[Pkg-xfce-devel] Bug#719228: Bug#719228: xfce4-terminal: Does not understand DECRQM, yet claims to be TERM=xterm

[Yves-Alexis Perez]

control: reassign -1 libvte-2.91-0
control: affects -1 xfce4-terminal

On Fri, 2013-08-09 at 14:48 +0100, Paul Evans wrote:
> Package: xfce4-terminal
> Version: 0.6.2-3
> Severity: normal
> 
> The DECRQM sequence (CSI ? ... $ p) is important for programs to be able
> to query the current settings of modes, either to be able to restore
> them after exit, or just to see what the settings are or probe for
> supported features.
> 
> A real xterm responds to this. xfce4-terminal, while claiming to be an
> xterm (by setting TERM=xterm) does not; instead leaving unprocessed CSI
> output directly on the screen. I would copy-paste it here but I can't,
> because the output contains -literal- Escape bytes and that would upset
> vim, and possibly your mail client ;)
> 
> The effect can be observed by
> 
>  $ echo -e '\e[?25$p'
> 
> A terminal supporting DECRQM should reply something like:
> 
>  ^[[?25;1$y
> 
> (which, since bash/readline don't understand the response, will just be
> printed raw into your next prompt line)
> 
> xfce4-terminal however, raw-prints the query bytes, including the
> literal U+001B of the leading Escape byte, turning it into the little
> square-box pango substitution character.
> 
> (Also it could be argued as a second bug that valid but unrecognised CSI
> sequences really ought to be stripped from the stream and not displayed
> as raw bytes of text; doubly-so should not be displayed with literal
> Escape characters in the terminal text buffer).

Hi,

I somehow missed this bug, but terminal processing in xfce4-terminal is done
in libvte so I'm reassigning this bug there. I'm also adding the maintainers
to recipients so they get the initial mail.

Regards,
-- 
Yves-Alexis
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