[konsole] [Bug 511435] New: OSC 8 hyperlinks in alternate screen buffer affect regular screen buffer

[Flupp]

https://bugs.kde.org/show_bug.cgi?id=511435

            Bug ID: 511435
           Summary: OSC 8 hyperlinks in alternate screen buffer affect
                    regular screen buffer
    Classification: Applications
           Product: konsole
      Version First 25.08.2
       Reported In:
          Platform: Arch Linux
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: konsole-devel at kde.org
          Reporter: Flupp+bugs.kde.org at mailbox.org
  Target Milestone: ---

SUMMARY

When OSC 8 hyperlink support is enabled and an OSC 8 hyperlink appears in the
alternate screen buffer, when returning to the regular screen buffer, Konsole
indicates a spurious link. This only happens when the regular screen buffer is
less than a screen page long (i.e., does not require scrolling yet).


STEPS TO REPRODUCE

0. In the used Konsole profile, enable Mouse/Miscellaneous/“Allow escape
sequences for links” and allow the http:// link format.

1. Start with a fresh Konsole tab. There shall not be any scrollback. Make sure
that the window is large enough such that the output of the following commands
fits the window without scrolling.

2. execute
> printf 'line 1\nline 2\nline 3: \e]8;;http://example.com\e\\This is a link\e]8;;\e\\\n'

3. “This is a link” works as expected as a link.

4. execute
> printf 'line 4\nline 5\n\033[?1049h\e]8;;http://example.com\e\\This is a link\e]8;;\e\\\n\033[?1049lline 6\nline 7\n'
   Beetween printing some lines, this enables the alternate screen buffer,
prints an OSC-8-marked-up hyperlink, and disables the alternate screen buffer
again.

   Alternatively, you can use `less` to do the screen buffer switching. After
exiting less, the effect will be the same:
> printf 'line 4\nline 5\n'; printf '\e]8;;http://example.com\e\\This is a link\e]8;;\e\\\n' | less -R; printf 'line 6\nline 7\n'


OBSERVED RESULT

“line 5” and everything above is now identified as link and clickable via
Ctrl+Click. When ctrl-clicking, the error “Malformed URL” is shown. This
includes the previously working “This is a link” link.


EXPECTED RESULT

The hyperlinks in the regular screen buffer do not change with step 4.


SOFTWARE/OS VERSIONS

Konsole Version: 25.08.2-1
Operating System: Arch Linux 
KDE Plasma Version: 6.5.1
KDE Frameworks Version: 6.19.0
Qt Version: 6.10.0
Kernel Version: 6.17.5-arch1-1 (64-bit)
Graphics Platform: Wayland

-- 
You are receiving this mail because:
You are the assignee for the bug.