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https://issues.apache.org/jira/browse/GUACAMOLE-1973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17869508#comment-17869508
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Scott Percival commented on GUACAMOLE-1973:
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Patch - https://github.com/apache/guacamole-server/pull/533
> Add XTerm bracketed paste support to terminal emulator
> ------------------------------------------------------
>
> Key: GUACAMOLE-1973
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-1973
> Project: Guacamole
> Issue Type: Improvement
> Components: guacamole-server, Terminal
> Reporter: Scott Percival
> Priority: Minor
>
> The clipboard feature in the terminal emulator sends the clipboard buffer
> directly to the server, without any preprocessing. Current best practice for
> terminal emulators appears to be to strip out the majority of control
> characters, and for shells that support the feature, inject escape sequences
> at the start and end of the data to indicate pasted input is incoming (aka.
> XTerm bracketed paste mode -
> https://invisible-island.net/xterm/xterm-paste64.html ).
> Newer versions of shells with bracketed paste support will buffer multi-line
> inputs on screen for review, rather than immediately executing them. In
> addition this provides a better experience in programs which treat pasted
> data differently from typed data, e.g. IPython will perform automatic
> indentation on typed text but not pasted text.
> The approach I took is based on this patch adding filtering and bracketed
> paste to Microsoft Terminal -
> https://github.com/microsoft/terminal/pull/9034/files . The difference is
> that Microsoft Terminal uses wchar internally, making it easier to separate
> out lone Unicode C1 control characters (0x80-0x9f) without impacting UTF-8
> codepoint continuation. I ended up writing a sieve to pass valid UTF-8
> codepoints.
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