[konsole] [Bug 397757] New: Background Color Erase: bce madness when line too long

[rockandska]

https://bugs.kde.org/show_bug.cgi?id=397757

            Bug ID: 397757
           Summary: Background Color Erase: bce madness when line too long
           Product: konsole
           Version: 17.12.3
          Platform: Other
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: emulation
          Assignee: konsole-devel at kde.org
          Reporter: yoann_mac_donald at hotmail.com
  Target Milestone: ---

Created attachment 114548
  --> https://bugs.kde.org/attachment.cgi?id=114548&action=edit
bce konsole background repeat when scrolling

Hi,

It seems than Konsole suffer from the same behavior that VTE terminals had been
when they introduced a bug in BCE feature to cover others behaviors relate to
this feature and corrected since that.

The background is repeated on the whole next line if the line doesn't fit into
the terminal and insert a implicit new line.

It is exactly the same case as describe in this VTE bug report:
https://bugzilla.gnome.org/show_bug.cgi?id=754596

A Konsole user seems impacted by this too:
https://www.reddit.com/r/linux/comments/7ojwo9/pureline_a_pure_bash_powerline_prompt_simple_but/dsbe4x5

I could reproduce easily this bug by :

- having a PS1 with colors: PS1='\[\e[0;30m\]\[\e[43m\]\u@\h \w \$:\[$(tput
sgr0)\] '
- reduce the terminal to his minimal width
- entering into a deep directory to have the PS1 too long to fit only into one
line
- make the terminal scrolling by hit "enter" a few times

And you will see something like in the attachement.

Regards,

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