OSC 30 Tab Title (Konsole)

OSC 30 ; Pt ST sets the title of the session’s tab in Konsole to Pt, which it calls the session name; OSC 2 sets the window’s. The text replaces the tab’s title format, the one Konsole’s settings let a user write, so its placeholders work in it too: %d for the current directory, %n for the program running, %u for the user, and others (Session.cpp). A shell can put OSC 30 ; %d ST in its prompt and leave Konsole to fill in the directory.

Konsole, KDE’s terminal, has a few OSC numbers of its own. It documents none of them, so the definition is its source: the numbers are listed in Session::SessionAttributes, and acted on in Session::setSessionAttribute. They are OSC 30, OSC 32 and OSC 34, with a profile change under OSC 50, and once OSC 31.

xterm sets the number aside for Konsole and does nothing with it: its list of OSC numbers names 30 and 31 Konsole (unused) (misc.c). libghostty-vt has no Konsole code, and ignores it too.

Support

Validation

OSC30-1: Not the window title

\e]30;tab\a

|___|
title ""

OSC30-2: Nothing on screen

A
\e]30;%d\a
B

|AB_|
cursor 1,3
reply none