diff --git a/lookatme/__main__.py b/lookatme/__main__.py
index 58e5419..a42b1d7 100644
--- a/lookatme/__main__.py
+++ b/lookatme/__main__.py
@@ -7,6 +7,7 @@ This is the main CLI for lookatme
 
 import click
 import logging
+import io
 import os
 import pygments.styles
 import sys
@@ -56,8 +57,12 @@ from lookatme.schemas import StyleSchema
     is_flag=True,
     default=False,
 )
-@click.argument("input_file", type=click.File(), default=sys.stdin)
-def main(debug, log_path, theme, code_style, dump_styles, input_file, live_reload):
+@click.argument(
+    "input_files",
+    type=click.File("r"),
+    nargs=-1,
+)
+def main(debug, log_path, theme, code_style, dump_styles, input_files, live_reload):
     """lookatme - An interactive, terminal-based markdown presentation tool.
     """
     if debug:
@@ -65,7 +70,9 @@ def main(debug, log_path, theme, code_style, dump_styles, input_file, live_reloa
     else:
         lookatme.config.LOG = lookatme.log.create_null_log()
 
-    pres = Presentation(input_file, theme, code_style, live_reload=live_reload)
+    if len(input_files) == 0:
+        input_files = [io.StringIO("")]
+    pres = Presentation(input_files[0], theme, code_style, live_reload=live_reload)
 
     if dump_styles:
         print(StyleSchema().dumps(pres.styles))
diff --git a/lookatme/schemas.py b/lookatme/schemas.py
index c492f03..91938cf 100644
--- a/lookatme/schemas.py
+++ b/lookatme/schemas.py
@@ -33,7 +33,7 @@ NoDatesSafeLoader.remove_implicit_resolver('tag:yaml.org,2002:timestamp')
 
 class YamlRender:
     loads = lambda data: yaml.load(data, Loader=NoDatesSafeLoader)
-    dumps = lambda data: yaml.safe_dump(data)
+    dumps = lambda data: yaml.safe_dump(data, allow_unicode=True)
 
 
 class BulletsSchema(Schema):

--dump-styles should print yaml with Unicode characters
Currently any Unicode characters are escaped as `"\uXXXX"` strings when the resolved styles are dumped. This makes it really hard to debug and know what characters they actually are.
diff --git a/tests/test_cli.py b/tests/test_cli.py
new file mode 100644
index 0000000..e480bd0
--- /dev/null
+++ b/tests/test_cli.py
@@ -0,0 +1,24 @@
+"""
+Test the main CLI
+"""
+
+
+from click.testing import CliRunner
+
+
+from lookatme.__main__ import main
+
+
+def run_cmd(*args):
+    """Run the provided arguments
+    """
+    runner = CliRunner()
+    return runner.invoke(main, args)
+
+
+def test_dump_styles_unicode():
+    """Test that dump styles works correctly
+    """
+    res = run_cmd("--dump-styles")
+    assert res.exit_code == 0
+    assert "█" in res.output

pip install -e .[dev]
parse_log_pytest
requirements.txt
pytest pytest-xdist pytest-mock pytest-cov
apt-get update apt-get install -y gcc
3.7
requirements.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
certifi @ file:///croot/certifi_1671487769961/work/certifi
click==7.1.2
coverage==7.2.7
exceptiongroup==1.2.2
execnet==2.0.2
importlib-metadata==6.7.0
iniconfig==2.0.0
-e git+https://github.com/d0c-s4vage/lookatme.git@a1634d80ea5e5abcc84b9d6cdbb1209b4db1b717#egg=lookatme
marshmallow==3.19.0
mistune==0.8.4
packaging==24.0
pluggy==1.2.0
Pygments==2.17.2
pytest==7.4.4
pytest-cov==4.1.0
pytest-mock==3.11.1
pytest-xdist==3.5.0
PyYAML==5.4.1
tomli==2.0.1
typing_extensions==4.7.1
urwid==2.6.16
wcwidth==0.2.13
zipp==3.15.0

name: lookatme
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - certifi=2022.12.7=py37h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.4.4=h6a678d5_1
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=1.1.1w=h7f8727e_0
  - pip=22.3.1=py37h06a4308_0
  - python=3.7.16=h7a1cb2a_0
  - readline=8.2=h5eee18b_0
  - setuptools=65.6.3=py37h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - wheel=0.38.4=py37h06a4308_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - click==7.1.2
      - coverage==7.2.7
      - exceptiongroup==1.2.2
      - execnet==2.0.2
      - importlib-metadata==6.7.0
      - iniconfig==2.0.0
      - marshmallow==3.19.0
      - mistune==0.8.4
      - packaging==24.0
      - pluggy==1.2.0
      - pygments==2.17.2
      - pytest==7.4.4
      - pytest-cov==4.1.0
      - pytest-mock==3.11.1
      - pytest-xdist==3.5.0
      - pyyaml==5.4.1
      - tomli==2.0.1
      - typing-extensions==4.7.1
      - urwid==2.6.16
      - wcwidth==0.2.13
      - zipp==3.15.0
prefix: /opt/conda/envs/lookatme

tests/test_cli.py::test_dump_styles_unicode
lookatme/schemas.py lookatme/__main__.py
lookatme/schemas.py lookatme/__main__.py