From 48e73760025ebbe9c4c8cde8f527b65e82e767b1 Mon Sep 17 00:00:00 2001
From: "Paul Gauthier (aider)" <aider@paulg.org>
Date: Thu, 21 Nov 2024 18:31:57 -0800
Subject: [PATCH] feat: Add placeholder functionality to input prompts

---
 aider/io.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/aider/io.py b/aider/io.py
index 9b609f8f6..e9feb7da9 100644
--- a/aider/io.py
+++ b/aider/io.py
@@ -198,6 +198,7 @@ class InputOutput:
         editingmode=EditingMode.EMACS,
         fancy_input=True,
     ):
+        self.placeholder = None
         self.never_prompts = set()
         self.editingmode = editingmode
         no_color = os.environ.get("NO_COLOR")
@@ -427,8 +428,13 @@ class InputOutput:
 
             try:
                 if self.prompt_session:
+                    # Use placeholder if set, then clear it
+                    default = self.placeholder
+                    self.placeholder = None
+                    
                     line = self.prompt_session.prompt(
                         show,
+                        default=default,
                         completer=completer_instance,
                         reserve_space_for_menu=4,
                         complete_style=CompleteStyle.MULTI_COLUMN,
@@ -739,6 +745,10 @@ class InputOutput:
 
         self.console.print(show_resp)
 
+    def set_placeholder(self, placeholder):
+        """Set a one-time placeholder text for the next input prompt."""
+        self.placeholder = placeholder
+
     def print(self, message=""):
         print(message)