左上のSublime Text → Preferences → Setting → setting - USERに以下の1行を追加する
"open_files_in_new_window": false
More than 5 years have passed since last update.
左上のSublime Text → Preferences → Setting → setting - USERに以下の1行を追加する
"open_files_in_new_window": false
Register as a new user and use Qiita more conveniently