Use my/centered-mode instead of relying on Gnus layouts

Lots of commands in Gnus buffers try to reinstate the setup defined in
gnus-buffer-configuration, so when eg drafting a message with the
original article displayed on the side, and using P or N to move
around the thread, there ends up being some friction in window
management.

So stop using the Group buffer as a way to left-pad articles; it
doesn't even look good on half-width frames anyway.

1 files changed, 6 insertions, 4 deletions

diff --git a/.emacs b/.emacs
index ed70f21..75662f1 100644
--- a/.emacs
+++ b/.emacs
@@ -126,6 +126,7 @@
     (message "changed from %s to %s" old-width new-width)))
 
 (defvar-local my/centered-width 'fill-column)
+(defvar-local my/centered-set-right-margin nil)
 
 (define-minor-mode my/centered-mode
   "Update margins to keep content centered."
@@ -150,11 +151,12 @@
            (adjustable-width
             (- (window-total-width window)
                (+ (fringe-columns 'left) (fringe-columns 'right))))
-           (target-margin
+           (left-margin
             (when (> adjustable-width target-body-width)
-              (/ (- adjustable-width target-body-width) 2))))
-      ;; Only set left margin, so that long lines are not truncated.
-      (set-window-margins window target-margin))))
+              (/ (- adjustable-width target-body-width) 2)))
+           (right-margin (and my/centered-set-right-margin
+                              left-margin)))
+      (set-window-margins window left-margin right-margin))))
 
 (defun my/kill (stuff)
   (kill-new stuff)