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bug#30044: Emacs: Gud-mode: Debugging with gud: Window switching problem
From: |
Noam Postavsky |
Subject: |
bug#30044: Emacs: Gud-mode: Debugging with gud: Window switching problem |
Date: |
Thu, 11 Jan 2018 20:24:42 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.0.90 (gnu/linux) |
Claus Fischer <claus.fischer@clausfischer.com> writes:
> Is it possible to take a gud.el, sprinkle it liberally with some debug
> output, e.g. into Emacs' message buffer or on the terminal, and let me
> load it and wait for the problem to re-occur?
> Does Emacs have some debugging or recording mode for such situations?
This should do it, hopefully it catches all the relevant info. It will
be printed into a buffer named *trace-output*.
(dolist (fun '(gud-filter gud-display-frame gud-display-line display-buffer))
(trace-function-background fun))
(defun bug-30044-trace-window-list (&rest _)
(when (> trace-level 0)
(trace-values (window-list)
(mapcar #'window-prev-buffers (window-list))
(mapcar #'window-next-buffers (window-list)))))
(advice-add 'gud-filter :before #'bug-30044-trace-window-list)
(defun bug-30044-trace-current-window (&rest _)
(when (> trace-level 0)
(trace-values (selected-window))))
(advice-add 'gud-display-line :before #'bug-30044-trace-current-window)