Using right margin for display doesn't work with more than 1 window in terminal

[jbmorgado]

When using the right side margin for diff symbol display with a vertical split window setup in the terminal, diff-hl only works for the file being displayed in the rightmost window.

The bug only appears in terminal mode, it works as expected in graphical Emacs.

(use-package diff-hl
  :ensure t
  :defer t
  :init
  (progn
    (setq diff-hl-side 'right)
    (global-diff-hl-mode)
    (diff-hl-margin-mode)
    (diff-hl-flydiff-mode)))

[dgutov]

Try putting this into your init file:

(setq-default right-margin-width 2)

[jbmorgado]

Hi, that doesn't work, but from your help, I did:

(add-hook 'window-configuration-change-hook
          (lambda ()
            (set-window-margins (car (get-buffer-window-list (current-buffer) nil t)) nil 2)))

And this works.
Don't know anything about elisp so I don't know why that works, but it's fine for me.

[dgutov]

Hi, that doesn't work

Did you try restarting Emacs?

[jbmorgado]

Yes I did. But like I told you, the other option works fine, so I'll stick to that as a workaround. Thank you.

[dgutov]

Too bad, it works for me.

I'm happy you've found a workaround, of course. By the way, you can use get-buffer-window instead of (car (get-buffer-window-list ...).