GitLab

(custom-buffer-create, custom-buffer-create-other-window)
(customize-browse): Use it instead of killing buffers.
(custom-bury-buffer): Obey the argument.
(custom-variable-reset-saved, custom-variable-reset-standard):
Remove unused var `comment-widget'.
(custom-face-edit-deactivate): Remove unused var `to'.
(custom-save-variables): Remove unused var `sep'.