How do I fix: 🛑 Root Causes of the Error?

The primary reason for this error is that Emacs does not provide a way to test if a window with a specific name exists without throwing an error. The `get-buffer-window-list` function returns nil if no buffer with the specified name exists, but it does not throw an error.Another possible cause is th

How do I fix: Using `get-buffer` and `car`?

Step 1: Use the `get-buffer` function to retrieve a list of all buffers.Step 2: Use the `car` function to get the first element of the list, which represents the first buffer in the list.

Software⏱️ 3 min read📅 2026-06-19

How to Fix: get-buffer-window-list throws error in Emacs 24 if name not found

Q: Step-by-Step Verified Fixes Using `buffer-live-p` and `buffer-name`?

Step 1: Use the `buffer-live-p` function to check if a buffer exists.Step 2: Use the `buffer-name` function to get the display name of the buffer. This can be used to compare with the expected buffer name.

Error in Emacs 24 when searching for open windows with specific names.

Quick Answer: Use the `get-buffer-window-list` function with a default value, such as `nil`, to handle cases where the window name is not found.

📋 Table of Contents

🛑 Root Causes of the Error
🛠️ Step-by-Step Verified Fixes
✨ Wrapping Up

The error 'get-buffer-window-list' throws an error in Emacs 24 if the name is not found. This issue affects users who are trying to access open windows with specific names.

This can be frustrating for users as it prevents them from accessing their desired buffer. However, there are alternative methods that can be used to achieve the same result.

🛑 Root Causes of the Error

The primary reason for this error is that Emacs does not provide a way to test if a window with a specific name exists without throwing an error. The `get-buffer-window-list` function returns nil if no buffer with the specified name exists, but it does not throw an error.
Another possible cause is that the buffer names are not being recognized correctly. This could be due to issues with the buffer's display name or its internal name.

🛠️ Step-by-Step Verified Fixes

Using `buffer-live-p` and `buffer-name`

Step 1: Use the `buffer-live-p` function to check if a buffer exists.
Step 2: Use the `buffer-name` function to get the display name of the buffer. This can be used to compare with the expected buffer name.

Using `get-buffer` and `car`

Step 1: Use the `get-buffer` function to retrieve a list of all buffers.
Step 2: Use the `car` function to get the first element of the list, which represents the first buffer in the list.

✨ Wrapping Up

To resolve this issue, you can use one of the alternative methods outlined above. By using `buffer-live-p` and `buffer-name`, or by using `get-buffer` and `car`, you can test for the existence of an open window matching a name without triggering an error if the name is not found.

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