Fix windows bug where llm doesn't run <<llm chat>> on Windows issue #495

 (#646)

* Fix windows bug where llm doesn't run <<llm chat>> on Windows issue #495

* Applied Black

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Co-authored-by: Sukhbinder Singh <sukhbindersingh@gmail.com>
Co-authored-by: Simon Willison <swillison@gmail.com>

llm/cli.py

@@ -499,8 +499,12 @@ def chat(
     Hold an ongoing chat with a model.
     """
     # Left and right arrow keys to move cursor:
-    readline.parse_and_bind("\\e[D: backward-char")
-    readline.parse_and_bind("\\e[C: forward-char")
+    if sys.platform != "win32":
+        readline.parse_and_bind("\\e[D: backward-char")
+        readline.parse_and_bind("\\e[C: forward-char")
+    else:
+        readline.parse_and_bind("bind -x '\\e[D: backward-char'")
+        readline.parse_and_bind("bind -x '\\e[C: forward-char'")
     log_path = logs_db_path()
     (log_path.parent).mkdir(parents=True, exist_ok=True)
     db = sqlite_utils.Database(log_path)