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ウィンドウを分割すると follow-mode にして行番号を表示する
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| (defun activate-follow-mode (&optional window) | |
| (follow-mode t) | |
| (display-line-numbers-mode t)) | |
| (advice-add 'split-window-right :after 'activate-follow-mode) | |
| (defun deactivate-follow-mode (&optional window del-all) | |
| (when (= 1 (length (window-list))) | |
| (follow-mode -1) | |
| (display-line-numbers-mode -1))) | |
| (dolist (cmd '(delete-window | |
| delete-other-windows)) | |
| (advice-add cmd :after 'deactivate-follow-mode)) |
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