[konsole] [Bug 450407] New: problematic DA1 response

[Christian Persch]

https://bugs.kde.org/show_bug.cgi?id=450407

            Bug ID: 450407
           Summary: problematic DA1 response
           Product: konsole
           Version: master
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: emulation
          Assignee: konsole-devel at kde.org
          Reporter: chpe at src.gnome.org
  Target Milestone: ---

On konsole git master, commit 6158567c52590a6c2aef23807ff0523bd701547a, which
added SIXEL support, also changed the DA1 response to
"\033[?63;1;2;3;4;6;7;8c". However, this is overpromising the supported feature
set. According to DEC documentation, this response means that in addition to
SIXEL (4), it announces support for the printer port (2), ReGIS (3), selective
erase (6), DRCS character sets (7) and user-defined keys (8). As far as I can
tell, konsole supports none of these features, so this will make DA1-based
feature detection not work correctly.

I think it would be best to have DA1 be accurate and thus remove the extra
codes, leaving only 1 and 4.

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