(pop-to-buffer-same-window ...) causing margin to be stripped

[rytswd]

I just noticed how running (dwim-shell-command) from a buffer with custom margin set with something like (set-window-margins nil 3 3) gets the margin reset to nil due to the following line in cl-defun dwim-shell-command-execute-script:

    ;; Momentarily set buffer to same window, so it's next in recent stack.
    ;; Makes finding the shell command buffer a lot easier.
    (let ((current (current-buffer)))
      (pop-to-buffer-same-window proc-buffer)
      (pop-to-buffer-same-window current))

The comment makes it clear about the rationale of this code, but I'm wondering if there is a better way to achieve this somehow, so that the existing buffer won't get affected?

Screen.Recording.2024-05-30.at.13.57.40.mov

[xenodium]

Ah, we can likely do better there.

I had a quick try at something like:

(let ((current (current-buffer))
      (margins (window-margins)))
  (pop-to-buffer-same-window proc-buffer)
  (pop-to-buffer-same-window current)
  (set-window-margins nil (car margins) (cdr margins)))

but this didn't work. Got suggestions? Happy to take PRs.

[rytswd]

I've looked a bit into what we could do instead, but couldn't find other routes. It just needs to make into buffer-list but can't think of any other ways (and tried a few approaches but couldn't make them to work 🫣)