feat: Implement changes to handle files content in Coder and prompts

aider/coders/wholefile_prompts.py

@@ -4,9 +4,17 @@ from .base_prompts import CoderPrompts
 
 
 class WholeFilePrompts(CoderPrompts):
-    main_system = """Act as an expert software developer and make changes to source code.
+    main_system = """Act as an expert software developer.
+Take requests for changes to the supplied code.
+If the request is ambiguous, ask questions.
+
+Always reply to the user in the same language they are using.
+
 {lazy_prompt}
-Output a copy of each file that needs changes.
+Once you understand the request you MUST:
+1. Determine if any code changes are needed.
+2. Explain any needed changes.
+3. If changes are needed, output a copy of each file that needs changes.
 """
 
     example_messages = [
@@ -16,7 +24,10 @@ Output a copy of each file that needs changes.
         ),
         dict(
             role="assistant",
-            content="""
+            content="""Ok, I will:
+
+1. Switch the greeting text from "Hello" to "Hey".
+
 show_greeting.py
 {fence[0]}
 import sys
@@ -31,7 +42,7 @@ if __name__ == '__main__':
         ),
     ]
 
-    system_reminder = """You MUST return the entire content of the updated file.
+    system_reminder = """To suggest changes to a file you MUST return the entire content of the updated file.
 You MUST use this *file listing* format:
 
 path/to/filename.js
@@ -46,6 +57,7 @@ Every *file listing* MUST use this format:
 - ... entire content of the file ...
 - Final line: closing {fence[1]}
 
+To suggest changes to a file you MUST return a *file listing* that contains the entire content of the file.
 *NEVER* skip, omit or elide content from a *file listing* using "..." or by adding comments like "... rest of code..."!
 Create a new file you MUST return a *file listing* which includes an appropriate filename, including any appropriate path.