How to show a border around the mode-line-buffer-id?

I tried to customize the mode-line-buffer-id face and add the `:box` property, then removing the `:box` property from the mode-line face, but it does not show a border on all sides: https://i.imgur.com/2NLcgvO.png What is making the border show like that? Thanks!

Show your code.

Here it is: (custom-set-variables ;; custom-set-variables was added by Custom. ;; If you edit it by hand, you could mess it up, so be careful. ;; Your init file should contain only one such instance. ;; If there is more than one, they won't work right. ) (custom-set-faces ;; custom-set-faces was added by Custom. ;; If you edit it by hand, you could mess it up, so be careful. ;; Your init file should contain only one such instance. ;; If there is more than one, they won't work right. '(mode-line ((t (:background "grey75" :foreground "black")))) '(mode-line-buffer-id ((t (:box (:line-width 2 :color "red") :weight bold)))) '(mode-line-inactive ((t (:inherit mode-line :background "grey90" :foreground "grey20" :weight light))))) Same result with emacs -Q.

You can have it boxed like this: (Recommend testing in the scratch buffer) (setq mode-line-format (propertize " %b " 'face '(:box (:line-width 2 :color "red") :weight bold))) [customizing the mode-line](https://emacs-fu.blogspot.com/2011/08/customizing-mode-line.html)

Library [Mode-Line Selected Window](https://www.emacswiki.org/emacs/ModeLineSelectedWindow) ([`modeline-win.el`](https://www.emacswiki.org/emacs/download/modeline-win.el)) does this for you. It uses face `mlw-mode-line-buffer-id-selected-window` for the `mode-line-buffer-identification`. The face is boxed by default: (defface mlw-mode-line-buffer-id-selected-window '((t (:box (:line-width 1 :color "green") :background "#EF47FFFFC847"))) "Face for `mode-line-buffer-identification' of selected window." :group 'mode-line-faces :group 'basic-faces) It's a very tiny library. You can turn this highlighting on/off with minor mode `mlw-mode-line-buf-id-sel-win-mode`. ---- And if you use library [Narrow Indirect](https://www.emacswiki.org/emacs/NarrowIndirect) ([`narrow-indirect.el`](https://www.emacswiki.org/emacs/download/narrow-indirect.el)) then [indirect buffers](https://www.emacswiki.org/emacs/IndirectBuffers) that are cloned from a buffer have similar names, by default, and their `mode-line-buffer-identification` is indicated with a different face, `ni-mode-line-buffer-id` (which is also boxed by default, but with a different border color): (defface ni-mode-line-buffer-id '((t (:box (:line-width 1 :color "green")))) "Like `mode-line-buffer-id', but for a narrowed indirect clone buffer." :group 'Narrow-Indirect :group 'mode-line-faces :group 'basic-faces)

When you do this you see the border on the sides? I just see on top/bottom, no borders on left/right sides.

I tried with the `modeline-win` but the borders appear only on top/bottom, not on the sides, like this: https://i.imgur.com/2nk5TJg.png

You'll need to upgrade Emacs to release 18. What you see is a bug prior that release: * https://debbugs.gnu.org/cgi/bugreport.cgi?bug=40124

That explains it. Thanks!