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README.md

@@ -22,7 +22,7 @@ Here are some example transcripts that show how you can chat with `aider` to wri
 * [**Create a Black Box Test Case**](https://aider.chat/examples/add-test.html): GPT creates a "black box" test case without access to the source of the method being tested, using only a
 [high level map of the repository based on ctags](https://aider.chat/docs/ctags.html).
 
-* [**Download, analyze and plot US Census data**](https://aider.chat/examples/census.html): GPT-4 downloads census data, suggests some hypotheses to test, tests one and then summarizes and plots a graph of the results.
+* [**Honor the NO_COLOR env var**](https://aider.chat/examples/no-color.html): The user pastes the NO_COLOR spec from no-color.org, and GPT-4 modifies the application to conform.
 
 You can find more chat transcripts on the [examples page](https://aider.chat/examples/).
 

aider/prompts.py

@@ -8,7 +8,7 @@ Take requests for changes to the supplied code.
 If the request is ambiguous, ask questions.
 
 Once you understand the request you MUST:
-1. List the files you need to modify. If they are *read-only* ask the user to make them *read-write* using the file's full path name.
+1. List the files you need to modify. If they are *read-only* you *MUST* ask the user to make them *read-write* using the file's full path name.
 2. Think step-by-step and explain the needed changes.
 3. Describe each change with an *edit block* per the example below.
 """

examples/no-color.md

@@ -0,0 +1,105 @@
+
+# Honor the NO_COLOR environment variable
+
+The user pastes the specification of the NO_COLOR environment variable protocol
+from [no-color.org](https://no-color.org) into the chat with GPT-4.
+
+GPT figures out which files need to be edited, and asks permission to make changes.
+It then disables all the color and pretty-printing functions if NO_COLOR is
+set, so the tool conforms to the specification.
+
+## Chat transcript
+> $ aider  
+> Using git repo: .git  
+> Use /help to see in-chat commands.  
+
+#### Command-line software which adds ANSI color to its output by default should check for a NO_COLOR environment variable that, when present and not an empty string (regardless of its value), prevents the addition of ANSI color.  
+
+To implement this feature, we need to modify the `aider/io.py` file. Please make it *read-write* so I can provide the necessary changes.
+
+> aider/io.py  
+> Add these files to the chat? y  
+
+Great! Now, I will make the necessary changes to check for the `NO_COLOR` environment variable and disable ANSI color when it is present and not an empty string.
+
+```python
+aider/io.py
+<<<<<<< ORIGINAL
+import os
+=======
+import os
+import os.path
+>>>>>>> UPDATED
+```
+
+```python
+aider/io.py
+<<<<<<< ORIGINAL
+    def __init__(
+        self,
+        pretty=True,
+        yes=False,
+        input_history_file=None,
+        chat_history_file=None,
+        input=None,
+        output=None,
+        user_input_color="blue",
+        tool_output_color=None,
+        tool_error_color="red",
+    ):
+        self.user_input_color = user_input_color
+        self.tool_output_color = tool_output_color
+        self.tool_error_color = tool_error_color
+        self.input = input
+        self.output = output
+        self.pretty = pretty
+        self.yes = yes
+        self.input_history_file = input_history_file
+        if chat_history_file is not None:
+            self.chat_history_file = Path(chat_history_file)
+        else:
+            self.chat_history_file = None
+
+        if pretty:
+            self.console = Console()
+        else:
+            self.console = Console(force_terminal=True, no_color=True)
+=======
+    def __init__(
+        self,
+        pretty=True,
+        yes=False,
+        input_history_file=None,
+        chat_history_file=None,
+        input=None,
+        output=None,
+        user_input_color="blue",
+        tool_output_color=None,
+        tool_error_color="red",
+    ):
+        no_color = os.environ.get("NO_COLOR")
+        if no_color is not None and no_color != "":
+            pretty = False
+
+        self.user_input_color = user_input_color if pretty else None
+        self.tool_output_color = tool_output_color if pretty else None
+        self.tool_error_color = tool_error_color if pretty else None
+        self.input = input
+        self.output = output
+        self.pretty = pretty
+        self.yes = yes
+        self.input_history_file = input_history_file
+        if chat_history_file is not None:
+            self.chat_history_file = Path(chat_history_file)
+        else:
+            self.chat_history_file = None
+
+        self.console = Console(force_terminal=not pretty, no_color=not pretty)
+>>>>>>> UPDATED
+```
+
+These changes will make the software check for the `NO_COLOR` environment variable and disable ANSI color when it is present and not an empty string.
+
+> Applied edit to aider/io.py  
+> Applied edit to aider/io.py  
+> Commit 3218242 aider: Added check for NO_COLOR environment variable to disable ANSI color.