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https://issues.apache.org/jira/browse/GUACAMOLE-278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Jumper updated GUACAMOLE-278:
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Attachment: guac-terminal-256-before.png
guac-terminal-256-after.png
> Add support for xterm's 256-color control codes
> -----------------------------------------------
>
> Key: GUACAMOLE-278
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-278
> Project: Guacamole
> Issue Type: Improvement
> Components: SSH, Telnet, Terminal
> Reporter: Michael Jumper
> Assignee: Michael Jumper
> Attachments: guac-terminal-256-after.png, guac-terminal-256-before.png
>
>
> Guacamole currently only supports 16 colors in its terminal, whereas xterm
> and its various other modern derivatives all support 256+ colors, as well as
> arbitrary RGB colors. This support should be added to the Guacamole terminal,
> such that applications needing 256 colors have console codes to work with.
> xterm's 256-color codes are defined at
> http://invisible-island.net/xterm/ctlseqs/ctlseqs.html. There are code
> sequences which apply:
> * Set foreground to RGB color: {{CSI 38 ; 2 ; R ; G ; B}}
> * Set foreground to 256-color palette index N: {{CSI 38 ; 5 ; N}}
> * Set background to RGB color: {{CSI 48 ; 2 ; R ; G ; B}}
> * Set background to 256-color palette index N: {{CSI 48 ; 5 ; N}}
> There is an additional {{OSC}} sequence for redefining the 256-color palette,
> but that can probably be omitted for now. We have similarly omitted the
> Linux-specific console code for redefining the 16-color palette, even though
> we otherwise aim to support the same control sequences as the Linux console.
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