Re: Customize how xrefs are followed in help-mode?

[Juri Linkov]

> From a user's standpoint, I guess what I'd prefer is to be able to give
> a prefix arg to RET when following the button, but I don't see any way
> of passing that arg down, plus there's no good equivalent for the mouse
> click.

To depend on a prefix arg is a good idea.

  (defun display-buffer-from-help-p (_buffer-name _action)
    (when current-prefix-arg
      (with-current-buffer (window-buffer)
        (eq major-mode 'help-mode))))

  (setq display-buffer-alist '((display-buffer-from-help-p
                                display-buffer-same-window)))