[jira] [Commented] (GUACAMOLE-1633) Add terminal support for alternate screen buffer

["wengcy (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GUACAMOLE-1633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17562992#comment-17562992 ] 

wengcy commented on GUACAMOLE-1633:
-----------------------------------

It does seem so. This is the first time I know about the Alternate Screen Buffer, and I'm glad to know about it. Thank you for your answer.

> Add terminal support for alternate screen buffer
> ------------------------------------------------
>
>                 Key: GUACAMOLE-1633
>                 URL: https://issues.apache.org/jira/browse/GUACAMOLE-1633
>             Project: Guacamole
>          Issue Type: Improvement
>          Components: Terminal
>            Reporter: wengcy
>            Priority: Minor
>         Attachments: image-2022-07-06-14-08-38-966.png, image-2022-07-06-14-11-02-204.png, image-2022-07-06-14-18-23-551.png
>
>
> In SSH sessions, when you run vim, top, etc., the displayed data overwrites the recent rollback buffer.
> !image-2022-07-06-14-08-38-966.png!
> ⬆️ The image above shows the rollback buffer before I used vim, when the rollback buffer should hold the data from ll.
> !image-2022-07-06-14-11-02-204.png!
> ⬆️  However, after the vim command is used and the exit, the echo generated by ll command in the rollback buffer has been overwritten by the vim command.
> I know that the last page of data should be preserved after exiting using vim, but the data in the previous rollback buffer should not be lost, and I feel that this part of the processing like secureCRT is what we want.
> !image-2022-07-06-14-18-23-551.png!
> ⬆️ Just like this, after I use the vim command and exit, the previous ll command output will still exist, and the vim command will retain the state of the last screen before exiting.



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