Konsole OSC + ST (231405)

[kurt.hindenburg at gmail.com]

Hi, I was actually looking at this recently but got distracted. If no 
one else picks it up, I'll try again.


Kurt

On 8/15/19 6:01 AM, Egmont Koblinger wrote:
> Hi guys,
>
> I hope you don't mind me reaching out directly to you.
>
> I'd like to kindly ask you to address
> https://bugs.kde.org/show_bug.cgi?id=231405 in the near future.
> There's a pending patch attached to the bug.
>
> According to the standard, namely ECMA-48 § 8.3.89 and 8.3.143, an OSC
> sequence has to be terminated by ST, whose C0 representation is ESC
> Backslash. Konsole mishandles this one. (It handles correctly the
> nonstandard but common practice of BEL as terminator instead, which as
> per the XTerm FAQ, originates from XTerm.)
>
> As Bruno (cc) pointed out, this parser bug blocks him from emitting
> OSC sequences (OSC 8 hyperlink in particular, see konsole bug 379294)
> in a standard confirming way, knowing that terminals would at least
> silently ignore the sequence, without messing up the screen. Konsole
> (and derivatives, e.g. yakuake) are the only popular modern terminal
> emulators we're aware of that are problematic here, the other
> problematic emulators belong to the long tail (unmaintained ones, or
> ones with very small use base).
>
> This bugfix for Konsole would be an important step in allowing the
> whole ecosystem of terminals and terminal-based applications to move
> forward.
>
> thanks a lot,
> egmont