[Konsole-devel] [Bug 231405] New: Setting terminal title - ANSI string terminator not supported

[grawity at gmail.com]

https://bugs.kde.org/show_bug.cgi?id=231405

           Summary: Setting terminal title - ANSI string terminator not
                    supported
           Product: konsole
           Version: 2.4.1
          Platform: Archlinux Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: konsole-devel at kde.org
        ReportedBy: grawity at gmail.com


Version:           2.4.1 (using KDE 4.4.1)
OS:                Linux
Installed from:    Archlinux Packages

TL;DR summary: Konsole should treat "\e]0;<title>\e\\" (set window title) the
same way it interprets "\e]0;<title>\007".


I have this string as part of my $PS1 ('bash' prompt string):

    \e]0;<title>\e\\

This is supposed to set the window title in Xterm-compatible terminal
emulators. However, Konsole 2.4.1 (KDE 4.4.1) does not support this and reports
an error:

    Undecodable sequence: \001b(hex)\\

It seems that Konsole does not recognize the standard string terminator
sequence "\e\\" (ESC \). Everything works fine if I use "\007" (BEL) as string
terminator, but I would prefer to use the standard one.

According to <http://invisible-island.net/xterm/xterm.faq.html#how2_title>:

# The terminator "\007" is a problem area. Xterm historically uses this
character, though it is non-ANSI. The "correct" character should be a "\233"
string terminator, or "\033\\", which is the 7-bit equivalent. XFree86 xterm
recognizes either (the "\007" or string terminator); waiting for the first of
these.

Most other terminal emulators also accept both "\007" and "\033\\" - I tested
VTE-based ones qw[roxterm xfce4-terminal gnome-terminal], rxvt, and PuTTY.
Konsole is the only one so far that requires "\007".

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