fix: Update Ollama context window handling and input confirmation logic

aider/coders/base_coder.py

@@ -1246,7 +1246,7 @@ class Coder:
             self.io.tool_output("- Use /drop to remove unneeded files from the chat")
             self.io.tool_output("- Use /clear to clear the chat history")
             self.io.tool_output("- Break your code into smaller files")
-            proceed = "y"
+            proceed = "Y"
             self.io.tool_output(
                 "It's probably safe to try and send the request, most providers won't charge if"
                 " the context limit is exceeded."
@@ -1255,14 +1255,14 @@ class Coder:
         # Special warning for Ollama models about context window size
         if self.main_model.name.startswith(("ollama/", "ollama_chat/")):
             extra_params = getattr(self.main_model, "extra_params", None) or {}
-            num_ctx = extra_params.get("num_ctx", 8192)
-            if max_input_tokens and max_input_tokens > num_ctx:
-                self.io.tool_waning(
-                    f"Your Ollama model is configured with num_ctx={num_ctx} tokens of"
-                    " context window\nSee"
-                    " https://aider.chat/docs/llms/ollama.html#setting-the-context-window-size"
-                    " for help configuring larger context windows."
-                )
+            num_ctx = extra_params.get("num_ctx", 2048)
+            if input_tokens > num_ctx:
+                proceed = "N"
+                self.io.tool_warning(f"""
+Your Ollama model is configured with num_ctx={num_ctx} tokens of context window.
+You are attempting to send {input_tokens} tokens.
+See https://aider.chat/docs/llms/ollama.html#setting-the-context-window-size
+""".strip())  # noqa
 
         if proceed and not self.io.confirm_ask("Try to proceed anyway?", default=proceed):
             return False

aider/io.py

@@ -732,6 +732,7 @@ class InputOutput:
                         question,
                         style=style,
                         complete_while_typing=False,
+                        default=default,
                     )
                 else:
                     res = input(question)