mocked_confirm.assert_not_called()
+
     def test_missing_output_directory_can_be_rejected(self):
         with tempfile.TemporaryDirectory() as tempdir:
             output_directory = Path(tempdir) / "missing" / "manual"