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I find myself accidentally clicking the mode line when trying to focus a buffer with the mouse. This causes the buffer to change. I don't want that behavior. I want nothing to happen.

The culprit is this guy here, the part of the mode line that says the buffer's name (e.g. *shell*):

enter image description here

How can I disable it's behavior when it clicked?

I am told it is <down-mouse-1> by C-h k. However, this corresponds to mouse-drag-mode-line which resizes. This is not the behavior I observe. I cannot locate the appropriate key to override.

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  • Good question. The mode-line is always difficult to ask Emacs about. Here, C-h k is not so useful. – Drew Jun 3 '20 at 16:26
  • It may have gotten better: when doing C-h k and clicking on the buffer name in the mode-line, I get a *Help* screen with two key sequences described: one is the mouse-drag-mode-line from global-map as above; the other is mode-line-previous-buffer which also identifies the mode-line-buffer-identification-keymap as described in @lawlist's answer. I'm on GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.13, cairo version 1.16.0). – NickD Jun 3 '20 at 16:47
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Try using:

(define-key mode-line-buffer-identification-keymap [mode-line mouse-1] nil)

(define-key mode-line-buffer-identification-keymap [mode-line mouse-3] nil)

The variable mode-line-buffer-identification-keymap is defined within bindings.el.

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