^[control-codes live in libghostty-vt

Operating system commands

OSC 9 ; 5 Wait for a Key

Wait for Enter, Space or Esc.

OSC 9 ; 5 ST
ECMA-48
§8.3.89 OSC – Operating System Command, p. 51
Specification
ConEmu specific OSC, ConEmu's ANSI escape codes

OSC 9 ; 5 ST waits until Enter, Space or Esc is pressed, and records which in the environment variable ConEmuWaitKey.

It is one of the commands ConEmu, a Windows terminal, put under OSC 9; the progress report page lists them all, and their definition is the ConEmu specific OSC table in ConEmu’s documentation. iTerm2 uses OSC 9 ; text ST for a notification, and a terminal that has both tells them apart by what follows the 9.

A default xterm ignores all of OSC 9, which is not among the OSC numbers it knows. libghostty-vt recognizes it and does nothing with it, so neither shows anything.

Validation

CONEMU5-1: Nothing happens

A
\e]9;5\a
B
|AB____|
cursor 1,3
reply none
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