diff --git a/README.md b/README.md
index 0974021..a957117 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ For technical details and a complete evaluation, see our arXiv paper, [_ChatDBG:
 
 > **Note**
 >
-> ChatDBG needs to be connected to an [OpenAI account](https://openai.com/api/). _Your account will need to have a positive balance for this to work_ ([check your balance](https://platform.openai.com/account/usage)). If you have never purchased credits, you will need to purchase at least $1 in credits (if your API account was created before August 13, 2023) or $0.50 (if you have a newer API account) in order to have access to GPT-4, which ChatDBG uses. [Get a key here.](https://platform.openai.com/account/api-keys)
+> ChatDBG needs to be connected to an [OpenAI account](https://openai.com/api/). _Your account will need to have a positive balance for this to work_ ([check your balance](https://platform.openai.com/account/usage)). If you have never purchased credits, you will need to purchase at least \$1 in credits (if your API account was created before August 13, 2023) or \$0.50 (if you have a newer API account) in order to have access to GPT-4, which ChatDBG uses. [Get a key here.](https://platform.openai.com/account/api-keys)
 >
 > Once you have an API key, set it as an environment variable called `OPENAI_API_KEY`.
 >
diff --git a/pyproject.toml b/pyproject.toml
index 23f0b1f..c1bd4ed 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,6 +35,7 @@ classifiers = [
 
 [project.scripts]
 chatdbg = "chatdbg.__main__:main"
+print_chatdbg_log = "chatdbg.util.plog:main"
 
 [project.urls]
 "Homepage" = "https://github.com/plasma-umass/ChatDBG"
diff --git a/src/chatdbg/chatdbg_pdb.py b/src/chatdbg/chatdbg_pdb.py
index 47d6a0a..1ee0956 100644
--- a/src/chatdbg/chatdbg_pdb.py
+++ b/src/chatdbg/chatdbg_pdb.py
@@ -47,22 +47,23 @@ def load_ipython_extension(ipython):
             from IPython.terminal.debugger import TerminalPdb
 
             ChatDBGSuper = TerminalPdb
-            _user_file_prefixes = [os.getcwd(), "<ipython"]
+            # _user_file_prefixes = [ "<ipython" ]
         else:
             # inside jupyter
             from IPython.core.debugger import InterruptiblePdb
 
             ChatDBGSuper = InterruptiblePdb
-            _user_file_prefixes = [os.getcwd(), IPython.paths.tempfile.gettempdir()]
+            # _user_file_prefixes = [ IPython.paths.tempfile.gettempdir() ]
     else:
         # ichatpdb on command line
         from IPython.terminal.debugger import TerminalPdb
 
         ChatDBGSuper = TerminalPdb
-        _user_file_prefixes = [os.getcwd()]
+        # _user_file_prefixes = [ ]
 except NameError as e:
     print(f"Error {e}:IPython not found. Defaulting to pdb plugin.")
     ChatDBGSuper = pdb.Pdb
+    # _user_file_prefixes = [ ]
 
 
 class ChatDBG(ChatDBGSuper):
@@ -88,6 +89,12 @@ def __init__(self, *args, **kwargs):
         # set this to True ONLY AFTER we have had access to stack frames
         self._show_locals = False
 
+        self._library_paths = [os.path.dirname(os.__file__)] + [
+            path
+            for path in sys.path
+            if "site-packages" in path or "dist-packages" in path
+        ]
+
         self._log = ChatDBGLog(
             log_filename=chatdbg_config.log,
             config=chatdbg_config.to_json(),
@@ -127,11 +134,11 @@ def _is_user_file(self, file_name):
         elif file_name == "<string>":
             return False
 
-        for prefix in _user_file_prefixes:
-            if file_name.startswith(prefix):
-                return True
+        for path in self._library_paths:
+            if os.path.commonpath([file_name, path]) == path:
+                return False
 
-        return False
+        return True
 
     def enriched_stack_trace(self, context=None):
         old_stdout = self.stdout
diff --git a/src/chatdbg/util/printer.py b/src/chatdbg/util/printer.py
index fdcee6c..051f9f2 100644
--- a/src/chatdbg/util/printer.py
+++ b/src/chatdbg/util/printer.py
@@ -10,7 +10,11 @@ def __init__(self, out, debugger_prompt, chat_prefix, width, stream=False):
         self._out = out
         self._debugger_prompt = debugger_prompt
         self._chat_prefix = chat_prefix
-        self._width = min(width, os.get_terminal_size().columns - len(chat_prefix))
+        try:
+            self._width = min(width, os.get_terminal_size().columns - len(chat_prefix))
+        except:
+            # get_terminal_size() may file in notebooks
+            self._width = width
         self._stream = stream
 
     # Call backs